Bridge pier bracket mounting device and bridge pier structure

Abstract

This will help to mitigate issues such as decreased constructability, reduced bridge pier quality, increased construction costs, and prolonged construction periods. [Solution] The pier bracket mounting device 3 comprises side sections 12a1, 12a2, 12b1, 12b2, 12c1, 12c2, 12d1, 12d2 and vertical support sections 13a to 13d connected to the side sections 12a1, 12a2, 12b1, 12b2, 12c1, 12c2, 12d1, 12d2, and the vertical support sections 13a to 13d are configured to transmit vertical loads to the pier 2. Multiple side sections 12a1, 12a2, 12b1, 12b2, 12c1, 12c2, 12d1, 12d2 are provided, and multiple side sections 12a1, 12a2, 12b1, 12b2, 12c1, 12c2, 12d1, 12d2 are connected, and a bracket 4 is attached to one of the multiple side sections 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】 Japanese Patent Application Laid-Open No. 2022-072700 【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, and 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 this disclosure, it is possible to provide a bridge pier bracket mounting device and a bridge pier structure that can prevent problems that may arise from drilling holes for anchor bolts in the bridge pier. [Brief explanation of the drawing] 【0008】 [Figure 1] This is a schematic side view showing a bridge including a pier structure equipped with a pier bracket mounting device according to the first embodiment. [Figure 2] This is a schematic front view showing the main parts of a pier structure equipped with a pier bracket mounting device according to the first embodiment. [Figure 3] This is a schematic plan view showing the main parts of a pier structure equipped with a pier bracket mounting device according to the first embodiment. [Figure 4] This is a cross-sectional view taken along line III-III, as shown in Figure 3. [Figure 5] This is a schematic front view showing the main parts of a pier structure equipped with a pier bracket mounting device according to the second embodiment. [Figure 6] This is a schematic plan view showing the main parts of a pier structure equipped with a pier bracket mounting device according to the second embodiment. [Figure 7] This is a schematic side view showing the main parts of a pier structure equipped with a pier bracket mounting device according to the third embodiment. [Figure 8] This is a schematic plan view showing the main parts of a pier structure equipped with a pier bracket mounting device according to the third embodiment. [Figure 9] Figure 8 shows a cross-sectional view taken along line IX-IX. [Figure 10] This is a schematic front view showing the main parts of a pier structure equipped with a pier bracket mounting device according to the fourth embodiment. [Figure 11] This is a schematic plan view showing the main parts of a pier structure equipped with a pier bracket mounting device according to the fourth embodiment. [Figure 12] This is a schematic front view showing the main parts of a pier structure equipped with a pier bracket mounting device according to the fifth embodiment. [Figure 13]It is a plan view schematically showing a main part of a pier structure provided with a pier bracket mounting device according to the fifth embodiment. [Figure 14] It is a plan view schematically showing a main part of a pier structure provided with a pier bracket mounting device according to the sixth embodiment. [Figure 15] It is a plan view schematically showing a main part of a pier structure provided with a pier bracket mounting device according to the seventh embodiment. [Figure 16] It is a plan view schematically showing a main part of a pier structure provided with a pier bracket mounting device according to the eighth embodiment. [Figure 17] It is a front view schematically showing a main part of a pier structure provided with a pier bracket mounting device of Modification 1. [Figure 18] It is a plan view schematically showing a main part of a pier structure provided with a pier bracket mounting device of Modification 2. [Figure 19] It is a cross-sectional view schematically showing a main part of a pier structure provided with a pier bracket mounting device of Modification 3. [Figure 20] It is a front view schematically showing a main part of a pier structure provided with a pier bracket mounting device of Modification 4. [Figure 21] It is a plan view schematically showing a main part of a pier structure provided with a pier bracket mounting device of Modification 5. [Figure 22] It is a side view schematically showing a main part of a pier structure provided with a pier bracket mounting device of Modification 6. [Figure 23] It is a cross-sectional view schematically showing a main part of a pier structure provided with a pier bracket mounting device of Modification 7. [Figure 24] It is a cross-sectional view schematically showing a main part of a pier of Modification 8. [Figure 25] It is a cross-sectional view schematically showing a main part of a pier of Modification 9. [Figure 26] It is a cross-sectional view schematically showing a main part of a pier of Modification 10. 【Embodiments for Carrying Out the Invention】 【0009】 Hereinafter, with reference to the drawings, a bridge pier bracket mounting device and a bridge pier structure according to one embodiment of this disclosure will be described. [First Embodiment] The pier bracket mounting device and pier structure according to the first embodiment will be described mainly with reference to Figures 1 to 4. Figure 1 is a schematic side view showing a bridge including a pier structure equipped with a pier bracket mounting device according to the first embodiment. Figure 2 is a schematic front view showing the main parts of a pier structure equipped with a pier bracket mounting device according to the first embodiment. Figure 3 is a schematic plan view showing the main parts of a pier structure equipped with a pier bracket mounting device according to the first embodiment. Figure 4 is a cross-sectional view taken along line III-III shown in Figure 3. 【0010】 As shown in Figure 1, the pier structure 1 according to the first embodiment comprises a plurality of piers 2 arranged at intervals in the bridge axis direction, which is the direction in which the bridge extends; 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 of the pier bracket mounting device 3 opposite to the piers 2 in the horizontal direction, i.e., horizontally outward. A structural bearing 5 is placed on the upper part of each of the plurality of piers 2, and the bearings 5 ​​installed on each of the plurality of piers 2 support the superstructure 6 that extends in the bridge axis direction. 【0011】 Pier 2 is made of reinforced concrete, for example, and has a roughly rectangular parallelepiped shape. As shown in Figures 2 to 4, Pier 2 has a top surface 2a, a side surface 2b, a side surface 2c, a side surface 2d, and a side surface 2e. The top surface 2a is a planar surface that extends horizontally at the upper end of Pier 2. The side surface 2b is provided on one side of Pier 2 in the direction of the bridge axis and is a planar surface that extends vertically and perpendicular to the bridge axis. The side surface 2c is provided on one side of Pier 2 perpendicular to the bridge axis and is a planar surface that extends vertically and perpendicular to the bridge axis. The side surface 2d is provided on the other side of Pier 2 in the direction of the bridge axis and is a planar surface that extends vertically and perpendicular to the bridge axis. The side surfaces 2b, 2c, 2d, and 2e are arranged in this order around the periphery of Pier 2. Pier 2 has sides 2b and 2d facing opposite directions, and sides 2c and 2e extending perpendicularly to sides 2b and 2d and facing opposite directions. 【0012】 The pier bracket mounting device 3 comprises multiple components 11a to 11d. Specifically, as shown in Figure 3, the pier bracket mounting device 3 comprises four components 11a to 11d. Component 11a and component 11c have the same shape, and component 11b and component 11d have the same shape. Components 11a, 11c and components 11b, 11d are mirror-symmetrical. A support 5 is installed in the center of the upper surface 2a of the pier 2, and components 11a to 11d are arranged on the upper part of the pier 2 in the order of component 11a, component 11b, component 11c, and component 11d, surrounding the support 5 around its entire circumference in the horizontal direction. 【0013】 The structure 11a comprises a side portion 12a1, a side portion 12a2, and a vertical support portion 13a. Both side portions 12a1 and 12a2 are rectangular flat plates, and one end edge of side portion 12a2 is connected to one end edge of side portion 12a1 so as to be perpendicular to each other. Side portions 12a1 and 12a2 are connected in an L-shape in plan view. The vertical support portion 13a is flat and is connected to the upper end edges of side portions 12a1 and 12a2. The vertical support portion 13a extends perpendicularly to both side portions 12a1 and 12a2. The vertical support portion 13a has an L-shape in plan view, with a rectangular notch 14a on the side opposite to side portions 12a1 and 12a2 in the horizontal direction. The structure 11a is provided with a cross-section that is L-shaped by the side portion 12a1 and the vertical support portion 13a, and also by the side portion 12a2 and the vertical support portion 13a. The side portions 12a1, 12a2 and the vertical support portion 13a are made of, for example, steel plates, but may be made of materials other than steel plates. In this case, the structure 11a is made of steel. 【0014】 Here, the side portion 12a1 and the vertical support portion 13a can be connected by, for example, welding. Alternatively, a flange portion may be provided at the connection point between the side 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, that passes through them, and a nut that is screwed onto this bolt. Alternatively, the side portion 12a1 and the vertical support portion 13a may be connected by bending a single steel plate. The side portion 12a2 and the vertical support portion 13a can also be connected by welding, by fastening members, or by bending. Similarly, the side portions 12a1 and 12a2 can also be connected by welding, by fastening members, or by bending. Of course, the connection structure of each part is not limited to these, and it is acceptable as long as an L-shape is formed after connection. Rigid connections are preferable. The above explanation of the connection structure also applies to components 11b to 11d. 【0015】 The structure 11c has a side portion 12c1 similar to the side portion 12a1, a side portion 12c2 similar to the side portion 12a2, and a vertical support portion 13c similar to the vertical support portion 13a, which includes a notch 14c similar to the notch portion 14a. 【0016】 The structure 11b comprises a side portion 12b1, a side portion 12b2, and a vertical support portion 13b. Both side portions 12b1 and 12b2 are rectangular flat plates, and one end edge of side portion 12b2 is connected to one end edge of side portion 12b1 so as to be perpendicular to each other. Side portions 12b1 and 12b2 are connected in an L-shape in plan view. The vertical support portion 13b is flat and is connected to the upper end edges of side portions 12b1 and 12b2. The vertical support portion 13b extends perpendicularly to both side portions 12b1 and 12b2. In plan view, the vertical support portion 13b has an L-shape with a rectangular notch 14b on the side opposite to side portions 12b1 and 12b2 in the horizontal direction. The side sections 12b1, 12b2, and vertical support section 13b are made of, for example, steel plate, but may be made of a material other than steel plate. 