CN214656283U

CN214656283U - Anti-seismic device for highway bridge

Info

Publication number: CN214656283U
Application number: CN202022892066.XU
Authority: CN
Inventors: 仇丽娜; 董天伦
Original assignee: Xi'an Jiaxuan Traffic Engineering Co ltd
Current assignee: Xi'an Jiaxuan Traffic Engineering Co ltd
Priority date: 2020-12-04
Filing date: 2020-12-04
Publication date: 2021-11-09
Anticipated expiration: 2030-12-04

Abstract

The utility model discloses an anti-seismic device for public road bridge roof beam, pier including the pontic and two symmetry settings, the last surface mounting of pier has the fixed block, a supporting beam is installed to the bottom side of pontic, support pressure spring and bearing plate fixed connection, the spout has been seted up to the lateral wall of pier. The utility model discloses simple structure, support pressure spring and pressure release spring through setting up, when the pontic receives violent vibrations, at first a supporting beam downstream, a supporting beam downstream drives the bearing plate downstream, support the pressure spring compressed, montant B downstream simultaneously, montant B downstream drives clamp plate A downstream, clamp plate A downstream drives connecting rod B downstream, connecting rod B downstream drives clamp plate B downstream, clamp plate B downstream then begins to extrude pressure release spring, pressure release spring is compressed, the pontic is cushioned, and clamp plate A presses the rubber pad, the rubber pad takes place deformation, the shock attenuation of more nearly one step to the pontic.

Description

Anti-seismic device for highway bridge

Technical Field

The utility model relates to a bridge antidetonation technical field especially relates to a public road bridge is with antidetonation device.

Background

The earthquake damages the bridge, mainly caused by the ground surface damage and the earthquake damage of the bridge, the ground crack can cause the shortening and the extension of the bridge span or the sinking of the pier, the collapse, the bank slope sliding and the falling of the mountain stone caused by the strong earthquake in the steep mountain area or the sandy soil and soft clay river bank can cause the bridge to be damaged, the sand liquefaction is easily caused by the earthquake action in the saturated and loose sandy soil of the shallow layer, the bridge suddenly sinks or unevenly sinks, even the bridge topples, and the bank slope sliding, the cracking, the collapsing and the like are often caused by the earthquake in the slope soil bank or the ancient river channel, thereby causing the bridge to be damaged, and at this time, a professional earthquake-proof device is needed for auxiliary work.

Device among the current patent document, when the pontic shakes because of external environment takes place, can protect the pontic to slight vibrations, but when faced violent vibrations, the antidetonation effect of inside antidetonation device is relatively poor, and simultaneously, general antidetonation device only carries out the shock attenuation to the vibrations of vertical direction, can't cushion the vibrations in the horizontal direction, uses inconveniently.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the shortcomings in the prior art and providing an anti-seismic device for a highway bridge.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an anti-seismic device for highway bridges comprises a bridge body and two symmetrically arranged piers, wherein the upper surface of each pier is provided with a fixed block, the bottom side of the bridge body is provided with a supporting beam, the bottom end of the supporting beam is slidably arranged in the fixed block, the bottom end of the supporting beam is provided with a bearing plate, the bottom inner wall of the fixed block is provided with a pressing spring, the pressing spring is fixedly connected with the bearing plate, the lower surface of the bridge body is provided with a fixed rod, the side wall of one side of the fixed rod is provided with an installation block B, the side wall of the pier is provided with a chute, the inner wall of the chute is provided with a sliding rod, the sliding rod is provided with two symmetrically arranged sliding blocks, the side wall of one side of each sliding block is fixedly provided with an installation block A, a connecting rod A is hinged between the installation block A and the installation block B, and the sliding rod is provided with a rubber sleeve positioned between the two sliding blocks, two fixed mounting has the crossbeam between the pier, the bottom side fixed mounting of the pontic has montant B, clamp plate A is installed to montant B's bottom side, the last surface mounting of crossbeam has the supporting seat, the last surface mounting of supporting seat has montant A, slidable mounting has clamp plate B on the montant A, rotate between clamp plate A and the clamp plate B and install a plurality of connecting rods B, pressure release spring is installed on the top side of supporting seat, pressure release spring and clamp plate B fixed connection.

Preferably, a plurality of vent holes are formed in the bridge body; when wind power is stronger, the impact force on the bridge body can be very large, and the impact force on the bridge body caused by the wind power can be effectively reduced by arranging the ventilation holes, so that a certain protection effect can be achieved.

Preferably, a thread groove is formed in the bridge body, a locking bolt is rotatably mounted in the fixing rod, and threads on the locking bolt are matched with the thread groove; through setting up thread groove and locking bolt, can be convenient with dead lever fixed mounting on the pontic, also be convenient for change convenient to use.

Preferably, elastic pads are fixedly arranged on the inner wall of the top side and the inner wall of the bottom side of the sliding chute; when the slider moves due to the vibration of the bridge body, the slider can continuously collide with the inner wall of the sliding groove, so that the slider is easy to damage.

