Pier Bracket Mounting Device and Pier Structure

Abstract

Suppress a decrease in workability, a decrease in pier quality, an increase in construction cost, a prolongation of the construction period, etc. 【Solution means】The pier bracket mounting device 3 includes side portions 12a1, 12a2, 12b1, 12b2, 12c1, 12c2, 12d1, 12d2 and vertical support portions 13a to 13d connected to the side portions 12a1, 12a2, 12b1, 12b2, 12c1, 12c2, 12d1, 12d2. The vertical support portions 13a to 13d are configured to be able to transmit a vertical load to the pier 2. A plurality of side portions 12a1, 12a2, 12b1, 12b2, 12c1, 12c2, 12d1, 12d2 are provided, the plurality of side portions 12a1, 12a2, 12b1, 12b2, 12c1, 12c2, 12d1, 12d2 are connected, and a bracket 4 is attached to any one of the plurality of side portions 12a1, 12a2, 12b1, 12b2, 12c1, 12c2, 12d1, 12d2.

Description

Technical Field

[0001] The present disclosure relates to a pier bracket mounting device and a pier structure.

Background Art

[0002] Patent Document 1 discloses a technique for fixing a steel bracket attached to a pier to the pier with anchor bolts.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, fixing with anchor bolts as in Patent Document 1 requires drilling holes for the anchor bolts in the pier, but drilling holes for the anchor bolts in the pier may cause various problems. For example, it may cause a decrease in workability, a decrease in pier quality, an increase in labor costs, a prolongation of the construction period, problems in environmental measures, etc.

[0005] The present disclosure has been made in view of the above circumstances, and an object thereof is to provide a pier bracket mounting device and a pier structure capable of preventing the occurrence of problems that may occur by drilling holes for anchor bolts in the pier.

Means for Solving the Problems

[0006] <1>The pier bracket mounting device according to Aspect 1 of the present disclosure includes a side surface portion and a vertical support portion connected to the side surface portion. The vertical support portion is configured to be able to transmit a vertical load to the pier. A plurality of the side surface portions are provided, the plurality of side surface portions are connected, and a bracket is attached to any one of the plurality of side surface portions.

Effects of the Invention

[0007] According to the present disclosure, it is possible to provide a pier bracket mounting device and a pier structure that can prevent the occurrence of problems that may occur by drilling holes for anchor bolts in the pier.

Brief Description of the Drawings

[0008]

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Modes for Carrying Out the Invention

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

[0010] As shown in FIG. 1, the pier structure 1 according to the first embodiment includes a plurality of piers 2 arranged at intervals in the bridge axis direction, which is the direction in which the bridge extends, a pier bracket mounting device 3 according to the first embodiment attached to the upper part of each of the plurality of piers 2, and a bracket 4 attached to the side opposite to the pier 2 in the horizontal direction of the pier bracket mounting device 3, that is, on the outer side in the horizontal direction. A support 5, which is a structure, is arranged on the upper part of each of the plurality of piers 2, and the supports 5 installed on each of the plurality of piers 2 support the 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 FIGS. 2 to 4, the pier 2 includes 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 a planar surface that is located at the upper end of the pier 2 and extends horizontally. The side surface 2b is provided on one side of the pier 2 in the bridge axis direction and is a planar surface that extends vertically and along a direction perpendicular to the bridge axis. The side surface 2c is provided on one side of the pier 2 in a direction perpendicular to the bridge axis and is a planar surface that extends vertically and along the bridge axis direction. The side surface 2d is provided on the other side of the pier 2 in the bridge axis direction and is a planar surface that extends vertically and along a direction perpendicular to the bridge axis. The side surface 2e is provided on the other side of the pier 2 in a direction perpendicular to the bridge axis and is a planar surface that extends vertically and along the bridge axis direction. The side surfaces 2b, 2c, 2d, and 2e are arranged in this order in the circumferential direction of the pier 2. In the pier 2, the side surface 2b and the side surface 2d face each other in opposite directions, and the side surface 2c and the side surface 2e extend perpendicular to the side surfaces 2b and 2d and face each other in opposite directions.

[0012] The pier bracket mounting device 3 includes a plurality of components 11a to 11d. Specifically, as shown in FIG. 3, the pier bracket mounting device 3 includes four components 11a to 11d. The component 11a and the component 11c have the same shape, and the component 11b and the component 11d have the same shape. The components 11a, 11c and the components 11b, 11d are mirror-symmetrical. On the upper surface 2a of the pier 2, a support 5 is installed at the center thereof, and the components 11a to 11d are provided on the upper part of the pier 2 in the order of the component 11a, the component 11b, the component 11c, and the component 11d so as to surround it entirely in the horizontal direction.

[0013] The component 11a includes a side surface portion 12a1, a side surface portion 12a2, and a vertical support portion 13a. Both the side surface portion 12a1 and the side surface portion 12a2 are rectangular flat plates, and one edge portion of the side surface portion 12a2 is connected to one edge portion of the side surface portion 12a1 so as to be perpendicular to each other. The side surface portion 12a1 and the side surface portion 12a2 are connected in an L shape in plan view. The vertical support portion 13a is a flat plate and is connected to the upper edge portions of the side surface portion 12a1 and the side surface portion 12a2. The vertical support portion 13a extends perpendicular to both the side surface portion 12a1 and the side surface portion 12a2. The vertical support portion 13a forms an L shape in plan view with a notch portion 14a having a rectangular shape in plan view on the side opposite to the side surface portion 12a1 and the side surface portion 12a2 in the horizontal direction. The component 11a is provided so as to have an L-shaped cross section by the side surface portion 12a1 and the vertical support portion 13a, and is provided so as to have an L-shaped cross section by the side surface portion 12a2 and the vertical support portion 13a. The side surface portion 12a1, the side surface portion 12a2, and the vertical support portion 13a are made of, for example, a steel plate, but may be made of a material other than a steel plate. Here, the component 11a is made of steel.

[0014] Here, the side surface portion 12a1 and the vertical support portion 13a can be, for example, a connection structure connected by welding. Alternatively, a flange portion may be provided at the connection portion between the side surface portion 12a1 and the vertical support portion 13a, and these flange portions may be connected by a fastening member having a bolt such as a high-tensile bolt passing through them and a nut screwed onto the bolt. Alternatively, the side surface portion 12a1 and the vertical support portion 13a may be a connection structure having a shape connected by bending a single steel plate. Similarly, the side surface portion 12a2 and the vertical support portion 13a can be a connection structure by welding, or a connection structure by a fastening member, or a connection structure by bending. Also, similarly, the side surface portion 12a1 and the side surface portion 12a2 can be a connection structure by welding, or a connection structure by a fastening member, or a connection structure 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 connection. The above description of the connection structure also applies to the components 11b to 11d in the same way.

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

[0016] The component 11b includes a side portion 12b1, a side portion 12b2, and a vertical support portion 13b. Both the side portion 12b1 and the side portion 12b2 are rectangular flat plates, and one edge of the side portion 12b2 is connected to one edge of the side portion 12b1 so as to be perpendicular to each other. The side portion 12b1 and the side portion 12b2 are connected in an L shape in plan view. The vertical support portion 13b is a flat plate and is connected to the upper edge portions of the side portion 12b1 and the side portion 12b2. The vertical support portion 13b extends perpendicular to both the side portion 12b1 and the side portion 12b2. The vertical support portion 13b forms an L shape in plan view with a notch 14b having a rectangular shape in plan view on the side opposite to the side portion 12b1 and the side portion 12b2 in the horizontal direction. The side portion 12b1, the side 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 component 11d has a vertical support portion 13d similar to the vertical support portion 13b, including a side portion 12d1 similar to the side portion 12b1, a side portion 12d2 similar to the side portion 12b2, and a notch 14d similar to the notch 14b.

[0018] Therefore, the pier bracket mounting device 3 is provided with a plurality of side portions 12a1, 12a2, 12b1, 12b2, 12c1, 12c2, 12d1, 12d2.

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

[0020] Then, the edge portion of the side surface portion 12a1 of the component 11a on the side of the component 11b and the edge portion of the side surface portion 12b1 of the component 11b on the side of the component 11a are butted against each other and connected. The connection structure of this connection is omitted in the drawing. For example, a flange portion is extended outward from the butted edge portions of the side surface portion 12a1 and the side surface portion 12b1, and the flange portions are connected by a fastening member having bolts such as high-tensile bolts passing through these and nuts screwed onto the bolts. When the side surface portion 12a1 and the side surface portion 12b1 are connected, the vertical support portion 13a and the vertical support portion 13b also have the edge portions facing each other in contact.

[0021] Also, the edge portion of the side surface portion 12b2 of the component 11b on the side of the component 11c and the edge portion of the side surface portion 12c2 of the component 11c on the side of the component 11b are butted against each other and connected. The connection structure of this connection is also the same as the connection structure of the component 11a and the component 11b. When the side surface portion 12b2 and the side surface portion 12c2 are connected, the vertical support portion 13b and the vertical support portion 13c also have the edge portions facing each other in contact.

[0022] Further, the edge portion of the side surface portion 12c1 of the component 11c on the side of the component 11d and the edge portion of the side surface portion 12d1 of the component 11d on the side of the component 11c are abutted against each other and connected. The connection structure of this connection is also the same as the connection structure of the components 11a and 11b. When the side surface portion 12c1 and the side surface portion 12d1 are connected, the vertical direction support portions 13c and 13d also have the edge portions facing each other in contact.

[0023] Also, the edge portion of the side surface portion 12d2 of the component 11d on the side of the component 11a and the edge portion of the side surface portion 12a2 of the component 11a on the side of the component 11d are abutted against each other and connected. The connection structure of this connection is also the same as the connection structure of the components 11a and 11b. When the side surface portion 12d2 and the side surface portion 12a2 are connected, the vertical direction support portions 13d and 13a also have the edge portions facing each other in contact.

