Frame for installing aseismatic reinforcement structure, device for installing aseismatic reinforcement structure, and method for installing aseismatic reinforcement structure

Abstract

To provide a frame for installing an aseismatic reinforcement structure, a device for installing the aseismatic reinforcement structure, and a method for installing the aseismatic reinforcement structure, which can reduce time and labor for installing the aseismatic reinforcement structure.SOLUTION: A frame 30 for installing an aseismatic reinforcement structure, which supports a horizontal force sharing structure 4 for limiting transverse displacement of an upper structure 1 with respect to a lower structure 2 when attaching the horizontal force sharing structure 4, comprises: a base 40 supported by a base machine 20; and a table 50 on which the horizontal force sharing structure 4 is placed. The table 50 is supported on the base 40 via a first transverse moving base 80 movable to the right and left with respect to the base 40, a second transverse moving base 90 movable to the front and back with respect to the base, and a ramp 60 liftable with respect to the base 40.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present invention relates to a gantry for installing a seismic reinforcement structure used when installing a seismic reinforcement structure, a seismic reinforcement structure installation device including a base machine and the gantry for installing the seismic reinforcement structure, and a method for installing a seismic reinforcement structure using the gantry for installing the seismic reinforcement structure.

Background Art

[0002] For the purpose of seismic reinforcement of existing bridges, there are cases where seismic reinforcement structures such as a horizontal force sharing structure for restricting the lateral displacement of the superstructure with respect to substructures such as bridge piers and abutments, and a fixing structure for fixing the superstructure to the substructure are added. As the horizontal force sharing structure, there is one including a stopper attached to the lower surface of the superstructure and a bracket attached to the side surface of the substructure, and the upper part is laterally movable within a predetermined range with respect to the lower part of the stopper.

[0003] As a method for installing a seismic reinforcement structure, it is common to fix the seismic reinforcement structure to the existing structure while suspending it by a chain block installed through a temporary anchor cast in the existing structure (superstructure or substructure). However, in the conventional construction method, it is necessary to operate a plurality of chain blocks to ensure horizontality and then perform the work, which is time-consuming. In addition, when fixing the seismic reinforcement structure suspended by the chain block to the side surface of the substructure, it is necessary to move it laterally by manpower, which is also time-consuming.

[0004] Therefore, Patent Document 1 discloses a construction method in which a horizontal sharing structure is moved in the vertical and horizontal directions and installed at a predetermined position of a bridge using a lifting device including a mounting portion that moves up and down by a lifting mechanism and a slide member that is laterally movable on the mounting portion.

[0005] In addition, Patent Document 2 discloses a pedestal for installing a horizontal force sharing structure that uses a base machine including a main body device having traveling means, a boom that can rotate in the lateral and vertical directions with respect to the main body device, and a lifting unit installed at the tip of the boom. The pedestal for installing the horizontal force sharing structure of Patent Document 2 has a base supported by the lifting unit and an upper plate slidably connected in the lateral direction with respect to the base. When installing the horizontal force sharing structure installation device, the pedestal for installing the horizontal force sharing structure on which the horizontal force sharing structure installation device is placed is arranged at a predetermined position by the base machine, and then the upper plate is laterally moved to bring it close to or into contact with the existing structure.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0007] The lifting device of Patent Document 1 raises the mounting portion while being installed below the upper structure, and the slide member can only move laterally on the mounting portion. Therefore, when fixing the bracket to the lower structure, the bracket cannot be projected outside the mounting portion and brought close to the side surface of the lower structure.

[0008] In addition, although the horizontal force sharing structure installation device of Patent Document 2 has the upper plate moving horizontally in one direction (for example, the front-rear direction with respect to the base machine), it does not have a mechanism for moving in the other direction (for example, the left-right direction) orthogonal to the said direction. Therefore, it is necessary to operate the base machine to move in multiple directions, and it may be time-consuming for fine adjustment.

[0009] An object of the present invention is to provide a gantry for installing a seismic reinforcement structure, a seismic reinforcement structure installation device, and a seismic reinforcement structure installation method that can reduce the labor required for installing the seismic reinforcement structure.

Means for Solving the Problems

[0010] In order to solve the above problems, the gantry for installing a seismic reinforcement structure of the present invention supports the seismic reinforcement structure when attaching the seismic reinforcement structure to a bridge. This gantry for installing a seismic reinforcement structure has a base supported by a base machine and a mounting table on which the seismic reinforcement structure is placed. The mounting table is supported by the base via a first lateral movement table that can move left and right with respect to the base, a second lateral movement table that can move back and forth with respect to the base, and a lifting table that can move up and down with respect to the base.