【0017】 The structure 11d has a side portion 12d1 similar to the side portion 12b1, a side portion 12d2 similar to the side portion 12b2, and a vertical support portion 13d similar to the vertical support portion 13b, which includes a notch 14d similar to the notch portion 14b. 【0018】 Therefore, the pier bracket mounting device 3 is provided with multiple side sections 12a1, 12a2, 12b1, 12b2, 12c1, 12c2, 12d1, and 12d2. 【0019】 The structure 11a is installed on the pier 2 such that its side portion 12a1 abuts against the side portion 2b of the pier 2 facing horizontally to one side in the bridge axis direction, its side portion 12a2 abuts against the side portion 2e of the pier 2 facing horizontally to one side in the direction perpendicular to the bridge axis, and its vertical support portion 13a abuts against the upper surface 2a of the pier 2 facing vertically upward. The structure 11b is installed on the pier 2 with its side portion 12b1 in contact with the side portion 2b of the pier 2, its side portion 12b2 in contact with the other horizontal side portion 2c of the pier 2 that is perpendicular to the bridge axis, and its vertical support portion 13b in contact with the upper surface 2a of the pier 2. The structure 11c is provided on the pier 2 with its side portion 12c1 abutting against the side portion 2d of the pier 2 facing the other horizontal side in the direction of the bridge axis, its side portion 12c2 abutting against the side portion 2c of the pier 2, and its vertical support portion 13c abutting against the upper surface 2a of the pier 2. The structure 11d is installed on the pier 2 with its side portion 12d1 in contact with the side portion 2d of the pier 2, its side portion 12d2 in contact with the side portion 2e of the pier 2, and its vertical support portion 13d in contact with the upper surface 2a of the pier 2. 【0020】 Then, the end edge of the side portion 12a1 of component 11a on the component 11b side and the end edge of the side portion 12b1 of component 11b on the component 11a side are abutted against each other and connected. The connection structure for this connection is not shown in the figures, but for example, flange portions extend outward from the abutting ends of the respective side portions 12a1 and 12b1, and these flange portions are connected by a fastening member having a bolt, such as a high-tensile bolt, that passes through them, and a nut that is screwed onto the bolt. When the side portions 12a1 and 12b1 are connected, the vertical support portions 13a and 13b also come into contact with each other at their opposing ends. 【0021】 Furthermore, the edge of the side portion 12b2 of component 11b on the component 11c side and the edge of the side portion 12c2 of component 11c on the component 11b side are butted together and connected. This connection structure is the same as the connection structure of component 11a and component 11b. When the side portion 12b2 and the side portion 12c2 are connected, the vertical support portion 13b and the vertical support portion 13c also come into contact with each other at their opposing edges. 【0022】 Furthermore, the edge of the side portion 12c1 of component 11c on the component 11d side and the edge of the side portion 12d1 of component 11d on the component 11c side are butted together and connected. This connection structure is the same as that of components 11a and 11b. When the side portion 12c1 and the side portion 12d1 are connected, the vertical support portion 13c and the vertical support portion 13d also come into contact with each other at their opposing edges. 【0023】 Furthermore, the edge of the side portion 12d2 of component 11d on the component 11a side and the edge of the side portion 12a2 of component 11a on the component 11d side are butted against each other and connected. This connection structure is the same as the connection structure of component 11a and component 11b. When the side portion 12d2 and the side portion 12a2 are connected, the vertical support portion 13d and the vertical support portion 13a also come into contact with each other at their opposing edges. 【0024】 The vertical support section 13a is provided by a notch 14a, the vertical support section 13b by a notch 14b, the vertical support section 13c by a notch 14c, and the vertical support section 13d by a notch 14d, each avoiding the support 5. The notches 14a to 14d form a rectangle as a whole, and the support 5 is positioned inside this rectangle. Even when structures other than the support 5 are installed on top of the pier 2, the vertical support sections 13a to 13d can be provided avoiding those structures by the notches 14a to 14d. The vertical support sections 13a to 13d are all configured to transmit vertical loads to the pier 2 by contacting the upper surface 2a of the pier 2. 【0025】 The pier bracket mounting device 3 has multiple vertical support sections 13a to 13d that are provided around the entire circumference of the upper surface 2a of the pier 2. Furthermore, the pier bracket mounting device 3 has side sections 12a1, 12a2, 12b1, 12b2, 12c1, 12c2, 12d1, and 12d2 that are provided around the entire circumference of the upper sides 2b, 2c, 2d, and 2e of the pier 2. Therefore, the pier bracket mounting device 3 has a shape that completely surrounds the upper part of the pier 2. The pier bracket mounting device 3 has side sections 12a1, 12b1 and side sections 12c1, 12d1 on either side of the pier 2. Also, the pier bracket mounting device 3 has side sections 12a2, 12d2 and side sections 12b2, 12c2 on either side of the pier 2. The pier bracket mounting device 3 has side sections 12a1 and 12a2 connected, side section 12a1 and 12b1 connected, side section 12b1 and 12b2 connected, side section 12b2 and 12c2 connected, side section 12c2 and 12c1 connected, side section 12c1 and 12d1 connected, side section 12d1 and 12d2 connected, and side section 12d2 and 12a2 connected. 【0026】 A bracket 4 is attached to at least one of the side sections 12a1, 12a2, 12b1, 12b2, 12c1, 12c2, 12d1, and 12d2 of the pier bracket mounting device 3. Here, for example, one bracket 4 is attached to each of the side sections 12a1, 12b1, 12c1, and 12d1 that face in the direction of the bridge axis. Therefore, one bracket 4 is attached to each of the components 11a to 11d. 【0027】 Bracket 4 comprises 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 by contacting the corresponding side portions 12a1, 12b1, 12c1, and 12d1. The upper plate portion 22 is flat and extends horizontally from the upper edge of the contact plate portion 21 in the direction opposite to the pier bracket mounting device 3. The lower plate portion 23 is flat and extends horizontally from the lower edge of the contact plate portion 21 in the direction opposite to the pier bracket mounting device 3. The connecting plate portion 24 is flat and extends vertically, connecting 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 perpendicularly to the contact plate portion 21, the upper plate portion 22, and the lower plate portion 23. It is preferable that the bracket 4 is provided with multiple connecting plate portions 24. The contact plate portion 21, upper plate portion 22, lower plate portion 23, and connecting plate portion 24 are made of, for example, steel plate, and their connecting portions are welded and fixed to each other. Therefore, in this case, the bracket 4 is made of steel. 【0028】 Bracket 4 is connected and fixed to each of the side portions 12a1, 12b1, 12c1, and 12d1, for example, by welding (means for not inserting into the pier). Alternatively, multiple screw studs (means for not inserting into the pier) may be welded to each of the side portions 12a1, 12b1, 12c1, and 12d1 so as to protrude in the direction opposite to the pier 2 horizontally, and the corresponding screw studs may be inserted through each of the multiple through holes formed in the contact plate portion 21 of bracket 4, and nuts (means for not inserting into the pier) may be screwed onto the portion of each screw stud that protrudes from the contact plate portion 21, thereby clamping the contact plate portion 21 between the nut and the corresponding side portions 12a1, 12b1, 12c1, and 12d1, and fixing bracket 4 to the corresponding side portions 12a1, 12b1, 12c1, and 12d1. In both the welding case and the case using screw studs and nuts, the bracket 4 is attached to the side portions 12a1, 12b1, 12c1, and 12d1 by means of non-insertion into the pier 2. Note that various connection structures can be applied to the bracket 4 for connection to the side portions 12a1, 12b1, 12c1, and 12d1, as long as the means of insertion into the pier 2 are not used. Furthermore, the bracket 4 is not limited to the above configuration. The bracket 4 can be any structure that extends from the pier bracket mounting device 3 toward the opposite side of the pier 2. 【0029】 A jack (not shown) is installed on the upper plate portion 22 of the bracket 4, which is attached to the upper part of the pier 2 via the pier bracket mounting device 3, for example, when performing maintenance on the bearing 5 to lift the superstructure 6. After maintenance on the bearing 5, the pier bracket mounting device 3 and the bracket 4 can be removed. 【0030】 The pier bracket mounting device 3 according to the first embodiment described above includes a plurality of side sections 12a1, 12a2, 12b1, 12b2, 12c1, 12c2, 12d1, and 12d2 connected to vertical support sections 13a to 13d that are configured to transmit vertical loads to the pier. The bracket 4 is attached to one of the plurality of side sections 12a1, 12a2, 12b1, 12b2, 12c1, 12c2, 12d1, and 12d2, and the plurality of side sections 12a1, 12a2, 12b1, 12b2, 12c1, 12c2, 12d1, and 12d2 are connected. Therefore, the bracket 4 can be attached to the pier 2 without drilling holes for anchor bolts in the pier 2. Therefore, it is possible to suppress various problems that may arise from drilling holes for anchor bolts, such as reduced workability, decreased bridge pier quality, increased construction costs, prolonged construction periods, and environmental issues. 【0031】 The problems associated with drilling holes for anchor bolts include, for example, the temporary reduction in the cross-sectional area of ​​the bridge pier. Also, if the holes for the anchor bolts interfere with the reinforcing bars inside the bridge pier, re-drilling will be necessary, increasing the working time and the amount of cross-sectional area lost. Furthermore, if the reinforcing bars are densely packed inside the bridge pier, drilling the holes for the anchor bolts becomes difficult, requiring modifications to the bridge pier, such as cutting existing reinforcing bars. In addition, the position of the anchor bolts on the brackets is determined after the holes for the anchor bolts in the bridge pier are drilled, leading to a longer construction period. Since alkaline turbid water containing cement is generated from the holes for the anchor bolts, countermeasures must be taken, thus increasing construction costs. 