[0024] And the vertical direction support portion 13a is provided avoiding the support 5 by the notch portion 14a, the vertical direction support portion 13b is provided avoiding the support 5 by the notch portion 14b, the vertical direction support portion 13c is provided avoiding the support 5 by the notch portion 14c, and the vertical direction support portion 13d is provided avoiding the support 5 by the notch portion 14d, respectively. The notch portions 14a to 14d as a whole form a rectangular shape, and the support 5 is arranged inside this rectangle. Even when a structure other than the support 5 is installed on the upper portion of the pier 2, the vertical direction support portions 13a to 13d can be provided avoiding that structure by the notch portions 14a to 14d. The vertical direction support portions 13a to 13d are all configured to be able to transmit the vertical load to the pier 2 by abutting against the upper surface 2a of the pier 2.

[0025] The pier bracket mounting device 3 has a plurality of vertical support portions 13a to 13d provided as a whole on the entire circumference of the upper surface 2a of the upper part of the pier 2. Further, the pier bracket mounting device 3 has side portions 12a1, 12a2, 12b1, 12b2, 12c1, 12c2, 12d1, 12d2 provided as a whole on the entire circumference of the side surfaces 2b, 2c, 2d, 2e of the upper part of the pier 2. Therefore, the pier bracket mounting device 3 has a shape surrounding the upper part of the pier 2 on all sides. The pier bracket mounting device 3 has side portions 12a1, 12b1 provided with the pier 2 interposed therebetween, and side portions 12c1, 12d1. Further, the pier bracket mounting device 3 has side portions 12a2, 12d2 provided with the pier 2 interposed therebetween, and side portions 12b2, 12c2. In the pier bracket mounting device 3, the side portion 12a1 and the side portion 12a2 are connected, the side portion 12a1 and the side portion 12b1 are connected, the side portion 12b1 and the side portion 12b2 are connected, the side portion 12b2 and the side portion 12c2 are connected, the side portion 12c2 and the side portion 12c1 are connected, the side portion 12c1 and the side portion 12d1 are connected, the side portion 12d1 and the side portion 12d2 are connected, and the side portion 12d2 and the side portion 12a2 are connected.

[0026] A bracket 4 is attached to at least any one of the side portions 12a1, 12a2, 12b1, 12b2, 12c1, 12c2, 12d1, 12d2 of the pier bracket mounting device 3. Here, for example, one bracket 4 is attached to each of the side portions 12a1, 12b1, 12c1, 12d1 facing in the bridge axis direction. Therefore, one bracket 4 is attached to each of the components 11a to 11d.

[0027] The bracket 4 includes a contact plate portion 21, an upper plate portion 22, a lower plate portion 23, and a connecting plate portion 24. The contact plate portion 21 is flat and is attached in contact with the corresponding ones of the side surface portions 12a1, 12b1, 12c1, 12d1. The upper plate portion 22 is flat and extends horizontally in a direction opposite to the pier bracket mounting device 3 from the upper edge portion of the contact plate portion 21. The lower plate portion 23 is flat and extends horizontally in a direction opposite to the pier bracket mounting device 3 from the lower edge portion of the contact plate portion 21. The connecting plate portion 24 is flat and extends along the vertical direction to connect the upper plate portion 22 and the lower plate portion 23 and is also connected to the contact plate portion 21. The connecting plate portion 24 extends perpendicular to the contact plate portion 21, the upper plate portion 22, and the lower plate portion 23. Preferably, a plurality of connecting plate portions 24 are provided on the bracket 4. 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 the connecting portions between them are fixed by welding. Therefore, here, the bracket 4 is made of steel.

[0028] The bracket 4 is connected and fixed to each of the side portions 12a1, 12b1, 12c1, and 12d1, for example, by welding (pier non-insertion means). Alternatively, a plurality of studded (pier non-insertion means) are welded to each of the side portions 12a1, 12b1, 12c1, and 12d1 so as to protrude in a direction opposite to the horizontal direction of the pier 2. A corresponding stud is inserted into each of the plurality of through holes formed in the contact plate portion 21 of the bracket 4, and a nut (pier non-insertion means) is screwed onto the portion of each stud protruding from the contact plate portion 21, whereby the contact plate portion 21 is sandwiched between the nut and the corresponding one of the side portions 12a1, 12b1, 12c1, and 12d1 to fix the bracket 4 to the corresponding one of the side portions 12a1, 12b1, 12c1, and 12d1. In either the case of welding or the case of using studs and nuts, the bracket 4 is attached to the side portions 12a1, 12b1, 12c1, and 12d1 by pier non-insertion means that are not inserted into the pier 2. Note that for the connection of the bracket 4 to the side portions 12a1, 12b1, 12c1, and 12d1, various connection structures can be applied as long as means for inserting into the pier 2 are not used. Also, the bracket 4 is not limited to the above configuration. The bracket 4 may have any configuration as long as it is a structure that protrudes from the pier bracket mounting device 3 to the side opposite to the pier 2.

[0029] For example, when performing maintenance on the support 5 or the like, a jack (not shown) for lifting the upper structure 6 is installed on the upper plate portion 22 of the bracket 4 attached to the upper portion of the pier 2 via the pier bracket mounting device 3. After the maintenance of the support 5, the pier bracket mounting device 3 and the bracket 4 can also be removed.

[0030] The pier bracket mounting device 3 according to the first embodiment described above includes a plurality of side portions 12a1, 12a2, 12b1, 12b2, 12c1, 12c2, 12d1, 12d2 connected to vertical support portions 13a to 13d configured to transmit a vertical load to the pier. A bracket 4 is attached to any one of the plurality of side portions 12a1, 12a2, 12b1, 12b2, 12c1, 12c2, 12d1, 12d2, and the plurality of side portions 12a1, 12a2, 12b1, 12b2, 12c1, 12c2, 12d1, 12d2 are connected. Therefore, the bracket 4 can be attached to the pier 2 without drilling holes for anchor bolts in the pier 2. Thus, it is possible to suppress various problems such as a decrease in workability, a decrease in pier quality, an increase in construction cost, a prolongation of the construction period, and problems in environmental measures caused by drilling holes for anchor bolts.

[0031] Here, problems caused by drilling holes for anchor bolts include, for example, a temporary cross-sectional loss of the pier. Also, if the holes for anchor bolts interfere with the reinforcing bars inside the pier, re-drilling is required, which increases the working time and the cross-sectional loss. Further, when the reinforcing bars are densely arranged inside the pier, it becomes difficult to drill the holes for anchor bolts itself, so modification of the pier such as cutting existing reinforcing bars becomes necessary. Also, since the position of the anchor bolts of the bracket is determined after drilling the holes for the anchor bolts of the pier, it leads to a prolongation of the construction period. Since alkaline turbid water containing cement is generated from the holes for anchor bolts, it is necessary to take measures against it, thus increasing the construction cost.

[0032] In contrast, since the pier bracket mounting device 3 according to the first embodiment does not require the use of anchor bolts, the drilling work for the holes for the anchor bolts becomes unnecessary. Therefore, it is possible to suppress a decrease in workability. Further, since drilling of the holes for the anchor bolts is unnecessary, damage to the pier 2 is less likely to occur. Therefore, it is possible to suppress a decrease in the quality of the pier 2. Further, the construction does not depend on the steel bar arrangement of the pier 2. Further, since the shape of the bracket 4 does not depend on the anchor position, it can be prefabricated, leading to a shortening of the overall construction period. Since the shape of the bracket 4 does not depend on the anchor position, mass production with the same shape is possible, leading to a reduction in manufacturing costs. Since the drilling work for the holes for the anchor bolts becomes unnecessary, on-site muddy water treatment becomes unnecessary, leading to a reduction in labor costs and environmental measures.

[0033] Further, since the pier bracket mounting device 3 does not require the use of a binding cable, it is less likely to cause a decrease in workability due to entanglement of the binding cable or the like. Therefore, it is possible to suppress a decrease in workability.

[0034] In addition, the pier bracket mounting device 3 is provided so as to have an L-shaped cross section by the side surface portion 12a1 and the vertical support portion 13a, provided so as to have an L-shaped cross section by the side surface portion 12a2 and the vertical support portion 13a, provided so as to have an L-shaped cross section by the side surface portion 12b1 and the vertical support portion 13b, provided so as to have an L-shaped cross section by the side surface portion 12b2 and the vertical support portion 13b, provided so as to have an L-shaped cross section by the side surface portion 12c1 and the vertical support portion 13c, provided so as to have an L-shaped cross section by the side surface portion 12c2 and the vertical support portion 13c, provided so as to have an L-shaped cross section by the side surface portion 12d1 and the vertical support portion 13d, and provided so as to have an L-shaped cross section by the side surface portion 12d2 and the vertical support portion 13d. Therefore, the pier bracket mounting device 3 can be favorably attached to the pier 2. Note that the pier bracket mounting device 3 does not necessarily have to be provided so as to have an L-shaped cross section by the side surface portion 12a1 and the vertical support portion 13a, does not necessarily have to be provided so as to have an L-shaped cross section by the side surface portion 12a2 and the vertical support portion 13a, does not necessarily have to be provided so as to have an L-shaped cross section by the side surface portion 12b1 and the vertical support portion 13b, does not necessarily have to be provided so as to have an L-shaped cross section by the side surface portion 12b2 and the vertical support portion 13b, does not necessarily have to be provided so as to have an L-shaped cross section by the side surface portion 12c1 and the vertical support portion 13c, does not necessarily have to be provided so as to have an L-shaped cross section by the side surface portion 12c2 and the vertical support portion 13c, does not necessarily have to be provided so as to have an L-shaped cross section by the side surface portion 12d1 and the vertical support portion 13d, and does not necessarily have to be provided so as to have an L-shaped cross section by the side surface portion 12d2 and the vertical support portion 13d.

[0035] In addition, since the vertical support portions 13a to 13d of the pier bracket mounting device 3 are provided while avoiding structures such as the support 5 disposed on the upper portion of the pier 2, the pier bracket mounting device 3 can be favorably attached to the pier 2 while avoiding the structures. Note that the pier bracket mounting device 3 does not necessarily have to be provided while avoiding structures such as the support 5 disposed on the upper portion of the pier 2 by the vertical support portions 13a to 13d.

