Pier brackets and pier structures

Abstract

This prevents deterioration of workability, deterioration of pier quality, increase in construction costs, and prolongation of construction periods. [Solution] Pier brackets 3a to 3d have side portions 12a1, 12a2, 12b1, 12b2, 12c1, 12c2, 12d1, 12d2 and vertical support portions 13a to 13d connected to side portions 12a1, 12a2, 12b1, 12b2, 12c1, 12c2, 12d1, 12d2, and vertical support portions 13a to 13d are configured to be able to transmit vertical loads to the pier 2, and are installed on the pier 2 without drilling mounting holes in the pier 2.

Description

[Technical Field]

[0001] The present disclosure relates to a pier bracket and a pier structure. [Background technology]

[0002] Patent Document 1 discloses a technique for fixing a steel bracket attached to a bridge pier to the bridge pier with an anchor bolt. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2022-072700 Summary of the Invention [Problem to be solved by the invention]

[0004] However, fixing with anchor bolts as in Patent Document 1 requires drilling holes for the anchor bolts into the pier, but drilling holes for the anchor bolts into the pier can cause various problems, such as reduced workability, reduced pier quality, increased construction costs, longer construction periods, and environmental issues.

[0005] The present disclosure has been made in consideration of the above-mentioned circumstances, and aims to provide a pier bracket and a pier structure that can prevent problems that may arise from drilling holes for anchor bolts into piers. [Means for solving the problem]

[0006] <1> The pier bracket according to aspect 1 of the present disclosure includes: A side portion and a vertical support portion connected to the side portion, The vertical support portion is configured to be able to transmit a vertical load to the pier, It is installed on the pier without drilling mounting holes in the pier. [Effects of the Invention]

[0007] According to the present disclosure, it is possible to provide a pier bracket and a pier structure that can prevent problems that may arise from drilling holes for anchor bolts in a pier. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a side view schematically showing a bridge including a pier structure equipped with a pier bracket of a first embodiment. [Figure 2] FIG. 1 is a front view schematically showing a main part of a pier structure equipped with a pier bracket of a first embodiment. [Figure 3] FIG. 1 is a plan view schematically showing a main part of a pier structure equipped with a pier bracket of a first embodiment. [Figure 4] FIG. 3 is a cross-sectional view taken along the line III-III in FIG. [Figure 5] FIG. 10 is a front view schematically showing a main part of a pier structure including a pier bracket according to a second embodiment. [Figure 6] FIG. 10 is a plan view schematically showing a main part of a pier structure including a pier bracket according to a second embodiment. [Figure 7] FIG. 10 is a side view schematically showing a main part of a pier structure including a pier bracket according to a third embodiment. [Figure 8] FIG. 10 is a plan view schematically showing a main part of a pier structure including a pier bracket according to a third embodiment. [Figure 9] 9 is a cross-sectional view taken along the line IX-IX in FIG. 8. [Figure 10] FIG. 10 is a front view schematically showing a main part of a pier structure equipped with a pier bracket of a fourth embodiment. [Figure 11] FIG. 10 is a plan view schematically showing a main part of a pier structure equipped with a pier bracket of a fourth embodiment. [Figure 12] FIG. 10 is a front view schematically showing a main part of a pier structure equipped with a pier bracket of a fifth embodiment. [Figure 13]FIG. 10 is a plan view schematically showing a main part of a pier structure equipped with a pier bracket of a fifth embodiment. [Figure 14] FIG. 10 is a plan view schematically showing a main part of a pier structure equipped with a pier bracket of a sixth embodiment. [Figure 15] FIG. 13 is a plan view schematically showing a main part of a pier structure equipped with a pier bracket of a seventh embodiment. [Figure 16] FIG. 13 is a plan view schematically showing a main part of a pier structure equipped with a pier bracket of an eighth embodiment. [Figure 17] FIG. 10 is a front view schematically showing a main part of a pier structure equipped with a pier bracket of Modified Example 1. [Figure 18] FIG. 10 is a plan view schematically showing a main part of a pier structure equipped with a pier bracket of Modified Example 2. [Figure 19] FIG. 10 is a cross-sectional view schematically showing a main part of a pier structure equipped with a pier bracket of Modified Example 3. [Figure 20] FIG. 10 is a front view schematically showing a main part of a pier structure equipped with a pier bracket of Modified Example 4. [Figure 21] FIG. 10 is a plan view schematically showing a main part of a pier structure equipped with a pier bracket of Modified Example 5. [Figure 22] FIG. 13 is a side view schematically showing a main part of a pier structure equipped with a pier bracket of a sixth modified example. [Figure 23] FIG. 13 is a cross-sectional view schematically showing a main part of a pier structure equipped with a pier bracket of Modified Example 7. [Figure 24] FIG. 13 is a cross-sectional view schematically showing the main part of a pier according to Modification 8. [Figure 25] FIG. 13 is a cross-sectional view schematically showing a main part of a pier of a ninth modified example. [Figure 26] FIG. 20 is a cross-sectional view schematically showing the main part of a pier according to a tenth modification. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, a pier bracket and a pier structure according to an embodiment of the present disclosure will be described with reference to the drawings. [First embodiment] A pier bracket and a pier structure according to a first embodiment will be described mainly with reference to FIGS. FIG. 1 is a side view that schematically shows a bridge including a pier structure equipped with a pier bracket of the first embodiment. FIG. 2 is a front view schematically showing a main part of a pier structure including the pier bracket of the first embodiment. FIG. 3 is a plan view schematically showing a main part of a pier structure including the pier bracket of the first embodiment. FIG. 4 is a cross-sectional view taken along line III-III shown in FIG.

[0010] As shown in Figure 1, the bridge pier structure 1 according to the first embodiment comprises a plurality of piers 2 arranged at intervals in the bridge axis direction, which is the direction in which the bridge extends, and a pier bracket device 10 attached to the top of each of the plurality of piers 2. A bearing 5, which is a structure, is arranged on the top of each of the plurality of piers 2, and the bearings 5 ​​installed on each of the plurality of piers 2 support a superstructure 6 extending in the bridge axis direction.

[0011] The pier 2 is made of, for example, reinforced concrete and has a substantially rectangular parallelepiped shape. As shown in Figures 2 to 4, the pier 2 has an upper surface 2a, a side surface 2b, a side surface 2c, a side surface 2d, and a side surface 2e. The upper surface 2a is located at the top end of the pier 2 and is a flat surface that extends horizontally. The side surface 2b is provided on one side of the pier 2 in the bridge axis direction and is a flat surface that extends vertically and in a direction perpendicular to the bridge axis. The side surface 2c is provided on one side of the pier 2 in the bridge axis direction and is a flat surface that extends vertically and in a direction perpendicular to the bridge axis. The side surface 2d is provided on the other side of the pier 2 in the bridge axis direction and is a flat surface that extends vertically and in a direction perpendicular to the bridge axis. The side surface 2e is provided on the other side of the pier 2 in the bridge axis direction and is a flat surface that extends vertically and in the bridge axis direction. The side surfaces 2b, 2c, 2d, and 2e are arranged in this order around the periphery of the pier 2. The pier 2 has a side surface 2b and a side surface 2d that face in opposite directions, and a side surface 2c and a side surface 2e that extend perpendicular to the side surfaces 2b and 2d and face in opposite directions.

[0012] The pier bracket device 10 is attached to the upper part of each of the plurality of piers 2. The pier bracket device 10 includes a plurality of pier brackets 3a to 3d according to the first embodiment attached to the upper part of each of the plurality of piers 2. Specifically, as shown in Fig. 3, the pier bracket device 10 includes four pier brackets 3a to 3d. A bearing 5 is installed in the center of the upper surface 2a of the pier 2, and pier brackets 3a to 3d are arranged in the order pier bracket 3a, pier bracket 3b, pier bracket 3c, and pier bracket 3d on the top of the pier 2 so as to surround it all around in the horizontal direction. Pier bracket 3a has a base portion 11a, pier bracket 3b has a base portion 11b, pier bracket 3c has a base portion 11c, and pier bracket 3d has a base portion 11d. Base portions 11a and 11c have the same shape, and base portions 11b and 11d have the same shape. Base portions 11a and 11c and base portions 11b and 11d are mirror symmetrical.

[0013] The base portion 11a includes a side portion 12a1, a side portion 12a2, and a vertical support portion 13a. The side portions 12a1 and 12a2 are both rectangular flat plates, and one end edge of the side portion 12a1 is connected to one end edge of the side portion 12a2 so that they are perpendicular to each other. The side portions 12a1 and 12a2 are connected in an L-shape when viewed from above. The vertical support portion 13a is flat and connected to the upper end edges of the side portions 12a1 and 12a2. The vertical support portion 13a extends perpendicularly to both the side portions 12a1 and 12a2. The vertical support portion 13a has an L-shape when viewed from above, with a rectangular cutout portion 14a on the side opposite the side portions 12a1 and 12a2 in the horizontal direction. Base portion 11a is provided so that its cross section is L-shaped by side portion 12a1 and vertical support portion 13a, and is also provided so that its cross section is L-shaped by side portion 12a2 and vertical support portion 13a. Side portion 12a1, side portion 12a2, and vertical support portion 13a are made of, for example, steel plate, but may be made of a material other than steel plate. Here, base portion 11a is made of steel.

[0014] Here, the side surface portion 12a1 and the vertical support portion 13a may be connected by welding, for example. Alternatively, a flange may be provided at the connection portion between the side surface portion 12a1 and the vertical support portion 13a, and these flanges may be connected by a fastening member having a bolt, such as a high-tensile bolt, passing through the flanges and a nut threaded onto the bolt. Alternatively, the side surface portion 12a1 and the vertical support portion 13a may be connected by bending a single steel plate. Similarly, the side surface portion 12a2 and the vertical support portion 13a can be connected by welding, by fastening members, or by bending. Similarly, the side surface portion 12a1 and the side surface portion 12a2 can also be connected by welding, by fastening members, or by bending. Of course, the connection structure of each part is not limited to these, as long as an L-shape is formed after connection. The connection is preferably a rigid joint. The above description of the connection structure also applies to the base portions 11b to 11d.

[0015] The base portion 11c has a side portion 12c1 similar to the side portion 12a1, a side portion 12c2 similar to the side portion 12a2, and a vertical support portion 13c similar to the vertical support portion 13a, including a notch 14c similar to the notch 14a.

[0016] The base portion 11b includes a side portion 12b1, a side portion 12b2, and a vertical support portion 13b. The side portions 12b1 and 12b2 are both rectangular flat plates, and one end edge of the side portion 12b2 is connected to one end edge of the side portion 12b1 so that they are perpendicular to each other. The side portions 12b1 and 12b2 are connected in an L-shape when viewed from above. The vertical support portion 13b is flat and connected to the upper end edges of the side portions 12b1 and 12b2. The vertical support portion 13b extends perpendicularly to both the side portions 12b1 and 12b2. The vertical support portion 13b has an L-shape when viewed from above, with a rectangular cutout portion 14b on the side opposite the side portions 12b1 and 12b2 in the horizontal direction. The side surface portion 12b1, the side surface portion 12b2 and the vertical support portion 13b are made of, for example, a steel plate, but may be made of a material other than a steel plate.

[0017] The base portion 11d has a side portion 12d1 similar to the side portion 12b1, a side portion 12d2 similar to the side portion 12b2, and a vertical support portion 13d similar to the vertical support portion 13b, including a notch 14d similar to the notch 14b.

[0018] Therefore, pier bracket 3a has a plurality of side portions 12a1, 12a2, pier bracket 3b has a plurality of side portions 12b1, 12b2, pier bracket 3c has a plurality of side portions 12c1, 12c2, and pier bracket 3d has a plurality of side portions 12d1, 12d2.

[0019] The base portion 11a of the pier bracket 3a is provided on the pier 2 such that the side portion 12a1 abuts against the side surface 2b facing horizontally to one side of the pier 2 in the bridge axis direction, the side portion 12a2 abuts against the side surface 2e facing horizontally to one side of the pier 2 in a direction perpendicular to the bridge axis, and the vertical support portion 13a abuts against the upper surface 2a of the pier 2 facing vertically upward. The base portion 11b of the pier bracket 3b is attached to the pier 2 with its side portion 12b1 abutting against the side surface 2b of the pier 2, its side portion 12b2 abutting against the side surface 2c facing horizontally to the other side of the pier 2 perpendicular to the bridge axis, and its vertical support portion 13b abutting against the upper surface 2a of the pier 2. The base portion 11c of the pier bracket 3c is attached to the pier 2 with its side portion 12c1 abutting against the side surface 2d facing horizontally to the other side of the pier 2 in the bridge axis direction, its side portion 12c2 abutting against the side surface 2c of the pier 2, and its vertical support portion 13c abutting against the upper surface 2a of the pier 2. The base portion 11d of the pier bracket 3d is attached to the pier 2 with the side portion 12d1 abutting the side surface 2d of the pier 2, the side portion 12d2 abutting the side surface 2e of the pier 2, and the vertical support portion 13d abutting the upper surface 2a of the pier 2.

[0020] Pier bracket 3a and pier bracket 3b are connected by butting together the base 11b-side edge of side surface 12a1 of base portion 11a and the base 11a-side edge of side surface 12b1 of base portion 11b. While not shown, the connection structure for this connection may be, for example, by extending flanges outward from the butted edges of side surface 12a1 and side surface 12b1, and connecting these flanges with fastening members having bolts, such as high-tensile bolts, that pass through the flanges and nuts that are threaded onto the bolts. When side surface 12a1 and side surface 12b1 are connected, the opposing edges of vertical support portion 13a and vertical support portion 13b also abut against each other.

[0021] Furthermore, pier bracket 3b and pier bracket 3c are connected by butting together the edge of side surface portion 12b2 of base portion 11b on the base portion 11c side and the edge of side surface portion 12c2 of base portion 11c on the base portion 11b side. This connection structure is similar to the connection structure of base portions 11a and 11b. When side surface portion 12b2 and side surface portion 12c2 are connected, opposing edge portions of vertical support portion 13b and vertical support portion 13c also abut against each other.

[0022] Furthermore, pier bracket 3c and pier bracket 3d are connected by butting together the edge of side surface portion 12c1 of base portion 11c facing the base portion 11d and the edge of side surface portion 12d1 of base portion 11d facing the base portion 11c. The connection structure for this connection is similar to the connection structure for base portions 11a and 11b. When side surface portion 12c1 and side surface portion 12d1 are connected, opposing edge portions of vertical support portion 13c and vertical support portion 13d also abut against each other.

[0023] Furthermore, the pier bracket 3d and the pier bracket 3a are connected by butting together the edge of the side surface 12d2 of the base portion 11d on the base portion 11a side and the edge of the side surface 12a2 of the base portion 11a on the base portion 11d side. This connection structure is similar to the connection structure of the base portions 11a and 11b. When the side surface portion 12d2 and the side surface portion 12a2 are connected, the opposing edge portions of the vertical support portion 13d and the vertical support portion 13a also abut against each other.

[0024] Vertical support portion 13a is provided by notch 14a, vertical support portion 13b by notch 14b, vertical support portion 13c by notch 14c, and vertical support portion 13d by notch 14d, each avoiding the bearing 5. The notches 14a to 14d form a rectangular shape overall, and the bearing 5 is disposed inside this rectangle. Even when a structure other than the bearing 5 is installed on the top of the pier 2, the vertical support portions 13a to 13d can be provided by using the notches 14a to 14d to avoid the structure. All of vertical support portions 13a to 13d are configured to be able to transmit vertical loads to the pier 2 by abutting against the top surface 2a of the pier 2.

