Bridge supporting device, installation method thereof and bridge supporting system

Abstract

The invention discloses a bridge supporting device, an installation method thereof and a bridge supporting system. The bridge supporting device comprises supporting bearings, seismic isolation bearings and installation seats, wherein the supporting bearings are fixed on a bridge pier and fixedly connected to an upper structure; the installation seats are fixed on the bridge pier and positioned onthe sides of the supporting bearings; and the seismic isolation bearings are fixed to the installation seats and fixedly connected to the upper structure. The bridge supporting device, the installation method thereof and the bridge supporting system separate the conventional functions from the seismic isolation function of the bearings. The whole bridge supporting system has a simple structure, greatly decreases the bridge cost and reduces traffic pollution.

Description

technical field [0001] The invention belongs to the technical field of bridge support devices, and in particular relates to a bridge support device, an installation method and a bridge support system which separate the conventional function of a support from the auxiliary function during an earthquake. Background technique [0002] The bridge bearing is set between the superstructure of the bridge and the bridge piers, which plays the role of connecting the upper and lower, and is the key component of the bridge. Bridge bearings transfer various loads from the bridge superstructure to the piers. The general functions of the bearing include vertical load bearing function, rotation function and horizontal movement function. The normal function of the bearing can ensure the stability of the bridge under daily load. [0003] The auxiliary damping function of the support during earthquake includes: horizontal load bearing function, spring function and pull-out resistance functi...

AI Technical Summary

Problems solved by technology

[0007] 1) The size of the support is too large;

[0008] 2) It is difficult to set the stiffness of the horizontal direction of the support;

[0009] 3) Due to the lack of vertical rigidity of urban bridges due to the use of rubber bearings, traffic vibration pollution is caused;

[0010] 4) A certain pier or several piers of a bridge are seriously damaged, while other piers are not damaged, and the force cannot be coordinated

[0011] The design idea of ​​the existing bearing is to combine the conventional function of the bearing and the function of shock absorption and isolation on one bearing, which will make it difficult to set the horizontal stiffness of the bearing, and often the horizontal stiffness cannot be satisfied if the bearing capacity is satisfied. ; If the horizontal stiffness is satisfied, the bearing capacity cannot be satisfied

The friction pendulum vibration isolation bearing may lift the bridge under normal use conditions, but the acceleration response is reduced under the earthquake condition, and the displacement is too large

Images