[0011] Further, the method for installing a seismic reinforcement structure of the present invention includes a stopper attachment step of attaching a stopper of the seismic reinforcement structure to the lower surface of the upper structure, a bracket attachment step of attaching a bracket of the seismic reinforcement structure to the side surface of the lower structure, and a connection step of connecting the stopper and the bracket. In the stopper attachment step, operations are performed including placing the gantry for installing the seismic reinforcement structure below the upper structure by the base machine with the stopper placed on the mounting table of the gantry for installing the seismic reinforcement structure, raising and lowering the lifting table to bring the stopper close to or into contact with the lower surface of the upper structure, and fixing the stopper to the lower surface of the upper structure. Also, in the bracket attachment step, operations are performed including placing the gantry for installing the seismic reinforcement structure laterally to the lower structure by the base machine with the bracket placed on the mounting table, moving at least one of the first lateral movement table and the second lateral movement table laterally to bring the bracket close to or into contact with the side surface of the lower structure, and fixing the bracket to the side surface of the lower structure.

[0012] According to the earthquake-resistant reinforcement structure installation stand and earthquake-resistant reinforcement structure installation method, the mounting base can be moved up and down, front and back, and left and right, making it easy to make fine adjustments when attaching the earthquake-resistant reinforcement structure (stoppers and brackets) to the main body. This reduces the effort required to install the earthquake-resistant reinforcement structure. Furthermore, if the mounting base can be rotated around a vertical axis, it is easy to make fine adjustments to the orientation of the earthquake-resistant reinforcement structure.

[0013] If the mounting platform is further supported on the base via a tilting platform that can tilt around a horizontal axis relative to the base, the tilt of the mounting platform can be corrected. Therefore, even if the base is tilted due to unevenness in the location where the base machine is installed, the tilting platform can absorb the tilt and ensure the horizontality of the mounting platform.

[0014] In addition, in an earthquake-resistant reinforcement structure installation device comprising a base machine and a platform for installing earthquake-resistant reinforcement structures, the base machine comprises a running body, a rotating body mounted on the running body so as to be rotatable around a vertical axis, a boom attached to the rotating body so as to be rotatable around a horizontal axis, and a support attachment connected to the tip of the boom and supporting the base, and when the support attachment is connected to the boom directly or via an arm so as to be rotatable around the horizontal axis, the tilting table may be made tiltable around an axis perpendicular to the horizontal axis.

[0015] Furthermore, if the support attachment has multiple claws extending forward relative to the boom, the underside of the base is formed with insertion sections that are gate-shaped or square-shaped when viewed from the front, into which the claws can be inserted. In this way, the seismic reinforcement structure installation platform can be moved by the base machine by inserting the claws of the support attachment into the insertion sections, without the need for a jig or the like. [Effects of the Invention]

[0016] According to the pedestal for installing the earthquake-resistant reinforcement structure, the device for installing the earthquake-resistant reinforcement structure, and the method for installing the earthquake-resistant reinforcement structure of the present invention, fine adjustment in the vertical, horizontal, and front-back directions is made possible by the pedestal for installing the earthquake-resistant reinforcement structure, and thus, it is possible to reduce the labor required for installing the earthquake-resistant reinforcement structure.

Brief Description of the Drawings

[0017]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Embodiments for Carrying Out the Invention

[0018] Embodiments of the present invention will be described in detail with appropriate reference to the drawings. Figures 1 and 2 show the horizontal force sharing structure (seismic reinforcement structure) 4. In this embodiment, as shown in FIG. 1, the case of attaching a seismic reinforcement structure to the upper structure 1 and the lower structure 2 will be described. The upper structure 1 of this embodiment is a bridge girder or the like (the upper part of the bridge), and the lower structure 12 is a bridge pier or abutment or the like (the lower part of the bridge). Further, in this embodiment, a horizontal force sharing structure 4 is attached as the seismic reinforcement structure.

[0019] As shown in FIG. 1, the upper structure 1 is supported by the lower structure 2 via the bearing 3. The horizontal force sharing structure 4 is a member that restricts the lateral displacement of the upper structure 1 with respect to the lower structure 2. By sharing the horizontal force generated in the upper structure 1 during an earthquake between the bearing 3 and the horizontal force sharing structure 4, the load on the bearing 3 can be reduced.

[0020] The horizontal force sharing structure 4 includes a stopper 5 attached to the lower surface 1a of the upper structure 1 and a bracket 6 attached to the side surface 2a of the lower structure 2 as constituent members. The lower surface of the stopper 5 and the upper surface of the bracket 6 are connected. The stopper 5 has an upper part 5a and a lower part 5b connected via a shaft part 5c, and the upper part 5a can move laterally within a predetermined range with respect to the lower part 5b. In the stopper 5, by attaching the upper part 5a to the lower surface 1a of the upper structure 1 and connecting the lower part 5b to the upper surface of the bracket 6, the lateral displacement of the upper structure 1 with respect to the lower structure 2 is restricted.