[0025] In the pier bracket device 10, the multiple vertical support portions 13a to 13d of the multiple pier brackets 3a to 3d are provided, in total, around the entire periphery of the upper surface 2a of the pier 2. Also, in the pier bracket device 10, the multiple side surface portions 12a1, 12a2, 12b1, 12b2, 12c1, 12c2, 12d1, and 12d2 of the multiple pier brackets 3a to 3d are provided, in total, around the entire periphery of the side surfaces 2b, 2c, 2d, and 2e of the upper portion of the pier 2. Therefore, in the pier bracket device 10, the multiple pier brackets 3a to 3d surround the entire periphery of the upper portion of the pier 2. The multiple pier brackets 3a to 3d are provided with side surface portions 12a1 and 12b1 and side surface portions 12c1 and 12d1 on both sides of the pier 2. Furthermore, the multiple pier brackets 3a to 3d are provided with side surface portions 12a2, 12d2 and side surface portions 12b2, 12c2 on both sides of the pier 2. The multiple pier brackets 3a to 3d have side surface portions 12a1 and 12a2 connected together, side surface portions 12a1 and 12b1 connected together, side surface portions 12b1 and 12b2 connected together, side surface portions 12b2 and 12c2 connected together, side surface portions 12c2 and 12c1 connected together, side surface portions 12c1 and 12d1 connected together, side surface portions 12d1 and 12d2 connected together, and side surface portions 12d2 and 12a2 connected together.

[0026] The pier bracket device 10 is provided with a support part 4 attached to at least one of the side surfaces 12a1, 12a2, 12b1, 12b2, 12c1, 12c2, 12d1, and 12d2 of the plurality of base parts 11a to 11d. Here, for example, one support part 4 is attached to each of the side surface 12a1 of the base part 11a of the pier bracket 3a, the side surface 12b1 of the base part 11b of the pier bracket 3b, the side surface 12c1 of the base part 11c of the pier bracket 3c, and the side surface 12d1 of the base part 11d of the pier bracket 3d, all of which face the bridge axis direction. Thus, one support part 4 is attached to each of the base part 11a of the pier bracket 3a, the base part 11b of the pier bracket 3b, the base part 11c of the pier bracket 3c, and the base part 11d of the pier bracket 3d. Therefore, each of the plurality of pier brackets 3a to 3d has one support portion 4.

[0027] The support portion 4 includes an abutment plate portion 21, an upper plate portion 22, a lower plate portion 23, and a connecting plate portion 24. The abutment plate portion 21 is flat and is attached by abutting against the corresponding one of the side surface portions 12a1, 12b1, 12c1, and 12d1. The upper plate portion 22 is flat and extends horizontally from the upper edge of the abutment plate portion 21 in the direction opposite the pier 2. The lower plate portion 23 is flat and extends horizontally from the lower edge of the abutment plate portion 21 in the direction opposite the pier 2. The connecting plate portion 24 is flat and extends vertically to connect the upper plate portion 22 and the lower plate portion 23 and is also connected to the abutment plate portion 21. The connecting plate portion 24 extends perpendicular to the abutment plate portion 21, the upper plate portion 22, and the lower plate portion 23. Preferably, the support portion 4 is provided with a plurality of connecting plate portions 24. The contact plate portion 21, the upper plate portion 22, the lower plate portion 23 and the connecting plate portion 24 are made of, for example, steel plates, and are fixed by welding at their connecting portions. Thus, in this example, the support portion 4 is made of steel.

[0028] The support part 4 is connected and fixed to each of the side surface parts 12a1, 12b1, 12c1, and 12d1 by, for example, welding (pier non-insertion means). Alternatively, a plurality of threaded studs (pier non-insertion means) may be welded to each of the side surface parts 12a1, 12b1, 12c1, and 12d1 so as to protrude horizontally in the opposite direction from the pier 2, and the corresponding threaded studs may be inserted into a plurality of through holes formed in the abutment plate part 21 of the support part 4. Nuts (pier non-insertion means) may be screwed onto the portions of each threaded stud protruding from the abutment plate part 21 to sandwich the abutment plate part 21 between the nuts and the corresponding side surface parts 12a1, 12b1, 12c1, and 12d1, thereby fixing the support part 4 to the corresponding side surface parts 12a1, 12b1, 12c1, and 12d1. In either the case of welding or the case of using threaded studs and nuts, the support portion 4 is attached and fixed to the side surface portions 12a1, 12b1, 12c1, and 12d1 by a non-pier insertion means that is not inserted into the pier 2. Note that various connection structures can be applied to the connection of the support portion 4 to the side surface portions 12a1, 12b1, 12c1, and 12d1 as long as a means that is not inserted into the pier 2 is not used. Furthermore, the support portion 4 is not limited to the above configuration. The support portion 4 may have any configuration as long as it is a structure that protrudes from the base portions 11a to 11d to the side opposite the pier 2.

[0029] The base portion 11a and the support portion 4 are integrally formed to form a pier bracket 3a of an integral structure, and this pier bracket 3a is directly attached to the pier 2. The base portion 11b and the support portion 4 are integrally formed to form a pier bracket 3b of an integral structure, and this pier bracket 3b is directly attached to the pier 2. The base portion 11c and the support portion 4 are integrally formed to form a pier bracket 3c of an integral structure, and this pier bracket 3c is directly attached to the pier 2. The base portion 11d and the support portion 4 are integrally formed to form a pier bracket 3d of an integral structure, and this pier bracket 3d is directly attached to the pier 2. A plurality of pier brackets 3a to 3d, all of which have an integral structure and are attached directly to the pier 2, are connected together with base portion 11a and base portion 11d arranged on either side of the pier 2, with base portion 11b and base portion 11c arranged on either side of the pier 2, with pier bracket 3a and pier bracket 3b arranged on either side of the pier 2, and with pier bracket 3c and pier bracket 3d arranged on either side of the pier 2, to form a pier bracket device 10 having an integral structure. This pier bracket device 10 is also attached directly to the pier 2.

[0030] A jack (not shown) for lifting the superstructure 6 is installed on the upper plate 22 of each of the support parts 4 of the multiple pier brackets 3a to 3d attached to the upper part of the pier 2, for example, during maintenance such as replacing the bearings 5. In other words, the support part 4 functions as a support surface for the jack when jacking up the superstructure 6 to replace the bearings 5. That is, the upper surface of the support part 4 forms the lower surface of the jack-up space. However, the lower surface of the jack-up space may be formed not only by the upper surface of the support part 4, but also by the upper surface of the pier 2 and the upper surface of the support part 4. That is, the support part 4 may be configured to expand the jack-up space. When the support part 4 is configured to expand the jack-up space in this way, it is preferable that the height of the upper surface of the base parts 11a to 11d and the height of the upper surface of the support part 4 are the same. The height of the upper surfaces of the base portions 11a to 11d and the support portion 4 do not have to be the same; for example, the height of the upper surfaces of the support portions 4 may be lower than the height of the upper surfaces of the base portions 11a to 11d. Note that a protective member may be provided on the superstructure 6 when jacking up. It is also possible to attach the pier brackets 3a to 3d to the pier 2 during maintenance of the bearing 5, and then remove the pier brackets 3a to 3d from the pier 2 after maintenance of the bearing 5. It is also possible to permanently attach the pier brackets 3a to 3d to the pier 2. The pier brackets 3a to 3d may be used as permanent scaffolding, for example, to enable jacking up at any time.

[0031] The pier bracket 3a according to the first embodiment described above includes side surfaces 12a1 and 12a2 and a vertical support portion 13a connected to the side surfaces 12a1 and 12a2 and configured to be able to transmit a vertical load to the pier 2, and is installed on the pier 2 without drilling an attachment hole in the pier 2. Furthermore, the pier bracket 3b includes side surfaces 12b1 and 12b2 and a vertical support portion 13b connected to the side surfaces 12b1 and 12b2 and configured to be able to transmit a vertical load to the pier 2, and is installed on the pier 2 without drilling an attachment hole in the pier 2. Furthermore, the pier bracket 3c includes side surfaces 12c1 and 12c2 and a vertical support portion 13c connected to the side surfaces 12c1 and 12c2 and configured to be able to transmit a vertical load to the pier 2, and is installed on the pier 2 without drilling an attachment hole in the pier 2. Furthermore, the pier bracket 3d includes side portions 12d1, 12d2 and a vertical support portion 13d that is connected to the side portions 12d1, 12d2 and is configured to be able to transmit vertical loads to the pier, and is installed on the pier 2 without drilling mounting holes in the pier 2. In other words, the pier brackets 3a to 3d are installed on the pier 2 without any components being inserted into the pier 2. Therefore, the pier brackets 3a to 3d can be installed on the pier 2 without drilling holes for anchor bolts in the pier 2. This makes it possible to prevent various problems that would otherwise occur due to drilling holes for anchor bolts, such as reduced workability, reduced pier quality, increased construction costs, longer construction periods, and environmental issues.

[0032] Problems associated with drilling anchor bolt holes include temporary cross-sectional defects in the pier. Furthermore, if the anchor bolt holes interfere with the rebar inside the pier, re-drilling is required, lengthening the work time and increasing the cross-sectional defects. Furthermore, if the rebar is densely packed inside the pier, drilling the anchor bolt holes is difficult, necessitating modifications to the pier, such as cutting the existing rebar. Furthermore, the position of the anchor bolts on the brackets is determined after the anchor bolt holes in the pier are drilled, which lengthens the construction period. Furthermore, muddy alkaline water containing cement is generated from the anchor bolt holes, requiring countermeasures, which increases construction costs.

[0033] In contrast, the pier brackets 3a to 3d according to the first embodiment do not require the use of anchor bolts, and therefore do not require drilling holes for the anchor bolts. This prevents a decrease in workability. Furthermore, since drilling holes for anchor bolts is not required, damage to the pier 2 is less likely to occur. This prevents a decrease in the quality of the pier 2. Furthermore, construction does not depend on the arrangement of rebars in the pier 2. Furthermore, since the shape of the support part 4 does not depend on the anchor position, it can be manufactured in advance, which leads to a reduction in the overall construction period. Since the shape of the support part 4 does not depend on the anchor position, it can be mass-produced in the same shape, which leads to a reduction in production costs. Since drilling holes for anchor bolts is not required, there is no need to treat muddy water on site, which leads to a reduction in construction costs and an environmental measure.

[0034] Furthermore, since the pier brackets 3a to 3d do not require the use of lashing cables, deterioration in workability due to entanglement of the lashing cables is unlikely to occur, and deterioration in workability can therefore be suppressed.

[0035] Furthermore, because the pier brackets 3a to 3d are attached directly to the pier 2, they can be placed on the pier 2 with fewer steps than when the pier brackets are attached to the pier via a pier bracket mounting device. That is, when the pier brackets are attached to the pier via a pier bracket mounting device, a step of attaching the pier bracket mounting device to the pier and a step of attaching the pier bracket to the pier bracket mounting device are required, but in this case, only the step of attaching the pier brackets 3a to 3d to the pier 2 is required.

[0036] Furthermore, because the pier brackets 3a to 3d are attached directly to the piers 2, there is no need to consider corrosion between the pier brackets and the pier bracket attaching device, which is necessary when the pier brackets are attached to the piers via a pier bracket attaching device. Note that the pier brackets 3a to 3d do not have to be attached directly to the piers 2.

[0037] Pier bracket 3a is configured to have an L-shaped cross section formed by side surface portion 12a1 and vertical support portion 13a, and an L-shaped cross section formed by side surface portion 12a2 and vertical support portion 13a. Pier bracket 3b is configured to have an L-shaped cross section formed by side surface portion 12b1 and vertical support portion 13b, and an L-shaped cross section formed by side surface portion 12b2 and vertical support portion 13b. Pier bracket 3c is configured to have an L-shaped cross section formed by side surface portion 12c1 and vertical support portion 13c, and an L-shaped cross section formed by side surface portion 12c2 and vertical support portion 13c. Pier bracket 3d is configured to have an L-shaped cross section formed by side surface portion 12d1 and vertical support portion 13d, and an L-shaped cross section formed by side surface portion 12d2 and vertical support portion 13d. Therefore, the pier brackets 3a to 3d can be stably attached to the pier 2. Note that the pier bracket 3a does not have to be configured so that the side surface portion 12a1 and the vertical support portion 13a form an L-shaped cross section, and the side surface portion 12a2 and the vertical support portion 13a do not have to be configured so that the cross section is L-shaped. Also, the pier bracket 3b does not have to be configured so that the side surface portion 12b1 and the vertical support portion 13b form an L-shaped cross section, and the side surface portion 12b2 and the vertical support portion 13b do not have to be configured so that the cross section is L-shaped. Also, the pier bracket 3c does not have to be configured so that the side surface portion 12c1 and the vertical support portion 13c form an L-shaped cross section, and the side surface portion 12c2 and the vertical support portion 13c do not have to be configured so that the cross section is L-shaped. Furthermore, the pier bracket 3d does not have to be configured so that the side portion 12d1 and the vertical support portion 13d form an L-shaped cross section, and it does not have to be configured so that the side portion 12d2 and the vertical support portion 13d form an L-shaped cross section.

[0038] Furthermore, the vertical support portions 13a to 13d of the pier brackets 3a to 3d are provided so as to avoid structures such as the bearing 5 arranged on the upper part of the pier 2, and therefore the pier brackets 3a to 3d can be attached to the pier 2 while avoiding the structures. Note that the vertical support portions 13a to 13d of the pier brackets 3a to 3d do not necessarily have to be provided so as to avoid structures such as the bearing 5 arranged on the upper part of the pier 2.

[0039] Furthermore, if the pier bracket device 10 formed by connecting the pier brackets 3a to 3d is viewed as a single pier bracket, the vertical support portions 13a to 13d are provided as a whole around the entire upper part of the pier 2, so that the pier bracket device 10 as a single pier bracket can be stably attached to the pier 2. Note that the pier bracket device 10 as a single pier bracket does not necessarily have to have the vertical support portions 13a to 13d provided as a whole around the entire upper part of the pier 2.

[0040] Furthermore, since the structure arranged on the top of the pier 2 that the vertical support portions 13a to 13d are to avoid is the bearing 5, the pier brackets 3a to 3d can be arranged on the top of the pier 2 without interfering with the bearing 5. Note that the structure arranged on the top of the pier 2 that the vertical support portions 13a to 13d are to avoid does not have to be the bearing 5.

[0041] Furthermore, the pier brackets 3a to 3d are capable of temporarily supporting the superstructure 6 when replacing the bearings 5, etc., making it possible to replace the bearings 5, etc. When replacing the bearings 5, a jack (hydraulic jack) for temporarily supporting the superstructure 6 may be placed on the support parts 4 of the pier brackets 3a to 3d, thereby making it possible to ensure space for replacing the bearings 5, etc., even when the space above the pier 2 is narrow. Note that the pier brackets 3a to 3d do not have to be capable of temporarily supporting the superstructure 6.

[0042] Furthermore, the pier brackets 3a to 3d can be installed on the top of the pier 2 when necessary and removed when no longer needed, but the pier brackets 3a to 3d may also be permanently installed on the top of the pier 2. In that case, the pier brackets 3a to 3d permanently installed on the top of the pier 2 can, for example, prevent the superstructure 6 from collapsing. In other words, the pier brackets 3a to 3d permanently installed on the top of the pier 2 may be used to prevent the superstructure 6 from collapsing.

[0043] Furthermore, the pier structure 1 according to the first embodiment has the above-mentioned effects due to the pier brackets 3a to 3d that it is provided with.

[0044] Furthermore, the pier structure 1 according to the first embodiment is configured such that a plurality of pier brackets 3a to 3d are provided on the pier 2 and the plurality of pier brackets 3a to 3d are connected to one another, and therefore the plurality of pier brackets 3a to 3d can be provided without drilling mounting holes in the pier 2. Note that the pier structure 1 does not necessarily have to have a plurality of pier brackets 3a to 3d provided on the pier 2. Furthermore, the pier structure 1 does not necessarily have to have a plurality of pier brackets 3a to 3d connected to one another.