【0032】 In contrast, the pier bracket mounting device 3 according to the first embodiment does not require the use of anchor bolts, thus eliminating the need to drill holes for anchor bolts. Therefore, a decrease in constructability can be suppressed. Also, because drilling holes for anchor bolts is unnecessary, damage to the pier 2 is less likely to occur. Therefore, a decrease in the quality of the pier 2 can be suppressed. Furthermore, construction does not depend on the reinforcement arrangement of the pier 2. In addition, since the shape of the bracket 4 does not depend on the anchor position, it can be manufactured in advance, leading to a reduction in the overall construction period. Since the shape of the bracket 4 does not depend on the anchor position, mass production of identical shapes is possible, leading to a reduction in manufacturing costs. Because drilling holes for anchor bolts is unnecessary, on-site treatment of turbid water is unnecessary, leading to a reduction in construction costs and environmental protection. 【0033】 Furthermore, since the pier bracket mounting device 3 does not require the use of securing cables, it is less likely to cause a decrease in workability due to entanglement of securing cables, etc. Therefore, a decrease in workability can be suppressed. 【0034】 Furthermore, the pier bracket mounting device 3 is provided with a cross-sectional L-shape formed by the side portion 12a1 and the vertical support portion 13a, the cross-sectional L-shape formed by the side portion 12a2 and the vertical support portion 13a, the cross-sectional L-shape formed by the side portion 12b1 and the vertical support portion 13b, the cross-sectional L-shape formed by the side portion 12b2 and the vertical support portion 13b, the cross-sectional L-shape formed by the side portion 12c1 and the vertical support portion 13c, the cross-sectional L-shape formed by the side portion 12c2 and the vertical support portion 13c, the cross-sectional L-shape formed by the side portion 12d1 and the vertical support portion 13d, and the cross-sectional L-shape formed by the side portion 12d2 and the vertical support portion 13d. Therefore, the pier bracket mounting device 3 can be properly attached to the pier 2. Furthermore, the pier bracket mounting device 3 does not have to be provided in an L-shape in cross-section by the side portion 12a1 and the vertical support portion 13a, nor does it have to be provided in an L-shape in cross-section by the side portion 12a2 and the vertical support portion 13a, nor does it have to be provided in an L-shape in cross-section by the side portion 12b1 and the vertical support portion 13b, nor does it have to be provided in an L-shape in cross-section by the side portion 12b2 and the vertical support portion 13b, nor does it have to be provided in an L-shape in cross-section by the side portion 12c1 and the vertical support portion 13c, nor does it have to be provided in an L-shape in cross-section by the side portion 12c2 and the vertical support portion 13c, nor does it have to be provided in an L-shape in cross-section by the side portion 12d1 and the vertical support portion 13d, nor does it have to be provided in an L-shape in cross-section by the side portion 12d2 and the vertical support portion 13d. 【0035】 Furthermore, since the vertical support sections 13a to 13d of the pier bracket mounting device 3 are positioned to avoid structures such as the bearings 5 ​​located on the upper part of the pier 2, the pier bracket mounting device 3 can be properly attached to the pier 2 while avoiding these structures. However, the vertical support sections 13a to 13d of the pier bracket mounting device 3 do not necessarily have to be positioned to avoid structures such as the bearings 5 ​​located on the upper part of the pier 2. 【0036】 Furthermore, since the vertical support sections 13a to 13d of the pier bracket mounting device 3 are provided around the entire circumference of the upper part of the pier 2, the pier bracket mounting device 3 can be securely attached to the pier 2. However, the vertical support sections 13a to 13d of the pier bracket mounting device 3 do not necessarily have to be provided around the entire circumference of the upper part of the pier 2. 【0037】 Furthermore, the pier bracket mounting device 3 has a configuration in which there is nothing inserted into the pier 2, and the brackets 4 are attached to the side portions 12a1, 12b1, 12c1, and 12d1, thus eliminating the need to drill holes in the pier 2 and avoiding problems caused by drilling. Note that the pier bracket mounting device 3 has a configuration in which there is nothing inserted into the pier 2, and it is not necessary for the brackets 4 to be attached to the side portions 12a1, 12b1, 12c1, and 12d1. 【0038】 Furthermore, since the bracket 4 is attached to the side portions 12a1, 12b1, 12c1, and 12d1 of the pier bracket mounting device 3 by welding, there is no need to drill holes in the pier 2, thus avoiding problems caused by drilling. However, the bracket 4 does not necessarily have to be attached to the side portions 12a1, 12b1, 12c1, and 12d1 of the pier bracket mounting device 3 by welding. For example, even if the bracket 4 is attached to the side portions 12a1, 12b1, 12c1, and 12d1 of the pier bracket mounting device 3 by welded screw studs, there is no need to drill holes in the pier 2, thus avoiding problems caused by drilling. 【0039】 Furthermore, the pier structure 1 according to the first embodiment provides the above-mentioned effect through the pier bracket mounting device 3 it is equipped with. 【0040】 [Second Embodiment] The pier structure 1A according to the second embodiment will be described, mainly with reference to Figures 5 and 6, focusing on the parts that differ from the pier structure 1 according to the first embodiment. Parts that are the same as those in the pier structure 1 according to the first embodiment (including cases where only the size differs) are denoted by the same reference numerals, and their descriptions are omitted. Figure 5 is a schematic front view showing the main parts of a pier structure equipped with a pier bracket mounting device according to the second embodiment. Figure 6 is a schematic plan view showing the main parts of a pier structure equipped with a pier bracket mounting device according to the second embodiment. 【0041】 As shown in Figures 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, and accordingly, a pier bracket mounting device 3A, which is partially different from the pier bracket mounting device 3, is provided in place of the pier bracket mounting device 3. The pier bracket mounting device 3A includes multiple components 11a to 11d, as well as multiple components 11e, 11f, 11g, and 11h. Specifically, the pier bracket mounting device 3A includes four components 11a to 11d, as well as four components 11e to 11h. Components 11e to 11h have the same shape. On the upper surface 2a of the pier 2, multiple supports 5 are installed in the center, arranged in a direction perpendicular to the bridge axis, and structures 11a to 11h are provided on the upper part of the pier 2 in the order of structure 11a, structure 11e, structure 11f, structure 11b, structure 11c, structure 11g, structure 11h, and structure 11d, so as to surround these horizontally around the entire circumference. 【0042】 The structure 11e comprises a side portion 12e and a vertical support portion 13e. Both the side portion 12e and the vertical support portion 13e are rectangular flat plates, and one end edge of the vertical support portion 13e is connected to one end edge of the side portion 12e so as to be perpendicular to each other. The structure 11e is provided so as to have an L-shaped cross-section due to the side portion 12e and the vertical support portion 13e. The side 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. In this case, the structure 11e is made of steel. 【0043】 Here, the connection structure between the side portion 12e and the vertical support portion 13e can be, for example, a welding connection structure, a fastening member connection structure, or a bending connection structure, similar to the connection structure between the side portion 12a1 and the vertical support portion 13a. The above explanation of the connection structure also applies to components 11f to 11h. 【0044】 The structure 11f has a side portion 12f similar to the side portion 12e and a vertical support portion 13f similar to the vertical support portion 13e. 【0045】 The component 11g has a side portion 12g similar to the side portion 12e and a vertical support portion 13g similar to the vertical support portion 13e. 【0046】 The structure 11h has a side portion 12h similar to the side portion 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 multiple side sections 12a1, 12a2, 12b1, 12b2, 12c1, 12c2, 12d1, 12d2, 12e to 12h. 【0048】 Component 11a is installed on the pier 2 with its side portion 12a1 abutting against the side portion 2b of the pier 2, its side portion 12a2 abutting against the side portion 2e of the pier 2, and its vertical support portion 13a abutting against the upper surface 2a of the pier 2, similar to the pier bracket mounting device 3 according to the first embodiment. Component 11b is installed on the pier 2 with its side portion 12b1 abutting against the side portion 2b of the pier 2, its side portion 12b2 abutting against the side portion 2c of the pier 2, and its vertical support portion 13b abutting against the upper surface 2a of the pier 2. Component 11c is installed on the pier 2 with its side portion 12c1 abutting against the side portion 2d of the pier 2, its side portion 12c2 abutting against the side portion 2c of the pier 2, and its vertical support portion 13c abutting against the upper surface 2a of the pier 2. The structure 11d is installed on the pier 2 with its side portion 12d1 in contact with the side portion 2d of the pier 2, its side portion 12d2 in contact with the side portion 2e of the pier 2, and its vertical support portion 13d in contact with the upper surface 2a of the pier 2. 【0049】 The component 11e is provided adjacent to the component 11b side of the component 11a, with its side portion 12e abutting against the side portion 2b of the pier 2, and its vertical support portion 13e abutting against the upper surface 2a of the pier 2, thus being provided on the pier 2. 【0050】 The component 11f is provided between the components 11e and 11b, adjacent to each of them, with its side portion 12f in contact with the side portion 2b of the pier 2, and its vertical support portion 13f in contact with the upper surface 2a of the pier 2, thus being provided on the pier 2. 【0051】 The component 11g is provided adjacent to the component 11d side of the component 11c, with its side portion 12g in contact with the side portion 2d of the pier 2, and its vertical support portion 13g in contact with the upper surface 2a of the pier 2, thus being provided on the pier 2. 【0052】 The component 11h is provided between the components 11g and 11d, adjacent to each of them, with its side portion 12h in contact with the side portion 2d of the pier 2 and its vertical support portion 13h in contact with the upper surface 2a of the pier 2, thus being provided on the pier 2. 【0053】 Then, the end edge of the side portion 12a1 of component 11a on the component 11e side and the end edge of the side portion 12e of component 11e on the component 11a side are abutted against each other and connected. This connection structure can be the same as, for example, the connection structure between component 11a and component 11b in the pier bracket mounting device 3 according to the first embodiment. When the side portion 12a1 and the side portion 12e are connected, the vertical support portion 13a and the vertical support portion 13e also come into contact with each other at their opposing end portions. 