[0036] In addition, since the vertical support portions 13a to 13d of the pier bracket mounting device 3 are provided as a whole on the entire circumference of the upper portion of the pier 2, the pier bracket mounting device 3 can be favorably mounted on the pier 2. Note that the vertical support portions 13a to 13d of the pier bracket mounting device 3 do not necessarily have to be provided as a whole on the entire circumference of the upper portion of the pier 2.

[0037] In addition, the pier bracket mounting device 3 is configured such that there is no component inserted into the pier 2, and brackets 4 are attached to the side portions 12a1, 12b1, 12c1, 12d1. Therefore, there is no need to drill holes in the pier 2, and problems caused by drilling holes can be avoided. Note that the brackets 4 do not necessarily have to be attached to the side portions 12a1, 12b1, 12c1, 12d1 in the pier bracket mounting device 3 configured such that there is no component inserted into the pier 2.

[0038] In addition, since the brackets 4 are attached to the side portions 12a1, 12b1, 12c1, 12d1 of the pier bracket mounting device 3 by welding, there is no need to drill holes in the pier 2, and problems caused by drilling holes can be avoided. Note that the brackets 4 do not necessarily have to be attached to the side portions 12a1, 12b1, 12c1, 12d1 of the pier bracket mounting device 3 by welding. For example, even if the brackets 4 are attached to the side portions 12a1, 12b1, 12c1, 12d1 of the pier bracket mounting device 3 by screw studs welded thereto, there is no need to drill holes in the pier 2, and problems caused by drilling holes can be avoided.

[0039] In addition, the pier structure 1 according to the first embodiment has the pier bracket mounting device 3 that exhibits the above effects.

[0040] [Second Embodiment] The pier structure 1A according to the second embodiment will be mainly described with reference to FIGS. 5 and 6, focusing on the differences from the pier structure 1 according to the first embodiment. The same reference numerals are given to the same parts (including cases where only the sizes are different) as those of the pier structure 1 according to the first embodiment, and the description thereof will be omitted. FIG. 5 is a front view schematically showing a main part of a pier structure including the pier bracket mounting device according to the second embodiment. FIG. 6 is a plan view schematically showing a main part of a pier structure including the pier bracket mounting device according to the second embodiment.

[0041] As shown in FIGS. 5 and 6, in the pier structure 1A according to the second embodiment, the pier 2 is longer in the direction perpendicular to the bridge axis than the pier structure 1. Accordingly, a pier bracket mounting device 3A that is partially different from the pier bracket mounting device 3 is provided instead of the pier bracket mounting device 3. The pier bracket mounting device 3A includes a plurality of components 11e to 11h in addition to the plurality of components 11a to 11d. Specifically, the pier bracket mounting device 3A includes four components 11e to 11h in addition to the four components 11a to 11d. The components 11e to 11h have the same shape. On the upper surface 2a of the pier 2, a plurality of supports 5 are arranged side by side in the direction perpendicular to the bridge axis at the center thereof, and the components 11a to 11h are provided on the upper part of the pier 2 so as to surround them entirely in the horizontal direction, and are arranged in the order of the component 11a, the component 11e, the component 11f, the component 11b, the component 11c, the component 11g, the component 11h, and the component 11d.

[0042] The component 11e includes a side surface portion 12e and a vertical support portion 13e. Both the side surface portion 12e and the vertical support portion 13e are rectangular flat plates, and one end edge portion of the vertical support portion 13e is connected to one end edge portion of the side surface portion 12e so as to be perpendicular to each other. The component 11e is provided so as to have an L-shaped cross section by the side surface portion 12e and the vertical support portion 13e. The side surface portion 12e and the vertical support portion 13e are made of, for example, steel plates, but may be made of materials other than steel plates. Here, the component 11e is made of steel.

[0043] Here, the connection structure between the side surface 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 side surface portion 12a1 and the vertical support portion 13a. The description of the above connection structure also applies to the components 11f to 11h in the same way.

[0044] The component 11f has a side surface 12f similar to the side surface 12e and a vertical support portion 13f similar to the vertical support portion 13e.

[0045] The component 11g has a side surface 12g similar to the side surface 12e and a vertical support portion 13g similar to the vertical support portion 13e.

[0046] The component 11h has a side surface 12h similar to the side surface 12e and a vertical support portion 13h similar to the vertical support portion 13e.

[0047] Therefore, the pier bracket mounting device 3A is provided with a plurality of side surfaces 12a1, 12a2, 12b1, 12b2, 12c1, 12c2, 12d1, 12d2, 12e to 12h.

[0048] Similar to the pier bracket mounting device 3 according to the first embodiment, the component 11a is provided on the pier 2 such that the side surface 12a1 abuts against the side surface 2b of the pier 2, the side surface 12a2 abuts against the side surface 2e of the pier 2, and the vertical support portion 13a abuts against the upper surface 2a of the pier 2. The component 11b is provided on the pier 2 such that the side surface 12b1 abuts against the side surface 2b of the pier 2, the side surface 12b2 abuts against the side surface 2c of the pier 2, and the vertical support portion 13b abuts against the upper surface 2a of the pier 2. The component 11c is provided on the pier 2 such that the side surface 12c1 abuts against the side surface 2d of the pier 2, the side surface 12c2 abuts against the side surface 2c of the pier 2, and the vertical support portion 13c abuts against the upper surface 2a of the pier 2. The component 11d is provided on the pier 2 such that the side surface 12d1 abuts against the side surface 2d of the pier 2, the side surface 12d2 abuts against the side surface 2e of the pier 2, and the vertical support portion 13d abuts against the upper surface 2a of the pier 2.

[0049] The component 11e is provided adjacent to the component 11b side of the component 11a and is provided on the pier 2 such that the side surface 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.

[0050] The component 11f is provided between the component 11e and the component 11b, adjacent to each of them. The side surface 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.

[0051] The component 11g is provided adjacent to the component 11d side of the component 11c. The side surface 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 provided on the pier 2.

[0052] The component 11h is provided between the component 11g and the component 11d, adjacent to each of them. The side surface 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.

[0053] Then, the edge portion on the component 11e side of the side surface portion 12a1 of the component 11a and the edge portion on the component 11a side of the side surface portion 12e of the component 11e are abutted against each other and connected. For this connection structure, for example, a connection structure similar to the connection structure between the component 11a and the component 11b of the pier bracket mounting device 3 according to the first embodiment can be applied. When the side surface portion 12a1 and the side surface portion 12e are connected, the vertical support portion 13a and the vertical support portion 13e also have the edge portions facing each other abutting against each other.

[0054] Also, the edge portion on the component 11f side of the side surface portion 12e of the component 11e and the edge portion on the component 11e side of the side surface portion 12f of the component 11f are abutted against each other and connected. This connection structure is also the same as the connection structure between the component 11a and the component 11e. When the side surface portion 12e and the side surface portion 12f are connected, the vertical support portion 13e and the vertical support portion 13f also have the edge portions facing each other abutting against each other.

[0055] Further, the edge portion of the side surface portion 12f of the component 11f on the side of the component 11b and the edge portion of the side surface portion 12b1 of the component 11b on the side of the component 11f are abutted against each other and connected. The connection structure of this connection is also the same as the connection structure of the components 11a and 11e. When the side surface portion 12f and the side surface portion 12b1 are connected, the vertical direction support portions 13f and 13b also have the edge portions facing each other in contact.

[0056] Further, the side surface portion 12b2 of the component 11b and the side surface portion 12c2 of the component 11c are connected in the same manner as the pier bracket mounting device 3 according to the first embodiment.

[0057] Further, the edge portion of the side surface portion 12c1 of the component 11c on the side of the component 11g and the edge portion of the side surface portion 12g of the component 11g on the side of the component 11c are abutted against each other and connected. The connection structure of this connection is also the same as the connection structure of the components 11a and 11e. When the side surface portion 12c1 and the side surface portion 12g are connected, the vertical direction support portions 13c and 13g also have the edge portions facing each other in contact.

[0058] Further, the edge portion of the side surface portion 12g of the component 11g on the side of the component 11h and the edge portion of the side surface portion 12h of the component 11h on the side of the component 11g are abutted against each other and connected. The connection structure of this connection is also the same as the connection structure of the components 11a and 11e. When the side surface portion 12g and the side surface portion 12h are connected, the vertical direction support portions 13g and 13h also have the edge portions facing each other in contact.

[0059] Further, the edge portion of the side surface portion 12h of the component 11h on the side of the component 11d and the edge portion of the side surface portion 12d1 of the component 11d on the side of the component 11h are abutted against each other and connected. The connection structure of this connection is also the same as the connection structure of the components 11a and 11e. When the side surface portion 12h and the side surface portion 12d1 are connected, the vertical direction support portions 13h and 13d also have the edge portions facing each other in contact.

[0060] Further, the side surface portion 12d2 of the structural body 11d and the side surface portion 12a2 of the structural body 11a are connected in the same manner as the pier bracket mounting device 3 according to the first embodiment.

[0061] And, in the vertical direction support portions 13a to 13h, the portions including the notch portions 14a to 14d form a rectangular shape as a whole, and a plurality of supports 5 are arranged inside this rectangle. Even when structures other than the plurality of supports 5 are installed on the upper part of the pier 2, the vertical direction support portions 13a to 13h can be provided avoiding such structures. Each of the vertical direction support portions 13a to 13h is configured to be able to transmit a vertical load to the pier 2 by contacting the upper surface 2a of the pier 2.