[0045] Moreover, the pier structure 1 according to the first embodiment is configured by connecting the pier bracket 3a and the pier bracket 3b, which are arranged on both sides of the pier 2, to each other. Therefore, the pier bracket 3a and the pier bracket 3b can be provided to the pier 2 without drilling holes for attachment in the pier 2. Moreover, the pier structure 1 is configured by connecting the pier bracket 3b and the pier bracket 3c, which are arranged on both sides of the pier 2, to each other. Therefore, the pier bracket 3b and the pier bracket 3c can be provided to the pier 2 without drilling holes for attachment in the pier 2. Moreover, the pier structure 1 is configured by connecting the pier bracket 3c and the pier bracket 3d, which are arranged on both sides of the pier 2 to each other. Therefore, the pier bracket 3c and the pier bracket 3d can be provided to the pier 2 without drilling holes for attachment in the pier 2. Furthermore, the pier structure 1 is configured by connecting the pier bracket 3d and the pier bracket 3a, which are arranged on both sides of the pier 2, to each other. Therefore, the pier bracket 3d and the pier bracket 3a can be attached to the pier 2 without drilling mounting holes in the pier 2. Note that, in the pier structure 1, the pier bracket 3a and the pier bracket 3b, which are arranged on both sides of the pier 2, do not have to be connected to each other; the pier bracket 3b and the pier bracket 3c, which are arranged on both sides of the pier 2, do not have to be connected to each other; the pier bracket 3c and the pier bracket 3d, which are arranged on both sides of the pier 2, do not have to be connected to each other; and the pier bracket 3d and the pier bracket 3a, which are arranged on both sides of the pier 2, do not have to be connected to each other.

[0046] [Second embodiment] A pier structure 1A according to the second embodiment will be described, focusing on the parts that differ from the pier structure 1 according to the first embodiment, mainly with reference to Figures 5 and 6. Parts that are similar to those of the pier structure 1 according to the first embodiment (including those that differ only in size) will be given the same reference numerals, and their description will be omitted. FIG. 5 is a front view schematically showing a main part of a pier structure including a pier bracket according to the second embodiment. FIG. 6 is a plan view schematically showing a main part of a pier structure including a pier bracket according to the second embodiment.

[0047] As shown in Figures 5 and 6, in a pier structure 1A according to the second embodiment, a pier 2 is longer in the direction perpendicular to the bridge axis than the pier structure 1, and accordingly a pier bracket device 10A that is partially different from the pier bracket device 10 is provided instead of the pier bracket device 10. The pier bracket device 10A includes multiple pier brackets 3e, 3f, 3g, and 3h in addition to the pier brackets 3a to 3d. Specifically, the pier bracket device 10A includes four pier brackets 3e to 3h in addition to the four pier brackets 3a to 3d. The pier bracket 3e includes a base portion 11e, the pier bracket 3f includes a base portion 11f, the pier bracket 3g includes a base portion 11g, and the pier bracket 3h includes a base portion 11h. Base portions 11e to 11h have the same shape. Multiple bearings 5 ​​are installed in the center of the upper surface 2a of the pier 2, lined up in a direction perpendicular to the bridge axis, and the base portions 11a to 11h of pier brackets 3a to 3h are arranged in the upper part of the pier 2 so as to surround them all around in the horizontal direction, in the following order: base portion 11a of pier bracket 3a, base portion 11e of pier bracket 3e, base portion 11f of pier bracket 3f, base portion 11b of pier bracket 3b, base portion 11c of pier bracket 3c, base portion 11g of pier bracket 3g, base portion 11h of pier bracket 3h, and base portion 11d of pier bracket 3d.

[0048] The base portion 11e includes a side portion 12e and a vertical support portion 13e. The side portion 12e and the vertical support portion 13e are both rectangular flat plates, and one end edge of the vertical support portion 13e is connected to one end edge of the side portion 12e so that they are perpendicular to each other. The base portion 11e is provided so that the side portion 12e and the vertical support portion 13e form an L-shaped cross section. The side portion 12e and the vertical support portion 13e are made of, for example, a steel plate, but may be made of a material other than a steel plate. In this example, the base portion 11e is made of steel.

[0049] Here, the connection structure of the side portion 12e and the vertical support portion 13e can be, for example, a connection structure by welding, a connection structure by fastening members, or a connection structure by bending, similar to the connection structure of the side portion 12a1 and the vertical support portion 13a. The above description of the connection structure also applies to the base portions 11f to 11h.

[0050] The base portion 11f has a side surface portion 12f similar to the side surface portion 12e, and a vertical support portion 13f similar to the vertical support portion 13e.

[0051] The base portion 11g has a side surface portion 12g similar to the side surface portion 12e, and a vertical support portion 13g similar to the vertical support portion 13e.

[0052] The base portion 11h has a side surface portion 12h similar to the side surface portion 12e, and a vertical support portion 13h similar to the vertical support portion 13e.

[0053] Therefore, pier bracket 3a has a plurality of side portions 12a1, 12a2, pier bracket 3b has a plurality of side portions 12b1, 12b2, pier bracket 3c has a plurality of side portions 12c1, 12c2, pier bracket 3d has a plurality of side portions 12d1, 12d2, pier bracket 3e has side portion 12e, pier bracket 3f has side portion 12f, pier bracket 3g has side portion 12g, and pier bracket 3h has side portion 12h.

[0054] Similar to the pier bracket device 10, the base portion 11a of the pier bracket 3a is provided on the pier 2 with its side surface 12a1 abutting against the side surface 2b of the pier 2, its side surface 12a2 abutting against the side surface 2e of the pier 2, and its vertical support portion 13a abutting against the upper surface 2a of the pier 2. The base portion 11b of the pier bracket 3b is provided on the pier 2 with its side surface 12b1 abutting against the side surface 2b of the pier 2, its side surface 12b2 abutting against the side surface 2c of the pier 2, and its vertical support portion 13b abutting against the upper surface 2a of the pier 2. The base portion 11c of the pier bracket 3c is provided on the pier 2 with its side surface 12c1 abutting against the side surface 2d of the pier 2, its side surface 12c2 abutting against the side surface 2c of the pier 2, and its vertical support portion 13c abutting against the upper surface 2a of the pier 2. The base portion 11d of the pier bracket 3d is attached to the pier 2 with the side portion 12d1 abutting the side surface 2d of the pier 2, the side portion 12d2 abutting the side surface 2e of the pier 2, and the vertical support portion 13d abutting the upper surface 2a of the pier 2.

[0055] The base portion 11e of the pier bracket 3e is located adjacent to the base portion 11a of the pier bracket 3a on the side of the base portion 11b of the pier bracket 3b, and the side portion 12e abuts against the side surface 2b of the pier 2, and the vertical support portion 13e abuts against the upper surface 2a of the pier 2 and is located on the pier 2.

[0056] The base portion 11f of the pier bracket 3f is provided adjacent to and between the base portion 11e of the pier bracket 3e and the base portion 11b of the pier bracket 3b, and the side portion 12f abuts against the side surface 2b of the pier 2, and the vertical support portion 13f abuts against the upper surface 2a of the pier 2 and is provided on the pier 2.

[0057] The base portion 11g of the pier bracket 3g is arranged adjacent to the base portion 11c of the pier bracket 3c on the base portion 11d side of the pier bracket 3d, and the side portion 12g abuts against the side surface 2d of the pier 2, and the vertical support portion 13g abuts against the upper surface 2a of the pier 2 and is arranged on the pier 2.

[0058] The base portion 11h of the pier bracket 3h is provided adjacent to and between the base portion 11g of the pier bracket 3g and the base portion 11d of the pier bracket 3d, and the side portion 12h abuts against the side surface 2d of the pier 2, and the vertical support portion 13h abuts against the upper surface 2a of the pier 2 and is provided on the pier 2.

[0059] The pier bracket 3a and the pier bracket 3e are connected by butting together the edge of the side surface 12a1 of the base portion 11a on the base portion 11e side and the edge of the side surface 12e of the base portion 11e on the base portion 11a side. For example, the same connection structure as the connection structure between the base portion 11a and the base portion 11b of the pier bracket device 10 can be applied as the connection structure. When the side surface portion 12a1 and the side surface portion 12e are connected, the opposing edge portions of the vertical support portion 13a and the vertical support portion 13e also abut against each other.

[0060] Furthermore, the pier bracket 3e and the pier bracket 3f are connected by butting the edge of the side surface portion 12e of the base portion 11e on the base portion 11f side with the edge of the side surface portion 12f of the base portion 11f on the base portion 11e side against each other. The connection structure for this connection is also similar to the connection structure for the base portions 11a and 11e. When the side surface portion 12e and the side surface portion 12f are connected, the opposing edge portions of the vertical support portion 13e and the vertical support portion 13f also abut against each other.

[0061] Furthermore, the pier bracket 3f and the pier bracket 3b are connected by butting together the base 11b-side edge of the side surface 12f of the base portion 11f and the base 11f-side edge of the side surface 12b1 of the base portion 11b. The connection structure for this connection is similar to the connection structure for the base portions 11a and 11e. When the side surface portion 12f and the side surface portion 12b1 are connected, the opposing edge portions of the vertical support portion 13f and the vertical support portion 13b also abut against each other.

[0062] In addition, the pier bracket 3b and the pier bracket 3c are connected in the same manner as the pier bracket device 10, with the side surface portion 12b2 of the base portion 11b and the side surface portion 12c2 of the base portion 11c.

[0063] Furthermore, pier bracket 3c and pier bracket 3g are connected by butting together the edge of side surface portion 12c1 of base portion 11c on the base portion 11g side and the edge of side surface portion 12g of base portion 11g on the base portion 11c side. This connection structure is similar to the connection structure of base portions 11a and 11e. When side surface portion 12c1 and side surface portion 12g are connected, opposing edge portions of vertical support portion 13c and vertical support portion 13g also abut against each other.

[0064] Furthermore, the pier brackets 3g and 3h are connected by butting together the edge of the side surface 12g of the base portion 11g facing the base portion 11h and the edge of the side surface 12h of the base portion 11h facing the base portion 11g. The connection structure for this connection is similar to the connection structure for the base portions 11a and 11e. When the side surface portions 12g and 12h are connected, the opposing edge portions of the vertical support portions 13g and 13h also abut against each other.

[0065] Furthermore, the pier brackets 3h and 3d are connected by butting together the edge of the side surface 12h of the base portion 11h facing the base portion 11d and the edge of the side surface 12d1 of the base portion 11d facing the base portion 11h. This connection structure is similar to the connection structure between the base portions 11a and 11e. When the side surface portion 12h and the side surface portion 12d1 are connected, the opposing edge portions of the vertical support portion 13h and the vertical support portion 13d also abut against each other.

[0066] Furthermore, the pier bracket 3d and the pier bracket 3a are connected in the same manner as the pier bracket device 10, with the side surface portion 12d2 of the base portion 11d and the side surface portion 12a2 of the base portion 11a being connected.

[0067] The vertical support portions 13a to 13h have an overall rectangular shape including the cutout portions 14a to 14d, and multiple bearings 5 ​​are arranged inside this rectangle. Even if structures other than the multiple bearings 5 ​​are installed on top of the pier 2, the vertical support portions 13a to 13h can be installed to avoid those structures. Each of the vertical support portions 13a to 13h is configured to be able to transmit vertical loads to the pier 2 by abutting against the upper surface 2a of the pier 2.

[0068] In the pier bracket device 10A, a plurality of vertical support portions 13a to 13h of a plurality of pier brackets 3a to 3h are provided, in total, around the entire periphery of the upper surface 2a of the pier 2. Also, in the pier bracket device 10A, a plurality of side surface portions 12a1, 12a2, 12b1, 12b2, 12c1, 12c2, 12d1, 12d2, 12e to 12h of the plurality of pier brackets 3a to 3h are provided, in total, around the entire periphery of the side surfaces 2b to 2e of the upper portion of the pier 2. Therefore, in the pier bracket device 10A, the plurality of pier brackets 3a to 3h surround the entire periphery of the upper portion of the pier 2. The plurality of pier brackets 3a to 3h are provided with side surface portions 12a1, 12e, 12f, 12b1 and side surface portions 12c1, 12g, 12h, 12d1 on both sides of the pier 2. The pier brackets 3a to 3d are provided with side surface portions 12a2, 12d2 and side surface portions 12b2, 12c2 on both sides of the pier 2. The multiple pier brackets 3a to 3h are connected at side portion 12a1 and side portion 12e, at side portion 12e and side portion 12f, at side portion 12f and side portion 12b1, at side portion 12b1 and side portion 12b2, at side portion 12b2 and side portion 12c2, at side portion 12c2 and side portion 12c1, at side portion 12c1 and side portion 12g, at side portion 12g and side portion 12h, at side portion 12h and side portion 12d1, at side portion 12d1 and side portion 12d2, and at side portion 12d2 and side portion 12a2.

[0069] The pier bracket device 10A includes a support portion 4 attached to at least one of the side surface portions 12a1, 12a2, 12b1, 12b2, 12c1, 12c2, 12d1, 12d2, and 12e to 12h of the plurality of base portions 11a to 11h. Here, for example, one support part 4 is attached to each of the side surface 12a1 of the base part 11a of pier bracket 3a, the side surface 12b1 of the base part 11b of pier bracket 3b, the side surface 12c1 of the base part 11c of pier bracket 3c, the side surface 12d1 of the base part 11d of pier bracket 3d, the side surface 12e of the base part 11e of pier bracket 3e, the side surface 12f of the base part 11f of pier bracket 3f, the side surface 12g of the base part 11g of pier bracket 3g, and the side surface 12h of the base part 11h of pier bracket 3h, all of which face the bridge axis direction. Thus, each of the multiple pier brackets 3a to 3h has one support part 4.

[0070] The support portion 4 is connected and fixed to each of the side portions 12a1, 12b1, 12c1, 12d1, 12e, 12f, 12g, and 12h, similarly to the pier bracket device 10, for example, by welding or using threaded studs.

[0071] The base portion 11a and the support portion 4 are integrally formed to form a pier bracket 3a of an integral structure, and this pier bracket 3a is directly attached to the pier 2. The base portion 11b and the support portion 4 are integrally formed to form a pier bracket 3b of an integral structure, and this pier bracket 3b is directly attached to the pier 2. The base portion 11c and the support portion 4 are integrally formed to form a pier bracket 3c of an integral structure, and this pier bracket 3c is directly attached to the pier 2. The base portion 11d and the support portion 4 are integrally formed to form a pier bracket 3d of an integral structure, and this pier bracket 3d is directly attached to the pier 2. The base portion 11e and the support portion 4 are integrally formed to form a pier bracket 3e of an integral structure, and this pier bracket 3e is directly attached to the pier 2. Furthermore, the base portion 11f and the support portion 4 are integrally formed to form a pier bracket 3f of an integral structure, and this pier bracket 3f is directly attached to the pier 2. Furthermore, the base portion 11g and the support portion 4 are integrally formed to form a pier bracket 3g of an integral structure, and this pier bracket 3g is directly attached to the pier 2. Furthermore, the base portion 11h and the support portion 4 are integrally formed to form a pier bracket 3h of an integral structure, and this pier bracket 3h is directly attached to the pier 2. The plurality of pier brackets 3a to 3h, all of which have an integral structure and are attached directly to the pier 2, are provided integrally by connecting base portion 11a to base portion 11e, base portion 11e to base portion 11f, base portion 11f to base portion 11b, base portion 11b to base portion 11c, base portion 11c to base portion 11g, base portion 11g to base portion 11h, base portion 11h to base portion 11d, and base portion 11d to base portion 11a, thereby constituting an integrally structured pier bracket device 10A. This pier bracket device 10A is also attached directly to the pier 2.