【0054】 Furthermore, the edge of the side portion 12e of component 11e on the component 11f side and the edge of the side portion 12f of component 11f on the component 11e side are butted together and connected. This connection structure is the same as the connection structure of component 11a and component 11e. When the side portion 12e and the side portion 12f are connected, the vertical support portion 13e and the vertical support portion 13f also come into contact with each other at their opposing edges. 【0055】 Furthermore, the edge of the side portion 12f of component 11f on the component 11b side and the edge of the side portion 12b1 of component 11b on the component 11f side are butted together and connected. This connection structure is the same as the connection structure of components 11a and 11e. When the side portion 12f and the side portion 12b1 are connected, the vertical support portion 13f and the vertical support portion 13b also come into contact with each other at their opposing edges. 【0056】 Furthermore, the side portion 12b2 of component 11b and the side portion 12c2 of component 11c are connected in the same manner as the pier bracket mounting device 3 according to the first embodiment. 【0057】 Furthermore, the edge of the side portion 12c1 of component 11c on the component 11g side and the edge of the side portion 12g of component 11g on the component 11c side are butted together and connected. This connection structure is the same as that of components 11a and 11e. When the side portion 12c1 and the side portion 12g are connected, the vertical support portion 13c and the vertical support portion 13g also come into contact with each other at their opposing edges. 【0058】 Furthermore, the edge of the side portion 12g of component 11g on the component 11h side and the edge of the side portion 12h of component 11h on the component 11g side are butted together and connected. This connection structure is the same as the connection structure of components 11a and 11e. When the side portion 12g and the side portion 12h are connected, the vertical support portion 13g and the vertical support portion 13h also come into contact with each other at their opposing edges. 【0059】 Furthermore, the edge of the side portion 12h of component 11h on the component 11d side and the edge of the side portion 12d1 of component 11d on the component 11h side are butted together and connected. This connection structure is the same as the connection structure of components 11a and 11e. When the side portion 12h and the side portion 12d1 are connected, the vertical support portion 13h and the vertical support portion 13d also come into contact with each other at their opposing edges. 【0060】 Furthermore, the side portion 12d2 of component 11d and the side portion 12a2 of component 11a are connected in the same manner as the pier bracket mounting device 3 according to the first embodiment. 【0061】 Furthermore, the vertical support sections 13a to 13h, including the notches 14a to 14d, form a rectangular shape as a whole, and multiple supports 5 are arranged inside this rectangle. Even when structures other than the multiple supports 5 are installed on top of the pier 2, the vertical support sections 13a to 13h can be installed while avoiding those structures. All of the vertical support sections 13a to 13h are configured to transmit vertical loads to the pier 2 by contacting the upper surface 2a of the pier 2. 【0062】 The pier bracket mounting device 3A has multiple vertical support sections 13a to 13h that are provided around the entire circumference of the upper surface 2a of the pier 2. In addition, the pier bracket mounting device 3A has side sections 12a1, 12a2, 12b1, 12b2, 12c1, 12c2, 12d1, 12d2, 12e to 12h that are provided around the entire circumference of the upper side sections 2b to 2e of the pier 2. Therefore, the pier bracket mounting device 3A has a shape that surrounds the entire upper part of the pier 2. The pier bracket mounting device 3A has side sections 12a1, 12e, 12f, 12b1 and side sections 12c1, 12g, 12h, 12d1 on either side of the pier 2. Furthermore, the pier bracket mounting device 3A is provided with side sections 12a2, 12d2 and side sections 12b2, 12c2 on either side of the pier 2. The pier bracket mounting device 3A is connected to side section 12a1 and side section 12e, side section 12e and side section 12f, side section 12f and side section 12b1, side section 12b1 and side section 12b2, side section 12b2 and side section 12c2, side section 12c2 and side section 12c1, side section 12c1 and side section 12g, side section 12g and side section 12h, side section 12h and side section 12d1, side section 12d1 and side section 12d2, and side section 12d2 and side section 12a2. 【0063】 A bracket 4 is attached to at least one of the side sections 12a1, 12a2, 12b1, 12b2, 12c1, 12c2, 12d1, 12d2, 12e to 12h of the pier bracket mounting device 3A. Here, for example, one bracket 4 is attached to each of the side sections 12a1, 12b1, 12c1, 12d1, 12e, 12f, 12g, and 12h that face in the direction of the bridge axis. 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, and 12h, for example, by welding or using screw studs, similar to the bridge pier structure 1 according to the first embodiment. 【0065】 A jack (not shown) is installed on the upper plate portion 22 of the bracket 4, which is attached to the upper part of the pier 2 via the pier bracket mounting device 3A, for example, when performing maintenance on the support 5 to lift the superstructure 6. 【0066】 In the pier structure 1A according to the second embodiment described above, the pier bracket mounting device 3A provides the same effects as the pier bracket mounting device 3 according to the first embodiment. Furthermore, even when the length of the pier 2 in the direction perpendicular to the pier is long, the pier structure 1A allows for the installation of a number of brackets 4 corresponding to the length. In addition, even when the length of the pier 2 in the direction perpendicular to the pier is long, the pier structure 1A allows for the size of each component 11a to 11h of the pier bracket mounting device 3A to be kept small, thereby suppressing a decrease in constructability. 【0067】 [Third Embodiment] The pier structure 1B according to the third embodiment will be described, mainly with reference to Figures 7 to 9, focusing on the parts that differ from the pier structure 1 according to the first embodiment. Parts that are the same as those in the pier structure 1 according to the first embodiment are denoted by the same reference numerals, and their descriptions are omitted. Figure 7 is a schematic front view showing the main parts of a pier structure equipped with a pier bracket mounting device according to the third embodiment. Figure 8 is a schematic plan view showing the main parts of a pier structure equipped with a pier bracket mounting device according to the third embodiment. Figure 9 is a cross-sectional view taken along line IX-IX as shown in Figure 8. 【0068】 As shown in Figures 7 to 9, the pier structure 1B according to the third embodiment is equipped with a pier bracket mounting device 3 similar to the pier bracket mounting device 3. In the pier structure 1B, one bracket 4 is attached to each of the side portions 12a2, 12b2, 12c2, and 12d2 of the pier bracket mounting device 3 that face perpendicular to the bridge axis. Therefore, in this case as well, one bracket 4 is attached to each of the components 11a to 11d. 【0069】 The bracket 4 is connected and fixed to each of the side portions 12a2, 12b2, 12c2, and 12d2, for example, by welding or using screw studs, similar to the bridge pier structure 1 according to the first embodiment. 【0070】 In the pier structure 1B, a bracket 4 attached to the upper part of the pier 2 via a pier bracket mounting device 3 has a jack (not shown) installed on the upper plate portion 22 to lift the superstructure 6, for example, during maintenance of the bearing 5. 【0071】 The pier structure 1B according to the third embodiment described above has a pier bracket mounting device 3 that provides the same effects as the pier bracket mounting device 3 according to the first embodiment. 【0072】 [Fourth Embodiment] The pier structure 1C according to the fourth embodiment will be described mainly with reference to Figures 10 and 11, focusing on the parts that differ from the pier structure 1 according to the first embodiment. Parts that are the same as those in the pier structure 1 according to the first embodiment (including cases where only the size differs) are denoted by the same reference numerals, and their descriptions are omitted. Figure 10 is a schematic front view showing the main parts of a pier structure equipped with a pier bracket mounting device according to the fourth embodiment. Figure 11 is a schematic plan view showing the main parts of a pier structure equipped with a pier bracket mounting device according to the fourth embodiment. 【0073】 As shown in Figures 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, the pier bracket mounting device 3 has side portions 12a1, 12b1, 12c1, and 12d1 of the components 11a to 11d that face in the direction perpendicular to the bridge axis and are therefore longer in that direction. In the pier structure 1C, multiple brackets 4 are attached to each of the side portions 12a1, 12b1, 12c1, and 12d1 of the pier bracket mounting device 3, for example, two brackets each. Therefore, in this case, multiple brackets 4 are attached to each of the components 11a to 11d. 【0074】 The bracket 4 is connected and fixed to each of the side portions 12a1, 12b1, 12c1, and 12d1, for example, by welding or using screw studs, similar to the bridge pier structure 1 according to the first embodiment. 【0075】 In the pier structure 1C, a jack (not shown) is installed on the upper plate portion 22 of the bracket 4, which is attached to the upper part of the pier 2 via the pier bracket mounting device 3, for example, when performing maintenance on the support 5 to lift the superstructure 6. 【0076】 The pier structure 1C according to the third embodiment described above has a pier bracket mounting device 3 that provides the same effects as the pier bracket mounting device 3 according to the first embodiment. Furthermore, even when the length of the pier 2 in the direction perpendicular to the pier is long, the pier structure 1C allows for the installation of a number of brackets 4 corresponding to the length. 【0077】 [Fifth Embodiment] The pier structure 1D according to the fifth embodiment will be described primarily with reference to Figures 12 and 13, focusing on the differences from the pier structure 1 according to the first embodiment. Parts similar to those in the pier structure 1 according to the first embodiment (including those that differ only in size) are denoted by the same reference numerals, and their descriptions are omitted. Figure 12 is a schematic front view showing the main parts of a pier structure equipped with a pier bracket mounting device according to the fifth embodiment. Figure 13 is a schematic plan view showing the main parts of a pier structure equipped with a pier bracket mounting device according to the fifth embodiment. 