CN111877132B - Bridge falling prevention device - Google Patents

Abstract

The invention discloses a bridge anti-falling beam device, comprising two concrete anti-vibration blocks, two sliding rod bodies and two buffer devices. The two ends of the cover beam are respectively provided with concrete anti-vibration blocks, and both ends of the bridge are provided with There is a pushing body for driving the corresponding buffer device, the two ends of the sliding rod body are respectively fixedly connected with two concrete anti-vibration blocks, the buffer device is arranged on the two sliding rod bodies, and the buffer device includes a first sliding plate , a spring body, a second sliding plate and a connecting piece, the first sliding plate and the second sliding plate are slidably arranged on the two sliding rod bodies, the first sliding plate is close to the concrete anti-vibration block, the first sliding plate A spring body is arranged between the plate and the second sliding plate. Compared with the prior art, the spring body can be reused and the occurrence of transverse beam falling accidents can be reduced.

Description

A bridge anti-drop beam device

【Technical field】

The invention relates to the technical field of bridges, in particular to the technical field of a bridge anti-drop beam device.

【Background technique】

Although an earthquake is an accidental event, once an earthquake occurs, it will cause different degrees of damage to the building structure. The different degrees of earthquake damage will lead to different maintenance and reinforcement costs required to restore the original structural function in the later stage. With the statistical analysis of earthquake disaster data over the years, more and more attention has been paid to the structural seismic and seismic isolation design of the structure, and the overall seismic capacity of the structure can be improved by adopting some seismic isolation measures. According to the existing earthquake disaster data, the horizontal beam drop of the structure caused by the earthquake occurs from time to time. In order to effectively avoid or reduce the lateral beam drop accidents of bridge structures, there is still a lot of research work to be carried out, and it has become a hot research topic in the field of civil engineering earthquake resistance and isolation.

Under the action of excessive earthquake, the main beam of the bridge structure is prone to large lateral displacement in the direction of the transverse bridge, and the main beam will directly interact with the lateral restraining displacement measures set on the cover beam, such as anti-seismic blocks and buffer energy dissipation measures. contact or collision. Usually, it is at the expense of destroying the lateral restraining displacement measures such as anti-seismic blocks and buffering energy dissipation measures to prevent the beam drop accident of the main beam of the bridge structure. Most of the existing bridge structure anti-seismic block devices mainly rely on the deformation and damage of the device itself to resist earthquake disasters, and the repositionability of the structure after the earthquake is relatively poor and cannot be reused. In addition, when the main beam is displaced laterally and hits the anti-vibration block on one side, the anti-vibration blocks on both sides cannot share the impact force, so the impact force on the anti-vibration block on one side is greatly increased, which is easy to cause lateral fall The occurrence of the beam accident.

[Content of the invention]

The purpose of the present invention is to solve the problems in the prior art, and to propose a bridge anti-drop beam device, which can be reused and reduce the occurrence of lateral beam drop accidents.

In order to achieve the above purpose, the present invention proposes a bridge anti-falling beam device, which includes two concrete anti-vibration blocks, two sliding rod bodies and two buffer devices. The two ends of the cover beam are respectively provided with concrete anti-vibration blocks. Both ends are provided with pushing bodies for driving the corresponding buffering devices, the two ends of the sliding rod body are respectively fixedly connected with two concrete anti-vibration blocks, the buffering devices are arranged on the two sliding rod bodies, and the buffering device It includes a first sliding plate, a spring body, a second sliding plate and a connecting piece, the first sliding plate and the second sliding plate are slidably arranged on the two sliding rod bodies, and the first sliding plate is close to the concrete anti-vibration block, A spring body is arranged between the first sliding plate and the second sliding plate, a blocking body located at the rear end of the second sliding plate is arranged on the sliding rod body, a connecting piece is arranged on the first sliding plate, and the The pushing body is used for pulling the connecting piece to move closer to the center axis of the cover beam and pushing the second sliding plate to move away from the center axis of the cover beam.

Preferably, the connecting piece includes a baffle body and two connecting rods, the baffle body is slidably arranged on the two sliding rod bodies, and the inner and outer ends of the baffle body are connected to the first sliding plate through the connecting rods. Fixed connection, the pushing body is located between the baffle body and the second sliding plate.

