Movable bridge support

Abstract

The invention belongs to the technical field of bridge supports, and particularly relates to a movable bridge support which comprises a base, a mounting cavity, an elastic plate, balls, a supporting column, a supporting plate, a moving mechanism and an assisting mechanism. The base is cylindrical, and the mounting cavity is formed in the base; the lower end in the mounting cavity is elastically connected with an elastic plate up and down through a spring; a ball is connected into the upper wall of the elastic plate in a rolling mode; a supporting column is arranged on the upper surface of the ball in a contact manner; the supporting column is cylindrical, the upper end of the supporting column is fixedly connected with a supporting plate, and the supporting column is arranged in the mounting cavity; and when the expansion plate is extruded, internal air pressure of the expansion plate can be conveyed into the elastic pipe, even if the bridge shakes seriously due to an earthquake, the elastic pipe is expanded, then a power assisting plate at the outer end of the elastic pipe is extruded, a friction force between the power assisting plate and the ball is greatly enhanced, limiting of the supporting column is further improved, therefore, the bridge main body and the support can be protected at the same time during the earthquake.

Description

technical field [0001] The invention belongs to the technical field of bridge supports, in particular to a movable bridge support. Background technique [0002] The bridge bearing is an important structural component connecting the upper structure and the lower structure of the bridge. It is located between the bridge and the pad stone. It can reliably transmit the load and deformation (displacement and rotation angle) borne by the upper structure of the bridge to the lower structure of the bridge. important power transmission device. There are two kinds of fixed bearings and movable bearings. The commonly used bearing forms in bridge engineering include: asphalt felt or flat bearing, plate rubber bearing, spherical bearing, steel bearing and special bearing, etc. [0003] The existing bridge bearings usually have more plate-type rubber bearings. Although the structure of the plate-type rubber bearings is relatively stable, its deformation capacity is poor, especially in s...

AI Technical Summary

Problems solved by technology

[0003] The existing bridge bearings usually have more plate-type rubber bearings. Although the structure of the plate-type rubber bearings is relatively stable, its deformation capacity is poor, especially in the seismic zone. When an earthquake occurs, the traditional bridge bearings cannot provide Sufficient displacement distance so that bridges in the vicinity of the seismic zone are almost at risk of collapse whenever an earthquake occurs

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