[0072] A jack (not shown) for lifting the superstructure 6 is installed on the upper plate 22 of each of the support parts 4 of the multiple pier brackets 3a to 3h attached to the upper part of the pier 2, for example, during maintenance such as replacing the bearings 5. In other words, the support part 4 functions as a support surface for the jack when jacking up the superstructure 6 to replace the bearings 5. That is, the upper surface of the support part 4 forms the lower surface of the jack-up space. However, the lower surface of the jack-up space may be formed not only by the upper surface of the support part 4, but also by the upper surface of the pier 2 and the upper surface of the support part 4. That is, the support part 4 may be configured to expand the jack-up space. When the support part 4 is configured to expand the jack-up space in this way, it is preferable that the height of the upper surface of the base parts 11a to 11h and the height of the upper surface of the support part 4 are the same. The height of the upper surfaces of the base portions 11a to 11h and the support portion 4 do not have to be the same; for example, the height of the upper surfaces of the support portions 4 may be lower than the height of the upper surfaces of the base portions 11a to 11h. Note that a protective member may be provided on the superstructure 6 when jacking up. It is also possible to attach the pier brackets 3a to 3h to the pier 2 during maintenance of the bearing 5, and then remove the pier brackets 3a to 3h from the pier 2 after maintenance of the bearing 5. It is also possible to permanently attach the pier brackets 3a to 3h to the pier 2. The pier brackets 3a to 3h may be used as permanent scaffolding, for example, to enable jacking up at any time.

[0073] The pier brackets 3a to 3d according to the second embodiment described above are installed on the pier 2 without drilling mounting holes in the pier 2, as in the first embodiment. Furthermore, the pier bracket 3e includes a side surface portion 12e and a vertical support portion 13e connected to the side surface portion 12e and configured to be able to transmit a vertical load to the pier 2, and is installed on the pier 2 without drilling mounting holes in the pier 2. Furthermore, the pier bracket 3f includes a side surface portion 12f and a vertical support portion 13f connected to the side surface portion 12f and configured to be able to transmit a vertical load to the pier 2, and is installed on the pier 2 without drilling mounting holes in the pier 2. Furthermore, the pier bracket 3g includes a side surface portion 12g and a vertical support portion 13g connected to the side surface portion 12g and configured to be able to transmit a vertical load to the pier 2, and is installed on the pier 2 without drilling mounting holes in the pier 2. The pier bracket 3h includes a side portion 12h and a vertical support portion 13h that is connected to the side portion 12h and is configured to be able to transmit a vertical load to the pier 2, and is attached to the pier 2 without drilling holes for attachment in the pier 2. In other words, the pier brackets 3a to 3h are attached to the pier 2 without any components being inserted into the pier 2. Therefore, the pier brackets 3a to 3h can be attached to the pier 2 without drilling holes for anchor bolts in the pier 2. This makes it possible to prevent various problems that would otherwise occur due to drilling holes for anchor bolts, such as reduced workability, reduced pier quality, increased construction costs, longer construction periods, and environmental issues.

[0074] Furthermore, because the pier brackets 3a to 3h are attached directly to the pier 2, they can be placed on the pier 2 with fewer steps than when the pier brackets are attached to the pier via a pier bracket mounting device. That is, when the pier brackets are attached to the pier via a pier bracket mounting device, a step of attaching the pier bracket mounting device to the pier and a step of attaching the pier bracket to the pier bracket mounting device are required, but in this case, only the step of attaching the pier brackets 3a to 3h to the pier 2 is required.

[0075] Furthermore, because the pier brackets 3a to 3h are attached directly to the piers 2, there is no need to consider corrosion between the pier brackets and the pier bracket attachment devices, which was necessary when the pier brackets were attached to the piers via a pier bracket attachment device. The pier brackets 3a to 3h do not have to be attached directly to the piers 2.

[0076] Furthermore, the pier bracket 3e is provided so as to have an L-shaped cross section formed by the side surface portion 12e and the vertical support portion 13e. The pier bracket 3f is provided so as to have an L-shaped cross section formed by the side surface portion 12f and the vertical support portion 13f. The pier bracket 3g is provided so as to have an L-shaped cross section formed by the side surface portion 12g and the vertical support portion 13g. The pier bracket 3h is provided so as to have an L-shaped cross section formed by the side surface portion 12h and the vertical support portion 13h. Therefore, in addition to the pier brackets 3a to 3d, the pier brackets 3e to 3h can be stably attached to the pier 2. The pier bracket 3e does not have to be provided so as to have an L-shaped cross section formed by the side surface portion 12e and the vertical support portion 13e. The pier bracket 3f does not have to be provided so as to have an L-shaped cross section formed by the side surface portion 12f and the vertical support portion 13f. Furthermore, the pier bracket 3g does not have to be provided so that the side surface portion 12g and the vertical support portion 13g form an L-shaped cross section. Furthermore, the pier bracket 3h does not have to be provided so that the side surface portion 12h and the vertical support portion 13h form an L-shaped cross section.

[0077] Furthermore, since the vertical support portions 13a to 13h of the pier brackets 3a to 3h are provided so as to avoid structures such as the bearing 5 arranged on the upper part of the pier 2, the pier brackets 3a to 3h can be attached to the pier 2 while avoiding the structures. Note that the vertical support portions 13a to 13h of the pier brackets 3a to 3h do not necessarily have to be provided so as to avoid structures such as the bearing 5 arranged on the upper part of the pier 2.

[0078] Furthermore, if the pier bracket device 10A formed by connecting the pier brackets 3a to 3h is viewed as a single pier bracket, the vertical support portions 13a to 13h are provided as a whole around the entire upper periphery of the pier 2, so that the pier bracket device 10A as a single pier bracket can be stably attached to the pier 2. Note that the pier bracket device 10A as a single pier bracket does not necessarily have to have the vertical support portions 13a to 13h provided as a whole around the entire upper periphery of the pier 2.

[0079] Furthermore, since the structure arranged on the top of the pier 2 that the vertical support portions 13a to 13h are to avoid is the bearing 5, the pier brackets 3a to 3h can be arranged on the top of the pier 2 without interfering with the bearing 5. Note that the structure arranged on the top of the pier 2 that the vertical support portions 13a to 13h are to avoid does not have to be the bearing 5.

[0080] Furthermore, the pier brackets 3a to 3h are capable of temporarily supporting the superstructure 6 when replacing the bearings 5, etc., making it possible to replace the bearings 5, etc. When replacing the bearings 5, a jack (hydraulic jack) for temporarily supporting the superstructure 6 may be placed on the support parts 4 of the pier brackets 3a to 3h, thereby making it possible to ensure space for replacing the bearings 5, etc., even when the space above the pier 2 is narrow. Note that the pier brackets 3a to 3h do not have to be capable of temporarily supporting the superstructure 6.

[0081] Furthermore, the pier brackets 3a to 3h can be installed on the top of the pier 2 when necessary and removed when no longer needed, but the pier brackets 3a to 3h may also be permanently installed on the top of the pier 2. In that case, the pier brackets 3a to 3h permanently installed on the top of the pier 2 can, for example, prevent the superstructure 6 from collapsing. In other words, the pier brackets 3a to 3h permanently installed on the top of the pier 2 may be used to prevent the superstructure 6 from collapsing.

[0082] Moreover, the pier structure 1A according to the second embodiment has the pier brackets 3a to 3g which provide the above-mentioned effects.

[0083] Furthermore, since the pier structure 1A is configured such that multiple pier brackets 3a to 3h are provided on the pier 2 and the multiple pier brackets 3a to 3h are connected to each other, multiple pier brackets 3a to 3h can be provided without drilling mounting holes in the pier 2.

[0084] Furthermore, in the pier structure 1A, even if the length of the pier 2 in the direction perpendicular to the pier is long, it is possible to install the number of support parts 4 according to the length. Furthermore, in the pier structure 1A, even if the length of the pier 2 in the direction perpendicular to the pier is long, it is possible to keep the size of each of the pier brackets 3a to 3h small, thereby suppressing a decrease in workability.

[0085] Moreover, the pier structure 1A according to the second embodiment is configured such that pier bracket 3a and pier bracket 3b, which are arranged on both sides of the pier 2, are connected to each other via, for example, pier bracket 3e and pier bracket 3f. Therefore, pier bracket 3a and pier bracket 3b can be attached to the pier 2 without drilling attachment holes in the pier 2. Moreover, the pier structure 1A is configured such that pier bracket 3b and pier bracket 3c, which are arranged on both sides of the pier 2, are connected to each other. Therefore, pier bracket 3b and pier bracket 3c can be attached to the pier 2 without drilling attachment holes in the pier 2. Moreover, the pier structure 1A is configured such that pier bracket 3c and pier bracket 3d, which are arranged on both sides of the pier 2, are connected to each other via, for example, pier bracket 3g and pier bracket 3h. Therefore, pier bracket 3c and pier bracket 3d can be attached to the pier 2 without drilling attachment holes in the pier 2. Moreover, the pier structure 1A is configured by connecting a pier bracket 3d and a pier bracket 3a, which are arranged on both sides of the pier 2, to each other. Therefore, the pier bracket 3d and the pier bracket 3a can be attached to the pier 2 without drilling holes for attachment in the pier 2. Moreover, the pier structure 1A is configured by connecting a pier bracket 3e and a pier bracket 3h, which are arranged on both sides of the pier 2, to each other, for example, via the pier bracket 3d and the pier bracket 3a. Therefore, the pier bracket 3e and the pier bracket 3h can be attached to the pier 2 without drilling holes for attachment in the pier 2. Moreover, the pier structure 1A is configured by connecting a pier bracket 3f and a pier bracket 3g, which are arranged on both sides of the pier 2, to each other, for example, via the pier bracket 3b and the pier bracket 3c. Therefore, the pier bracket 3f and the pier bracket 3g can be attached to the pier 2 without drilling holes for attachment in the pier 2.In addition, in the pier structure 1A, pier bracket 3a and pier bracket 3b, which are arranged on both sides of the pier 2, do not have to be connected to each other, pier bracket 3b and pier bracket 3c, which are arranged on both sides of the pier 2, do not have to be connected to each other, pier bracket 3c and pier bracket 3d, which are arranged on both sides of the pier 2, do not have to be connected to each other, pier bracket 3d and pier bracket 3a, which are arranged on both sides of the pier 2, do not have to be connected to each other, pier bracket 3e and pier bracket 3h, which are arranged on both sides of the pier 2, do not have to be connected to each other, and pier bracket 3f and pier bracket 3g, which are arranged on both sides of the pier 2, do not have to be connected to each other.

[0086] [Third embodiment] A pier structure 1B according to a third embodiment will be described, focusing on the parts that differ from the pier structure 1 according to the first embodiment, mainly with reference to Figures 7 to 9. Parts that are similar to those of the pier structure 1 according to the first embodiment (including those that differ only in size) will be given the same reference numerals, and their description will be omitted. FIG. 7 is a front view schematically showing a main part of a pier structure including a pier bracket according to a third embodiment. FIG. 8 is a plan view schematically showing a main part of a pier structure including a pier bracket according to a third embodiment. FIG. 9 is a cross-sectional view taken along line IX-IX shown in FIG.

[0087] 7 to 9, a pier structure 1B according to the third embodiment is provided with a pier bracket device 10B that is partially different from the pier bracket device 10, instead of the pier bracket device 10. The pier bracket device 10B is provided with pier brackets 3Ba to 3Bd that are partially different from the pier brackets 3a to 3d, instead of the pier brackets 3a to 3d.

[0088] Pier bracket 3Ba has one support part 4 attached to a side surface part 12a2 facing the bridge axis perpendicular to the base part 11a, similar to pier bracket 3a. Pier bracket 3Bb has one support part 4 attached to a side surface part 12b2 facing the bridge axis perpendicular to the base part 11b, similar to pier bracket 3b. Pier bracket 3Bc has one support part 4 attached to a side surface part 12c2 facing the bridge axis perpendicular to the base part 11c, similar to pier bracket 3c. Pier bracket 3Bd has one support part 4 attached to a side surface part 12d2 facing the bridge axis perpendicular to the base part 11d, similar to pier bracket 3d. Therefore, in this case too, each of the multiple pier brackets 3Ba to 3Bd has one support part 4.

[0089] The support portions 4 are connected and fixed to the side surface portions 12a2, 12b2, 12c2, 12d2 of the base portions 11a to 11d, respectively, by welding or using threaded studs, in the same manner as the pier structure 1 according to the first embodiment.

[0090] The base portion 11a and the support portion 4 are integrally formed to form a pier bracket 3Ba of an integral structure, and this pier bracket 3Ba is directly attached to the pier 2. The base portion 11b and the support portion 4 are integrally formed to form a pier bracket 3Bb of an integral structure, and this pier bracket 3Bb is directly attached to the pier 2. The base portion 11c and the support portion 4 are integrally formed to form a pier bracket 3Bc of an integral structure, and this pier bracket 3Bc is directly attached to the pier 2. The base portion 11d and the support portion 4 are integrally formed to form a pier bracket 3Bd of an integral structure, and this pier bracket 3Bd is directly attached to the pier 2. The plurality of pier brackets 3Ba to 3Bd, all of which have an integral structure and are attached directly to the pier 2, are configured such that base portion 11a and base portion 11b, which are arranged on either side of the pier 2, are connected, base portion 11b and base portion 11c, which are arranged on either side of the pier 2, are connected, base portion 11c and base portion 11d, which are arranged on either side of the pier 2, and base portion 11d and base portion 11a, which are arranged on either side of the pier 2, are connected, and thus form a pier bracket device 10B of an integral structure. This pier bracket device 10B is also attached directly to the pier 2.

[0091] A jack (not shown) for lifting the superstructure 6 is installed on the upper plate 22 of each of the support parts 4 of the multiple pier brackets 3Ba to 3Bd attached to the upper part of the pier 2, for example, during maintenance of the bearings 5. In other words, the support part 4 functions as a support surface for the jack when jacking up the superstructure 6 to replace the bearings 5. That is, the upper surface of the support part 4 forms the lower surface of the jack-up space. However, the lower surface of the jack-up space may be formed not only by the upper surface of the support part 4, but also by the upper surface of the pier 2 and the upper surface of the support part 4. That is, the support part 4 may be configured to expand the jack-up space. When the support part 4 is configured to expand the jack-up space in this way, it is preferable that the height of the upper surface of the base parts 11a to 11d and the height of the upper surface of the support part 4 are the same. The height of the upper surfaces of the base portions 11a to 11d and the support portion 4 do not have to be the same; for example, the height of the upper surfaces of the support portions 4 may be lower than the height of the upper surfaces of the base portions 11a to 11d. Note that a protective member may be provided on the superstructure 6 when jacking up. It is also possible to attach the pier brackets 3Ba to 3Bd to the pier 2 during maintenance of the bearing 5, and then remove the pier brackets 3Ba to 3Bd from the pier 2 after maintenance of the bearing 5. It is also possible to permanently attach the pier brackets 3Ba to 3Bd to the pier 2. The pier brackets 3Ba to 3Bd may be used as permanent scaffolding, for example, to enable jacking up at any time.

[0092] The pier brackets 3Ba to 3Bd according to the third embodiment described above can achieve the same effects as the pier brackets 3a to 3d according to the first embodiment, and the pier structure 1B according to the third embodiment can achieve the same effects as the pier structure 1 according to the first embodiment.

[0093] [Fourth embodiment] A pier structure 1C according to the fourth embodiment will be described, focusing on the parts that differ from the pier structure 1 according to the first embodiment, mainly with reference to Figures 10 and 11. Parts that are similar to those of the pier structure 1 according to the first embodiment (including those that differ only in size) will be given the same reference numerals, and their description will be omitted. FIG. 10 is a front view schematically showing a main part of a pier structure including a pier bracket according to the fourth embodiment. FIG. 11 is a plan view schematically showing a main part of a pier structure including a pier bracket according to the fourth embodiment.

[0094] 10 and 11, in a pier structure 1C according to the fourth embodiment, the pier 2 is longer in the direction perpendicular to the bridge axis than the pier structure 1, and accordingly a pier bracket device 10C that is partially different from the pier bracket device 10 is provided in place of the pier bracket device 10. The pier bracket device 10C is provided with pier brackets 3Ca to 3Cd that are partially different from the pier brackets 3a to 3d in place of the pier brackets 3a to 3d.

[0095] The pier bracket 3Ca has a base portion 11a similar to the base portion 11a of the pier bracket 3a, with the side portion 12a1 facing the bridge axis direction being longer in the direction perpendicular to the bridge axis than the base portion 11a of the pier bracket 3a, and the portion of the vertical support portion 13a along the side portion 12a1 being longer in the direction perpendicular to the bridge axis than the base portion 11a of the pier bracket 3a.The pier bracket 3Ca has multiple support portions 4, for example two, attached to the side portion 12a1, lined up in the direction perpendicular to the bridge axis.