[0062] In the pier bracket mounting device 3A, a plurality of vertical direction support portions 13a to 13h are provided as a whole around the entire circumference of the upper surface 2a of the upper part of the pier 2. Further, in the pier bracket mounting device 3A, the side surface portions 12a1, 12a2, 12b1, 12b2, 12c1, 12c2, 12d1, 12d2, 12e to 12h are provided as a whole around the entire circumference of the side surfaces 2b to 2e of the upper part of the pier 2. Therefore, the pier bracket mounting device 3A has a shape surrounding the upper part of the pier 2 on all sides. The pier bracket mounting device 3A is provided with side surface portions 12a1, 12e, 12f, 12b1 and side surface portions 12c1, 12g, 12h, 12d1 with the pier 2 interposed therebetween. Also, the pier bracket mounting device 3A is provided with side surface portions 12a2, 12d2 and side surface portions 12b2, 12c2 with the pier 2 interposed therebetween. In the pier bracket mounting device 3A, the side surface portion 12a1 and the side surface portion 12e are connected, the side surface portion 12e and the side surface portion 12f are connected, the side surface portion 12f and the side surface portion 12b1 are connected, the side surface portion 12b1 and the side surface portion 12b2 are connected, the side surface portion 12b2 and the side surface portion 12c2 are connected, the side surface portion 12c2 and the side surface portion 12c1 are connected, the side surface portion 12c1 and the side surface portion 12g are connected, the side surface portion 12g and the side surface portion 12h are connected, the side surface portion 12h and the side surface portion 12d1 are connected, the side surface portion 12d1 and the side surface portion 12d2 are connected, and the side surface portion 12d2 and the side surface portion 12a2 are connected.

[0063] At least one of the side portions 12a1, 12a2, 12b1, 12b2, 12c1, 12c2, 12d1, 12d2, 12e to 12h of the pier bracket mounting device 3A has a bracket 4 attached thereto. Here, for example, one bracket 4 is attached to each of the side portions 12a1, 12b1, 12c1, 12d1, 12e, 12f, 12g, 12h facing the bridge axis direction. Therefore, one bracket 4 is attached to each of the components 11a to 11h.

[0064] The bracket 4 is connected and fixed to each of the side portions 12a1, 12b1, 12c1, 12d1, 12e, 12f, 12g, 12h, for example, by welding or using a screw stud, in the same manner as the pier structure 1 according to the first embodiment.

[0065] For example, when maintaining the support 5 or the like, a jack (not shown) for lifting the upper structure 6 is installed on the upper plate portion 22 on the bracket 4 attached to the upper part of the pier 2 via the pier bracket mounting device 3A.

[0066] The pier structure 1A according to the second embodiment described above has the same effect as the pier bracket mounting device 3 according to the first embodiment. Further, even when the length of the pier 2 in the direction perpendicular to the pier is long, the pier structure 1A can install a number of brackets 4 corresponding to the length. Further, even when the length of the pier 2 in the direction perpendicular to the pier is long, the pier structure 1A can suppress a decrease in workability because the sizes of the components 11a to 11h of the pier bracket mounting device 3A can be kept small.

[0067] [Third Embodiment] The pier structure 1B according to the third embodiment will be mainly described with reference to FIGS. 7 to 9, focusing on the parts different from the pier structure 1 according to the first embodiment. The same parts as those of the pier structure 1 according to the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted. FIG. 7 is a front view schematically showing a main part of a pier structure including a pier bracket mounting device according to the third embodiment. FIG. 8 is a plan view schematically showing a main part of a pier structure including the pier bracket mounting device of the third embodiment. FIG. 9 is a cross-sectional view taken along line IX-IX shown in FIG. 8.

[0068] As shown in FIGS. 7 to 9, the pier structure 1B according to the third embodiment includes the same pier bracket mounting device 3 as the pier bracket mounting device 3. In the pier structure 1B, brackets 4 are respectively attached to the side surface portions 12a2, 12b2, 12c2, 12d2 of the pier bracket mounting device 3 that face the direction perpendicular to the bridge axis, for example, one by one. Therefore, in this case as well, brackets 4 are respectively attached to each of the components 11a to 11d.

[0069] The bracket 4 is connected and fixed to each of the side surface portions 12a2, 12b2, 12c2, 12d2, for example, by welding or using a screw stud, in the same manner as the pier structure 1 according to the first embodiment.

[0070] In the pier structure 1B, a jack (not shown) for lifting the upper structure 6 is installed on the upper plate portion 22 on the bracket 4 attached to the upper part of the pier 2 via the pier bracket mounting device 3, for example, during maintenance of the bearing 5.

[0071] The pier structure 1B according to the third embodiment described above has the same effect as the pier bracket mounting device 3 according to the first embodiment in that the pier bracket mounting device 3 thereof.

[0072] [Fourth Embodiment] The pier structure 1C according to the fourth embodiment will be described mainly with reference to FIGS. 10 and 11, focusing on the parts different from the pier structure 1 according to the first embodiment. The same parts as those of the pier structure 1 according to the first embodiment (including the case where only the size is different) are denoted by the same reference numerals, and the description thereof will be omitted. FIG. 10 is a front view schematically showing a main part of a pier structure including the pier bracket mounting device of the fourth embodiment. FIG. 11 is a plan view schematically showing a main part of a pier structure including the pier bracket mounting device of the fourth embodiment.

[0073] As shown in FIGS. 10 and 11, in the 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. Accordingly, in the pier bracket mounting device 3, the side portions 12a1, 12b1, 12c1, 12d1 facing the bridge axis direction of the components 11a to 11d are longer in the direction perpendicular to the bridge axis. In the pier structure 1C, a plurality of brackets 4, for example, two brackets 4 are attached to each of the side portions 12a1, 12b1, 12c1, 12d1 of the pier bracket mounting device 3. Therefore, in this case, a plurality of brackets 4 are attached to each of the components 11a to 11d.

[0074] The brackets 4 are connected and fixed to each of the side portions 12a1, 12b1, 12c1, 12d1 by using, for example, welding or screw studs, in the same manner as the pier structure 1 according to the first embodiment.

[0075] In the pier structure 1C, a jack (not shown) for lifting the upper structure 6 is installed on the upper plate portion 22 on the brackets 4 attached to the upper part of the pier 2 via the pier bracket mounting device 3, for example, during maintenance of the bearing 5.

[0076] The pier structure 1C according to the third embodiment described above has the same effect as the pier bracket mounting device 3 according to the first embodiment. Further, even when the length of the pier 2 in the direction perpendicular to the pier is long, the pier structure 1C can install the brackets 4 in a number corresponding to the length.

[0077] [Fifth Embodiment] The pier structure 1D according to the fifth embodiment will be mainly described with reference to FIGS. 12 and 13, focusing on the parts different from the pier structure 1 according to the first embodiment. The same parts as those of the pier structure 1 according to the first embodiment (including the case where only the size is different) are denoted by the same reference numerals, and the description thereof will be omitted. FIG. 12 is a front view schematically showing a main part of a pier structure including a pier bracket mounting device according to the fifth embodiment. FIG. 13 is a plan view schematically showing a main part of a pier structure including the pier bracket mounting device of the fifth embodiment.

[0078] As shown in FIGS. 12 and 13, in the 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 mounting device 3D, which is partially different from the pier bracket mounting device 3, is provided instead of the pier bracket mounting device 3. The pier bracket mounting device 3D is provided with a connecting member 30 that connects the side surface portion 12a1 and the side surface portion 12b1 between the constituent body 11a and the constituent body 11b. The connecting member 30 includes a first member 31 that connects the upper part of the side surface portion 12a1 and the upper part of the side surface portion 12b1, a second member 32 that connects the lower part of the side surface portion 12a1 and the lower part of the side surface portion 12b1, a third member 33 that connects the upper part of the side surface portion 12a1 and the lower part of the side surface portion 12b1, and a fourth member 34 that connects the lower part of the side surface portion 12a1 and the upper part of the side surface portion 12b1. The third member 33 and the fourth member 34 intersect, and this intersection part is connected. Therefore, the connecting member 30 forms a plurality of truss structures with the side surface portion 12a1 and the side surface portion 12b1. The pier bracket mounting device 3D is also provided with a similar connecting member 30 that connects the side surface portion 12c1 and the side surface portion 12d1 between the constituent body 11c and the constituent body 11d. Note that the connecting member 30 that connects the side surface portion 12a1 and the side surface portion 12b1 is not limited to the truss structure, and various connection structures can be applied. That is, instead of making the side surface portion 12a1 and the side surface portion 12b1 continuous with a single steel plate, they may be made continuous via another connecting member. In other words, it is not limited to the form in which the side surface portion 12a1 and the side surface portion 12b1 are constituted by a single continuous member, and as shown in FIGS. 12 and 13, they may be configured by connecting between a plurality of side surface portions 12a1 and side surface portions 12b1 with the connecting member 30.

[0079] The pier structure 1D according to the fifth embodiment described above has the same effects as the pier bracket mounting device 3D being the same as the pier bracket mounting device 3 according to the first embodiment. Further, even when the length of the pier 2 in the direction perpendicular to the pier is long, the pier structure 1D can suppress a decrease in workability because the sizes of the respective components 11a to 11d of the pier bracket mounting device 3D can be kept small.

[0080] [Sixth Embodiment] The pier structure 1E according to the sixth embodiment will be mainly described with reference to FIG. 14, centering on the parts different from the pier structure 1 according to the first embodiment. The same parts as those of the pier structure 1 according to the first embodiment (including the case where only the size is different) are denoted by the same reference numerals, and the description thereof is omitted. FIG. 14 is a plan view schematically showing a main part of a pier structure including the pier bracket mounting device of the sixth embodiment.

[0081] As shown in FIG. 14, in the pier structure 1E according to the sixth embodiment, the pier 2E is cylindrical. The pier 2E includes an upper surface 2Ea and a side surface 2Eb. The upper surface 2Ea is a planar surface that is at the upper end of the pier 2E and extends horizontally. The side surface 2Eb is an outer peripheral surface on the radially outer side of the pier 2E and has a cylindrical surface shape extending in the vertical direction.