Preferably, a rubber pad is fixedly arranged at the top end of the vertical rod A; through setting up the rubber pad, can further reduce the vibrations of pontic, can cushion some component, protect the pontic.

Preferably, the pressing plate A and the pressing plate B are both provided with movable grooves, rotating shafts are rotatably arranged in the movable grooves, and the connecting rod B is fixedly connected with the rotating shafts; through setting up the pivot, connecting rod B can remove along with the removal of pivot, simple structure.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses in, support pressure spring and pressure release spring through setting up, when the pontic receives violent vibrations, at first a supporting beam downstream, a supporting beam downstream drives the bearing plate downstream, support the pressure spring and be compressed, montant B downstream simultaneously, montant B downstream drives clamp plate A downstream, clamp plate A downstream drives connecting rod B downstream, connecting rod B downstream drives clamp plate B downstream, clamp plate B downstream then begins to extrude pressure release spring, pressure release spring is compressed, the pontic is cushioned, and clamp plate A presses the rubber pad, the rubber pad takes place deformation, the shock attenuation of the more nearly one step of pontic.

2. The utility model discloses in, through setting up the rubber sleeve, when the bridge receives the ascending vibrations of horizontal direction, the slider slides on the slide bar to constantly extrude the rubber sleeve, the rubber sleeve takes place deformation, can cushion well, makes the bridge safer, through setting up the cushion, the slider strikes the cushion when removing, can avoid the slider to cause the damage because of directly striking the spout inner wall.

Drawings

Fig. 1 is a schematic structural view of an anti-seismic device for a highway bridge according to the present invention;

fig. 2 is a schematic structural diagram of a of an anti-seismic device for a highway bridge according to the present invention;

fig. 3 is a schematic structural view of a second embodiment of the anti-seismic device for the highway bridge according to the present invention.

In the figure: the bridge comprises a bridge body 1, a bridge pier 2, a cross beam 3, a supporting beam 4, a bearing plate 5, a fixing block 6, a butting spring 7, a fixing rod 8, a rubber sleeve 9, a sliding groove 10, a sliding rod 11, a sliding block 12, an installation block A13, an installation block B14, an installation block B15, a connecting rod A16, a supporting seat 17, a vertical rod A18, a pressure relief spring 19, a vertical rod B20, a pressing plate A21, a pressing plate B22, a rubber pad 23, a connecting rod B23 and vent holes 24.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

The first embodiment is as follows:

an anti-seismic device for a highway bridge comprises a bridge body 1 and two bridge piers 2 which are symmetrically arranged, wherein the upper surface of each bridge pier 2 is provided with a fixed block 6, the bottom side of each bridge pier 1 is provided with a supporting beam 4, the bottom end of each supporting beam 4 is slidably arranged in the corresponding fixed block 6, the bottom end of each supporting beam 4 is provided with a bearing plate 5, the inner wall of the bottom of each fixed block 6 is provided with a pressing spring 7, each pressing spring 7 is fixedly connected with the corresponding bearing plate 5, a cross beam 3 is fixedly arranged between the two bridge piers 2, the bottom side of each bridge body 1 is fixedly provided with a vertical rod B19, the bottom side of each vertical rod B19 is provided with a pressing plate A20, the upper surface of each cross beam 3 is provided with a supporting seat 16, the upper surface of each supporting seat 16 is provided with a vertical rod A17, a pressing plate B21 is slidably arranged on each vertical rod A17, a plurality of connecting rods B23 are rotatably arranged between each pressing plate A20 and the corresponding pressing plate B21, the top side of each supporting seat 16 is provided with a pressure relief spring 18, each pressure relief spring 18 and each pressure plate B21 are fixedly connected, the top end of the vertical rod A17 is fixedly provided with a rubber pad 22, the pressure plate A20 and the pressure plate B21 are both internally provided with movable grooves, the movable grooves are internally and rotatably provided with rotating shafts, and the connecting rod B23 is fixedly connected with the rotating shafts, as shown in the attached figures 1 and 2; the rubber pad 22 is arranged, so that the vibration of the bridge body 1 can be further reduced, partial force can be buffered, the bridge body 1 can be protected, the connecting rod B23 can move along with the movement of the rotating shaft through the rotating shaft, and the structure is simple.

The lower surface of the bridge body 1 is provided with a fixed rod 8, the side wall of one side of the fixed rod 8 is provided with a mounting block B14, the side wall of the bridge pier 2 is provided with a sliding groove 10, the inner wall of the sliding groove 10 is provided with a sliding rod 11, the sliding rod 11 is provided with two symmetrically arranged sliding blocks 12 in a sliding way, the side wall of one side of each of the two sliding blocks 12 is fixedly provided with a mounting block A13, a connecting rod A15 is hinged between the mounting block A13 and the mounting block B14, the sliding rod 11 is provided with a rubber sleeve 9 positioned between the two sliding blocks 12, a thread groove is formed in the bridge body 1, a locking bolt is rotatably arranged in the fixed rod 8, threads on the locking bolt are matched with the thread groove, and elastic pads are fixedly arranged on the inner wall of the top side and the inner wall of the bottom side of the sliding groove 10, see figure 1; through setting up thread groove and locking bolt, can conveniently be with dead lever 8 fixed mounting on the pontic 1, also be convenient for change, convenient to use when slider 12 removes because of the pontic 1 vibrations, can constantly collide the inner wall of spout 10 on, can lead to slider 12 to damage easily like this, through setting up the cushion, slider 12 strikes the cushion when removing, can avoid slider 12 to cause the damage because of directly striking spout inner wall.