【0078】 As shown in Figures 12 and 13, in the fifth embodiment of the pier structure 1D, the pier 2 is longer in the direction perpendicular to the bridge axis than the pier structure 1, and accordingly, a pier bracket mounting device 3D, which is partially different from the pier bracket mounting device 3, is provided in place of the pier bracket mounting device 3. The pier bracket mounting device 3D is provided with a connecting member 30 between the component 11a and the component 11b, which connects the side portion 12a1 and the side portion 12b1. The connecting member 30 has a first member 31 that connects the upper part of the side portion 12a1 and the upper part of the side portion 12b1, a second member 32 that connects the lower part of the side portion 12a1 and the lower part of the side portion 12b1, a third member 33 that connects the upper part of the side portion 12a1 and the lower part of the side portion 12b1, and a fourth member 34 that connects the lower part of the side portion 12a1 and the upper part of the side portion 12b1. The third member 33 and the fourth member 34 intersect, and this intersection is connected. Therefore, the connecting member 30 forms multiple truss structures with the side sections 12a1 and 12b1. The pier bracket mounting device 3D is also provided with a similar connecting member 30 between the components 11c and 11d to connect the side sections 12c1 and 12d1. Note that the connecting member 30 connecting the side sections 12a1 and 12b1 is not limited to a truss structure, and various connection structures can be applied. That is, instead of connecting the side sections 12a1 and 12b1 with a single steel plate, they can be connected via another connecting member. In other words, it is not limited to a configuration in which the side sections 12a1 and 12b1 are composed of a single continuous member, but as shown in Figures 12 and 13, multiple side sections 12a1 and 12b1 may be connected by connecting members 30. 【0079】 In the pier structure 1D according to the fifth embodiment described above, the pier bracket mounting device 3D provides the same effects as the pier bracket mounting device 3 according to the first embodiment. Furthermore, even when the length of the pier 2 in the direction perpendicular to the pier is long, the pier structure 1D allows the size of each component 11a to 11d of the pier bracket mounting device 3D to be kept small, thereby suppressing a decrease in constructability. 【0080】 [Sixth Embodiment] The pier structure 1E according to the sixth embodiment will be described, mainly with reference to Figure 14, focusing on the parts that differ from the pier structure 1 according to the first embodiment. Parts that are the same as those of the pier structure 1 according to the first embodiment (including cases where only the size differs) are denoted by the same reference numerals, and their descriptions are omitted. Figure 14 is a schematic plan view showing the main parts of a pier structure equipped with a pier bracket mounting device according to the sixth embodiment. 【0081】 As shown in Figure 14, the pier structure 1E according to the sixth embodiment has a cylindrical pier 2E. The pier 2E comprises an upper surface 2Ea and a side surface 2Eb. The upper surface 2Ea is a horizontally extending planar surface located at the upper end of the pier 2E. The side surface 2Eb is the radially outer circumferential surface of the pier 2E and is a cylindrical surface extending vertically. 【0082】 Accordingly, the pier structure 1E is equipped with a pier bracket mounting device 3E, which is partially different from the pier bracket mounting device 3, in place of the pier bracket mounting device 3. The pier bracket mounting device 3E is equipped with multiple components 11Ea, 11Eb, 11Ec, and 11Ed in place of multiple components 11a to 11d. Specifically, the pier bracket mounting device 3E is equipped with four components 11Ea to 11Ed. Components 11Ea to 11Ed are the same shape. A support 5 is installed in the center of the upper surface 2Ea of the pier 2E, and components 11Ea to 11Ed are arranged in the order of components 11Ea, 11Eb, 11Ec, and 11Ed on the upper part of the pier 2E so as to surround it all around in the horizontal direction. 【0083】 The structure 11Ea comprises a side portion 12Ea and a vertical support portion 13Ea. The side portion 12Ea is plate-shaped and curved to match the radially outer outer surface of the pier 2E. The vertical support portion 13Ea is flat and has an arc shape in plan view. The radially outer edge of the vertical support portion 13e is connected to the upper edge of the side portion 12Ea so as to be perpendicular to each other. The vertical support portion 13Ea has an arc shape in plan view, with a fan-shaped notch 14Ea on the side opposite to the side portion 12Ea in the horizontal direction. The structure 11Ea is provided with an L-shaped cross-section due to the side portion 12Ea and the vertical support portion 13Ea. The side portion 12Ea and the vertical support portion 13Ea are made of, for example, steel plate, but may be made of a material other than steel plate. In this case, the component 11Ea is made of steel. 【0084】 Here, the connection structure between the side portion 12Ea and the vertical support portion 13Ea can be, for example, a welded connection structure or a fastening member connection structure, similar to the connection structure between the side portion 12a1 and the vertical support portion 13a. The above explanation of the connection structure also applies to components 11Eb to 11Ed. 【0085】 The structure 11Eb has a side portion 12Eb similar to the side portion 12Ea, and a vertical support portion 13Eb similar to the vertical support portion 13Ea, which has a notch 14Eb similar to the notch portion 14Ea. 【0086】 The structure 11Ec has a side portion 12Ec similar to the side portion 12Ea, and a vertical support portion 13Ec similar to the vertical support portion 13Ea, which has a notch 14Ec similar to the notch portion 14Ea. 【0087】 The structure 11Ed has a side portion 12Ed similar to the side portion 12Ea, and a vertical support portion 13Ed similar to the vertical support portion 13Ea, which has a notch 14Ed similar to the notch portion 14Ea. 【0088】 Therefore, the pier bracket mounting device 3E is provided with multiple side sections 12Ea to 12Ed. 【0089】 Component 11Ea is installed on pier 2E with its side portion 12Ea abutting against the side portion 2Eb of pier 2E and its vertical support portion 13Ea abutting against the upper surface 2Ea of pier 2E. Component 11Eb is installed on pier 2E with its side portion 12Eb abutting against the side portion 2Eb of pier 2E and its vertical support portion 13Eb abutting against the upper surface 2Ea of pier 2E. Component 11Ec is installed on pier 2E with its side portion 12Ec abutting against the side portion 2Eb of pier 2E and its vertical support portion 13Ec abutting against the upper surface 2Ea of pier 2E. Component 11Ed is installed on pier 2E with its side portion 12Ed abutting against the side portion 2Eb of pier 2E and its vertical support portion 13Ed abutting against the upper surface 2Ea of pier 2E. 【0090】 Then, the end edge of the side portion 12Ea of component 11Ea on the component 11Eb side and the end edge of the side portion 12Eb of component 11Eb on the component 11Ea side are abutted against each other and connected. This connection structure can be the same as, for example, the connection structure between component 11a and component 11b of the pier bracket mounting device 3 according to the first embodiment. When the side portion 12Ea and the side portion 12Eb are connected, the vertical support portion 13Ea and the vertical support portion 13Eb also come into contact with each other at their opposing end edges. 【0091】 Furthermore, the edge of the side portion 12Eb of component 11Eb on the component 11Ec side and the edge of the side portion 12Ec of component 11Ec on the component 11Eb side are butted together and connected. This connection structure is the same as the connection structure of component 11Ea and component 11Eb. When the side portion 12Eb and the side portion 12Ec are connected, the vertical support portion 13Eb and the vertical support portion 13Ec also come into contact with each other at their opposing edges. 【0092】 Furthermore, the edge of the side portion 12Ec of component 11Ec on the component 11Ed side and the edge of the side portion 12Ed of component 11Ed on the component 11Ec side are butted against each other and connected. This connection structure is the same as the connection structure of components 11Ea and 11Eb. When the side portion 12Ec and the side portion 12Ed are connected, the vertical support portion 13Ec and the vertical support portion 13Ed also come into contact with each other at their opposing edges. 【0093】 Furthermore, the edge of the side portion 12Ed of component 11Ed on the component 11Ea side and the edge of the side portion 12Ea of component 11Ea on the component 11Ed side are butted against each other and connected. This connection structure is the same as the connection structure of component 11Ea and component 11Eb. When the side portion 12Ed and the side portion 12Ea are connected, the vertical support portion 13Ed and the vertical support portion 13Ea also come into contact with each other at their opposing edges. 【0094】 Furthermore, the radial inner portions of the vertical support sections 13Ea to 13Ed, formed by the notches 14Ea to 14Ed, are circular in shape as a whole, and the support 5 is positioned inside this circle. Even when multiple structures other than the support 5 are installed on top of the pier 2E, the vertical support sections 13Ea to 13Ed can be installed while avoiding those structures. All of the vertical support sections 13Ea to 13Ed are configured to transmit vertical loads to the pier 2E by contacting the upper surface 2Ea of the pier 2E. 【0095】 The pier bracket mounting device 3E has multiple vertical support sections 13Ea to 13Ed, which are provided around the entire circumference of the upper surface 2Ea of the pier 2E. Additionally, the pier bracket mounting device 3E has side sections 12Ea to 12Ed, which are provided around the entire circumference of the upper side section 2Eb of the pier 2E. Therefore, the pier bracket mounting device 3E has a shape that completely surrounds the upper part of the pier 2E. The pier bracket mounting device 3E has side sections 12Ea and 12Ec on either side of the pier 2E. Furthermore, the pier bracket mounting device 3E has side sections 12Eb and 12Ed on either side of the pier 2E. The pier bracket mounting device 3E has side sections 12Ea and 12Eb connected, side section 12Eb and 12Ec connected, side section 12Ec and 12Ed connected, and side section 12Ed and 12Ea connected. 【0096】 A bracket 4E is attached to at least one of the side sections 12Ea to 12Ed of the pier bracket mounting device 3E. In this case, for example, one bracket 4E is attached to each of the side sections 12Ea to 12Ed. 【0097】 The bracket 4E has a contact plate portion 21E that abuts against the pier bracket mounting device 3E, which is curved to match the side portions 12Ea to 12Ed. Accordingly, the upper plate portion 22E and the lower plate portion (not shown) of the bracket 4E also have an arc shape where they connect to the contact plate portion 21E. The bracket 4E is connected and fixed to each of the side portions 12Ea to 12Ed, for example, by welding or using screw studs, similar to the pier structure 1 according to the first embodiment. 