[0021] A plurality of anchor bolts 1b are provided on the lower surface 1a of the upper structure 1. The plurality of anchor bolts 1b protruding from the upper structure 1 are respectively inserted into a plurality of mounting holes formed in the upper part 5a, and nuts 1c are screwed onto the tip ends of the anchor bolts 1b. Further, a filler 7 such as grout is filled in the gap between the upper surface of the upper part 5a and the lower surface 1a of the upper structure 1. In this way, the upper part 5a of the stopper 5 is fixed to the lower surface 1a of the upper structure 1. Further, bolts 4a are respectively inserted into a plurality of mounting holes formed in the lower part 5b.

[0022] The bracket 6 is a box-shaped member. As shown in FIG. 3, a plurality of vertical ribs 6a are arranged inside at intervals in the horizontal direction. A plurality of bolts 4a protruding from the lower part 5b of the stopper 5 are respectively inserted into a plurality of mounting holes formed in the top plate 6b of the bracket 6. Nuts 4b are screwed onto the bolts 4a. In this way, the top plate 6b of the bracket 6 is fixed to the lower surface of the lower part 5b of the stopper 5.

[0023] In the bracket 6, the side plate 6c on the side of the lower structure 2 is arranged perpendicular to the top plate 6b. A plurality of anchor bolts 2b are provided on the side surface 2a of the lower structure 2. A plurality of anchor bolts 2b protruding from the side surface 2a of the lower structure 2 are respectively inserted into a plurality of mounting holes formed in the side plate 6c. Nuts 2c are screwed onto the anchor bolts 2b. In this way, the side plate 6c of the bracket 6 is fixed to the side surface 2a of the lower structure 2.

[0024] The horizontal force sharing structure 4 is fixed to the upper structure 1 and the lower structure 2 by using the seismic reinforcement structure installation device 10. FIG. 3 shows the seismic reinforcement structure installation device 10 of the present embodiment. The seismic reinforcement structure installation device 10 includes a base machine 20 and a mounting base 30 for the seismic reinforcement structure as shown in FIG. 3.

[0025] The base machine 20 is a so-called backhoe, which includes a traveling body 21, a slewing body 22 provided rotatably about a vertical axis on the traveling body 21, a boom 23 attached to the slewing body 22 so as to be rotatable about a horizontal axis, and a support attachment 24 connected to the tip of the boom 23 and supporting the base.

[0026] The support attachment 24 is directly attached to the boom 23 so as to be rotatable about a horizontal axis. The support attachment 24 is pivotally supported by the tip of the boom 23 via a horizontal axis and is also pivotally supported by the tip of an arm cylinder 26 attached to the boom 23 via a horizontal axis. By doing so, the support attachment 24 rotates up and down as the arm cylinder 26 expands and contracts.

[0027] Figure 4 shows a plan view of the support attachment 24 and the base 30 for installing the seismic reinforcement structure, and Figure 5 shows a side view of the support attachment 24 and the base 30 for installing the seismic reinforcement structure. As shown in Figures 4 and 5, the support attachment 24 has a plurality (two on the left and right in this embodiment) of claws 25, 25 (forks) extending forward (in the direction away from the boom 23) from the connection portion with the boom 23. The claw 25 is made of a steel material having a rectangular cross-section with a width (size in the left-right direction) larger than the height, and has a length larger than the front-rear length of the base 30 for installing the seismic reinforcement structure. Further, the tip of the claw 25 has a trapezoidal shape with the width decreasing towards the tip.

[0028] As shown in Figure 5, the base 30 for installing the seismic reinforcement structure has a base portion 40 supported by the support attachment 24 of the base machine 20 and a mounting table 50 on which the horizontal force sharing structure 4 is mounted. Figure 6 is a rear view showing the base 30 for installing the seismic reinforcement structure. As shown in Figures 5 and 6, the base portion 40 includes a support frame 41 supported by the support attachment 24 and a base body 42 fixed to the upper surface of the support frame 41.

[0029] The support frame 41 is composed of a pair of left and right insertion parts 43, 43 and a connecting member 44 that connects the left and right insertion parts 43, 43. The insertion parts 43, 43 are made of angle steel pipes having an inner space into which the claws 25, 25 can be inserted, and extend from the rear end to the front end of the support frame 41. The distance between the central axes of the insertion parts 43 is equal to the distance between the central axes of the claws 25, and by sliding the support attachment 24 from the rear of the support frame 41, the claws 25 can be inserted into the insertion parts 43. Further, the length of the insertion part 43 is less than or equal to the length of the claw 25, and when the claw 25 is inserted into the insertion part 43, the claw 25 can be inserted over the entire length of the insertion part 43. The connecting member 44 is made of an angle steel pipe having the same cross-sectional shape as the insertion part 43, and is horizontally mounted on the left and right insertion parts 43, 43 at the longitudinal middle part of the insertion part 43. The material constituting the support frame 41 is not limited, and for example, it may be a channel steel. Also, the insertion part 43 and the connecting member 44 may be made of different materials. As shown in FIG. 4, the claws 25 of the support attachment 24 are inserted into the insertion part 43 from the rear end. In this way, the base 40 of the base 30 for installing the seismic reinforcement structure is supported by the support attachment 24 of the base machine 20.