Example two:

relative to the first embodiment, the second embodiment: see fig. 3; a plurality of vent holes 24 are formed in the bridge body 1; when wind power is stronger, the impact force on the bridge body 1 is larger, and the air vent 24 is arranged, so that the impact force of the wind power on the bridge body 1 can be effectively reduced, and a certain protection effect can be achieved.

The working principle is as follows: when the bridge body 1 is slightly vibrated, the supporting beam 4 moves downwards to drive the bearing plate 5 to move downwards, the pressing spring 7 is compressed to buffer the bridge body 1 and reduce vibration, when the bridge body 1 is severely vibrated, firstly, the supporting beam 4 moves downwards to drive the bearing plate 5 to move downwards, the pressing spring 7 is compressed, meanwhile, the vertical rod B19 moves downwards, the vertical rod B19 moves downwards to drive the pressure plate A20 to move downwards, the pressure plate A20 moves downwards to drive the connecting rod B23 to move downwards, the connecting rod B23 moves downwards to drive the pressure plate B21 to move downwards, the pressure plate B21 moves downwards and then starts to press the pressure relief spring 18 to be compressed to relieve vibration of the bridge body 1, the pressure plate A20 presses the rubber pad 22, the rubber pad 22 deforms, the vibration reduction of the bridge body 1 is closer, and the bridge body 1 can be effectively protected, when the bridge body 1 receives vibration in the horizontal direction, the sliding block 12 slides on the sliding rod 11 and continuously extrudes the rubber sleeve 9, and the rubber sleeve 9 deforms and can be well buffered, so that the bridge body 1 is safer.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides an anti-seismic device for highway bridge, includes pier (2) that the pontic (1) and two symmetries set up, its characterized in that, the last surface mounting of pier (2) has fixed block (6), a supporting beam (4) is installed to the bottom side of pontic (1), the bottom slidable mounting of a supporting beam (4) is in fixed block (6), bearing plate (5) are installed to the bottom of a supporting beam (4), the bottom inner wall of fixed block (6) is installed and is supported pressure spring (7), support pressure spring (7) and bearing plate (5) fixed connection, the lower surface mounting of pontic (1) has dead lever (8), installation piece B (14) is installed to one side lateral wall of dead lever (8), spout (10) have been seted up to the lateral wall of pier (2), slide bar (11) are installed to the inner wall of spout (10), slidable mounting has slider (12) that two symmetries set up on slide bar (11), the bridge is characterized in that mounting blocks A (13) are fixedly mounted on the side walls of one side of the two sliders (12), connecting rods A (15) are hinged between the mounting blocks A (13) and the mounting blocks B (14), a rubber sleeve (9) positioned between the two sliders (12) is arranged on the slide bar (11), a cross beam (3) is fixedly mounted between the two piers (2), a vertical rod B (19) is fixedly mounted on the bottom side of the bridge body (1), a pressing plate A (20) is mounted on the bottom side of the vertical rod B (19), a supporting seat (16) is mounted on the upper surface of the cross beam (3), a vertical rod A (17) is mounted on the upper surface of the supporting seat (16), a pressing plate B (21) is slidably mounted on the vertical rod A (17), a plurality of connecting rods B (23) are rotatably mounted between the pressing plate A (20) and the pressing plate B (21), and a pressure relief spring (18) is mounted on the top side of the supporting seat (16), the pressure relief spring (18) is fixedly connected with the pressure plate B (21).

2. An anti-seismic device for road bridges according to claim 1, characterized in that said bridge body (1) has a plurality of ventilation holes (24) made therein.

3. An anti-seismic device for road and bridge according to claim 1, wherein a thread groove is formed in the bridge body (1), a locking bolt is rotatably installed in the fixing rod (8), and a thread on the locking bolt is matched with the thread groove.

4. An anti-seismic device for road bridges according to claim 1, wherein elastic pads are fixedly mounted on both the top inner wall and the bottom inner wall of the chute (10).

5. An anti-seismic device for road bridges according to claim 1, characterized in that the top ends of the vertical rods A (17) are fixedly provided with rubber pads (22).

6. An anti-seismic device for road and bridge according to claim 1, wherein movable grooves are formed in the pressure plate A (20) and the pressure plate B (21), rotating shafts are installed in the movable grooves in a rotating mode, and the connecting rods B (23) are fixedly connected with the rotating shafts.