[0096] The pier bracket 3Cb has a base portion 11b similar to the base portion 11b of the pier bracket 3b, with the side portion 12b1 facing the bridge axis direction being longer in the direction perpendicular to the bridge axis than the base portion 11b of the pier bracket 3b, and the portion of the vertical support portion 13b along the side portion 12b1 is longer in the direction perpendicular to the bridge axis than the base portion 11b of the pier bracket 3b.The pier bracket 3Cb has multiple support portions 4, for example two, attached to the side portion 12b1 in a line perpendicular to the bridge axis.

[0097] The pier bracket 3Cc has a base portion 11c similar to the base portion 11c of the pier bracket 3c, with the side portion 12c1 facing the bridge axis direction being longer in the direction perpendicular to the bridge axis than the base portion 11c of the pier bracket 3c, and the portion of the vertical support portion 13c along the side portion 12c1 being longer in the direction perpendicular to the bridge axis than the base portion 11c of the pier bracket 3c.The pier bracket 3Cc has multiple support portions 4, for example two, attached to the side portion 12c1 in a line perpendicular to the bridge axis.

[0098] The pier bracket 3Cd has a base portion 11d similar to the base portion 11d of the pier bracket 3d, with a side portion 12d1 facing the bridge axis direction that is longer in the direction perpendicular to the bridge axis than the base portion 11d of the pier bracket 3d, and the portion of the vertical support portion 13d that runs along the side portion 12d1 is longer in the direction perpendicular to the bridge axis than the base portion 11d of the pier bracket 3d. The pier bracket 3Cd has multiple support portions 4, for example, two, attached to the side portion 12d1, lined up in the direction perpendicular to the bridge axis. Therefore, in this case, each of the pier brackets 3Ca to 3Cd has a plurality of support portions 4.

[0099] The support portion 4 is connected and fixed to each of the side surface portions 12a1, 12b1, 12c1, 12d1 of the base portions 11a to 11d by, for example, welding or using threaded studs, in the same manner as the pier structure 1 according to the first embodiment.

[0100] The base portion 11a and the multiple support portions 4 are integrally formed to form a pier bracket 3Ca of an integral structure, and this pier bracket 3Ca is directly attached to the pier 2. The base portion 11b and the multiple support portions 4 are integrally formed to form a pier bracket 3Cb of an integral structure, and this pier bracket 3Cb is directly attached to the pier 2. The base portion 11c and the multiple support portions 4 are integrally formed to form a pier bracket 3Cc of an integral structure, and this pier bracket 3Cc is directly attached to the pier 2. The base portion 11d and the multiple support portions 4 are integrally formed to form a pier bracket 3Cd of an integral structure, and this pier bracket 3Cd is directly attached to the pier 2. The plurality of pier brackets 3Ca to 3Cd, all of which have an integral structure and are all attached directly to the pier 2, are configured such that base portion 11a and base portion 11d, which are arranged on either side of the pier 2, are connected, base portion 11b and base portion 11c, which are arranged on either side of the pier 2, are connected, pier bracket 3a and pier bracket 3b, which are arranged on either side of the pier 2, and pier bracket 3a and pier bracket 3b, which are arranged on either side of the pier 2, are connected, and are integrally provided to form a pier bracket device 10C of an integral structure. This pier bracket device 10C is also attached directly to the pier 2.

[0101] A jack (not shown) for lifting the superstructure 6 is installed on the upper plate 22 of each of the support parts 4 of the multiple pier brackets 3a to 3d attached to the upper part of the pier 2, for example, during maintenance of the bearings 5. In other words, the support part 4 functions as a support surface for the jack when jacking up the superstructure 6 to replace the bearings 5. That is, the upper surface of the support part 4 forms the lower surface of the jack-up space. However, the lower surface of the jack-up space may be formed not only by the upper surface of the support part 4, but also by the upper surface of the pier 2 and the upper surface of the support part 4. That is, the support part 4 may be configured to expand the jack-up space. When the support part 4 is configured to expand the jack-up space in this way, it is preferable that the height of the upper surface of the base parts 11a to 11d and the height of the upper surface of the support part 4 are the same. The height of the upper surfaces of the base portions 11a to 11d and the support portion 4 do not have to be the same; for example, the height of the upper surfaces of the support portions 4 may be lower than the height of the upper surfaces of the base portions 11a to 11d. Note that a protective member may be provided on the superstructure 6 when jacking up. It is also possible to attach the pier brackets 3a to 3d to the pier 2 during maintenance of the bearing 5, and then remove the pier brackets 3a to 3d from the pier 2 after maintenance of the bearing 5. It is also possible to permanently attach the pier brackets 3a to 3d to the pier 2. The pier brackets 3a to 3d may be used as permanent scaffolding, for example, to enable jacking up at any time.

[0102] The pier brackets 3Ca to 3Cd according to the fourth embodiment described above have the same effects as the pier brackets 3a to 3d according to the first embodiment. Furthermore, even if the length of the pier 2 in the pier-perpendicular direction is long, the pier brackets 3Ca to 3Cd can be provided with a number of support parts 4 corresponding to the length. The pier structure 1C according to the fourth embodiment has the same effects as the pier structure 1 according to the first embodiment. Furthermore, even if the length of the pier 2 in the pier-perpendicular direction is long, the pier structure 1C can be provided with pier brackets 3a to 3d having a number of support parts 4 corresponding to the length.

[0103] [Fifth embodiment] A pier structure 1D according to a fifth embodiment will be described, focusing on the parts that differ from the pier structure 1 according to the first embodiment, mainly with reference to Figures 12 and 13. Parts that are similar to those of the pier structure 1 according to the first embodiment (including those that differ only in size) will be given the same reference numerals, and their description will be omitted. FIG. 12 is a front view schematically showing a main part of a pier structure including a pier bracket according to a fifth embodiment. FIG. 13 is a plan view schematically showing a main part of a pier structure including a pier bracket according to the fifth embodiment.

[0104] As shown in FIGS. 12 and 13 , in a pier structure 1D according to the fifth embodiment, the pier 2 is longer in the direction perpendicular to the bridge axis than the pier structure 1. Accordingly, a pier bracket device 10D, which is partially different from the pier bracket device 10, is provided instead of the pier bracket device 10. The pier bracket device 10D has a connecting member 30 that connects the side surface portion 12a1 to the side surface portion 12b1 between the base portion 11a and the base portion 11b. The connecting member 30 has a first member 31 that connects the upper portion of the side surface portion 12a1 to the upper portion of the side surface portion 12b1, a second member 32 that connects the lower portion of the side surface portion 12a1 to the lower portion of the side surface portion 12b1, a third member 33 that connects the upper portion of the side surface portion 12a1 to the lower portion of the side surface portion 12b1, and a fourth member 34 that connects the lower portion of the side surface portion 12a1 to the upper portion of the side surface portion 12b1. The third member 33 and the fourth member 34 intersect, and the intersections are connected. Therefore, the connecting member 30 forms a multiple truss structure with the side surface portion 12a1 and the side surface portion 12b1. The pier bracket device 10D also has a similar connecting member 30 between the base portion 11c and the base portion 11d, connecting the side surface portion 12c1 and the side surface portion 12d1. The connecting member 30 connecting the side surface portion 12a1 and the side surface portion 12b1 is not limited to a truss structure, and various connecting structures can be applied. That is, the side surface portion 12a1 and the side surface portion 12b1 do not need to be connected by a single steel plate, but may be connected via a separate connecting member. In other words, the side surface portion 12a1 and the side surface portion 12b1 are not limited to being formed by a single continuous member, and may be formed by connecting multiple side surface portions 12a1 and 12b1 with connecting members 30, as shown in FIGS. 12 and 13 .

[0105] Each of the multiple pier brackets 3a to 3d has an integral structure, and is attached directly to the pier 2. Base portion 11a and base portion 11d, which are located on either side of the pier 2, are connected, base portion 11b and base portion 11c, which are located on either side of the pier 2, are connected, and pier bracket 3a and pier bracket 3b, which are located on either side of the pier 2, are connected via connecting member 30. pier bracket 3a and pier bracket 3b, which are located on either side of the pier 2, are connected via connecting member 30, and thus form a pier bracket device 10D of integral structure, which is provided as an integral unit. This pier bracket device 10D is also attached directly to the pier 2.

[0106] A jack (not shown) for lifting the superstructure 6 is installed on the upper plate 22 of each of the support parts 4 of the multiple pier brackets 3a to 3d attached to the upper part of the pier 2, for example, during maintenance of the bearings 5. In other words, the support part 4 functions as a support surface for the jack when jacking up the superstructure 6 to replace the bearings 5. That is, the upper surface of the support part 4 forms the lower surface of the jack-up space. However, the lower surface of the jack-up space may be formed not only by the upper surface of the support part 4, but also by the upper surface of the pier 2 and the upper surface of the support part 4. That is, the support part 4 may be configured to expand the jack-up space. When the support part 4 is configured to expand the jack-up space in this way, it is preferable that the height of the upper surface of the base parts 11a to 11d and the height of the upper surface of the support part 4 are the same. The height of the upper surfaces of the base portions 11a to 11d and the support portion 4 does not have to be the same; for example, the height of the upper surfaces of the support portions 4 may be lower than the height of the upper surfaces of the base portions 11a to 11d. Note that a protective member may be provided on the superstructure 6 during jacking up. It is also possible to attach the pier brackets 3a to 3d and the connecting member 30 to the pier 2 during maintenance of the bearing 5, and then remove the pier brackets 3a to 3d and the connecting member 30 from the pier 2 after maintenance of the bearing 5. It is also possible to permanently attach the pier brackets 3a to 3h and the connecting member 30 to the pier 2. The pier brackets 3a to 3d may be used as permanent scaffolding, for example, to enable jacking up at any time.

[0107] The pier brackets 3a to 3d according to the fifth embodiment described above have the same effects as the pier brackets 3a to 3d according to the first embodiment. Moreover, the pier structure 1D according to the fifth embodiment has the same effects as the pier structure 1 according to the first embodiment. Furthermore, in the pier structure 1D, even if the length of the pier 2 in the direction perpendicular to the pier is long, the size of each of the base portions 11a to 11d of the pier brackets 3a to 3d can be kept small, thereby preventing a decrease in workability.

[0108] [Sixth embodiment] A pier structure 1E according to the sixth embodiment will be described, focusing on the parts that differ from the pier structure 1 according to the first embodiment, mainly with reference to Fig. 14. Parts that are similar to those of the pier structure 1 according to the first embodiment (including those that differ only in size) will be assigned the same reference numerals, and their description will be omitted. FIG. 14 is a plan view schematically showing a main part of a pier structure including a pier bracket according to the sixth embodiment.

[0109] As shown in Fig. 14, in the pier structure 1E according to the sixth embodiment, the pier 2E has a cylindrical shape. The pier 2E has an upper surface 2Ea and a side surface 2Eb. The upper surface 2Ea is a flat surface that extends horizontally at the upper end of the pier 2E. The side surface 2Eb is a cylindrical surface that is the outer peripheral surface on the radial outside of the pier 2E and extends vertically.

[0110] Accordingly, the pier structure 1E is provided with a pier bracket device 10E that is partially different from the pier bracket device 10, instead of the pier bracket device 10. The pier bracket device 10E is provided with pier brackets 3Ea to 3Ed that are partially different from the pier brackets 3a to 3d, instead of the pier brackets 3a to 3d.

[0111] The pier bracket 3Ea has a base portion 11Ea instead of the base portion 11a, the pier bracket 3Eb has a base portion 11Eb instead of the base portion 11b, the pier bracket 3Ec has a base portion 11Ec instead of the base portion 11c, and the pier bracket 3Ed has a base portion 11Ed instead of the base portion 11a.

[0112] The base portions 11Ea to 11Ed have the same shape. A bearing 5 is installed in the center of the upper surface 2Ea of the pier 2E, and the base portions 11Ea to 11Ed are arranged side by side on the top of the pier 2E in the order of base portion 11Ea, base portion 11Eb, base portion 11Ec, and base portion 11Ed so as to surround the entire circumference in the horizontal direction.

[0113] The base portion 11Ea of the pier bracket 3Ea includes a side portion 12Ea and a vertical support portion 13Ea. The side portion 12Ea is plate-shaped and curved to fit the outer peripheral surface of the pier 2E in the radial direction. The vertical support portion 13Ea is flat and arc-shaped in plan view. The side portion 12Ea and the vertical support portion 13Ea are perpendicular to each other, and the radially outer edge of the vertical support portion 13Ea is connected to the upper edge of the side portion 12Ea. The vertical support portion 13Ea has an arc-shaped shape in plan view, with a fan-shaped cutout portion 14Ea on the opposite side from the side portion 12Ea in the horizontal direction. The base portion 11Ea is configured to have an L-shaped cross section by the side portion 12Ea and the vertical support portion 13Ea. The side surface portions 12Ea and the vertical support portions 13Ea are made of, for example, steel plate, but may be made of a material other than steel plate.Here, the base portion 11Ea is made of steel.

[0114] Here, the connection structure of the side surface portion 12Ea and the vertical support portion 13Ea can be, for example, a connection structure by welding or a connection structure by fastening members, similar to the connection structure of the side surface portion 12a1 and the vertical support portion 13a. The above description of the connection structure also applies to the base portions 11Eb to 11Ed.

[0115] The base portion 11Eb of the pier bracket 3Eb has a side portion 12Eb similar to the side portion 12Ea, and a vertical support portion 13Eb similar to the vertical support portion 13Ea, which has a notch 14Eb similar to the notch 14Ea.

[0116] The base portion 11Ec of the pier bracket 3Ec has a side portion 12Ec similar to the side portion 12Ea, and a vertical support portion 13Ec similar to the vertical support portion 13Ea, which has a cutout portion 14Ec similar to the cutout portion 14Ea.

[0117] The base portion 11Ed of the pier bracket 3Ed has a side portion 12Ed similar to the side portion 12Ea, and a vertical support portion 13Ed similar to the vertical support portion 13Ea, which has a cutout portion 14Ed similar to the cutout portion 14Ea.

[0118] Therefore, the pier bracket 3Ea is provided with a side surface portion 12Ea, the pier bracket 3Eb is provided with a side surface portion 12Eb, the pier bracket 3Ec is provided with a side surface portion 12Ec, and the pier bracket 3Ed is provided with a side surface portion 12d.

[0119] The base portion 11Ea of the pier bracket 3Ea is provided on the pier 2E with the side portion 12Ea abutting against the side surface 2Eb of the pier 2E and the vertical support portion 13Ea abutting against the upper surface 2Ea of the pier 2E. The base portion 11Eb of the pier bracket 3Eb is provided on the pier 2E with the side portion 12Eb abutting against the side surface 2Eb of the pier 2E and the vertical support portion 13Eb abutting against the upper surface 2Ea of the pier 2E. The base portion 11Ec of the pier bracket 3Ec is provided on the pier 2E with the side portion 12Ec abutting against the side surface 2Eb of the pier 2E and the vertical support portion 13Ec abutting against the upper surface 2Ea of the pier 2E. The base portion 11Ed of the pier bracket 3Ed is provided on the pier 2E with the side portion 12Ed abutting against the side surface 2Eb of the pier 2E and the vertical support portion 13Ed abutting against the upper surface 2Ea of the pier 2E.

[0120] The pier bracket 3Ea and the pier bracket 3Eb are connected by butting together the base 11Eb-side edge of the side surface portion 12Ea of the base portion 11Ea and the base 11Ea-side edge of the side surface portion 12Eb of the base portion 11Eb. For example, the same connection structure as the connection structure between the base portion 11a and the base portion 11b of the pier bracket device 10 according to the first embodiment can be applied as the connection structure for this connection. When the side surface portion 12Ea and the side surface portion 12Eb are connected, the opposing edge portions of the vertical support portion 13Ea and the vertical support portion 13Eb also abut against each other.