[0030] The base body 42 is a plate-like member having a rectangular shape in plan view fixed to the upper surface of the support frame 41. Columns 45 are erected at the four corners of the base body 42. The columns 45 are erected perpendicular to the base body 42. The columns 45 are columnar members made of steel pipes, steel bars, etc. Also, as shown in FIG. 6, a cylinder receiver 46 for attaching the upper and lower cylinders 31 is formed at the center of the upper surface of the base body 42. Note that the base body 42 may be formed of a plate material, or may be a frame body formed by combining steel materials. Also, the number of the columns 45 is not limited as long as it is 3 or more.

[0031] As shown in FIGS. 5 and 6, the mounting table 50 is a pedestal disposed above the base 40. The mounting table 50 can mount the constituent members (the stopper 5 and the bracket 6) of the horizontal force sharing structure 4. The mounting table 50 is supported by the base 40 via a lift table 60, a tilting table 70, a first lateral movement table 80, and a second lateral movement table 90.

[0032] The lifting platform 60 is a pedestal that can be lifted relative to the base 40. The lifting platform 60 has a rectangular shape in plan view. The lifting platform 60 may be a plate-shaped member or a frame formed by combining steel materials. As shown in FIGS. 5 and 6, at the four corners of the lifting platform 60, there are provided support column receivers 61 into which the support columns 45 erected at the four corners of the base body 42 can be inserted. The support column receivers 61 are made of pipe materials into which the support columns 45 can be inserted, and are provided so as to protrude downward from the lifting platform 60. The lifting platform 60 is disposed above the base 40 with the support columns 45 inserted into the support column receivers 61.

[0033] As shown in FIG. 6, at the center of the lower surface of the lifting platform 60, a cylinder receiver 62 for attaching the vertical cylinder 31 is formed. The upper end of the vertical cylinder 31 is attached to the cylinder receiver 62 of the lifting platform 60, and the lower end of the vertical cylinder 31 is attached to the cylinder receiver 46 of the base 40. By expanding and contracting the vertical cylinder 31, the lifting platform 60 moves up and down relative to the base 40. When the lifting platform 60 moves up and down, it moves up and down along the support column 45 with the support column receiver 61 as a guide, so that the rotation and inclination of the lifting platform 60 are suppressed.

[0034] Also, a plurality of bearings 63 are formed at the left end of the lifting platform 60, and an angle adjustment cylinder 32 is provided at the center of the right edge of the lifting platform 60. In the present embodiment, the bearings 63 are respectively formed at the front end and the rear end of the left edge of the lifting platform 60. Note that the formation position of the bearings 63 is not limited to the left edge, and may be formed at the right edge. When the bearings 63 are formed at the right edge, the angle adjustment cylinder 32 shall be provided at the left edge.

[0035] As shown in FIGS. 5 and 6, the tilting table 70 of the present embodiment is mounted on the lifting table 60. The tilting table 70 may be a plate-like member or a frame formed by combining steel materials. On the lower surface of the tilting table 70, a bearing 71 is formed at a position corresponding to the bearing 63 of the lifting table 60, and an angle cylinder receiver 72 is formed corresponding to the position of the angle adjustment cylinder 32. Further, on the central portion of the left edge of the upper surface of the tilting table 70, a left-right cylinder receiver 73 for attaching one end of the left-right slide cylinder 33 is formed.

[0036] The bearing 63 of the lifting table 60 and the bearing 71 of the tilting table 70 are connected via a horizontal axis. That is, the tilting table 70 is pivotally supported on the lifting table 60 so as to be rotatable about the horizontal axis.

[0037] The upper end portion of the angle adjustment cylinder 32 is pivotally supported by the angle cylinder receiver 72. The angle adjustment cylinder 32 is provided so as to be extendable and retractable in the vertical direction. By the extension and retraction of the angle adjustment cylinder 32, the tilting table 70 tilts about the horizontal axis with respect to the base 40. That is, the tilting table 70 can tilt in a direction (a tilting direction centered on a horizontal axis extending in the front-rear direction) orthogonal to the tilting direction of the boom 23 and the support attachment 24 (a tilting direction centered on a horizontal axis extending in the left-right direction). That is, the tilting table 70 of the present embodiment can tilt in the left-right direction.

[0038] As shown in FIGS. 5 and 6, the first lateral movement table 80 is disposed above the tilting table 70 with a space therebetween. The first lateral movement table 80 may be a plate-like member or a frame formed by combining steel materials. On the lower surface of the first lateral movement table 80, moving means 81 for traveling or sliding on the upper surface of the tilting table 70 is provided. In the present embodiment, the moving means 81 is provided at two left and right positions at the front and rear ends of the first lateral movement table 80, respectively. The moving means 81 of the present embodiment is composed of a cam follower. Note that the configuration of the moving means 81 is not limited, and for example, traveling means such as rollers or wheels may be used, or sliding means provided with low friction or the like at the contact portion with the tilting table 70 may be used.