[0082] Accordingly, the pier structure 1E includes, instead of the pier bracket mounting device 3, a pier bracket mounting device 3E that is partly different from the pier bracket mounting device 3. The pier bracket mounting device 3E includes a plurality of components 11Ea, 11Eb, 11Ec, and 11Ed instead of the plurality of components 11a to 11d. Specifically, the pier bracket mounting device 3E includes four components 11Ea to 11Ed. The components 11Ea to 11Ed have the same shape. A support 5 is to be installed at the center of the upper surface 2Ea of the pier 2E, and the components 11Ea to 11Ed are provided above the pier 2E in the order of the component 11Ea, the component 11Eb, the component 11Ec, and the component 11Ed so as to surround it entirely in the horizontal direction.

[0083] The structure 11Ea includes a side surface portion 12Ea and a vertical support portion 13Ea. The side surface portion 12Ea is a plate-shaped member that curves in accordance with the outer peripheral surface on the radially outer side of the pier 2E. The vertical support portion 13Ea is a flat plate-shaped member and is arc-shaped in a plan view. The edge portion on the radially outer side of the vertical support portion 13Ea is connected to the upper edge portion of the side surface portion 12Ea so that the side surface portion 12Ea and the vertical support portion 13Ea are perpendicular to each other. The vertical support portion 13Ea has an arc shape in a plan view with a notch portion 14Ea that is sector-shaped in a plan view on the side opposite to the side surface portion 12Ea in the horizontal direction. The structure 11Ea is provided so as to have an L-shaped cross section by the side surface portion 12Ea and the vertical support portion 13Ea. The side surface portion 12Ea and the vertical support portion 13Ea are made of, for example, a steel plate, but may be made of a material other than a steel plate. Here, the structure 11Ea is made of steel.

[0084] 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 a fastening member, similar to the side surface portion 12a1 and the vertical support portion 13a. The above description of the connection structure also applies to the structures 11Eb to 11Ed in the same manner.

[0085] The structure 11Eb has a side surface portion 12Eb similar to the side surface portion 12Ea and a vertical support portion 13Eb similar to the vertical support portion 13Ea, and has a notch portion 14Eb similar to the notch portion 14Ea.

[0086] The structure 11Ec has a side surface portion 12Ec similar to the side surface portion 12Ea and a vertical support portion 13Ec similar to the vertical support portion 13Ea, and has a notch portion 14Ec similar to the notch portion 14Ea.

[0087] The structure 11Ed has a side surface portion 12Ed similar to the side surface portion 12Ea and a vertical support portion 13Ed similar to the vertical support portion 13Ea, and has a notch portion 14Ed similar to the notch portion 14Ea.

[0088] Therefore, the pier bracket mounting device 3E is provided with a plurality of side portions 12Ea to 12Ed.

[0089] The structure 11Ea is provided on the pier 2E such that the side portion 12Ea abuts against the side surface 2Eb of the pier 2E and the vertical support portion 13Ea abuts against the upper surface 2Ea of the pier 2E. The structure 11Eb is provided on the pier 2E such that the side portion 12Eb abuts against the side surface 2Eb of the pier 2E and the vertical support portion 13Eb abuts against the upper surface 2Ea of the pier 2E. The structure 11Ec is provided on the pier 2E such that the side portion 12Ec abuts against the side surface 2Eb of the pier 2E and the vertical support portion 13Ec abuts against the upper surface 2Ea of the pier 2E. The structure 11Ed is provided on the pier 2E such that the side portion 12Ed abuts against the side surface 2Eb of the pier 2E and the vertical support portion 13Ed abuts against the upper surface 2Ea of the pier 2E.

[0090] Then, the edge portion of the side portion 12Ea of the structure 11Ea on the side of the structure 11Eb and the edge portion of the side portion 12Eb of the structure 11Eb on the side of the structure 11Ea are abutted against each other and connected. As the connection structure of this connection, for example, a connection structure similar to the connection structure between the structure 11a and the structure 11b of the pier bracket mounting device 3 according to the first embodiment can be applied. When the side portion 12Ea and the side portion 12Eb are connected, the vertical support portions 13Ea and 13Eb also have the edge portions facing each other in contact.

[0091] Also, the edge portion of the side portion 12Eb of the structure 11Eb on the side of the structure 11Ec and the edge portion of the side portion 12Ec of the structure 11Ec on the side of the structure 11Eb are abutted against each other and connected. The connection structure of this connection is also the same as the connection structure of the structure 11Ea and the structure 11Eb. When the side portion 12Eb and the side portion 12Ec are connected, the vertical support portions 13Eb and 13Ec also have the edge portions facing each other in contact.

[0092] Further, the edge portion of the side surface portion 12Ec of the component 11Ec on the side of the component 11Ed and the edge portion of the side surface portion 12Ed of the component 11Ed on the side of the component 11Ec are abutted against each other and connected. The connection structure of this connection is also the same as the connection structure of the components 11Ea and 11Eb. When the side surface portion 12Ec and the side surface portion 12Ed are connected, the vertical support portions 13Ec and 13Ed also have their opposing edge portions abutting against each other.

[0093] Also, the edge portion of the side surface portion 12Ed of the component 11Ed on the side of the component 11Ea and the edge portion of the side surface portion 12Ea of the component 11Ea on the side of the component 11Ed are abutted against each other and connected. The connection structure of this connection is also the same as the connection structure of the components 11Ea and 11Eb. When the side surface portion 12Ed and the side surface portion 12Ea are connected, the vertical support portions 13Ed and 13Ea also have their opposing edge portions abutting against each other.

[0094] And, the radially inner portions of the vertical support portions 13Ea to 13Ed formed by the notches 14Ea to 14Ed are circular as a whole, and the bearing 5 is disposed inside this circle. Even when structures other than the plurality of bearings 5 are installed on the upper portion of the pier 2E, the vertical support portions 13Ea to 13Ed can be provided while avoiding those structures. The vertical support portions 13Ea to 13Ed are each configured to be able to transmit a vertical load to the pier 2E by abutting against the upper surface 2Ea of the pier 2E.

[0095] The pier bracket mounting device 3E has a plurality of vertical support portions 13Ea to 13Ed provided as a whole on the entire circumference of the upper surface 2Ea of the upper part of the pier 2E. Further, the pier bracket mounting device 3E has side portions 12Ea to 12Ed provided as a whole on the entire circumference of the side surface 2Eb of the upper part of the pier 2E. Therefore, the pier bracket mounting device 3E has a shape that surrounds the upper part of the pier 2E on all sides. The pier bracket mounting device 3E has the side portion 12Ea and the side portion 12Ec provided with the pier 2E sandwiched therebetween. Also, the pier bracket mounting device 3E has the side portion 12Eb and the side portion 12Ed provided with the pier 2E sandwiched therebetween. In the pier bracket mounting device 3E, the side portion 12Ea and the side portion 12Eb are connected, the side portion 12Eb and the side portion 12Ec are connected, the side portion 12Ec and the side portion 12Ed are connected, and the side portion 12Ed and the side portion 12Ea are connected.

[0096] A bracket 4E is attached to at least one of the side portions 12Ea to 12Ed of the pier bracket mounting device 3E. Here, for example, one bracket 4E is attached to each of the side portions 12Ea to 12Ed.

[0097] The bracket 4E has a contact plate portion 21E that contacts the pier bracket mounting device 3E and has a shape that curves in accordance with the side portions 12Ea to 12Ed. The bracket 4E has an upper plate portion 22E and a lower plate portion (not shown) connected to the contact plate portion 21E in an arc shape accordingly. The bracket 4E is connected and fixed to each of the side portions 12Ea to 12Ed, for example, by welding or using a screw stud, in the same manner as the pier structure 1 according to the first embodiment.

[0098] For example, when maintaining the support 5 or the like, a jack (not shown) for lifting the upper structure 6 is installed on the upper plate portion 22E of the bracket 4 attached to the upper part of the pier 2E via the pier bracket mounting device 3E.

[0099] The pier structure 1E according to the sixth embodiment described above has the same effects as the pier bracket mounting device 3E as the pier bracket mounting device 3 according to the first embodiment. Further, even if the pier 2E is columnar, the bracket 4E can be installed in the pier structure 1E.

[0100] [Seventh Embodiment] The pier structure 1F according to the seventh embodiment will be mainly described with reference to FIG. 15, focusing on the parts different from the pier structure 1 according to the first embodiment. The same parts as those of the pier structure 1 according to the first embodiment (including the case where only the size is different) are denoted by the same reference numerals, and the description thereof will be omitted. FIG. 15 is a plan view schematically showing a main part of a pier structure including a pier bracket mounting device according to the seventh embodiment.

[0101] As shown in FIG. 15, in the pier structure 1F according to the seventh embodiment, the pier 2F has a polygonal column shape. For example, the pier 2F has a hexagonal column shape. The pier 2F includes an upper surface 2Fa, side surfaces 2Fb, 2Fc, 2Fd, 2Fe, 2Ff, and 2Fg. The upper surface 2Fa is a planar surface that is at the upper end of the pier 2F and extends horizontally. The side surface 2Fb is provided on one side in the bridge axis direction and is a planar surface that extends vertically and along a 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 planar surface that extends vertically and is inclined with respect 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 planar surface that extends vertically and is inclined with respect to the bridge axis direction. The side surface 2Fe is provided on the other side in the bridge axis direction and is a planar surface that extends vertically and along a direction perpendicular to the bridge axis. The side surface 2Ff is provided on the other side in the direction perpendicular to the bridge axis and is a planar surface that extends vertically and is inclined with respect to the bridge axis direction. The side surface 2Fg is also provided on the other side in the direction perpendicular to the bridge axis and is a planar surface that extends vertically and is inclined with respect to the bridge axis direction. The side surfaces 2Fb, 2Fc, 2Fd, 2Fe, 2Ff, and 2Fg are arranged in this order in the circumferential direction of the pier 2F. In the pier 2F, the side surface 2Fb and the side surface 2Fe face each other, the side surface 2Fc and the side surface 2Ff face each other, and the side surface 2Fd and the side surface 2Fg face each other.