[0121] Furthermore, the pier bracket 3Eb and the pier bracket 3Ec are connected by butting the edge of the side surface portion 12Eb of the base portion 11Eb facing the base portion 11Ec and the edge of the side surface portion 12Ec of the base portion 11Ec facing the base portion 11Eb against each other. The connection structure for this connection is similar to the connection structure for the base portions 11Ea and 11Eb. When the side surface portion 12Eb and the side surface portion 12Ec are connected, the opposing edge portions of the vertical support portion 13Eb and the vertical support portion 13Ec also abut against each other.

[0122] Furthermore, the pier bracket 3Ec and the pier bracket 3Ed are connected by butting together the base 11Ed-side edge of the side surface 12Ec of the base portion 11Ec and the base 11Ed-side edge of the side surface 12Ed of the base portion 11Ed. This connection structure is similar to the connection structure of the base portions 11Ea and 11Eb. When the side surface portion 12Ec and the side surface portion 12Ed are connected, the opposing edge portions of the vertical support portion 13Ec and the vertical support portion 13Ed also abut against each other.

[0123] Furthermore, the pier bracket 3Ed and the pier bracket 3Ea are connected by butting together the base 11Ea-side edge of the side surface 12Ed of the base portion 11Ed and the base 11Ed-side edge of the side surface 12Ea of the base portion 11Ea. This connection structure is similar to the connection structure of the base portions 11Ea and 11Eb. When the side surface portion 12Ed and the side surface portion 12Ea are connected, the opposing edge portions of the vertical support portion 13Ed and the vertical support portion 13Ea also abut against each other.

[0124] The vertical support portions 13Ea-13Ed have a circular shape as a whole at the radially inner portion formed by the cutout portions 14Ea-14Ed, and the bearing 5 is disposed inside this circle. Even when structures other than the multiple bearings 5 ​​are installed on the upper part of the pier 2E, the vertical support portions 13Ea-13Ed can be installed to avoid those structures. Each of the vertical support portions 13Ea-13Ed is configured to be able to transmit a vertical load to the pier 2E by abutting against the upper surface 2Ea of the pier 2E.

[0125] In the pier bracket device 10E, a plurality of vertical support portions 13Ea-13Ed of a plurality of pier brackets 3Ea-3Ed are provided around the entire periphery of the upper surface 2Ea of the pier 2E. Also, in the pier bracket device 10E, side surface portions 12Ea-12Ed of a plurality of pier brackets 3Ea-3Ed are provided around the entire periphery of the upper side surface 2Eb of the pier 2E. Therefore, the pier bracket device 10E has a shape that surrounds the entire periphery of the upper part of the pier 2E. In the pier bracket device 10E, a side surface portion 12Ea of the pier bracket 3Ea and a side surface portion 12Ec of the pier bracket 3Ec are provided on both sides of the pier 2E. Also, in the pier bracket device 10E, a side surface portion 12Eb of the pier bracket 3Eb and a side surface portion 12Ed of the pier bracket 3Ed are provided on both sides of the pier 2E. The multiple pier brackets 3Ea to 3Ed are connected at their side portions 12Ea and 12Eb, at their side portions 12Eb and 12Ec, at their side portions 12Ec and 12Ed, and at their side portions 12Ed and 12Ea.

[0126] In the pier bracket device 10E, a support portion 4E is attached to at least one of the side surface portions 12Ea to 12Ed of the plurality of base portions 11Ea to 11Ed. Here, for example, one support portion 4E is attached to each of the side surface portions 12Ea to 12Ed of the plurality of base portions 11Ea to 11Ed.

[0127] The support portion 4E has a contact plate portion 21E that contacts the side surface portions 12Ea to 12Ed and is shaped to curve to fit the side surface portions 12Ea to 12Ed. Accordingly, the upper plate portion 22E and the lower plate portion (not shown) of the support portion 4E also have arc-shaped portions that connect to the contact plate portion 21E. The support portion 4E is connected and fixed to each of the side surface portions 12Ea to 12Ed by, for example, welding or using threaded studs, in the same manner as the pier structure 1 according to the first embodiment.

[0128] The base portion 11Ea and the support portion 4E are integrally formed to form a pier bracket 3Ea of an integral structure, and this pier bracket 3Ea is directly attached to the pier 2. The base portion 11Eb and the support portion 4E are integrally formed to form a pier bracket 3Eb of an integral structure, and this pier bracket 3Eb is directly attached to the pier 2. The base portion 11Ec and the support portion 4E are integrally formed to form a pier bracket 3Ec of an integral structure, and this pier bracket 3Ec is directly attached to the pier 2. The base portion 11Ed and the support portion 4E are integrally formed to form a pier bracket 3Ed of an integral structure, and this pier bracket 3Ed is directly attached to the pier 2. All of the multiple brackets have an integral structure, and are all directly attached to the pier 2. The pier brackets 3Ea to 3Ed are integrally provided by connecting the base portions 11a and 11b, the base portions 11b and 11c, the base portions 11c and 11d, and the base portions 11d and 11a, to form an integral pier bracket device 10E. This pier bracket device 10E is also directly attached to the pier 2.

[0129] The pier brackets 3Ea to 3Ed, all of which have an integral structure and are all attached directly to the pier 2, have base portions 11Ea and 11Ec, which are located on either side of the pier 2, connected via base portions 11Eb and 11Ed, and base portions 11Eb and 11Ed, which are located on either side of the pier 2, connected via base portions 11Ea and 11Ec.

[0130] A jack (not shown) for lifting the superstructure 6 is installed on the upper plate 22E of each support 4E of the multiple pier brackets 3Ea to 3Ed attached to the upper part of the pier 2, for example, during maintenance of the bearings 5. In other words, the support 4 functions as a support surface for the jack when jacking up the superstructure 6 to replace the bearings 5. That is, the upper surface of the support 4 forms the lower surface of the jack-up space. However, the lower surface of the jack-up space may be formed not only by the upper surface of the support 4, but also by the upper surface of the pier 2 and the upper surface of the support 4. That is, the support 4 may be configured to expand the jack-up space. When the support 4 is configured to expand the jack-up space in this way, it is preferable that the height of the upper surface of the base portions 11Ea to 11Ed and the height of the upper surface of the support 4 are the same. The height of the upper surfaces of the base portions 11Ea-11Ed and the support portions 4 do not have to be the same; for example, the height of the upper surfaces of the support portions 4 may be lower than the height of the upper surfaces of the base portions 11Ea-11Ed. Note that a protective member may be provided on the superstructure 6 when jacking up. It is also possible to attach the pier brackets 3Ea-3Ed to the pier 2 during maintenance of the bearings 5, and then remove the pier brackets 3Ea-3Ed from the pier 2 after maintenance of the bearings 5. It is also possible to permanently attach the pier brackets 3Ea-3Ed to the pier 2. The pier brackets 3Ea-3Ed may be used as permanent scaffolding, for example, to enable jacking up at any time.

[0131] The pier brackets 3Ea to 3Ed according to the sixth embodiment described above have the same effects as the pier brackets 3a to 3d according to the first embodiment. Moreover, the pier structure 1E according to the sixth embodiment has the same effects as the pier structure 1 according to the first embodiment. Moreover, even if the pier 2E is cylindrical, the pier structure 1E can install the pier brackets 3Ea to 3Ed having the support portion 4E.

[0132] [Seventh embodiment] A pier structure 1F according to the seventh embodiment will be described, focusing on the parts that differ from the pier structure 1 according to the first embodiment, mainly with reference to Fig. 15. Parts that are similar to those of the pier structure 1 according to the first embodiment (including those that differ only in size) will be given the same reference numerals, and their description will be omitted. FIG. 15 is a plan view schematically showing a main part of a pier structure including a pier bracket according to the seventh embodiment.

[0133] As shown in FIG. 15, in the bridge pier structure 1F according to the seventh embodiment, the pier 2F has a polygonal prism shape. For example, the pier 2F has a hexagonal prism shape. The pier 2F has a top surface 2Fa, a side surface 2Fb, a side surface 2Fc, a side surface 2Fd, a side surface 2Fe, a side surface 2Ff, and a side surface 2Fg. The top surface 2Fa is located at the top end of the pier 2F and is a flat surface that extends horizontally. The side surface 2Fb is provided on one side in the bridge axis direction and is a flat surface that extends vertically and in the direction perpendicular to the bridge axis. The side surface 2Fc is provided on one side in the direction perpendicular to the bridge axis and is a flat surface that extends vertically and at an angle relative to the bridge axis direction. The side surface 2Fd is also provided on one side in the direction perpendicular to the bridge axis and is a flat surface that extends vertically and at an angle relative to the bridge axis direction. The side surface 2Fe is provided on the other side in the bridge axis direction and is a flat surface that extends vertically and in the direction perpendicular to the bridge axis. Side surface 2Ff is located on the other side of the bridge axis perpendicular to the bridge axis, and is a planar surface extending vertically and at an angle relative to the bridge axis direction. Side surface 2Fg is also located on the other side of the bridge axis perpendicular to the bridge axis, and is a planar surface extending vertically and at an angle relative to the bridge axis direction. Side surfaces 2Fb, 2Fc, 2Fd, 2Fe, 2Ff, and 2Fg are arranged in this order around the periphery of pier 2F. On pier 2F, side surfaces 2Fb and 2Fe face opposite each other, side surfaces 2Fc and 2Ff face opposite each other, and side surfaces 2Fd and 2Fg face opposite each other.

[0134] Accordingly, the pier structure 1F is provided with a pier bracket device 10F that is partially different from the pier bracket device 10, instead of the pier bracket device 10. The pier bracket device 10F is provided with pier brackets 3Fa to 3Fd that are partially different from the pier brackets 3a to 3d, instead of the pier brackets 3a to 3d.

[0135] The pier bracket 3Fb has a base portion 11Fb instead of the base portion 11b, and the pier bracket 3Fd has a base portion 11Fd instead of the base portion 11a.

[0136] Pier bracket 3Fa and pier bracket 3Fc have the same shape, and base portion 11Fb of pier bracket 3Fb and base portion 11Fd of pier bracket 3Fd have the same shape. A bearing 5 is installed in the center of the upper surface 2Fa of the pier 2F, and pier bracket 3Fa, base portion 11Fb, pier bracket 3Fc, and base portion 11Fd are arranged in this order on the top of the pier 2F so as to surround this all around in the horizontal direction.

[0137] The pier bracket 3Fa comprises a side portion 12Fa and a vertical support portion 13Fa. The side portion 12Fa is a rectangular flat plate. The vertical support portion 13Fa is a trapezoidal flat plate and is connected to the upper edge of the side portion 12Fa. The vertical support portion 13Fa extends perpendicular to the side portion 12Fa. The pier bracket 3Fa is configured so that the side portion 12Fa and the vertical support portion 13Fa form an L-shaped cross section. The side portion 12Fa and the vertical support portion 13Fa are made of, for example, steel plate, but may be made of a material other than steel plate. Here, the pier bracket 3Fa is made of steel.

[0138] Here, the side surface portion 12Fa and the vertical support portion 13Fa can be connected by welding, or by fastening members, or by bending, similarly to the side surface portion 12a1 and the vertical support portion 13a.

[0139] The base portion 11Fb of the pier bracket 3Fb has a side portion 12Fb1, a side portion 12Fb2, and a vertical support portion 13Fb. The side portions 12Fb1 and 12Fb2 are both rectangular flat plates, and one end edge of the side portion 12Fb2 is connected to one end edge of the side portion 12Fb1 so that they form an obtuse angle. The side portions 12Fb1 and 12Fb2 are connected in a V-shape in plan view, forming an obtuse angle. The vertical support portion 13Fb is flat and connected to the upper end edges of the side portions 12Fb1 and 12Fb2. The vertical support portion 13Fa extends perpendicular to both the side portions 12Fb1 and 12Fb2. The vertical support portion 13Fb has a V-shaped configuration in plan view, with a triangular cutout portion 14Fb on the side opposite to the side portions 12Fb1 and 12Fb2 in the horizontal direction. The base portion 11Fb is configured to have an L-shaped cross section formed by the side portion 12Fb1 and the vertical support portion 13Fb, and is configured to have an L-shaped cross section formed by the side portion 12Fb2 and the vertical support portion 13Fb. The side portions 12Fb1, 12Fb2, and the vertical support portion 13Fb are made of, for example, steel plate, but may be made of a material other than steel plate. Here, the base portion 11Fb is made of steel.

[0140] Here, like side surface portion 12a1 and side surface portion 12a2, side surface portion 12Fb1 and side surface portion 12Fb2 can be connected by welding, by fastening members, or by bending. Similarly, like side surface portion 12a1 and vertical support portion 13a, side surface portion 12Fb1 and vertical support portion 13Fb can be connected by welding, by fastening members, or by bending. Similarly, like side surface portion 12a1 and vertical support portion 13a, side surface portion 12Fb2 and vertical support portion 13Fb can be connected by welding, by fastening members, or by bending.

[0141] The pier bracket 3Fc has a side surface portion 12Fc similar to the side surface portion 12Fa, and a vertical support portion 13Fc similar to the vertical support portion 13Fa.

[0142] The base portion 11Fd of the pier bracket 3Fd has a side portion 12Fd1 similar to the side portion 12Fb1, a side portion 12Fd2 similar to the side portion 12Fb2, and a vertical support portion 13Fd similar to the vertical support portion 13Fb, including a notch 14Fd similar to the notch 14Fb.

[0143] Therefore, the pier bracket 3Fa is provided with a side surface portion 12Fa, the pier bracket 3Fb is provided with a plurality of side surface portions 12Fb1 and 12Fb2, the pier bracket 3Fc is provided with a side surface portion 12Fc, and the pier bracket 3Fd is provided with a plurality of side surface portions 12Fd1 and 12Fd2.

[0144] The pier bracket 3Fa is installed on the pier 2F with its side portion 12Fa abutting against a side surface 2Fb facing horizontally to one side of the pier 2F in the bridge axis direction, and its vertical support portion 13Fa abutting against an upper surface 2Fa facing vertically upward of the pier 2F. The base portion 11Fb of the pier bracket 3Fb is provided on the pier 2F with its side portion 12Fb1 abutting against the side surface 2Fc facing horizontally to one side of the pier 2F in the direction perpendicular to the bridge axis, its side portion 12Fb2 abutting against the side surface 2Fd facing horizontally to one side of the pier 2F in the direction perpendicular to the bridge axis, and its vertical support portion 13Fb abutting against the top surface 2Fa facing vertically upward of the pier 2F. The pier bracket 3Fc is attached to the pier 2F with its side portion 12Fc abutting against the side surface 2Fe facing horizontally to the other side of the pier 2F in the bridge axis direction, and its vertical support portion 13Fc abutting against the upper surface 2Fa facing vertically upward of the pier 2F. The base portion 11Fd of the pier bracket 3Fd is provided on the pier 2F with its side portion 12Fd1 abutting against the side surface 2Ff facing horizontally to the other side of the pier 2F in the direction perpendicular to the bridge axis, its side portion 12Fd2 abutting against the side surface 2Fg facing horizontally to the other side of the pier 2F in the direction perpendicular to the bridge axis, and its vertical support portion 13Fb abutting against the top surface 2Fa facing vertically upward of the pier 2F.

[0145] The pier bracket 3Fa and the pier bracket 3Fb are connected by butting together the edge of the side surface portion 12Fa of the pier bracket 3Fa on the base portion 11Fb side and the edge of the side surface portion 12Fb1 of the base portion 11Fb on the pier bracket 3Fa side. The connection structure for this connection is similar to the connection structure for the base portions 11a and 11b. When the side surface portion 12Fa and the side surface portion 12Fb1 are connected, the opposing edge portions of the vertical support portion 13Fa and the vertical support portion 13Fb also abut against each other.