[0039] At the center of the lower surface of the first lateral moving table 80, left and right cylinder receivers 82 for attaching the other ends of the left and right slide cylinders 33 are formed. At the center of the rear edge portion of the upper surface of the first lateral moving table 80, front and rear cylinder receivers 83 for attaching one end of the front and rear slide cylinders 34 are formed. The first lateral moving table 80 moves left and right with respect to the base 40 by the expansion and contraction of the left and right slide cylinders 33 that connect the left and right cylinder receivers 73 of the tilting table 70 and the left and right cylinder receivers 82 of the first lateral moving table 80. The tilting table 70 is provided with regulating means (for example, stoppers, etc.) for regulating the traveling range of the moving means 81, and the moving distance and play of the moving means 81 during the lateral movement of the first lateral moving table 80 are controlled.

[0040] As shown in FIGS. 5 and 6, the second lateral moving table 90 is disposed above the first lateral moving table 80 with a space therebetween. The second lateral moving table 90 may be a plate-like member or a frame formed by combining steel materials. On the lower surface of the second lateral moving table 90, moving means 91 for traveling or sliding on the upper surface of the first lateral moving table 80 is provided. In the present embodiment, the moving means 91 is provided at two locations in the front and rear of the left and right edges of the second lateral moving table 90, respectively. Note that the configuration of the moving means 91 is not limited, but in the present embodiment, a cam follower is used.

[0041] At the center of the lower surface of the second lateral moving table 90, front and rear cylinder receivers 92 for attaching the other ends of the front and rear slide cylinders 34 are formed. The second lateral moving table 90 moves forward and backward with respect to the base 40 by the expansion and contraction of the front and rear slide cylinders 34 that connect the front and rear cylinder receivers 83 of the first lateral moving table 80 and the front and rear cylinder receivers 92 of the second lateral moving table 90. The first lateral moving table 80 is provided with regulating means for regulating the traveling range of the moving means 91, and the moving distance and play of the moving means 91 during the lateral movement of the second lateral moving table 90 are controlled.

[0042] On the left and right edge portions of the upper surface of the second lateral moving table 90, bolt receivers 93 are respectively formed. On the upper surface of the second lateral moving table 90, a bearing receiver 94 is formed at the center, and a plurality of support bases 95 are formed around the bearing receiver 94.

[0043] As shown in FIGS. 5 and 6, the mounting table 50 is a plate-like member disposed in parallel at an interval above the second lateral moving table 90. FIG. 7 shows a plan view of the mounting table 50. As shown in FIG. 7, the mounting table 50 includes a frame body 51 and a mounting plate 52 that covers the upper surface of the frame body 51. As shown in FIGS. 5 and 6, the mounting table 50 is mounted on the second lateral moving table 90 via a rotary bearing 53 disposed at the center of the mounting plate 52. The rotary bearing 53 is supported by the bearing receiver 94 of the second lateral moving table 90. Further, as shown in FIG. 7, arc-shaped long holes 54 are formed at the front and rear portions of the mounting table 50. A rotary lock bolt 55 can be inserted into the long hole 54. The rotary lock bolt 55 is inserted through the long hole 54 and screwed into the bolt receiver 93. The mounting plate 52 can rotate about the vertical axis by the rotary bearing 53. By tightening the rotary lock bolt 55, the rotation of the mounting plate 52 is fixed. The mounting table 50 is provided with reinforcing steel members 56 extending diagonally from the corner portions toward the center portion.

[0044] It should be noted that the vertical cylinder 31, the angle adjustment cylinder 32, the left and right slide cylinders 33, and the front and rear slide cylinders 34 can be driven by a hydraulic mechanism or an electric mechanism. In this embodiment, the hydraulic mechanism provided on the base 30 for installing the earthquake-resistant reinforcement structure is connected to the hydraulic mechanism of the base machine 20, and is configured to be able to control the vertical cylinder 31, the angle adjustment cylinder 32, the left and right slide cylinders 33, and the front and rear slide cylinders 34 by remote operation.

[0045] Next, the method for installing the seismic reinforcement structure of this embodiment will be described. The method for installing the seismic reinforcement structure includes a stopper attachment step of attaching a stopper 5 of the horizontal force sharing structure 4 to the lower surface 1a of the upper structure 1, a bracket attachment step of attaching a bracket 6 of the horizontal force sharing structure 4 to the side surface 2a of the lower structure 2, and a connection step of connecting the stopper 5 and the bracket 6.