【0098】 A jack (not shown) is installed on the upper plate portion 22E of the bracket 4, which is attached to the upper part of the pier 2E via the pier bracket mounting device 3E, for example, when performing maintenance on the support 5 to lift the superstructure 6. 【0099】 In the pier structure 1E according to the sixth embodiment described above, the pier bracket mounting device 3E provides the same effects as the pier bracket mounting device 3 according to the first embodiment. Furthermore, the pier structure 1E allows the bracket 4E to be installed even if the pier 2E is cylindrical. 【0100】 [Seventh Embodiment] The pier structure 1F according to the seventh embodiment will be described, mainly with reference to Figure 15, focusing on the parts that differ from the pier structure 1 according to the first embodiment. Parts that are the same as those of the pier structure 1 according to the first embodiment (including cases where only the size differs) are denoted by the same reference numerals, and their descriptions are omitted. Figure 15 is a schematic plan view showing the main parts of a pier structure equipped with a pier bracket mounting device according to the seventh embodiment. 【0101】 As shown in Figure 15, the pier structure 1F according to the seventh embodiment has a polygonal prism-shaped pier 2F. For example, the pier 2F is hexagonal prism-shaped. The pier 2F comprises an upper surface 2Fa, a side surface 2Fb, a side surface 2Fc, a side surface 2Fd, a side surface 2Fe, a side surface 2Ff, and a side surface 2Fg. The upper surface 2Fa is a planar surface that extends horizontally at the upper end of the pier 2F. The side surface 2Fb is provided on one side in the direction of the bridge axis and is a planar surface that extends vertically and perpendicular to the direction of the bridge axis. The side surface 2Fc is provided on one side perpendicular to the direction of the bridge axis and is a planar surface that extends vertically and inclined with respect to the direction of the bridge axis. The side surface 2Fd is also provided on one side perpendicular to the direction of the bridge axis and is a planar surface that extends vertically and inclined with respect to the direction of the bridge axis. The side surface 2Fe is provided on the other side in the direction of the bridge axis and is a planar surface that extends vertically and perpendicular to the direction of the bridge axis. Side 2Ff is located on the other side perpendicular to the bridge axis and is a planar shape that extends vertically and inclined with respect to the bridge axis. Side 2Fg is similarly located on the other side perpendicular to the bridge axis and is a planar shape that extends vertically and inclined with respect to the bridge axis. Sides 2Fb, 2Fc, 2Fd, 2Fe, 2Ff, and 2Fg are arranged in this order around the pier 2F. On the pier 2F, side 2Fb and side 2Fe face opposite each other, side 2Fc and side 2Ff face opposite each other, and side 2Fd and side 2Fg face opposite each other. 【0102】 Accordingly, the pier structure 1F is equipped with a pier bracket mounting device 3F, which 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 equipped with components 11Fa, 11Fb, 11Fc, and 11Fd, instead of the multiple components 11a to 11d. Specifically, the pier bracket mounting device 3F is equipped with four components 11Fa to 11Fd. Components 11Fa and 11Fc are the same shape, and components 11Fb and 11Fd are the same shape. On the upper surface 2Fa of the pier 2F, a support 5 is installed in the center, and components 11Fa to 11Fd are arranged in the order of components 11Fa, 11Fb, 11Fc, and 11Fd on the upper part of the pier 2F so as to surround it all around in the horizontal direction. 【0103】 The structure 11Fa comprises a side portion 12Fa and a vertical support portion 13Fa. The side portion 12Fa is a rectangular flat plate. The vertical support portion 13Fa is a trapezoidal flat plate and is connected to the upper edge of the side portion 12Fa. The vertical support portion 13Fa extends perpendicularly to the side portion 12Fa. The structure 11Fa is arranged so that its cross-section is L-shaped due to the side portion 12Fa and the vertical support portion 13Fa. The side portion 12Fa and the vertical support portion 13Fa are made of, for example, steel plates, but may be made of materials other than steel plates. In this case, the structure 11Fa is made of steel. 【0104】 Here, the side portion 12Fa and the vertical support portion 13Fa can be connected by welding, fastening members, or bending, similar to the side portion 12a1 and the vertical support portion 13a. 【0105】 The structure 11Fb comprises a side portion 12Fb1, a side portion 12Fb2, and a vertical support portion 13Fb. Both side portions 12Fb1 and 12Fb2 are rectangular flat plates, and one end edge of side portion 12Fb2 is connected to one end edge of side portion 12Fb1 at an obtuse angle to each other. Side portions 12Fb1 and 12Fb2 are connected in a V-shape in plan view, forming an obtuse angle. The vertical support portion 13Fb is flat and is connected to the upper end edges of side portions 12Fb1 and 12Fb2. The vertical support portion 13Fa extends perpendicularly to both side portions 12Fb1 and 12Fb2. The vertical support portion 13Fb has a V-shape in plan view, with a triangular notch 14Fb on the side opposite to the horizontal side portions 12Fb1 and 12Fb2 in plan view. The component 11Fb is provided so as to have an L-shape in cross-section by the side portions 12Fb1 and the vertical support portion 13Fb, and so as to have an L-shape in cross-section by the side portions 12Fb2 and the vertical support portion 13Fb. The side portions 12Fb1, 12Fb2 and the vertical support portion 13Fb are made of, for example, steel plates, but may be made of materials other than steel plates. Here, the component 11Fb is made of steel. 【0106】 Here, the side sections 12Fb1 and 12Fb2 can be connected by welding, fastening members, or bending, similar to the side sections 12a1 and 12a2. Similarly, the side section 12Fb1 and the vertical support section 13Fb can be connected by welding, fastening members, or bending, similar to the side section 12a1 and the vertical support section 13a. Similarly, the side section 12Fb2 and the vertical support section 13Fb can also be connected by welding, fastening members, or bending, similar to the side section 12a1 and the vertical support section 13a. 【0107】 The component 11Fc has a side portion 12Fc similar to the side portion 12Fa and a vertical support portion 13Fc similar to the vertical support portion 13Fa. 【0108】 The structure 11Fd includes a side portion 12Fd1 similar to the side portion 12Fb1, a side portion 12Fd2 similar to the side portion 12Fb2, and a vertical support portion 13Fd similar to the vertical support portion 13Fb, which includes a notch 14Fd similar to the notch portion 14Fb. 【0109】 Therefore, the pier bracket mounting device 3F is provided with multiple side sections 12Fa, 12Fb1, 12Fb2, 12Fc, 12Fd1, and 12Fd2. 【0110】 The component 11Fa is installed on the pier 2F with its side portion 12Fa abutting against the side portion 2Fb of the pier 2F facing horizontally to one side in the bridge axis direction, and its vertical support portion 13Fa abutting against the upper surface 2Fa of the pier 2F facing vertically upward. The component 11Fb is installed on the pier 2F with its side portion 12Fb1 abutting against the side portion 2Fc of the pier 2F facing horizontally to one side in the direction perpendicular to the bridge axis, its side portion 12Fb2 abutting against the side portion 2Fd of the pier 2F facing horizontally to one side in the direction perpendicular to the bridge axis, and its vertical support portion 13Fb abutting against the upper surface 2Fa of the pier 2F facing vertically upward. The component 11Fc is installed on the pier 2F with its side portion 12Fc in contact with the side portion 2Fe of the pier 2F facing horizontally to the other side in the direction of the bridge axis, and its vertical support portion 13Fc in contact with the upper surface 2Fa of the pier 2F facing vertically upward. The component 11Fd is installed on the pier 2F with its side portion 12Fd1 in contact with the side portion 2Ff of the pier 2F facing horizontally to the other side in the direction perpendicular to the bridge axis, its side portion 12Fd2 in contact with the side portion 2Fg of the pier 2F facing horizontally to the other side in the direction perpendicular to the bridge axis, and its vertical support portion 13Fb in contact with the upper surface 2Fa of the pier 2F facing vertically upward. 【0111】 Then, the edge of the side portion 12Fa of component 11Fa on the component 11Fb side and the edge of the side portion 12Fb1 of component 11Fb on the component 11Fa side are abutted against each other and connected. This connection structure is the same as the connection structure of component 11a and component 11b. When the side portion 12Fa and the side portion 12Fb1 are connected, the vertical support portion 13Fa and the vertical support portion 13Fb also come into contact with each other at their opposing edges. 【0112】 Furthermore, the edge of the side portion 12Fb2 of component 11Fb on the component 11Fc side and the edge of the side portion 12Fc of component 11Fc on the component 11Fb side are butted together and connected. This connection structure is the same as the connection structure of components 11a and 11b. When the side portion 12Fb2 and the side portion 12Fc are connected, the vertical support portion 13Fb and the vertical support portion 13Fc also come into contact with each other at their opposing edges. 【0113】 Furthermore, the end edge of the side portion 12Fc of component 11Fc on the component 11Fd side and the end edge of the side portion 12Fd1 of component 11Fd on the component 11Fc side are butted together and connected. This connection structure is the same as the connection structure of components 11a and 11b. When the side portion 12Fc and the side portion 12Fd1 are connected, the vertical support portion 13Fc and the vertical support portion 13Fd also come into contact with each other at their opposing end edges. 【0114】 Furthermore, the edge of the side portion 12Fd2 of component 11Fd on the component 11Fa side and the edge of the side portion 12Fa of component 11Fa on the component 11Fd side are butted together and connected. This connection structure is the same as the connection structure of components 11a and 11b. When the side portion 12Fd2 and the side portion 12Fa are connected, the vertical support portion 13Fd and the vertical support portion 13Fa also come into contact with each other at their opposing edges. 【0115】 The vertical support sections 13Fa to 13Fd are provided so as to avoid the support 5 by the inner portion including the notches 14Fb and 14Fd. The inner portion of the vertical support sections 13Fa to 13Fd, including the notches 14Fb and 14Fd, is hexagonal in shape as a whole, and the support 5 is positioned inside it. Even when structures other than the support 5 are installed on top of the pier 2F, the vertical support sections 13Fa to 13Fd can be provided so as to avoid those structures by the inner portion including the notches 14Fb and 14Fd. All of the vertical support sections 13Fa to 13Fd are configured to transmit vertical loads to the pier 2F by contacting the upper surface 2Fa of the pier 2F. 