A Seismic Self-Locking Bearing of Continuous Beam Bridge Using Multi-Grade Particle Filling Limit

Abstract

The invention discloses a continuous girder bridge anti-seismic self-locking support filled and limited by multi-graded particles. The continuous girder bridge anti-seismic self-locking support filled and limited by the multi-graded particles comprises an upper connecting plate, a support main body, a rubber cushion layer, a basin type bottom plate, a horizontal trigger plate connecting piece, a horizontal trigger plate, an annular stopping plate, a fixed column, multi-graded particles, an annular inclined stopping plate, a horizontal stopping plate, a cushion block, a vertical partition plate, a bolt, a backing plate with a hole, a rotating shaft and a lower connecting plate. During normal using, the horizontal stopping plate is spliced on the horizontal triggering plate, the multi-graded particles are positioned in a particle container and the support main body and the rubber cushion layer can freely slide relative to each other so that girder-to-pier temperature shifting demand is met; when the relative displacement of a girder body and a sliding pier exceeds a set threshold in an earthquake, the horizontal stopping plate is separated from the horizontal triggering plate and rotates downward, and the multi-graded particles in the particle container fall into a gap between the support main body and the basin type bottom plate to limit the relative displacement of the girder body and the pier; therefore, a purpose that the sliding pier and a fixed pier bear force in a cooperative manner is achieved.

Description

technical field [0001] The invention relates to an anti-seismic self-locking support of a continuous beam bridge using multi-graded particles to fill the limit, which is suitable for being installed at the joint between pier and beam body of a multi-span continuous beam bridge, and belongs to the technical field of anti-seismic bridges. Background technique [0002] Bearings are connecting components connecting piers and decks in continuous girder bridges, and their mechanical properties and constraints significantly affect the overall performance of the bridge. In order to meet the displacement requirements between continuous girder bridge piers under temperature load, usually only one support is selected for horizontal constraint, thus forming a fixed support, while other supports are hinged. In this state, the piers with fixed supports are called fixed piers, which are the main force-bearing members, and other piers are called sliding piers. The above traditional forms m...

AI Technical Summary

Problems solved by technology

This kind of support has simple structure, low cost, and is easy to maintain and maintain. However, there are problems of misactivation under normal conditions and collision problems between the gaps after locking, and its practicability needs to be improved.

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