[0046] In the stopper attachment step, first, as shown in FIG. 8, the stopper 5 is placed on the upper surface of the mounting table 50 of the mounting base 30 for installing the seismic reinforcement structure placed on the ground. FIG. 8 is a side view showing a state where the mounting base 30 for installing the seismic reinforcement structure is placed on the ground. The claw 25 of the support attachment 24 attached to the boom 23 of the base machine 20 may be inserted into the insertion portion 43 of the base portion 40 in advance, or may be inserted into the insertion portion 43 after placing the stopper 5 on the mounting table 50.

[0047] Subsequently, as shown in FIG. 9, the boom 23 of the base machine 20 is operated to raise the mounting base 30 for installing the seismic reinforcement structure on which the stopper 5 is placed, and it is arranged near the attachment position on the lower surface of the upper structure 1 (near the anchor bolt 1b protruding from the lower surface 1a of the upper structure 1). FIG. 9 is a side view showing a situation where the component members of the horizontal force sharing structure 4 are arranged near the attachment position.

[0048] When the stopper 5 is arranged near the attachment position on the lower surface 1a of the upper structure 1, as shown in FIGS. 10(a) and 10(b), the lifting platform 60 is raised to bring the stopper 5 close to or into contact with the lower surface of the upper structure 1. FIG. 10 is a diagram showing the attachment situation of the stopper 5. At this time, each anchor bolt 1b protruding from the lower surface 1a of the upper structure 1 is inserted into each mounting hole in the upper part 5a of the stopper 5. If there is a horizontal deviation between the mounting hole of the stopper 5 and the anchor bolt 1b, the position of the mounting table 50 in the front-rear, left-right directions is adjusted via the first lateral movement table 80 and the second lateral movement table 90, or the position adjustment is performed by rotating the mounting table 50 by the rotary bearing 53. Also, when the mounting table 50 is inclined, the inclination of the mounting table 50 is adjusted by the tilting table 70 and the boom 23. After the upper surface of the tilting table 70 becomes horizontal, the mounting table 50 is moved in the front-rear, left-right directions by the first lateral movement table 80 and the second lateral movement table 90, and the mounting table 50 is rotated around the vertical axis to adjust the position of the stopper 5. In this way, while finely adjusting the position and inclination of the mounting table 50 (stopper 5), the anchor bolt 1b is inserted into the mounting hole in the upper part 5a of the stopper 5. In this state, a nut 1c is screwed onto the anchor bolt 1b, and the stopper 5 is brought into close contact with the lower surface 1a of the upper structure 1 and temporarily fixed.

[0049] Note that the operator checks the positional relationship between the stopper 110 and the upper structure 1 from a high position using an aerial work platform, and remotely operates each part of the gantry 30 for installing the seismic reinforcement structure to attach the stopper 110 to the lower surface 1a of the upper structure 1.

[0050] Also, in the present embodiment, a resin cylindrical guide cap 1d is put on the tip (lower end) of the anchor bolt 1b protruding from the lower surface 1a of the upper structure 1. The lower end of the guide cap 1d has a reduced diameter. By doing so, the tip of the anchor bolt 1b can be smoothly inserted into the mounting hole of the stopper 110, and damage to the anchor bolt 1b and the stopper 110 can be prevented.

[0051] In the bracket mounting process, first, the pedestal 30 for installing the seismic reinforcement structure is lowered to the ground, and the bracket 6 is placed on the mounting table 50 (see Fig. 8). At this time, if necessary, an anti-tip member (diagonal member) 57 is installed from the back surface of the bracket 6 to the upper surface of the mounting table 50 (see Fig. 11). Figs. 11 and 12 show the bracket mounting process.

[0052] Subsequently, the base machine 20 is operated to place the pedestal 30 for installing the seismic reinforcement structure beside the lower structure 2 as shown in Fig. 11, and the bracket 6 is placed near the mounting position on the side surface 2a of the lower structure 2 (near the anchor bolt 2b protruding from the side surface 2a of the lower structure 2).

[0053] After the bracket 6 is placed near the mounting position of the lower structure 2, if necessary, the tilting table 70 and the boom 23 are operated to level the mounting table 50 (bracket 6), and the first transverse movement table 80 is operated to adjust the lateral displacement. Also, the orientation of the bracket 6 is adjusted by rotating the mounting table 50 via the rotary bearing 53.

[0054] Next, as shown in Fig. 12, the second transverse movement table 90 is laterally moved to slide the mounting table 50 (bracket 6) forward, and each anchor bolt 2b protruding from the side surface 2a of the lower structure 2 is inserted into each mounting hole of the bracket 6, and the bracket 6 is brought close to or into contact with the side surface 2a of the lower structure 2. The front edge portions of the second transverse movement table 90 and the mounting table 50 can project further forward than the front edge portions of the base 40, the lifting table 60, the tilting table 70, and the first transverse movement table 80. Therefore, even if there is a gap between the side surface 2a of the lower structure 2 and the base 40, etc., the bracket 6 can be brought into contact with the side surface 2a of the lower structure 2. Then, with the side surface of the bracket 6 overlapping the side surface 2a of the lower structure 2, a nut 2c is screwed onto the anchor bolt 2b to fix the bracket 6 to the side surface 2a of the lower structure 2.