[0102] Accordingly, the pier structure 1F is provided with a pier bracket mounting device 3F that is partially different from the pier bracket mounting device 3, in place of the pier bracket mounting device 3. The pier bracket mounting device 3F is provided with a component 11Fa, a component 11Fb, a component 11Fc, and a component 11Fd, in place of the plurality of components 11a to 11d. Specifically, the pier bracket mounting device 3F is provided with four components 11Fa to 11Fd. The component 11Fa and the component 11Fc have the same shape, and the component 11Fb and the component 11Fd have the same shape. On the upper surface 2Fa of the pier 2F, a support 5 will be installed at the center thereof, and the components 11Fa to 11Fd are provided above the pier 2F so as to surround it entirely in the horizontal direction, arranged in the order of the component 11Fa, the component 11Fb, the component 11Fc, and the component 11Fd.

[0103] The component 11Fa includes a side surface portion 12Fa and a vertical support portion 13Fa. The side surface portion 12Fa is in the shape of a rectangular flat plate. The vertical support portion 13Fa is in the shape of a trapezoidal flat plate and is connected to the upper end edge portion of the side surface portion 12Fa. The vertical support portion 13Fa extends perpendicular to the side surface portion 12Fa. The component 11Fa is provided so as to have an L-shaped cross section by the side surface portion 12Fa and the vertical support portion 13Fa. The side surface portion 12Fa and the vertical support portion 13Fa are made of, for example, a steel plate, but may be made of a material other than a steel plate. Here, the component 11Fa is made of steel.

[0104] Here, the side surface portion 12Fa and the vertical support portion 13Fa can be, for example, a connection structure by welding, a connection structure by fastening members, or a connection structure by bending, similar to the side surface portion 12a1 and the vertical support portion 13a.

[0105] The component 11Fb includes a side surface portion 12Fb1, a side surface portion 12Fb2, and a vertical support portion 13Fb. Both the side surface portion 12Fb1 and the side surface portion 12Fb2 are rectangular flat plates, and one edge portion of the side surface portion 12Fb2 is connected to one edge portion of the side surface portion 12Fb1 so as to form an obtuse angle with each other. The side surface portion 12Fb1 and the side surface portion 12Fb2 are connected in a V shape in plan view forming an obtuse angle. The vertical support portion 13Fb is flat plate-shaped and is connected to the upper edge portions of the side surface portion 12Fb1 and the side surface portion 12Fb2. The vertical support portion 13Fa extends perpendicularly to both the side surface portion 12Fb1 and the side surface portion 12Fb2. The vertical support portion 13Fb forms a V shape in plan view where the side opposite to the side surface portion 12Fb1 and the side surface portion 12Fb2 in the horizontal direction has a notch portion 14Fb having a triangular shape in plan view. The component 11Fb is provided so as to have an L-shaped cross section by the side surface portion 12Fb1 and the vertical support portion 13Fb, and is provided so as to have an L-shaped cross section by the side surface portion 12Fb2 and the vertical support portion 13Fb. The side surface portion 12Fb1, the side surface portion 12Fb2, and the vertical support portion 13Fb are made of, for example, a steel plate, but may be made of a material other than a steel plate. Here, the component 11Fb is made of steel.

[0106] Here, the side surface portion 12Fb1 and the side surface portion 12Fb2 can be, for example, the same as the side surface portion 12a1 and the side surface portion 12a2, and can have a connection structure by welding, or a connection structure by a fastening member, or a connection structure by bending. Also, the side surface portion 12Fb1 and the vertical support portion 13Fb can be, for example, the same as the side surface portion 12a1 and the vertical support portion 13a, and can have a connection structure by welding, or a connection structure by a fastening member, or a connection structure by bending. Also, the side surface portion 12Fb2 and the vertical support portion 13Fb can be, for example, the same as the side surface portion 12a1 and the vertical support portion 13a, and can have a connection structure by welding, or a connection structure by a fastening member, or a connection structure by bending.

[0107] The component 11Fc 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.

[0108] The structure 11Fd has a vertical support portion 13Fd similar to the vertical support portion 13Fb, including a side surface portion 12Fd1 similar to the side surface portion 12Fb1, a side surface portion 12Fd2 similar to the side surface portion 12Fb2, and a notch portion 14Fd similar to the notch portion 14Fb.

[0109] Therefore, the pier bracket mounting device 3F is provided with a plurality of side surface portions 12Fa, 12Fb1, 12Fb2, 12Fc, 12Fd1, 12Fd2.

[0110] The structure 11Fa is provided on the pier 2F such that the side surface portion 12Fa abuts against the side surface 2Fb facing the horizontal side on one side in the bridge axis direction of the pier 2F, and the vertical support portion 13Fa abuts against the upper surface 2Fa facing vertically upward of the pier 2F. The structure 11Fb is provided on the pier 2F such that the side surface portion 12Fb1 abuts against the side surface 2Fc facing the horizontal side on one side in the direction perpendicular to the bridge axis of the pier 2F, the side surface portion 12Fb2 abuts against the side surface 2Fd facing the horizontal side on one side in the same direction perpendicular to the bridge axis of the pier 2F, and the vertical support portion 13Fb abuts against the upper surface 2Fa facing vertically upward of the pier 2F. The structure 11Fc is provided on the pier 2F such that the side surface portion 12Fc abuts against the side surface 2Fe facing the horizontal side on the other side in the bridge axis direction of the pier 2F, and the vertical support portion 13Fc abuts against the upper surface 2Fa facing vertically upward of the pier 2F. The structure 11Fd is provided on the pier 2F such that the side surface portion 12Fd1 abuts against the side surface 2Ff facing the horizontal side on the other side in the direction perpendicular to the bridge axis of the pier 2F, the side surface portion 12Fd2 abuts against the side surface 2Fg facing the horizontal side on the other side in the same direction perpendicular to the bridge axis of the pier 2F, and the vertical support portion 13Fb abuts against the upper surface 2Fa facing vertically upward of the pier 2F.

[0111] Then, the edge portion on the side of the structure 11Fb of the side surface portion 12Fa of the structure 11Fa and the edge portion on the side of the structure 11Fa of the side surface portion 12Fb1 of the structure 11Fb are butted against each other and connected. The connection structure of this connection is also the same as the connection structure of the structure 11a and the structure 11b. When the side surface portion 12Fa and the side surface portion 12Fb1 are connected, the edge portions facing each other of the vertical support portion 13Fa and the vertical support portion 13Fb also abut.

[0112] Further, the edge portion of the side surface portion 12Fb2 of the component 11Fb on the side of the component 11Fc and the edge portion of the side surface portion 12Fc of the component 11Fc on the side of the component 11Fb are abutted against each other and connected. The connection structure of this connection is also the same as the connection structure of the components 11a and 11b. When the side surface portion 12Fb2 and the side surface portion 12Fc are connected, the vertical direction support portions 13Fb and 13Fc also have the edge portions facing each other in contact with each other.

[0113] Further, the edge portion of the side surface portion 12Fc of the component 11Fc on the side of the component 11Fd and the edge portion of the side surface portion 12Fd1 of the component 11Fd on the side of the component 11Fc are abutted against each other and connected. The connection structure of this connection is also the same as the connection structure of the components 11a and 11b. When the side surface portion 12Fc and the side surface portion 12Fd1 are connected, the vertical direction support portions 13Fc and 13Fd also have the edge portions facing each other in contact with each other.

[0114] Further, the edge portion of the side surface portion 12Fd2 of the component 11Fd on the side of the component 11Fa and the edge portion of the side surface portion 12Fa of the component 11Fa on the side of the component 11Fd are abutted against each other and connected. The connection structure of this connection is also the same as the connection structure of the components 11a and 11b. When the side surface portion 12Fd2 and the side surface portion 12Fa are connected, the vertical direction support portions 13Fd and 13Fa also have the edge portions facing each other in contact with each other.

[0115] And the vertical direction support portions 13Fa to 13Fd are provided so as to avoid the support 5 by the inner portion including the notch portion 14Fb and the notch portion 14Fd. The inner portion of the vertical direction support portions 13Fa to 13Fd including the notch portion 14Fb and the notch portion 14Fd has a hexagonal shape as a whole, and the support 5 is disposed inside thereof. Even when a structure other than the support 5 is installed on the upper portion of the pier 2F, the vertical direction support portions 13Fa to 13Fd can be provided so as to avoid the structure by the inner portion including the notch portion 14Fb and the notch portion 14Fd. The vertical direction support portions 13Fa to 13Fd are each configured to be able to transmit a vertical load to the pier 2F by abutting against the upper surface 2Fa of the pier 2F.

[0116] The pier bracket mounting device 3F has a plurality of vertical support portions 13Fa to 13Fd provided entirely around the entire circumference of the upper surface 2Fa of the upper part of the pier 2. Further, the pier bracket mounting device 3F has side portions 12Fa, 12Fb1, 12Fb2, 12Fc, 12Fd1, 12Fd2 provided entirely around the entire circumference of the side surfaces 2Fb to 2Fg of the upper part of the pier 2. Therefore, the pier bracket mounting device 3F has a shape that surrounds the upper part of the pier 2F entirely. The pier bracket mounting device 3F is provided with the side portion 12Fa and the side portion 12Fc with the pier 2F sandwiched therebetween. Further, the pier bracket mounting device 3F is provided with the side portion 12Fb1 and the side portion 12Fd1 with the pier 2F sandwiched therebetween. Further, the pier bracket mounting device 3F is provided with the side portion 12Fb2 and the side portion 12Fd2 with the pier 2F sandwiched therebetween. The pier bracket mounting device 3F has the side portion 12Fa and the side portion 12Fb1 connected, the side portion 12Fb1 and the side portion 12Fb2 connected, the side portion 12Fb2 and the side portion 12Fc connected, the side portion 12Fc and the side portion 12Fd1 connected, the side portion 12Fd1 and the side portion 12Fd2 connected, and the side portion 12Fd2 and the side portion 12Fa connected.

