Support for shock absorption and isolation of bridge

Abstract

The invention provides a support for shock absorption and isolation of a bridge. The support comprises an upper base plate, an energy absorption assembly, a lower base plate and at least one group ofelastic assemblies, a cavity is formed in the lower base plate; containing cavities with the number equal to that of the elastic assemblies are formed in the lower end of the upper base plate, the elastic assemblies are arranged in the containing cavities in a one-to-one correspondence mode, the upper base plate is arranged on the bottom face of the cavity in a sliding mode through the elastic assemblies, and the energy absorption assemblies are arranged in the cavity and located between the lower end of the upper base plate and the inner side wall of the cavity. By the adoption of the technical scheme, the support has the advantages that earthquake energy can be consumed through deformation, the shock reduction and isolation effect is achieved, and a bridge is prevented from being damaged; and the requirements of translational displacement and rotational displacement in the daily use process are met.

Description

technical field [0001] The invention relates to the technical field of bridge supports, in particular to a support for shock absorption and isolation of bridges. Background technique [0002] Earthquakes are sudden natural disasters. In order to avoid earthquakes causing huge losses to people's lives and properties, at present, engineering structures often take seismic isolation measures to reduce the loss of earthquakes to engineering structures. [0003] There are the following problems in existing similar shock-absorbing and isolating bearings used in bridges: [0004] 1. Under normal use conditions, due to the disadvantages of the structure of the support itself, the beam body will be raised and the road surface will be raised, which will affect the driving comfort and safety. To be specific: when the bearing changes in normal temperature and moves during operation, it will cause the beam body to rise or fall continuously, which will affect the comfort and safety of dri...

AI Technical Summary

Problems solved by technology

[0004] 1. Under normal use conditions, due to the disadvantages of the structure of the support itself, the beam body will be raised and the road surface will be raised, which will affect the driving comfort and safety

Specifically: when the bearing is displaced under normal temperature changes and during operation, it will cause the beam body to rise or fall continuously, affecting driving comfort and safety

[0005] 2. The coefficient of friction is unstable, which affects the effect of shock absorption and isolation

The slide plate of the existing shock-absorbing and isolation bearing adopts the slide plate material of the conventional support, and the slide plate material needs to be lubricated with silicon grease, which has a lower friction coefficient after applying silicon grease, which is beneficial to the temperature expansion and contraction of the bridge, but greatly affects the earthquake Medium Friction Dissipation

[0006] 3. The limit structure of the conventional shock-absorbing and isolating support conflicts with the rotating structure

Since the limit structure requires no gap between the support parts, and the rotation needs to reserve a certain gap to meet the corner, there is a structural conflict between the two

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