[0055] In the connecting step, the stopper 5 and the bracket 6 are connected. After fixing the bracket 6 to the side surface 2a of the lower structure 2, loosen each nut 1c of each anchor bolt 1b that connects the stopper 5 and the upper structure 1, and lower the stopper 5. Then, overlap the lower part 5b of the stopper 5 on the top plate 6b of the bracket 6. Thereafter, insert bolts 4a through the mounting holes in the lower part 5b and the mounting holes in the top plate 6b, respectively, and thread nuts 4b onto the bolts 4a to connect the stopper 5 and the bracket 6. Further, fill the gap between the upper surface of the upper part 5a of the stopper 5 and the lower surface 1a of the upper structure 1 with a filler 7 to fix the stopper 5 to the lower surface 1a of the upper structure 1 (see FIG. 1).

[0056] According to the pedestal 30 for installing the seismic reinforcement structure, the seismic reinforcement structure installation device 10, and the method for installing the seismic reinforcement structure as described above, when installing the component members of the horizontal force sharing structure 4 on the upper structure 1 and the lower structure 2, it is not necessary to suspend the stopper 110 and the bracket 150 from the upper structure 1. That is, since the operation of installing a lifting tool such as a chain block on the lower surface 1a of the upper structure 1 can be omitted, the safety of the operation can be enhanced and the operation period can be shortened.

[0057] Even if a general-purpose backhoe is applied as the base machine 20, the horizontal force sharing structure 4 can be efficiently installed while ensuring a predetermined accuracy, so that special construction machinery is not required and it is economical. In addition, the pedestal 30 for installing the seismic reinforcement structure can be used without being limited to the type and size of the backhoe, and has high versatility.

[0058] In addition, since the arm of the base machine 20 is removed, the rated load can be increased. Furthermore, even when the base machine 20 does not have a level adjustment mechanism such as an outrigger, the horizontality can be ensured by the tilting table 70, so that the level can be adjusted even in an uneven environment where the base machine 20 is installed.

[0059] In the pedestal 30 for installing the earthquake-resistant reinforcement structure of the present embodiment, since the vertical, horizontal, front, rear, left, and right position adjustment of the mounting table 50, the fine adjustment of the inclination, and the fine adjustment of the orientation of the members mounted on the mounting table 50 are possible, the constituent members of the horizontal force sharing structure 4 can be smoothly arranged, and thus the work efficiency can be improved.

[0060] In the pedestal 30 for installing the earthquake-resistant reinforcement structure of the present embodiment, the stopper 5 can be raised by the lifting table 60. Therefore, even when the support attachment 24 of the base machine 20 cannot be brought close to the lower surface 1a of the upper structure 1, the stopper 5 can be attached to the lower surface 1a of the upper structure 1.

[0061] In the earthquake-resistant reinforcement structure installation device 10 of the present embodiment, the pedestal 30 for installing the earthquake-resistant reinforcement structure can be easily connected to the support attachment 24 of the base machine 20 by inserting the claw 25 of the support attachment 24 into the connection hole of the pedestal 30 for installing the earthquake-resistant reinforcement structure.

[0062] As described above, the embodiments of the present invention have been described. However, the present invention is not limited to the above-described embodiments, and each of the above-described constituent elements can be appropriately changed without departing from the gist of the present invention. In the present embodiment, as shown in FIG. 1, the case where the support attachment 24 is connected to the boom 23 of the base machine 20 has been described. However, the support attachment 24 may be connected to the boom 23 via an arm.

[0063] Further, as a reference example of the present invention, the configuration for connecting the support attachment 24 of the base machine 20 and the pedestal 30 for installing the earthquake-resistant reinforcement structure is not limited, and the support attachment 24 and the pedestal 30 for installing the earthquake-resistant reinforcement structure may be connected by fixing means such as bolts.

[0064] The arrangement (in the vertical order) of the lifting platform 60, tilting platform 70, first lateral movement platform 80, and second lateral movement platform 90 is not limited. For example, in the earthquake-resistant reinforcement structure installation device 10 of the present embodiment, the tilting platform 70 is disposed above the lifting platform 60, but the lifting platform 60 may be disposed above the tilting platform 70. Also, the first lateral movement platform 80 may be disposed on the second lateral movement platform 90.

[0065] Further, in the pedestal 30 for installing the earthquake-resistant reinforcement structure of the present embodiment, a tilting platform 70 that can tilt in the left-right direction is disposed, but in addition to the tilting platform 70, a second tilting platform that can tilt in the front-rear direction may be provided.