[0117] A bracket 4 is attached to at least any one of the side portions 12Fa, 12Fb1, 12Fb2, 12Fc, 12Fd1, 12Fd2 of the pier bracket mounting device 3F. Here, for example, one bracket 4 is attached to each of the side portions 12Fb1, 12Fb2, 12Fd1, 12Fd2 facing in the direction perpendicular to the bridge axis. Therefore, two brackets 4 are attached to each of the structures 11Fb and 11Fd. The bracket 4 is connected and fixed to each of the side portions 12Fb1, 12Fb2, 12Fd1, 12Fd2, for example, by welding or using a threaded stud, in the same manner as the pier structure 1 according to the first embodiment.

[0118] On the bracket 4 attached to the upper part of the pier 2F via the pier bracket mounting device 3F, for example, when performing maintenance on the support 5 or the like, a jack (not shown) for lifting the upper work 6 is installed on the upper plate portion 22.

[0119] The pier structure 1F according to the seventh embodiment described above has the pier bracket mounting device 3F exhibiting the same effects as the pier bracket mounting device 3 according to the first embodiment. Also, even when the pier 2F is polygonal columnar, the bracket 4 can be installed in the pier structure 1F.

[0120] It should be noted that the vertical support portion 13Fb of the component 11Fb may be bisected in the longitudinal direction, and one of the divided vertical support portions 13Fb may be connected to the side surface portion 12Fb1 to form one component, and the other of the divided vertical support portions 13Fb may be connected to the side surface portion 12Fb2 to form another component. In that case, these components will have the same configuration as the component 11Fa. The same applies to the component 11Fd.

[0121] [Eighth Embodiment] The pier structure 1G according to the eighth embodiment will be mainly described with reference to FIG. 16, centering on the parts that are different from the pier structure 1 according to the first embodiment. The same parts (including cases where only the size is different) as those of the pier structure 1 according to the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted. FIG. 16 is a plan view schematically showing a main part of a pier structure including the pier bracket mounting device of the eighth embodiment.

[0122] As shown in FIG. 16, in the pier structure 1G according to the eighth embodiment, the pier 2G has a columnar shape with a substantially rice-bowl-shaped cross section in the horizontal plane. The pier 2G includes 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 a planar surface that is located at the upper end of the pier 2G and extends horizontally. The side surface 2Gb is provided on one side in the bridge axis direction and is a planar surface that extends vertically and along a 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 with an outward convexity that extends in the vertical direction. The side surface 2Gd is provided on the other side in the bridge axis direction and is a planar surface that extends vertically and along a 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 with an outward convexity that extends vertically. The side surfaces 2Gb, 2Gc, 2Gd, and 2Ge are arranged in this order in the circumferential direction of the pier 2G. In the pier 2G, the side surface 2Gb and the side surface 2Gd face each other, and the side surface 2Gc and the side surface 2Ge face each other.

[0123] Accordingly, the pier structure 1G includes a pier bracket mounting device 3G that is partially different from the pier bracket mounting device 3 instead of the pier bracket mounting device 3. The pier bracket mounting device 3G includes components 11Ga to 11Gd instead of the plurality of components 11a to 11d. Specifically, the pier bracket mounting device 3G includes four components 11Ga to 11Gd. The component 11Ga and the component 11Gc have the same shape, and the component 11Gb and the component 11Gd have the same shape. A support 5 will be installed at the center of the upper surface 2Ga of the pier 2G, and the components 11Ga to 11Gd are provided on the upper part of the pier 2G in the order of the component 11Ga, the component 11Gb, the component 11Gc, and the component 11Gd so as to surround it entirely in the horizontal direction.

[0124] The structure 11Ga includes a side surface portion 12Ga and a vertical support portion 13Ga. The side surface portion 12Ga is in the shape of a rectangular flat plate. The vertical support portion 13Ga is in the shape of a rectangular flat plate and is connected to the upper edge portion of the side surface portion 12Ga. The vertical support portion 13Ga extends perpendicular to the side surface portion 12Ga. The structure 11Ga is provided so as to have an L-shaped cross section by the side surface portion 12Ga and the vertical support portion 13Ga. The side surface portion 12Ga and the vertical support portion 13Ga are made of, for example, a steel plate, but they may be made of materials other than the steel plate. Here, the structure 11Ga is made of steel.

[0125] Here, the side surface portion 12Ga and the vertical support portion 13Ga can be, for example, the same as the side surface portion 12a1 and the vertical support portion 13a, and can have a connection structure by welding, or a connection structure by fastening members, or a connection structure by bending.

[0126] The structure 11Gb includes a side surface portion 12Gb and a vertical support portion 13Gb. The side surface portion 12Gb is in the shape of a semi-circular curved plate. The vertical support portion 13Gb is in the shape of a flat plate and is connected to the upper edge portion of the side surface portion 12Gb. The vertical support portion 13Gb extends perpendicular to the side surface portion 12Gb. The vertical support portion 13Gb has an arc shape in plan view with a notch portion 14Gb having a sector shape in plan view on the side opposite to the side surface portion 12Gb in the horizontal direction. The structure 11Gb is provided so as to have an L-shaped cross section by the side surface portion 12Gb and the vertical support portion 13Gb. The structure 11Gb has the side surface portion 12Gb and the vertical support portion 13Gb made of, for example, a steel plate, but they may be made of materials other than the steel plate. Here, the structure 11Gb is made of steel.

[0127] Here, the side surface portion 12Gb and the vertical support portion 13Gb can be, for example, the same as the side surface portion 12a1 and the vertical support portion 13a, and can have a connection structure by welding, or a connection structure by fastening members.

[0128] The component 11Gc has a side surface part 12Gc similar to the side surface part 12Ga and a vertical direction support part 13Gc similar to the vertical direction support part 13Ga.

[0129] The component 11Gd has a side surface part 12Gd similar to the side surface part 12Gb and a vertical direction support part 13Gd similar to the vertical direction support part 13Gb including a notch part 14Gd similar to the notch part 14Gb.

[0130] Therefore, the pier bracket mounting device 3G is provided with a plurality of side surface parts 12Ga, 12Gb, 12Gc, and 12Gd.

[0131] The component 11Ga is provided on the pier 2G such that the side surface part 12Ga abuts on the side surface 2Gb facing the horizontal side on one side in the bridge axis direction of the pier 2G, and the vertical direction support part 13Ga abuts on the upper surface 2Ga facing vertically upward of the pier 2G. The component 11Gb is provided on the pier 2G such that the side surface part 12Gb abuts on the side surface 2Gc facing the horizontal side on one side in the direction perpendicular to the bridge axis of the pier 2G, and the vertical direction support part 13Gb abuts on the upper surface 2Ga facing vertically upward of the pier 2G. The component 11Gc is provided on the pier 2G such that the side surface part 12Gc abuts on the side surface 2Gd facing the horizontal side on the other side in the bridge axis direction of the pier 2G, and the vertical direction support part 13Gc abuts on the upper surface 2Ga facing vertically upward of the pier 2G. The component 11Gd is provided on the pier 2G such that the side surface part 12Gd abuts on the side surface 2Ge facing the horizontal side on the other side in the direction perpendicular to the bridge axis of the pier 2G, and the vertical direction support part 13Gb abuts on the upper surface 2Ga facing vertically upward of the pier 2G.

[0132] Then, the edge part on the component 11Gb side of the side surface part 12Ga of the component 11Ga and the edge part on the component 11Ga side of the side surface part 12Gb of the component 11Gb are butted against each other and connected. The connection structure of this connection is also the same as the connection structure of the components 11a and 11b. When the side surface part 12Ga and the side surface part 12Gb are connected, the edge parts facing each other of the vertical direction support part 13Ga and the vertical direction support part 13Gb also abut.

[0133] Further, the edge portion of the side surface portion 12Gb of the component 11Gb on the side of the component 11Gc and the edge portion of the side surface portion 12Gc of the component 11Gc on the side of the component 11Gb are abutted against each other and connected. The connection structure of this connection is also the same as the connection structure of the components 11a and 11b. When the side surface portion 12Gb and the side surface portion 12Gc are connected, the vertical direction support portions 13Gb and 13Gc also have the edge portions facing each other in contact.

[0134] Further, the edge portion of the side surface portion 12Gc of the component 11Gc on the side of the component 11Gd and the edge portion of the side surface portion 12Gd of the component 11Gd on the side of the component 11Gc are abutted against each other and connected. The connection structure of this connection is also the same as the connection structure of the components 11a and 11b. When the side surface portion 12Gc and the side surface portion 12Gd are connected, the vertical direction support portions 13Gc and 13Gd also have the edge portions facing each other in contact.

[0135] Further, the edge portion of the side surface portion 12Gd of the component 11Gd on the side of the component 11Ga and the edge portion of the side surface portion 12Ga of the component 11Ga on the side of the component 11Gd are abutted against each other and connected. The connection structure of this connection is also the same as the connection structure of the components 11a and 11b. When the side surface portion 12Gd and the side surface portion 12Ga are connected, the vertical direction support portions 13Gd and 13Ga also have the edge portions facing each other in contact.

[0136] And the vertical direction support portions 13Ga to 13Gd are provided so as to avoid the support 5 by the inner portion including the notch portion 14Gb and the notch portion 14Gd. The inner portion of the vertical direction support portions 13Ga to 13Gd including the notch portion 14Gb and the notch portion 14Gd has an elongated hole shape as a whole, and the support 5 is disposed inside thereof. Even when a structure other than the support 5 is installed on the upper portion of the pier 2G, the vertical direction support portions 13Ga to 13Gd can be provided so as to avoid the structure by the inner portion including the notch portion 14Gb and the notch portion 14Gd. The vertical direction support portions 13Ga to 13Gd are each configured to be able to transmit a vertical load to the pier 2G by abutting against the upper surface 2Ga of the pier 2G.

