A new type of bridge shock-absorbing convex rubber pad block

Abstract

The utility model provides a novel bridge shock attenuation convex rubber pad, including pad body, the pad body is rubber material, the whole is blocky structure, the upper surface of pad body is equipped with the convex part that protrudes upwards, the lower surface of pad body is the even bearing surface, the convex part and pad whole are integral forming structure, the convex part is spherical convex, or curved surface convex, or step convex. The convex part rigidity that the upper surface is equipped with is smaller, when the seismic force is borne, the convex part is larger, and the shock attenuation buffering effect is larger, and the impact force of beam body to the baffle block can be more effectively reduced to reduce the damage probability of baffle block than traditional bridge ordinary flat plate rubber pad, the probability of falling beam due to baffle block damage is reduced, and the repair treatment cost of baffle block after earthquake is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of bridge engineering vibration damping rubber pads, specifically relating to a new type of bridge vibration damping convex rubber pad. Background Technology

[0002] Bridge design incorporates transverse reinforced concrete retaining blocks on both sides of the pier cap beam to prevent the bridge structure from falling off the pier during earthquakes. Falling beams can cause damage to the bridge structure, casualties, traffic disruptions, and prolonged traffic recovery times, resulting in significant hazards and economic losses. Bridge engineers install rubber pads between the retaining blocks and the bridge structure to reduce the impact force of the bridge structure on the retaining blocks during earthquakes, preventing damage caused by hard-on-hard collisions and subsequent beam collapse. However, currently used flat rubber pads deform less under earthquake impacts, resulting in limited shock absorption. While they prevent hard-on-hard collisions, they are not very effective at reducing the impact force of the bridge structure on the retaining blocks. Especially during strong earthquakes, the retaining blocks often crack severely, sometimes leading to beam collapse, and post-earthquake repair work is substantial. Summary of the Invention

[0003] To address the above issues and overcome the shortcomings of existing technologies, this application provides a novel bridge vibration-damping convex rubber pad. By incorporating a convex portion into the pad body, the pad structure is optimized, enhancing the vibration damping and buffering effect during the collision between the bridge beam and the pad during an earthquake. To achieve the above objective, the technical solution adopted by this utility model is: a novel bridge vibration-damping convex rubber pad, comprising a pad body made of rubber, with an overall block structure. The upper surface of the pad body has an upwardly protruding convex portion, and the lower surface of the pad body is a flat support surface. The convex portion and the pad body are integrally formed.

[0004] Furthermore, the convex portion is a spherical convex shape, a curved convex shape, or a stepped convex shape.

[0005] The beneficial effects of this utility model are as follows: The rubber pad body with an integrally molded structure, combined with the upwardly protruding convex part on the upper surface, has low stiffness and large deformation when subjected to seismic force, resulting in a greater shock absorption and buffering effect. Compared with traditional ordinary flat rubber pads for bridges, it can more effectively reduce the impact force of the beam on the abutment, thereby reducing the probability of damage to the abutment, lowering the probability of beam collapse due to abutment damage, and reducing the cost of repairing and treating abutment damage after an earthquake. Attached Figure Description

[0006] Figure 1 is a schematic diagram of the overall curved convex structure of this utility model. Figure 2 is a schematic diagram of the overall spherical convex structure of this utility model. Figure 3 is a schematic diagram of the overall stepped convex structure of this utility model, which includes rectangular steps and circular steps. Detailed Implementation

[0007] A novel type of bridge vibration-damping convex rubber pad requires mold fabrication during factory production. The lower cubic portion is formed from steel plates, with a fully open bottom and a circular or rectangular opening at the top. The upper part of the spherical convex portion is a steel sphere, the upper part of the curved convex portion is a steel curved surface, and the upper part of the stepped convex portion is a steel plane with flat or cylindrical surfaces on all sides. The lower cubic portion and the upper part of the convex portion are then welded together. Finally, the mold is fixed with the opening facing upwards and the convex portion facing downwards. Liquid natural rubber or neoprene rubber is poured into the mold, and after cooling and solidification, it is demolded.

[0008] When installing this rubber pad, fix the bottom surface of the rubber pad to the stop block, with the convex part of the top surface facing the beam. There is a certain gap between the convex part of the rubber pad and the side of the beam. When an earthquake causes the beam to vibrate laterally, the beam collides with the rubber pad. The convex part of the rubber pad deforms significantly, playing a significant role in shock absorption and buffering. It is easy to install and convenient to maintain and replace later.

Claims

1. A novel bridge vibration-damping convex rubber pad, characterized in that, The device includes a pad body, which is made of rubber and has a block-like structure. The upper surface of the pad body has an upwardly protruding convex part, and the lower surface of the pad body is a flat support surface. The convex part and the pad body are integrally formed.

2. The novel bridge vibration-damping convex rubber pad according to claim 1, characterized in that, The convex part is a spherical convex part, or a curved convex part, or a stepped convex part.

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