【0116】 The pier bracket mounting device 3F has multiple vertical support sections 13Fa to 13Fd, which are provided around the entire circumference of the upper surface 2Fa of the pier 2. Furthermore, the pier bracket mounting device 3F has side sections 12Fa, 12Fb1, 12Fb2, 12Fc, 12Fd1, and 12Fd2, which are provided around the entire circumference of the upper side sections 2Fb to 2Fg of the pier 2. Therefore, the pier bracket mounting device 3F has a shape that completely surrounds the upper part of the pier 2F. The pier bracket mounting device 3F has side sections 12Fa and 12Fc on either side of the pier 2F. Also, the pier bracket mounting device 3F has side sections 12Fb1 and 12Fd1 on either side of the pier 2F. Furthermore, the pier bracket mounting device 3F has side sections 12Fb2 and 12Fd2 on either side of the pier 2F. The pier bracket mounting device 3F has side section 12Fa connected to side section 12Fb1, side section 12Fb1 connected to side section 12Fb2, side section 12Fb2 connected to side section 12Fc, side section 12Fc connected to side section 12Fd1, side section 12Fd1 connected to side section 12Fd2, and side section 12Fd2 connected to side section 12Fa. 【0117】 A bracket 4 is attached to at least one of the side sections 12Fa, 12Fb1, 12Fb2, 12Fc, 12Fd1, and 12Fd2 of the pier bracket mounting device 3F. Here, for example, one bracket 4 is attached to each of the side sections 12Fb1, 12Fb2, 12Fd1, and 12Fd2 that face perpendicular to the bridge axis. Therefore, two brackets 4 are attached to each of the components 11Fb and 11Fd. The brackets 4 are connected and fixed to each of the side sections 12Fb1, 12Fb2, 12Fd1, and 12Fd2, for example, by welding or using screw studs, similar to the pier structure 1 according to the first embodiment. 【0118】 A jack (not shown) is installed on the upper plate portion 22 of the bracket 4, which is 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 to lift the superstructure 6. 【0119】 In the pier structure 1F according to the seventh embodiment described above, the pier bracket mounting device 3F provides the same effect as the pier bracket mounting device 3 according to the first embodiment. Furthermore, the pier structure 1F allows the bracket 4 to be installed even if the pier 2F is polygonal columnar. 【0120】 Alternatively, the vertical support portion 13Fb of the component 11Fb may be divided in half lengthwise, and one of the divided vertical support portion 13Fb may be connected to the side portion 12Fb1 to form one component, and the other divided vertical support portion 13Fb may be connected to the side portion 12Fb2 to form another component. In that case, these components will have the same configuration as component 11Fa. The same applies to component 11Fd. 【0121】 [Eighth Embodiment] The pier structure 1G according to the eighth embodiment will be described, mainly with reference to Figure 16, focusing on the parts that differ from the pier structure 1 according to the first embodiment. Parts that are the same as those in the pier structure 1 according to the first embodiment (including cases where only the size differs) are denoted by the same reference numerals, and their descriptions are omitted. Figure 16 is a schematic plan view showing the main parts of a pier structure equipped with a pier bracket mounting device according to the eighth embodiment. 【0122】 As shown in Figure 16, the pier structure 1G according to the eighth embodiment has a columnar pier 2G whose cross-section in the horizontal plane is approximately oval-shaped. The pier 2G comprises 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 extends horizontally at the upper end of the pier 2G. The side surface 2Gb is provided on one side in the direction of the bridge axis and is a planar surface that extends vertically and perpendicular to the bridge axis. The side surface 2Gc is provided on one side perpendicular to the bridge axis and is a semi-cylindrical surface that extends vertically and is outwardly convex. The side surface 2Gd is provided on the other side in the direction of the bridge axis and is a planar surface that extends vertically and perpendicular to the bridge axis. The side surface 2Ge is provided on the other side perpendicular to the bridge axis and is a semi-cylindrical surface that extends vertically and is outwardly convex. Sides 2Gb, 2Gc, 2Gd, and 2Ge are arranged in this order around the pier 2G. On pier 2G, sides 2Gb and 2Gd face opposite directions, and sides 2Gc and 2Ge face opposite directions. 【0123】 Accordingly, the pier structure 1G is equipped with a pier bracket mounting device 3G, which is partially different from the pier bracket mounting device 3, in place of the pier bracket mounting device 3. The pier bracket mounting device 3G is equipped with components 11Ga to 11Gd in place of the multiple components 11a to 11d. Specifically, the pier bracket mounting device 3G is equipped with four components 11Ga to 11Gd. Components 11Ga and 11Gc have the same shape, and components 11Gb and Gd have the same shape. A support 5 is installed in the center of the upper surface 2Ga of the pier 2G, and components 11Ga to 11Gd are arranged on the upper part of the pier 2G in the order of components 11Ga, 11Gb, 11Gc, and 11Gd so as to surround it all around in the horizontal direction. 【0124】 The structure 11Ga comprises a side portion 12Ga and a vertical support portion 13Ga. The side portion 12Ga is a rectangular flat plate. The vertical support portion 13Ga is a rectangular flat plate and is connected to the upper edge of the side portion 12Ga. The vertical support portion 13Ga extends perpendicularly to the side portion 12Ga. The structure 11Ga is arranged so that the cross-section is L-shaped by the side portion 12Ga and the vertical support portion 13Ga. The side portion 12Ga and the vertical support portion 13Ga are made of, for example, steel plates, but may be made of materials other than steel plates. In this case, the structure 11Ga is made of steel. 【0125】 Here, the side portion 12Ga and the vertical support portion 13Ga can be connected by welding, fastening members, or bending, similar to the side portion 12a1 and the vertical support portion 13a. 【0126】 The structure 11Gb comprises a side portion 12Gb and a vertical support portion 13Gb. The side portion 12Gb is a semicircular curved plate. The vertical support portion 13Gb is a flat plate and is connected to the upper edge of the side portion 12Gb. The vertical support portion 13Gb extends perpendicularly to the side portion 12Gb. In plan view, the vertical support portion 13Gb has an arc shape with a fan-shaped notch 14Gb on the side opposite to the side portion 12Gb in the horizontal direction. The structure 11Gb is arranged so that the side portion 12Gb and the vertical support portion 13Gb form an L-shape in cross-section. The side portion 12Gb and the vertical support portion 13Gb of the structure 11Gb are made of, for example, steel plate, but they may be made of materials other than steel plate. Here, the structure 11Gb is made of steel. 【0127】 Here, the side portion 12Gb and the vertical support portion 13Gb can be connected by welding or by fastening members, for example, similar to the side portion 12a1 and the vertical support portion 13a. 【0128】 The component 11Gc has a side portion 12Gc similar to the side portion 12Ga, and a vertical support portion 13Gc similar to the vertical support portion 13Ga. 【0129】 The component 11Gd includes a side portion 12Gd similar to the side portion 12Gb, and a vertical support portion 13Gd similar to the vertical support portion 13Gb, which includes a notch 14Gd similar to the notch portion 14Gb. 【0130】 Therefore, the pier bracket mounting device 3G is provided with multiple side sections 12Ga, 12Gb, 12Gc, and 12Gd. 【0131】 The component 11Ga is installed on the pier 2G with its side portion 12Ga abutting against the side portion 2Gb facing horizontally to one side of the pier 2G in the direction of the bridge axis, and its vertical support portion 13Ga abutting against the upper surface 2Ga facing vertically upward. The component 11Gb is installed on the pier 2G with its side portion 12Gb abutting against the side portion 2Gc facing horizontally to one side of the pier 2G in the direction perpendicular to the bridge axis, and its vertical support portion 13Gb abutting against the upper surface 2Ga facing vertically upward. The component 11Gc is installed on the pier 2G with its side portion 12Gc abutting against the side portion 2Gd facing horizontally to the other side of the pier 2G in the direction of the bridge axis, and its vertical support portion 13Gc abutting against the upper surface 2Ga facing vertically upward. The structure 11Gd is installed on the pier 2G with its side portion 12Gd in contact with the side portion 2Ge of the pier 2G that faces horizontally to the other side perpendicular to the bridge axis, and its vertical support portion 13Gb in contact with the upper surface 2Ga of the pier 2G that faces vertically upward. 【0132】 Then, the edge of the side portion 12Ga of component 11Ga on the component 11Gb side and the edge of the side portion 12Gb of component 11Gb on the component 11Ga side are abutted against each other and connected. This connection structure is the same as the connection structure of component 11a and component 11b. When the side portion 12Ga and the side portion 12Gb are connected, the vertical support portion 13Ga and the vertical support portion 13Gb also come into contact with each other at their opposing edges. 【0133】 Furthermore, the edge of the side portion 12Gb of component 11Gb on the component 11Gc side and the edge of the side portion 12Gc of component 11Gc on the component 11Gb side are butted against each other and connected. This connection structure is the same as the connection structure of component 11a and component 11b. When the side portion 12Gb and the side portion 12Gc are connected, the vertical support portion 13Gb and the vertical support portion 13Gc also come into contact with each other at their opposing edges. 【0134】 Furthermore, the edge of the side portion 12Gc of component 11Gc on the component 11Gd side and the edge of the side portion 12Gd of component 11Gd on the component 11Gc side are butted together and connected. This connection structure is the same as the connection structure of components 11a and 11b. When the side portion 12Gc and the side portion 12Gd are connected, the vertical support portion 13Gc and the vertical support portion 13Gd also come into contact with each other at their opposing edges. 【0135】 Furthermore, the end edge of the side portion 12Gd of component 11Gd on the component 11Ga side and the end edge of the side portion 12Ga of component 11Ga on the component 11Gd side are butted together and connected. This connection structure is the same as the connection structure of components 11a and 11b. When the side portion 12Gd and the side portion 12Ga are connected, the vertical support portion 13Gd and the vertical support portion 13Ga also come into contact with each other at their opposing end edges. 【0136】 The vertical support sections 13Ga to 13Gd are provided so as to avoid the support 5 by their inner portions, which include the notches 14Gb and 14Gd. The inner portions of the vertical support sections 13Ga to 13Gd, which include the notches 14Gb and 14Gd, are generally elongated, and the support 5 is positioned inside them. Even when structures other than the support 5 are installed on top of the pier 2G, the vertical support sections 13Ga to 13Gd can be provided so as to avoid those structures by their inner portions, which include the notches 14Gb and 14Gd. All of the vertical support sections 13Ga to 13Gd are configured to transmit vertical loads to the pier 2G by contacting the upper surface 2Ga of the pier 2G. 