[0146] Furthermore, the pier bracket 3Fb and the pier bracket 3Fc are connected by butting together the edge of the side surface portion 12Fb2 of the base portion 11Fb facing the pier bracket 3Fc and the edge of the side surface portion 12Fc of the pier bracket 3Fc facing the base portion 11Fb. The connection structure for this connection is similar to the connection structure for the base portions 11a and 11b. When the side surface portion 12Fb2 and the side surface portion 12Fc are connected, the opposing edge portions of the vertical support portion 13Fb and the vertical support portion 13Fc also abut against each other.

[0147] Furthermore, the pier bracket 3Fc and the pier bracket 3Fd are connected by butting the edge of the side surface portion 12Fc of the pier bracket 3Fc on the base portion 11Fd side with the edge of the side surface portion 12Fd1 of the base portion 11Fd on the pier bracket 3Fc side against each other. The connection structure for this connection is similar to the connection structure for the base portions 11a and 11b. When the side surface portion 12Fc and the side surface portion 12Fd1 are connected, the opposing edge portions of the vertical support portion 13Fc and the vertical support portion 13Fd also abut against each other.

[0148] Furthermore, the pier bracket 3Fd and the pier bracket 3Fa are connected by butting the edge of the side surface portion 12Fd2 of the base portion 11Fd facing the pier bracket 3Fa against the edge of the side surface portion 12Fa of the pier bracket 3Fa facing the base portion 11Fd. The connection structure for this connection is similar to the connection structure for the base portions 11a and 11b. When the side surface portion 12Fd2 and the side surface portion 12Fa are connected, the opposing edge portions of the vertical support portion 13Fd and the vertical support portion 13Fa also abut against each other.

[0149] The vertical support portions 13Fa-13Fd are arranged to avoid the bearing 5 by virtue of their inner portions including the cutouts 14Fb and 14Fd. The inner portions of the vertical support portions 13Fa-13Fd including the cutouts 14Fb and 14Fd are hexagonal in shape overall, with the bearing 5 disposed inside thereof. Even when a structure other than the bearing 5 is installed on the top of the pier 2F, the vertical support portions 13Fa-13Fd can be arranged to avoid the structure by virtue of their inner portions including the cutouts 14Fb and 14Fd. Each of the vertical support portions 13Fa-13Fd is configured to be able to transmit a vertical load to the pier 2F by abutting against the upper surface 2Fa of the pier 2F.

[0150] In the pier bracket device 10F, vertical support portions 13Fa to 13Fd of multiple pier brackets 3Fa to 3Fd are provided, in total, around the entire periphery of the upper surface 2Fa of the pier 2. In addition, in the pier bracket device 10F, side surface portions 12Fa, 12Fb1, 12Fb2, 12Fc, 12Fd1, and 12Fd2 of the pier brackets 3Fa to 3Fd are provided, in total, around the entire periphery of the side surfaces 2Fb to 2Fg of the upper portion of the pier 2. Therefore, the pier bracket device 10F has a shape that surrounds the entire upper portion of the pier 2F. In the pier bracket device 10F, the side surface portion 12Fa of the pier bracket 3Fa and the side surface portion 12Fc of the pier bracket 3Fc are provided on both sides of the pier 2F. Furthermore, the pier bracket device 10F is provided with a side surface portion 12Fb1 of the pier bracket 3Fb and a side surface portion 12Fd1 of the pier bracket 3Fd, on both sides of the pier 2F. Furthermore, the pier bracket device 10F is provided with a side surface portion 12Fb2 of the pier bracket 3Fb and a side surface portion 12Fd2 of the pier bracket 3Fd, on both sides of the pier 2F. The multiple pier brackets 3Fa to 3Fd have the side surface portions 12Fa and 12Fb1 connected, the side surface portions 12Fb1 and 12Fb2 connected, the side surface portions 12Fb2 and 12Fc connected, the side surface portions 12Fc and 12Fd1 connected, the side surface portions 12Fd1 and 12Fd2 connected, and the side surface portions 12Fd2 and 12Fa connected.

[0151] In the pier bracket device 10F, a support part 4 is attached to at least one of the side surface parts 12Fa, 12Fb1, 12Fb2, 12Fc, 12Fd1, and 12Fd2. Here, for example, one support part 4 is attached to each of the side surface parts 12Fb1, 12Fb2, 12Fd1, and 12Fd2 of the base parts 11Fb and 11Fd that face in the direction perpendicular to the bridge axis. Therefore, two support parts 4 are attached to each of the base parts 11Fb and 11Fd. The support parts 4 are connected and fixed to each of the side surface parts 12Fb1, 12Fb2, 12Fd1, and 12Fd2 by, for example, welding or using threaded studs, as in the pier structure 1 according to the first embodiment. The plurality of pier brackets 3Fa and 3Fc do not have a support part 4, and the plurality of pier brackets 3Fb and 3Fd have a support part 4.

[0152] The base portion 11Fb and the support portion 4 are integrally formed to form a pier bracket 3Fb of an integral structure, and this pier bracket 3Fb is directly attached to the pier 2. Furthermore, the base portion 11Fb and the support portion 4 are integrally formed to form a pier bracket 3Fb of an integral structure, and this pier bracket 3Fb is directly attached to the pier 2. The multiple pier brackets 3Fa to 3Fd, all of which have an integral structure and are directly attached to the pier 2, are formed integrally by connecting the pier bracket 3Fa to the base portion 11Fb of the pier bracket 3Fb, connecting the base portion 11Fb of the pier bracket 3Fb to the pier bracket 3Fc, connecting the pier bracket 3Fc to the base portion 11Fd of the pier bracket 3Fd, and connecting the base portion 11Fd of the pier bracket 3Fd to the pier bracket 3Fa, thereby forming a pier bracket device 10F of an integral structure. This pier bracket device 10F is also attached directly to the pier 2.

[0153] The multiple pier brackets 3Fa to 3Fd, all of which have an integral structure and are all attached directly to the pier 2, are connected via base portions 11Fb and 11Fd between pier bracket 3Fa and pier bracket 3Fc, which are located on either side of the pier 2, and between base portions 11Fb and 11Fd, which are located on either side of the pier 2, respectively.

[0154] A jack (not shown) for lifting the superstructure 6 is installed on the upper plate 22 of each support 4 of the multiple pier brackets 3Fb, 3Fd attached to the top of the pier 2, for example, during maintenance of the bearings 5. In other words, the support 4 functions as a support surface for the jack when jacking up the superstructure 6 to replace the bearings 5. That is, the upper surface of the support 4 forms the lower surface of the jack-up space. However, the lower surface of the jack-up space may be formed not only by the upper surface of the support 4, but also by the upper surface of the pier 2 and the upper surface of the support 4. That is, the support 4 may be configured to expand the jack-up space. When the support 4 is configured to expand the jack-up space in this way, it is preferable that the height of the upper surface of the base portions 11Fb, 11Fd and the height of the upper surface of the support 4 are the same. The height of the upper surfaces of the base portions 11Fb, 11Fd and the support portion 4 do not have to be the same; for example, the height of the upper surface of the support portion 4 may be lower than the height of the upper surfaces of the base portions 11Fb, 11Fd. Note that a protective member may be provided on the superstructure 6 when jacking up. It is also possible to attach the pier brackets 3Fa to 3Fd to the pier 2 during maintenance of the bearing 5, and then remove the pier brackets 3Fa to 3Fd from the pier 2 after maintenance of the bearing 5. It is also possible to permanently attach the pier brackets 3Fa to 3Fd to the pier 2. The pier brackets 3a to 3d may be permanent scaffolding, for example, to enable jacking up at any time.

[0155] The pier brackets 3Fa to 3Fd according to the seventh embodiment described above have the same effects as the pier brackets 3a to 3d according to the first embodiment. The pier structure 1F according to the seventh embodiment has the same effects as the pier structure 1 according to the first embodiment. Furthermore, even if the pier 2F has a polygonal pillar shape, the pier structure 1F can install pier brackets 3Fb, 3Fd having support portions 4.

[0156] Alternatively, the vertical support portion 13Fb of the base portion 11Fb may be divided into two equal parts in the longitudinal direction, and one of the divided parts of the vertical support portion 13Fb may be connected to the side portion 12Fb1 to form one component, and the other of the divided parts of the vertical support portion 13Fb may be connected to the side portion 12Fb2 to form another component. In this case, these components have the same configuration as the pier bracket 3Fa. The same applies to the base portion 11Fd.

[0157] [Eighth embodiment] A pier structure 1G according to the eighth embodiment will be described, focusing on the parts that differ from the pier structure 1 according to the first embodiment, mainly with reference to Fig. 16. Parts that are similar to those of the pier structure 1 according to the first embodiment (including those that differ only in size) will be assigned the same reference numerals, and their description will be omitted. FIG. 16 is a plan view schematically showing a main part of a pier structure including a pier bracket according to the eighth embodiment.

[0158] As shown in Figure 16, in the bridge pier structure 1G according to the eighth embodiment, the pier 2G is a columnar shaped pier with a horizontal cross section that is approximately shaped like a rice bag. The pier 2G has an upper surface 2Ga, a side surface 2Gb, a side surface 2Gc, a side surface 2Gd, and a side surface 2Ge. The upper surface 2Ga is located at the upper end of the pier 2G and is a flat surface that extends horizontally. The side surface 2Gb is provided on one side in the bridge axis direction and is a flat surface that extends vertically and in the direction perpendicular to the bridge axis. The side surface 2Gc is provided on one side in the direction perpendicular to the bridge axis and is a semi-cylindrical surface that is convex outward and extends vertically. The side surface 2Gd is provided on the other side in the bridge axis direction and is a flat surface that extends vertically and in the direction perpendicular to the bridge axis. The side surface 2Ge is provided on the other side in the direction perpendicular to the bridge axis and is a semi-cylindrical surface that is convex outward and extends vertically. The side surfaces 2Gb, 2Gc, 2Gd, and 2Ge are arranged in this order around the periphery of the pier 2G. The side surfaces 2Gb and 2Gd of the pier 2G face in opposite directions, and the side surfaces 2Gc and 2Ge face in opposite directions.

[0159] Accordingly, the pier structure 1G is provided with a pier bracket device 10G that is partially different from the pier bracket device 10, instead of the pier bracket device 10. The pier bracket device 10G is provided with pier brackets 3Ga to 3Gd that are partially different from the pier brackets 3a to 3d, instead of the pier brackets 3a to 3d.

[0160] The pier bracket 3Ga has a base portion 11Ga instead of the base portion 11a, and the pier bracket 3Gc has a base portion 11Cc instead of the base portion 11c.

[0161] The base portion 11Ga of the pier bracket 3Ga and the base portion 11Gc of the pier bracket 3Gc have the same shape, and the pier bracket 3Gb and the pier bracket 3Gd have the same shape. A bearing 5 is installed in the center of the upper surface 2Ga of the pier 2G, and the base portion 11Ga of the pier bracket 3Ga, pier bracket 3Gb, base portion 11Gc of the pier bracket 3Gc, and pier bracket 3Gd are arranged in this order on the top of the pier 2G so as to surround this all around in the horizontal direction.

[0162] The base portion 11Ga of the pier bracket 3Ga has a side portion 12Ga and a vertical support portion 13Ga. The side portion 12Ga is a rectangular flat plate. The vertical support portion 13Ga is a rectangular flat plate and is connected to the upper edge of the side portion 12Ga. The vertical support portion 13Ga extends perpendicular to the side portion 12Ga. The base portion 11Ga is formed so that the side portion 12Ga and the vertical support portion 13Ga form an L-shaped cross section. The side portion 12Ga and the vertical support portion 13Ga are made of, for example, steel plate, but may be made of a material other than steel plate. Here, the base portion 11Ga is made of steel.

[0163] Here, the side surface portion 12Ga and the vertical support portion 13Ga can be connected by welding, or by fastening members, or by bending, similarly to the side surface portion 12a1 and the vertical support portion 13a.

[0164] The pier bracket 3Gb includes a side portion 12Gb and a vertical support portion 13Gb. The side portion 12Gb is a semicircular curved plate. The vertical support portion 13Gb is flat and connected to the upper edge of the side portion 12Gb. The vertical support portion 13Gb extends perpendicular to the side portion 12Gb. The vertical support portion 13Gb has an arc-like shape in plan view, with a fan-shaped cutout portion 14Gb on the opposite side from the side portion 12Gb in the horizontal direction. The pier bracket 3Gb is configured so that the side portion 12Gb and the vertical support portion 13Gb form an L-shaped cross section. The side portion 12Gb and the vertical support portion 13Gb of the pier bracket 3Gb are made of, for example, steel plate, but may be made of a material other than steel plate. Here, the pier bracket 3Gb is made of steel.

[0165] Here, the side surface portion 12Gb and the vertical support portion 13Gb can be connected by welding or by fastening members, for example, in the same way as the side surface portion 12a1 and the vertical support portion 13a.

[0166] The base portion 11Gc of the pier bracket 3Gc has a side portion 12Gc similar to the side portion 12Ga, and a vertical support portion 13Gc similar to the vertical support portion 13Ga.

[0167] The pier bracket 3Gd has a side surface portion 12Gd similar to the side surface portion 12Gb, and a vertical support portion 13Gd similar to the vertical support portion 13Gb, including a notch portion 14Gd similar to the notch portion 14Gb.

[0168] Therefore, the pier bracket 3Ga is provided with a side surface portion 12Ga, the pier bracket 3Gb is provided with a side surface portion 12Gb, the pier bracket 3Gc is provided with a side surface portion 12Gc, and the pier bracket 3Gd is provided with a side surface portion 12Gd.

[0169] The base portion 11Ga of the pier bracket 3Ga is attached to the pier 2G with the side portion 12Ga abutting against the side surface 2Gb facing horizontally to one side of the pier 2G in the bridge axis direction, and the vertical support portion 13Ga abutting against the upper surface 2Ga facing vertically upward of the pier 2G. The pier bracket 3Gb is attached to the pier 2G with its side portion 12Gb abutting against a side surface 2Gc facing horizontally to one side of the pier 2G perpendicular to the bridge axis, and its vertical support portion 13Gb abutting against an upper surface 2Ga facing vertically upward of the pier 2G. The base portion 11Gc of the pier bracket 3Gc is attached to the pier 2G with the side portion 12Gc abutting against the side surface 2Gd facing horizontally to the other side of the pier 2G in the bridge axis direction, and the vertical support portion 13Gc abutting against the upper surface 2Ga facing vertically upward of the pier 2G. The pier bracket 3Gd is attached to the pier 2G with its side portion 12Gd abutting against the side surface 2Ge facing horizontally to the other side of the pier 2G perpendicular to the bridge axis, and its vertical support portion 13Gb abutting against the upper surface 2Ga facing vertically upward of the pier 2G.

[0170] The edge portion of the side surface portion 12Ga of the base portion 11Ga of the pier bracket 3Ga facing the pier bracket 3Gb and the edge portion of the side surface portion 12Gb of the pier bracket 3Gb facing the base portion 11Ga are butted against each other and connected. The connection structure for this connection is similar to the connection structure for the base portions 11a and 11b. When the side surface portion 12Ga and the side surface portion 12Gb are connected, the opposing edge portions of the vertical support portion 13Ga and the vertical support portion 13Gb also abut against each other.

[0171] Furthermore, the edge of the side surface portion 12Gb of the pier bracket 3Gb facing the base portion 11Gc of the pier bracket 3Gc and the edge of the side surface portion 12Gc of the base portion 11Gc facing the pier bracket 3Gb are butted together and connected. The connection structure for this connection is similar to the connection structure for the base portions 11a and 11b. When the side surface portion 12Gb and the side surface portion 12Gc are connected, the opposing edge portions of the vertical support portion 13Gb and the vertical support portion 13Gc also abut against each other.

[0172] Furthermore, the edge portion of the side surface portion 12Gc of the base portion 11Gc of the pier bracket 3Gc facing the pier bracket 3Gd and the edge portion of the side surface portion 12Gd of the pier bracket 3Gd facing the base portion 11Gc of the pier bracket 3Gc are butted against each other and connected. The connection structure for this connection is similar to the connection structure for the base portions 11a and 11b. When the side surface portion 12Gc and the side surface portion 12Gd are connected, the opposing edge portions of the vertical support portion 13Gc and the vertical support portion 13Gd also abut against each other.