Preferably, the front and rear ends of the concrete anti-vibration block are provided with reinforcing plates, the two reinforcing plates are fixedly connected together by a number of bolt pairs, and the two ends of the sliding rod body are fixedly connected with the corresponding reinforcing plates .

Preferably, a shock absorber located in the spring body is provided between the first sliding plate and the second sliding plate.

Preferably, an adjusting support device is provided between the first sliding plate and the corresponding reinforcing plate.

Preferably, the adjusting support device includes a screw body and a nut body, the screw body is fixed on the first sliding plate, the screw body is provided with a nut body matched with it, and the nut body and the reinforcing plate are connected to each other. A shock-absorbing block is arranged between the shock-absorbing blocks, an anti-collision block is provided on the opposite surface of the shock-absorbing block and the nut body, and an anti-collision head is provided on the corresponding end of the nut body and the anti-collision block.

Beneficial effects of the present invention: the present invention pushes the second sliding plate to compress the spring body through the front pushing body and the rear pushing body drives the first sliding plate to compress the spring body through the connecting piece to consume the impact force of the bridge laterally moving to the left; the front pushing body The first sliding plate compression spring body and the rear pushing body are driven by the connecting piece to push the second sliding plate compression spring body to consume the impact force of the bridge laterally moving to the right, and the lateral impact force of the bridge is jointly borne by the concrete anti-vibration blocks on both sides. It reduces the occurrence of lateral beam drop accidents caused by the collision of a certain side of the concrete seismic block by the bridge due to excessive impact force.

The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings.

【Description of drawings】

1 is a schematic structural diagram of a bridge anti-falling beam device of the present invention;

2 is a partial top view of a bridge anti-drop beam device of the present invention.

In the picture: 1-Concrete seismic block, 2-Sliding rod body, 3-Buffer device, 4-Propulsion body, 5-Reinforcing plate, 6-Adjustment support device, 7-Bolt pair, 8-Cover beam, 9-Bridge, 31-first sliding plate, 32-spring body, 33-second sliding plate, 34-connector, 35-blocking body, 36-shock absorber, 341-baffle body, 342-connecting rod, 61-screw body , 62-nut body, 63-shock block, 64-anti-collision block, 65-anti-collision head.

【Detailed ways】

Referring to Figures 1 and 2, a bridge anti-falling beam device of the present invention includes two concrete anti-vibration blocks 1, two sliding rod bodies 2 and two buffer devices 3, and both ends of the cover beam 8 are respectively provided with concrete anti-vibration blocks. 1. Both ends of the bridge 9 are provided with a pushing body 4 for driving the corresponding buffer device 3, the two ends of the sliding rod body 2 are respectively fixedly connected with two concrete anti-vibration blocks 1, and the buffer device 3 is located in the On the two sliding rod bodies 2, the buffer device 3 includes a first sliding plate 31, a spring body 32, a second sliding plate 33 and a connecting piece 34. The first sliding plate 31 and the second sliding plate 33 are slidably arranged on the On the two sliding rod bodies 2, the first sliding plate 31 is close to the concrete anti-vibration block 1, a spring body 32 is provided between the first sliding plate 31 and the second sliding plate 33, There is a blocking body 35 located at the rear end of the second sliding plate 33, the first sliding plate 31 is provided with a connecting piece 34, and the pushing body 4 is used to pull the connecting piece 34 to move closer to the central axis of the cover beam and push the second sliding plate 31. The sliding plate 33 moves away from the central axis of the cover beam. The connecting member 34 includes a baffle body 341 and two connecting rods 342 . The baffle body 341 is slidably arranged on the two sliding rod bodies 2 . The inner and outer ends of the 341 are fixedly connected to the first sliding plate 31 through the connecting rod 342, the pushing body 4 is located between the baffle body 341 and the second sliding plate 33, and the front and rear ends of the concrete anti-vibration block 1 are A reinforcing plate 5 is provided, the two reinforcing plates 5 are fixedly connected together by several bolt pairs 7, the two ends of the sliding rod body 2 are fixedly connected with the corresponding reinforcing plates 5, and the first sliding plate 31 and A shock absorber 36 located in the spring body 32 is provided between the second sliding plates 33 , and an adjusting support device 6 is provided between the first sliding plate 31 and the corresponding reinforcing plate 5 , and the adjusting support device 6 includes The screw body 61 and the nut body 62 are fixed on the first sliding plate 31 . A shock-absorbing block 63 is provided, and an anti-collision block 64 is provided on the opposite surface of the shock-absorbing block 63 and the nut body 62 , and an anti-collision head 65 is provided on the corresponding end of the nut body 62 and the anti-collision block 64 .