[0137] The pier bracket mounting device 3G has a plurality of vertical support portions 13Ga to 13Gd provided entirely around the entire circumference of the upper surface 2Ga of the upper part of the pier 2G. Also, the pier bracket mounting device 3G has side portions 12Ga to 12Gd provided entirely around the entire circumference of the side surfaces 2Gb to 2Ge of the upper part of the pier 2G. Therefore, the pier bracket mounting device 3G has a shape surrounding the upper part of the pier 2G on all sides. The pier bracket mounting device 3G has the side portion 12Ga and the side portion 12Gc provided with the pier 2G interposed therebetween. Also, the pier bracket mounting device 3G has the side portion 12Gb and the side portion 12Gd provided with the pier 2G interposed therebetween. The pier bracket mounting device 3G has the side portion 12Ga and the side portion 12Gb connected, the side portion 12Gb and the side portion 12Gc connected, the side portion 12Gc and the side portion 12Gd connected, and the side portion 12Gd and the side portion 12Ga connected.

[0138] A bracket 4 is attached to at least any one of the side portions 12Ga to 12Gd of the pier bracket mounting device 3G. Here, for example, two brackets 4 are attached to each of the side portions 12Ga and 12Gc facing the bridge axis direction. Therefore, two brackets 4 are attached to each of the components 11Ga and 11Gc. The bracket 4 is connected and fixed to each of the side portions 12Ga and 12Gc, for example, by welding or using a screw stud, in the same manner as the pier structure 1 according to the first embodiment.

[0139] On the bracket 4 attached to the upper part of the pier 2G via the pier bracket mounting device 3G, for example, when maintaining the support 5 or the like, a jack (not shown) for lifting the upper structure 6 is installed on the upper plate portion 22.

[0140] The pier structure 1G according to the eighth embodiment described above has the pier bracket mounting device 3G exhibiting the same effects as the pier bracket mounting device 3 according to the first embodiment. Also, even if the pier 2G has a columnar shape with a horizontal cross-sectional form, the bracket 4 can be installed in the pier structure 1G.

[0141] Note that 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 bracket mounting devices 3, 3E to 3G and the pier structures 1, 1A to 1G according to the first to eighth embodiments described above can be modified as shown in the following modification examples 1 to 10. Note that modification examples 1 to 10 will be described by taking the case of modifying the pier bracket mounting device 3 and the pier structure 1 according to the first embodiment as an example, but it is of course possible to similarly modify the pier bracket mounting devices 3, 3E to 3G and the pier structures 1A to 1G according to the second to eighth embodiments.

[0142] <Modification Example 1> FIG. 17 is a front view schematically showing a main part of a pier structure including the pier bracket mounting device of Modification Example 1. As shown in FIG. 17 for the side portions 12a1, 12b1 of the pier bracket mounting device 3, it is also possible to provide a notch 51 or a slit 52 in at least any one unnecessary portion among the side portions 12a1, 12a2, 12b1, 12b2, 12c1, 12c2, 12d1, 12d2. With this configuration, the weight of the pier bracket mounting device 3 can be reduced.

[0143] <Modification Example 2> FIG. 18 is a plan view schematically showing a main part of a pier structure including the pier bracket mounting device of Modification Example 2. As shown in FIG. 18, it is also possible to provide a notch 55 in at least any one unnecessary portion among the vertical direction support portions 13a to 13d. With this configuration, the weight of the pier bracket mounting device 3 can be reduced.

[0144] <Modification Example 3> FIG. 19 is a cross-sectional view schematically showing a main part of a pier structure including the pier bracket mounting device of Modification Example 3. As shown in Fig. 19, which depicts the side surfaces 12a1 and 12d1 of the pier bracket mounting device 3, it is also possible to provide at least one flange portion 61 that extends outward from the lower end side on at least one of the side surfaces 12a1, 12a2, 12b1, 12b2, 12c1, 12c2, 12d1, and 12d2. Further, like the bracket 4 attached to the structure 11d on the right side of Fig. 19, the top ends of the bracket 4 and the top ends of the structures 11a to 11d may be aligned.

[0145] <Modification Example 4> Fig. 20 is a front view schematically showing the main part of a pier structure provided with the pier bracket mounting device of Modification Example 4. As shown in Fig. 20, which depicts the structures 11a and 11b, when the heights of the upper parts of the piers 2 are different, accordingly, the structures 11a and 11d of the pier bracket mounting device 3 and the structures 11b and 11c can be arranged at different heights.

[0146] <Modification Example 5> Fig. 21 is a plan view schematically showing the main part of a pier structure provided with the pier bracket mounting device of Modification Example 5. As shown in Fig. 21, it is also possible to attach the bracket 4 only to, for example, the side surfaces 12a1 and 12b1 on one side among the side surfaces 12a1, 12a2, 12b1, 12c1, 12c2, 12d1, and 12d1 of the pier bracket mounting device 3.

[0147] <Modification Example 6> Fig. 22 is a side view schematically showing the main part of a pier structure provided with the pier bracket mounting device of Modification Example 6. As shown in Fig. 22, the bracket 4 attached to the pier bracket mounting device 3 of the pier structure 1 and the upper structure 6 may be connected by a cable 65 to prevent the upper structure 6 from falling.

[0148] <Modification Example 7> Fig. 23 is a cross-sectional view schematically showing the main part of a pier structure provided with the pier bracket mounting device of Modification Example 7. As shown in Fig. 23, the bracket 4 attached to the pier bracket mounting device 3 of the pier structure 1 may be extended upward, a protrusion 6a may be projected from the upper structure 6, and the bracket 4 may be brought into contact with the protrusion 6a to prevent displacement of the upper structure 6.

[0149] <Modification Example 8> Fig. 24 is a cross-sectional view schematically showing a main part of the pier of Modification Example 8. The shape of the pier 2 is not limited to the above. 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.

[0150] <Modification Example 9> Fig. 25 is a cross-sectional view schematically showing a main part of the pier of Modification Example 9. The present disclosure is also applicable to an L-shaped pier 2, for example, as shown in Fig. 25.

[0151] <Modification Example 10> Fig. 26 is a cross-sectional view schematically showing a main part of the pier of Modification Example 10. The present disclosure is also applicable to a T-shaped pier 2, for example, as shown in Fig. 26.

[0152] In addition, within the scope not departing from the spirit of the present disclosure, it is possible to appropriately replace the components in the above-described embodiment with well-known components.

[0153] (Supplementary Note) The pier bracket mounting device and the pier structure according to the above-described embodiment can be understood as follows, for example.

[0154] (1) The pier bracket mounting device according to one aspect of the present disclosure includes a side surface portion and a vertical support portion connected to the side surface portion. The vertical support portion is configured to be able to transmit a vertical load to the pier. A plurality of the side surface portions are provided, the plurality of side surface portions are connected, and a bracket is attached to any one of the plurality of side surface portions.

[0155] This pier bracket mounting device can mount the bracket on the pier without drilling holes for anchor bolts in the pier. Therefore, it is possible to suppress problems such as deterioration of workability, deterioration of pier quality, increase in construction cost, extension of the construction period, and environmental countermeasure problems caused by drilling holes for anchor bolts.

[0156] (2) In the pier bracket mounting device according to (1) above, it may be configured such that it is provided by the side surface portion and the vertical direction support portion so as to have an L-shaped cross section.

[0157] With this configuration, the pier bracket mounting device can be favorably mounted on the pier.

[0158] (3) In the pier bracket mounting device according to (1) or (2) above, it may be configured such that the vertical direction support portion is provided while avoiding a structure disposed on the upper portion of the pier.

[0159] With this configuration, it is possible to avoid the structure and favorably mount the pier bracket mounting device on the pier.

[0160] (4) In the pier bracket mounting device according to any one of (1) to (3) above, it may be configured such that the vertical direction support portion is provided on the entire circumference of the upper portion of the pier.

[0161] With this configuration, the pier bracket mounting device can be favorably mounted on the pier.

[0162] (5) In the pier bracket mounting device according to any one of (1) to (4) above, it may be configured such that the bracket is mounted on the side surface portion by pier non-insertion means that is not inserted into the pier.

[0163] With this configuration, there is no need to drill holes in the pier, and problems caused by drilling holes can be avoided.

[0164] (6) In the pier bracket mounting device according to (5) above, the pier non-insertion means may be configured as welding.

[0165] With this configuration, there is no need to drill holes in the pier, and problems caused by drilling holes can be avoided.

[0166] (7) A pier structure according to an aspect of the present disclosure includes the bracket and the pier bracket mounting device according to any one of (1) to (6) above.

[0167] With this configuration, the provided pier bracket mounting device exhibits the above effects.

Explanation of Reference Numerals

[0168] 1, 1A to 1G Pier structures 2, 2E to 2G Piers 3, 3A, 3D to 3G Pier bracket mounting devices 4, 4E Brackets 5 Supports (structures) 12a1, 12a2, 12b1, 12b2, 12c1, 12c2, 12d1, 12d2, 12e to 12h, 12Ea to 12Ed, 12Fa, 12Fb1, 12Fb2, 12Fc, 12Fd1, 12Fd2, 12Ga to 12Gd Side surfaces 13a to 13h, 13Ea to 13Ed, 13Fa to 13Fd, 13Ga to 13Gd Vertically supporting portions

Claims

1. A side surface portion, and a vertical support portion connected to the side surface portion, and the vertical support portion is configured to be able to transmit a vertical load to the pier, a plurality of the side surface portions are provided, the plurality of side surface portions are connected, a bracket is attached to any one of the plurality of side surface portions, a pier bracket mounting device provided on the pier without drilling a hole for mounting on the pier.

2. The pier bracket mounting device according to claim 1, wherein the side surface portion and the vertical support portion are provided so as to have an L-shaped cross section.

3. The pier bracket mounting device according to claim 1, wherein the vertical support portion is provided avoiding a structure disposed on the upper portion of the pier.

4. The pier bracket mounting device according to claim 3, wherein the vertical support portion is provided on the entire circumference of the upper portion of the pier.

5. The pier bracket mounting device according to claim 1, wherein the bracket is attached to the side surface portion by pier non-insertion means that is not inserted into the pier.

6. The pier bracket mounting device according to claim 5, wherein the pier non-insertion means is welding.

7. The bracket, and a pier structure including the pier bracket mounting device according to any one of claims 1 to 6.

Images