Fixing support with bidirectional shock absorbing and beam lowering prevention functions

Abstract

The invention relates to the field of shock-absorbing composite support structures, in particular to a fixing support with bidirectional shock absorbing and beam lowering prevention functions. The support comprises a base plate, a lower support plate, a middle support plate, an upper support plate and a top plate which are placed in a successive overlapped mode from bottom to top; the lower support plate can be slidably connected to the upper end face of the base plate along a bridge in the axial direction; the upper end face of the upper support plate can be slidably connected to the lower end face of the top plate in the transverse direction of the bridge, and the lower end face can be rotatably connected to the middle support plate; a longitudinal damping device and a longitudinal limiting device are arranged between the base plate and the lower support plate, and a transverse damping device and a transverse limiting device are arranged between the top plate and the upper support plate. The support is compact in structure, the support can avoid the problem of limited installation space, and increase the seismic capacity of the bridge and the reliability of beam lowering prevention protection, and it is convenient to maintain.

Description

technical field [0001] The invention relates to the field of shock-absorbing composite support structures, in particular to a fixed support with the functions of two-way shock absorption and anti-fall beams. Background technique [0002] At present, in the prior art, continuous girders, cable-stayed bridges, and arch bridges mainly adopt the following four types of restraint methods: 1. Two longitudinal fixed supports are set on the main pier or bridge tower: for bridges with large spans, the pier cannot withstand the entire The seismic horizontal force of the beam body makes the design of the support extremely difficult. Under strong earthquakes, the supports are often sheared, resulting in damage to the bridge structure or even falling beams. 2. Velocity lockers are installed at the two main piers: under the action of earthquake, the velocity lockers of the two main piers play a role and share the seismic force of the beam evenly, which can properly reduce the seismic for...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the spherical steel bearing of the prior art mentioned in the above background technology only has the functions of one-way damping and anti-fall beam, and cannot realize the effect of two-way limit and anti-fall beam, and provides a A fixed support with the functions of two-way shock absorption and anti-drop beam

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