[0066] In the above embodiment, the case where the lifting and lowering of the lifting platform 60, the tilting of the tilting platform 70, and the lateral movement of the first lateral movement platform 80 and the second lateral movement platform 90 are performed by the up-down cylinder 31, angle adjustment cylinder 32, left-right slide cylinder 33, and front-rear slide cylinder 34 (such as a jack) that operate by hydraulic pressure has been described. However, the moving means of the lifting platform 60, tilting platform 70, first lateral movement platform 80, and second lateral movement platform 90 are not limited. For example, a mechanism that moves by a motor, screw, or the like may be used. The power form of each cylinder may be a structure that operates by manual force or a structure that operates mechanically.

[0067] The movement of the first lateral movement platform 80 and the second lateral movement platform 90 may be performed by rails and wheels that run on the rails. The arrangement and number of the up-down cylinder 31, angle adjustment cylinder 32, left-right slide cylinder 33, and front-rear slide cylinder 34 are not limited. In the above embodiment, the case where the earthquake-resistant reinforcement structure is the horizontal force sharing structure 4 has been described. However, the earthquake-resistant reinforcement structure is not limited to the horizontal force sharing structure 4, and for example, it may be a fixing structure.

Explanation of Reference Numerals

[0068] 1 Superstructure 1a Lower surface 2 Substructure 2a Side surface 3 Supports 4 Horizontal Force Sharing Structure (Seismic Reinforcement Structure) 5 Stopper 6 Bracket 10 Seismic Reinforcement Structure Installation Device 20 Base Machine 21 Traveling Body 22 Slewing Body 23 Boom 24 Support Attachment 25 Claw 30 Base for Installing Seismic Reinforcement Structure 40 Base 41 Support Frame 42 Base Body 43 Insertion Part 50 Mounting Table 53 Rotary Bearing 60 Lifting Table 70 Tilting Table 80 First Transverse Movement Table 90 Second Transverse Movement Table

Claims

1. A gantry for installing a seismic reinforcement structure for supporting the seismic reinforcement structure when attaching the seismic reinforcement structure to a bridge, comprising: a base supported by a base machine; a mounting table on which the seismic reinforcement structure is placed, and having: the mounting table is: a first lateral movement table that can move left and right with respect to the base; a second lateral movement table that can move back and forth with respect to the base; a lifting table that can move up and down with respect to the base, and is supported by the base via the lifting table, characterized in that it is a gantry for installing a seismic reinforcement structure.

2. The gantry for installing a seismic reinforcement structure according to claim 1, characterized in that the mounting table is further supported by the base via a tilting table that can tilt about a horizontal axis with respect to the base.

3. The gantry for installing a seismic reinforcement structure according to claim 1, characterized in that the mounting table can rotate about a vertical axis.

4. A seismic reinforcement structure installation device comprising a base machine and the gantry for installing a seismic reinforcement structure according to claim 2, the base machine comprising a traveling body, a slewing body rotatably provided on the traveling body about a vertical axis, a boom rotatably attached to the slewing body about a horizontal axis, and a support attachment connected to the tip of the boom and supporting the base, the support attachment being rotatably connected to the boom about a horizontal axis directly or via an arm, the tilting table being tiltable about an axis perpendicular to the horizontal axis, characterized in that it is a seismic reinforcement structure installation device.

5. The support attachment has a plurality of claws extending forward with respect to the boom, and on the lower surface of the base, a front view portal-shaped or square-shaped insertion portion into which the claws can be inserted is formed, characterized in that it is a seismic reinforcement structure installation device according to claim 4.

6. A method for installing a seismic reinforcement structure for attaching a seismic reinforcement structure for restricting lateral displacement of an upper structure with respect to a lower structure, comprising: a stopper attachment step of attaching a stopper of the seismic reinforcement structure to the lower surface of the upper structure; a bracket attachment step of attaching a bracket of the seismic reinforcement structure to the side surface of the lower structure; a connection step of connecting the stopper and the bracket, and in the stopper attachment step, ​ With the stopper placed on the mounting table of the pedestal for installing the earthquake-resistant reinforcement structure according to any one of claims 1 to 3, the operation of arranging the pedestal for installing the earthquake-resistant reinforcement structure below the upper structure by the base machine, the operation of raising and lowering the lifting table to bring the stopper close to or into contact with the lower surface of the upper structure, the operation of fixing the stopper to the lower surface of the upper structure, are performed, In the bracket mounting step, with the bracket placed on the mounting table, the operation of arranging the pedestal for installing the earthquake-resistant reinforcement structure beside the lower structure by the base machine, the operation of moving at least one of the first lateral movement table and the second lateral movement table laterally to bring the bracket close to or into contact with the side surface of the lower structure, the operation of fixing the bracket to the side surface of the lower structure, are performed. A method for installing an earthquake-resistant reinforcement structure, characterized by this.

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