【0137】 The pier bracket mounting device 3G has multiple vertical support sections 13Ga to 13Gd, which are provided around the entire circumference of the upper surface 2Ga of the pier 2G. Additionally, the pier bracket mounting device 3G has side sections 12Ga to 12Gd, which are provided around the entire circumference of the upper side sections 2Gb to 2Ge of the pier 2G. Therefore, the pier bracket mounting device 3G has a shape that completely surrounds the upper part of the pier 2G. The pier bracket mounting device 3G has side sections 12Ga and 12Gc on either side of the pier 2G. Furthermore, the pier bracket mounting device 3G has side sections 12Gb and 12Gd on either side of the pier 2G. The pier bracket mounting device 3G has side sections 12Ga and 12Gb connected, side section 12Gb and 12Gc connected, side section 12Gc and 12Gd connected, and side section 12Gd and 12Ga connected. 【0138】 A bracket 4 is attached to at least 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 that face in the direction of the bridge axis. Therefore, two brackets 4 are attached to each of the components 11Ga and 11Gc. The brackets 4 are connected and fixed to each of the side portions 12Ga and 12Gc, for example, by welding or using screw studs, similar to the pier structure 1 according to the first embodiment. 【0139】 A jack (not shown) is installed on the upper plate portion 22 of the bracket 4, which is attached to the upper part of the pier 2G via the pier bracket mounting device 3G, for example, when performing maintenance on the support 5 to lift the superstructure 6. 【0140】 In the pier structure 1G according to the eighth embodiment described above, the pier bracket mounting device 3G provides the same effects as the pier bracket mounting device 3 according to the first embodiment. Furthermore, the pier structure 1G allows the bracket 4 to be installed even if the pier 2G is a columnar shape with a horizontal cross-section of a cylindrical shape. 【0141】 The technical scope of this disclosure is not limited to the embodiments described above, and various modifications can be made without departing from the spirit of this disclosure. For example, the pier bracket mounting devices 3, 3E to 3G and pier structures 1, 1A to 1G of the first to eighth embodiments described above can be modified as shown in the following modifications 1 to 10. Modifications 1 to 10 will be explained using the case of modifying the pier bracket mounting device 3 and pier structure 1 of 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 pier structures 1A to 1G of the second to eighth embodiments. 【0142】 <Example 1> Figure 17 is a schematic front view showing the main parts of a pier structure equipped with a pier bracket mounting device according to Modification Example 1. As shown in Figure 17, the side portions 12a1 and 12b1 of the pier bracket mounting device 3, it is also possible to provide notches 51 or slits 52 in at least one unnecessary part of the side portions 12a1, 12a2, 12b1, 12b2, 12c1, 12c2, 12d1, and 12d2. This configuration allows for weight reduction of the pier bracket mounting device 3. 【0143】 <Modification 2> Figure 18 is a schematic plan view showing the main parts of a pier structure equipped with a pier bracket mounting device according to Modification Example 2. As shown in Figure 18, it is also possible to provide a notch 55 in at least one unnecessary part of the vertical support sections 13a to 13d. This configuration allows for a reduction in the weight of the pier bracket mounting device 3. 【0144】 <Variation 3> Figure 19 is a schematic cross-sectional view showing the main part of a pier structure equipped with a pier bracket mounting device according to Modification 3. As shown in Figure 19, 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 extending outward from the lower end on at least one of the side surfaces 12a1, 12a2, 12b1, 12b2, 12c1, 12c2, 12d1, and 12d2. Alternatively, as shown in Figure 19, the bracket 4 attached to the right-hand component 11d may be aligned with the top surfaces of components 11a to 11d. 【0145】 <Modification 4> Figure 20 is a schematic front view showing the main parts of a pier structure equipped with a pier bracket mounting device according to Modification 4. As shown in Figure 20, when the upper heights of the bridge piers 2 are different, it is also possible to arrange the components 11a, 11d and components 11b, 11c of the bridge pier bracket mounting device 3 at different heights to match this difference. 【0146】 <Modification 5> Figure 21 is a schematic plan view showing the main parts of a pier structure equipped with a pier bracket mounting device according to Modification 5. As shown in Figure 21, it is also possible to attach the bracket 4 to only one side of the pier bracket mounting device 3, for example, only the side sections 12a1 and 12b1, out of the side sections 12a1, 12a2, 12b1, 12c1, 12c2, 12d1, and 12d1. 【0147】 <Variation 6> Figure 22 is a schematic side view showing the main parts of a pier structure equipped with a pier bracket mounting device according to Modification 6. As shown in Figure 22, the bracket 4 attached to the pier bracket mounting device 3 of the pier structure 1 and the superstructure 6 may be connected by a cable 65 to prevent the superstructure 6 from collapsing. 【0148】 <Example 7> Figure 23 is a schematic cross-sectional view showing the main part of a pier structure equipped with a pier bracket mounting device according to Modification 7. As shown in Figure 23, the bracket 4 attached to the pier bracket mounting device 3 of the pier structure 1 may be extended upward, and a projection 6a may be made to protrude from the superstructure 6, so that the bracket 4 comes into contact with the projection 6a to prevent displacement of the superstructure 6. 【0149】 <Differentiation Example 8> Figure 24 is a schematic cross-sectional view showing the main part of the bridge pier in the modified example 8. The shape of the bridge pier 2 is not limited to the above, and this disclosure can also be applied to a portal-shaped bridge pier 2 as viewed in the bridge axis direction, for example, as shown in Figure 24. 【0150】 <Modification 9> Figure 25 is a schematic cross-sectional view showing the main part of the bridge pier of the modified example 9. This disclosure is also applicable to L-shaped bridge piers 2, as shown in Figure 25, for example. 【0151】 <Variation 10> Figure 26 is a schematic cross-sectional view showing the main part of the bridge pier of modified example 10. This disclosure is also applicable to a T-shaped bridge pier 2, as shown in Figure 26, for example. 【0152】 Furthermore, it is possible to replace the components in the above embodiments with well-known components as appropriate, without departing from the spirit of this disclosure. 【0153】 (Note) The pier bracket mounting device and pier structure according to the above embodiment can be understood, for example, as follows. 【0154】 (1) A pier bracket mounting device according to one aspect of the present disclosure comprises a side portion and a vertical support portion connected to the side portion, wherein the vertical support portion is configured to transmit a vertical load to the pier, and a plurality of side portions are provided, the plurality of side portions are connected, and a bracket is attached to any of the plurality of side portions. 【0155】 This pier bracket mounting device allows brackets to be attached to piers without drilling holes for anchor bolts. Therefore, it can mitigate problems such as reduced workability, decreased pier quality, increased construction costs, longer construction periods, and environmental concerns that can arise from drilling holes for anchor bolts. 【0156】 (2) The pier bracket mounting device described in (1) above may be configured such that the side portion and the vertical support portion form an L-shape in cross-section. 【0157】 With this configuration, the pier bracket mounting device can be securely attached to the pier. 【0158】 (3) In the pier bracket mounting device relating to (1) or (2) above, the vertical support portion may be configured to avoid a structure located on the upper part of the pier. 【0159】 With this configuration, the pier bracket mounting device can be securely attached to the pier while avoiding other structures. 【0160】 (4) In the pier bracket mounting device relating to any one of (1) to (3) above, the vertical support portion may be provided around the entire circumference of the upper part of the pier. 【0161】 With this configuration, the pier bracket mounting device can be securely attached to the pier. 【0162】 (5) In a pier bracket mounting device relating to any one of (1) to (4) above, the bracket may be attached to the side portion by a pier non-insertion means that is not inserted into the pier. 【0163】 This configuration eliminates the need to drill holes in the bridge piers, thus avoiding problems associated with drilling. 【0164】 (6) In the pier bracket mounting device relating to (5) above, the pier non-insertion means may be welded. 【0165】 This configuration eliminates the need to drill holes in the bridge piers, thus avoiding problems associated with drilling. 【0166】 (7) A pier structure according to one aspect of the present disclosure comprises the bracket and a pier bracket mounting device according to any one of (1) to (6) above. 【0167】 With this configuration, the bridge pier bracket mounting device will achieve the above-mentioned effect. [Explanation of Symbols] 【0168】 1,1A~1G Bridge Pier Structure 2,2E~2G Bridge piers 3,3A,3D~3G Bridge pier bracket mounting device 4,4E bracket 5 Support (structure) 12a1,12a2,12b1,12b2,12c1,12c2,12d1,12d2,12e~12h,12Ea~12Ed,12Fa,12Fb1,12Fb2,12Fc,12Fd1,12Fd2,12Ga~12Gd Side part 13a~13h, 13Ea~13Ed, 13Fa~13Fd, 13Ga~13Gd Vertical support section

Claims

[Claim 1] Side section and It comprises a vertical support portion connected to the aforementioned side portion, The aforementioned vertical support section is configured to transmit vertical loads to the bridge pier. Multiple side portions are provided, Multiple of the aforementioned side sections are connected, A bridge pier bracket mounting device to which a bracket is attached to one of the multiple side surfaces. [Claim 2] The bridge pier bracket mounting device according to claim 1, wherein the side portion and the vertical support portion are arranged to form an L-shaped cross-section. [Claim 3] The pier bracket mounting device according to claim 1, wherein the vertical support portion is provided to avoid a structure located on the upper part of the pier. [Claim 4] The pier bracket mounting device according to claim 3, wherein the vertical support portion is provided around the entire circumference of the upper part of the pier. [Claim 5] The pier bracket mounting device according to claim 1, wherein the bracket is attached to the side portion by a pier non-insertion means that is not inserted into the pier. [Claim 6] The bridge pier bracket mounting device according to claim 5, wherein the bridge pier non-insertion means is welded. [Claim 7] The aforementioned bracket and, A bridge pier structure comprising a bridge pier bracket mounting device according to any one of claims 1 to 6.

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