The working process of the present invention:

During the working process of the bridge anti-drop beam device of the present invention, when the bridge moves laterally to the left, the front pushing body 4 pushes the second sliding plate 33 to compress the spring body 32 and the rear pushing body 4 drives the first sliding through the connecting piece 34 The plate 31 compresses the spring body 32 to consume the impact force of the bridge laterally moving to the left; when the bridge laterally moves to the right, the front pushing body 4 drives the first sliding plate 31 to compress the spring body 32 and the rear pushing body 4 to push the second sliding plate 34 through the connecting piece 34 The sliding plate 33 compresses the spring body 32 to consume the impact force of the bridge laterally moving to the right.

The above-mentioned embodiments are illustrative of the present invention, not limitations of the present invention, and any scheme after simple transformation of the present invention belongs to the protection scope of the present invention.

Claims (3)

1. The utility model provides a roof beam device is prevented falling by bridge which characterized in that: the concrete anti-seismic bridge comprises two concrete anti-seismic stops (1), two slide bar bodies (2) and two buffering devices (3), the two ends of a bent cap (8) are respectively provided with the concrete anti-seismic stops (1), the two ends of a bridge (9) are respectively provided with a pushing body (4) for driving the corresponding buffering devices (3), the two ends of each slide bar body (2) are respectively fixedly connected with the two concrete anti-seismic stops (1), the buffering devices (3) are arranged on the two slide bar bodies (2), each buffering device (3) comprises a first sliding plate (31), a spring body (32), a second sliding plate (33) and a connecting piece (34), the first sliding plate (31) and the second sliding plate (33) can be arranged on the two slide bar bodies (2) in a sliding manner, the first sliding plate (31) is close to the concrete anti-seismic stops (1), and the spring body (32) is arranged between the first sliding plate (31) and the second sliding plate (33), the concrete anti-seismic stop block is characterized in that the sliding rod bodies (2) are respectively provided with a blocking body (35) positioned at the rear end of the second sliding plate (33), the first sliding plate (31) is provided with a connecting piece (34), the pushing body (4) is used for pulling the connecting piece (34) to move towards the central axis of the cover beam and pushing the second sliding plate (33) to move away from the central axis of the cover beam, the connecting piece (34) comprises a baffle body (341) and two connecting rods (342), the baffle body (341) can be slidably arranged on the two sliding rod bodies (2), the inner end and the outer end of the baffle body (341) are fixedly connected with the first sliding plate (31) through the connecting rods (342), the pushing body (4) is positioned between the baffle body (341) and the second sliding plate (33), the front end and the rear end of the concrete anti-seismic stop block (1) are respectively provided with reinforcing plates (5), and the two reinforcing plates (5) are fixedly connected together through a plurality of bolt pairs (7), the two ends of the sliding rod body (2) are fixedly connected with the corresponding reinforcing plates (5), and adjusting and supporting devices (6) are arranged between the first sliding plate (31) and the corresponding reinforcing plates (5).

2. A bridge girder falling prevention device according to claim 1, wherein: a damper (36) positioned in the spring body (32) is arranged between the first sliding plate (31) and the second sliding plate (33).

3. A bridge girder falling prevention device according to claim 1, wherein: adjust strutting arrangement (6) including the screw body (61) and the nut body (62), the screw body (61) is fixed to be established on first sliding plate (31), be equipped with on the screw body (61) rather than matched with nut body (62), be equipped with snubber block (63) between nut body (62) and reinforcing plate (5), be equipped with anticollision piece (64) on the opposite face of snubber block (63) and nut body (62), be equipped with anticollision head (65) on the corresponding end of nut body (62) and anticollision piece (64).

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