[0173] Furthermore, the edge of the side surface portion 12Gd of the pier bracket 3Gd on the side of the base portion 11Ga of the pier bracket 3Ga and the edge of the side surface portion 12Ga of the base portion 11Ga on the side of the pier bracket 3Gd are butted against each other and connected. The connection structure for this connection is similar to the connection structure for the base portions 11a and 11b. When the side surface portion 12Gd and the side surface portion 12Ga are connected, the opposing edge portions of the vertical support portion 13Gd and the vertical support portion 13Ga also abut against each other.

[0174] The vertical support portions 13Ga-13Gd are provided so as to avoid the bearing 5 by virtue of their inner portions including the cutouts 14Gb and 14Gd. The inner portions of the vertical support portions 13Ga-13Gd including the cutouts 14Gb and 14Gd are shaped as an elongated hole overall, and the bearing 5 is disposed inside the elongated hole. Even when a structure other than the bearing 5 is installed on the top of the pier 2G, the vertical support portions 13Ga-13Gd can be provided so as to avoid the structure by virtue of their inner portions including the cutouts 14Gb and 14Gd. Each of the vertical support portions 13Ga-13Gd is configured to be able to transmit a vertical load to the pier 2G by abutting against the upper surface 2Ga of the pier 2G.

[0175] In the pier bracket device 10G, a plurality of vertical support portions 13Ga-13Gd of a plurality of pier brackets 3Ga-3Gd are provided on the entire circumference of the upper surface 2Ga of the upper part of the pier 2G. Also, in the pier bracket device 10G, a plurality of side surface portions 12Ga-12Gd of a plurality of pier brackets 3Ga-3Gd are provided on the entire circumference of the upper side surfaces 2Gb-2Ge of the pier 2G. Therefore, the pier bracket device 10G has a shape that surrounds the entire upper part of the pier 2G. In the pier bracket device 10G, a side surface portion 12Ga of the pier bracket 3Ga and a side surface portion 12Gc of the pier bracket 3Gc are provided on both sides of the pier 2G. Also, in the pier bracket device 10G, a side surface portion 12Gb of the pier bracket 3Gb and a side surface portion 12Gd of the pier bracket 3Gd are provided on both sides of the pier 2G. The multiple pier brackets 3Ga to 3Gd are connected such that the side portions 12Ga and 12Gb are connected, the side portions 12Gb and 12Gc are connected, the side portions 12Gc and 12Gd are connected, and the side portions 12Gd and 12Ga are connected.

[0176] In the pier bracket device 10G, a support part 4 is attached to at least one of the side surface parts 12Ga to 12Gd. Here, for example, two support parts 4 are attached to each of the side surface parts 12Ga, 12Gc facing the bridge axis direction. Therefore, two support parts 4 are attached to each of the base parts 11Ga, 11Gc. The support parts 4 are connected and fixed to each of the side surface parts 12Ga, 12Gc by, for example, welding or using threaded studs, as in the pier structure 1 according to the first embodiment. A plurality of pier brackets 3Gb, 3Gd do not have a support part 4, and a plurality of pier brackets 3Ga, 3Gc have a support part 4.

[0177] The base portion 11Ga and the support portion 4 are integrally formed to form a pier bracket 3Ga of an integral structure, and this pier bracket 3Ga is directly attached to the pier 2. Furthermore, the base portion 11Gc and the support portion 4 are integrally formed to form a pier bracket 3Gc of an integral structure, and this pier bracket 3Gc is directly attached to the pier 2. The multiple pier brackets 3Ga to 3Gd, all of which have an integral structure and are directly attached to the pier 2, are formed such that the base portion 11Ga of the pier bracket 3Ga is connected to the pier bracket 3Gb, the pier bracket 3Gb is connected to the base portion 11Gc of the pier bracket 3Gc, the base portion 11Gc of the pier bracket 3Gc is connected to the pier bracket 3Fd, and the pier bracket 3Gd is connected to the base portion 11Ga of the pier bracket 3Ga, thereby forming a pier bracket device 10G of an integral structure. This pier bracket device 10G is also directly attached to the pier 2.

[0178] The multiple pier brackets 3Ga to 3Gd, all of which have an integral structure and are all attached directly to the pier 2, are connected via pier brackets 3Gb and 3Gd, with base portions 11Ga and 11Gc of pier bracket 3Ga and pier bracket 3Gc, respectively, located on either side of the pier 2, and with base portions 11Ga and 11Gc of pier bracket 3Gb and pier bracket 3Gd, respectively, located on either side of the pier 2.

[0179] A jack (not shown) for lifting the superstructure 6 is installed on the upper plate 22 of each support 4 of the multiple pier brackets 3Ga, 3Gc attached to the top of the pier 2, for example, during maintenance of the bearings 5. In other words, the support 4 functions as a support surface for the jack when jacking up the superstructure 6 to replace the bearings 5. That is, the upper surface of the support 4 forms the lower surface of the jack-up space. However, the lower surface of the jack-up space may be formed not only by the upper surface of the support 4, but also by the upper surface of the pier 2 and the upper surface of the support 4. That is, the support 4 may be configured to expand the jack-up space. When the support 4 is configured to expand the jack-up space in this way, it is preferable that the height of the upper surface of the base parts 11Ga, 11Gc and the height of the upper surface of the support 4 are the same. The height of the upper surfaces of the base portions 11Ga, 11Gc and the support portion 4 do not have to be the same; for example, the height of the upper surfaces of the support portions 4 may be lower than the height of the upper surfaces of the base portions 11Ga, 11Gc. Note that a protective member may be provided on the superstructure 6 when jacking up. It is also possible to attach the pier brackets 3Ga-3Gd to the pier 2 when performing maintenance on the bearings 5, and then remove the pier brackets 3Ga-3Gd from the pier 2 after the maintenance on the bearings 5. It is also possible to permanently attach the pier brackets 3Ga-3Gd to the pier 2. The pier brackets 3Ga-3Gd may be used as permanent scaffolding, for example, to enable jacking up at any time.

[0180] In the pier structure 1G according to the eighth embodiment described above, the pier brackets 3Ga to 3Gd have the same effects as the pier brackets 3a to 3d according to the first embodiment. Furthermore, in the pier structure 1G, even if the pier 2G has a columnar shape with a bale-shaped horizontal cross section, the pier brackets 3Ga, 3Gc having the support portion 4 can be installed.

[0181] The technical scope of the present disclosure is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present disclosure. For example, the pier brackets 3a-3h, 3Ba-3Bd, 3Ca-3Cd, 3Da-3Dd, 3Ea-3Ed, 3Fa-3Fd, 3Ga-3Gd and the pier structures 1, 1A-1G according to the first to eighth embodiments described above can be modified, for example, as shown in the following modified examples 1-10. Note that modified examples 1-10 will be described using the pier brackets 3a-3d and the pier structure 1 according to the first embodiment as examples, but it is of course also possible to modify the second to eighth embodiments as appropriate in a similar manner.

[0182] <Variation 1> FIG. 17 is a front view schematically showing a main part of a pier structure including a pier bracket according to the first modification. As shown in Figure 17, side surface portions 12a1 and 12b1 of pier brackets 3a and 3b, it is also possible to provide a notch 51 or a slit 52 in an unnecessary portion of at least one of side surface portions 12a1, 12a2, 12b1, 12b2, 12c1, 12c2, 12d1, and 12d2. This configuration allows for weight reduction of pier brackets 3a to 3d.

[0183] <Variation 2> FIG. 18 is a plan view schematically showing a main part of a pier structure including a pier bracket according to the second modification. As shown in Fig. 18, it is also possible to provide a notch 55 in an unnecessary portion of at least one of the vertical support portions 13a to 13d. With this configuration, the weight of the pier brackets 3a to 3d can be reduced.

[0184] <Variation 3> FIG. 19 is a cross-sectional view that schematically shows a main part of a pier structure that includes a pier bracket according to the third modification. As shown in Fig. 19, side surface portions 12a1 and 12d1 of pier brackets 3a and 3d may be provided with at least one flange portion 61 extending outward from the lower end side on at least one of side surface portions 12a1, 12a2, 12b1, 12b2, 12c1, 12c2, 12d1, and 12d2. Also, as shown in Fig. 19, the top end of support portion 4 may be aligned with the top ends of base portions 11a to 11d, as in the case of support portion 4 attached to base portion 11d on the right side.

[0185] <Variation 4> FIG. 20 is a front view schematically showing a main part of a pier structure including a pier bracket according to the fourth modification. As shown in Figure 20, when the heights of the upper parts of the pier 2 are different, it is also possible to arrange the base parts 11a, 11d of the pier brackets 3a, 3d and the base parts 11b, 11c of the pier brackets 3b, 3c at different heights to match this.

[0186] <Variation 5> FIG. 21 is a plan view schematically showing a main part of a pier structure including a pier bracket according to the fifth modification. As shown in FIG. 21, it is also possible to attach the support portion 4 to only one of the side surface portions 12a1, 12a2, 12b1, 12c1, 12c2, 12d1, and 12d1 of the pier brackets 3a to 3d, for example, to only the side surface portions 12a1 and 12b1.

[0187] <Variation 6> FIG. 22 is a side view that schematically shows a main part of a pier structure that includes a pier bracket of the sixth modification. As shown in FIG. 22, the support parts 4 constituting the pier brackets 3a to 3d of the pier structure 1 may be connected to the superstructure 6 by a cable 65 to prevent the superstructure 6 from collapsing.

[0188] <Variation 7> FIG. 23 is a cross-sectional view that schematically shows a main part of a pier structure that includes a pier bracket according to the seventh modification. As shown in Figure 23, the support parts 4 that constitute the pier brackets 3a to 3d of the pier structure 1 may be extended upward, with protrusions 6a protruding from the superstructure 6, and the support parts 4 may be abutted against the protrusions 6a to prevent displacement of the superstructure 6.

[0189] <Variation 8> FIG. 24 is a cross-sectional view that schematically shows a main part of a pier according to the eighth modification. The shape of the pier 2 is not limited to the above, and for example, as shown in FIG. 24, the present disclosure is also applicable to a portal-shaped pier 2 when viewed in the bridge axis direction.

[0190] <Variation 9> FIG. 25 is a cross-sectional view that schematically shows a main part of a pier according to the ninth modification. The present disclosure is also applicable to an L-shaped pier 2, for example, as shown in FIG.

[0191] <Modification 10> FIG. 26 is a cross-sectional view that schematically shows the main part of a pier according to the tenth modification. The present disclosure is also applicable to a T-shaped pier 2, for example, as shown in FIG.

[0192] In addition, it is possible to replace the components in the above embodiments with well-known components as appropriate, without departing from the spirit of the present disclosure.

[0193] (Addendum) The pier bracket and the pier structure according to the above embodiment can be understood, for example, as follows.

[0194] (1) A pier bracket according to one embodiment of the present disclosure comprises a side portion and a vertical support portion connected to the side portion, the vertical support portion being configured to be able to transmit a vertical load to the pier, and being attached to the pier without drilling an attachment hole in the pier.

[0195] This pier bracket can be attached to the pier without drilling holes for anchor bolts in the pier, which reduces the problems that come with drilling holes for anchor bolts, such as reduced workability, reduced pier quality, increased construction costs, longer construction periods, and environmental issues.

[0196] (2) The pier bracket according to (1) above may be configured to be directly attached to the pier.

[0197] With this configuration, the pier bracket can be easily attached to the pier.

[0198] (3) In the pier bracket according to (1) or (2) above, the side surface portion and the vertical support portion may be configured to form an L-shaped cross section.

[0199] With this configuration, the pier bracket can be stably attached to the pier.

[0200] (4) In the pier bracket according to any one of (1) to (3) above, the vertical support portion may be configured to be arranged to avoid structures placed above the pier.

[0201] With this configuration, the pier bracket can be attached to the pier while avoiding structures.

[0202] (5) In the pier bracket according to any one of (1) to (4) above, the vertical support portion may be provided around the entire periphery of the upper portion of the pier.

[0203] With this configuration, the pier bracket can be stably attached to the pier.

[0204] (6) In the pier bracket according to any one of (1) to (5) above, the vertical support portion may be arranged to avoid a structure placed on top of the pier, and the structure may be a support.

[0205] This configuration allows the pier bracket to be placed on top of the pier without interfering with the bearing, eliminating the need to drill holes in the pier and the problems that come with drilling.

[0206] (7) The pier bracket according to (6) above may be configured so that it can temporarily support the superstructure when the support is replaced.

[0207] This configuration makes it possible to replace bearings, etc. When replacing bearings, a jack (hydraulic jack) can be placed on the pier bracket to temporarily support the superstructure, making it possible to secure space for replacing bearings, etc., even when the space above the pier is narrow.

[0208] (8) The pier bracket according to any one of (1) to (6) above may be configured to be permanently attached to the pier to prevent the bridge from collapsing.

[0209] This configuration makes it possible to prevent the bridge from collapsing.

[0210] (9) A pier structure according to one embodiment of the present disclosure may be configured such that a plurality of pier brackets according to any one of (1) to (8) above are provided on a pier, and the plurality of pier brackets are connected to each other.

[0211] With this configuration, multiple pier brackets can be attached to the pier without drilling mounting holes in the pier.

[0212] (10) The pier structure according to (9) above may be configured such that the pier brackets are arranged on both sides of the pier, and these pier brackets are connected to each other.

[0213] With this configuration, multiple pier brackets can be attached to the pier without drilling mounting holes in the pier. [Explanation of symbols]

[0214] 1,1A~1G Bridge Abutment Construction 2,2E~2G bridge feet 3a~3h,3Ba~3Bd,3Ca~3Cd,3Da~3Dd,3Ea~3Ed,3Fa~3Fd,3Ga,3Gd Bridge foot ブラケット 5. Support (structure) 12a1,12a2,12b1,12b2,12c1,12c2,12d1,12d2,12e~12h,12Ea~12Ed,12Fa,12Fb1,12Fb2,12Fc,12Fd1,12Fd2,12Ga~12Gd Lateral portion 13a~13h, 13Ea~13Ed, 13Fa~13Fd, 13Ga~13Gd Vertical support

Claims

1. A side portion and a vertical support portion connected to the side portion, the vertical support portion is configured to be able to transmit a vertical load to the pier when placed on an upper surface of the pier, A pier bracket that is not provided with a hole for attachment to the pier, does not have a hole for attachment drilled in the pier, does not have an adhesive means between the pier and the pier, and is connected to another pier bracket and attached to the pier.

2. A side portion and a vertical support portion connected to the side portion, the vertical support portion is configured to be able to transmit a vertical load to the pier when placed on an upper surface of the pier, A pier bracket that is connected to another pier bracket and installed in contact with the pier without drilling mounting holes in the pier.

3. A pier bracket as described in claim 1 or 2, wherein the side portion is capable of clamping the pier together with other pier brackets.

4. The pier bracket according to claim 1 or 2, which is attached directly to the pier.

5. The pier bracket according to claim 1 or 2, wherein the side surface portions and the vertical support portions form an L-shaped cross section.

6. The pier bracket according to claim 1 or 2, wherein the vertical support portion is provided so as to avoid a structure disposed above the pier.

7. The pier bracket according to claim 6, wherein the vertical support portion is provided around the entire periphery of the upper portion of the pier.

8. The pier bracket of claim 6, wherein the structure is a bearing.

9. The pier bracket according to claim 8, which is capable of temporarily supporting a superstructure when the bearing is replaced.

10. The pier bracket according to claim 1 or 2, which is permanently attached to the pier and can prevent the bridge from falling.

11. A plurality of pier brackets according to claim 1 or 2 are provided on a pier, A pier structure formed by connecting a plurality of the pier brackets to each other.

12. The pier structure according to claim 11, wherein the pier brackets are arranged on both sides of the pier, and the pier brackets are connected to each other.

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