An earthquake-resistant limiting device of a bridge which is convenient to be replaced

Abstract

The invention relates to an earthquake-resistant limiting device of a bridge which is convenient to be replaced, includes piers, the top side of the pier is provided with a mounting groove, one side of the mounting groove is provided with an opening, A mounting box is movably mount in that mounting groove, the top side of the mounting box is provided with an opening, Two fixing blocks are fixedlyinstalled on the inner wall of the bottom side of the mounting box, L-shaped plates are rotatably installed on the top sides of the two fixing blocks, the top sides of the two L-shaped plates extend out of the mounting groove and are movably installed with the same support plate, the bridge body is movably installed on the top side of the support plate, and tie rods are rotatably installed on theside of the two L-shaped plates away from each other. The invention can effectively improve the vibration received by the bridge body during the earthquake through the multi-level cushioning, therebyensuring the seismic performance of the bridge body, prolonging the service life of the bridge body, and facilitating the disassembly and replacement of the installation box, thereby further improvingthe seismic performance of the bridge body.

Description

Technical field: [0001] The invention relates to the field of bridge anti-seismic technology, in particular to a bridge anti-seismic limiting device which is convenient to replace. Background technique: [0002] The damage to bridges caused by earthquakes is mainly caused by ground surface damage and bridge damage caused by earthquakes. In steep mountainous areas or sandy soil and soft clay river banks, landslides, bank slope sliding and rock rolling caused by strong earthquakes can damage bridges. In shallow saturated and loose sandy soil, earthquake action can easily cause sandy soil liquefaction, resulting in sudden or uneven sinking of the bridge, or even bridge toppling. Slope slipping, cracking and collapse will cause bridge damage. The earthquake damage of the bridge is due to the horizontal and vertical vibration of the bridge caused by the earthquake, resulting in damage and destruction of the bridge components, and even the collapse of the bridge. [0003] The pub...

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Problems solved by technology

[0003] The publication number is CN205000236U, which discloses a bridge anti-seismic limiting device, which at least includes a plurality of beam body embedded parts arranged at intervals outside the beam body web and a plurality of pier column embedded parts arranged outside the pier column. The embedded parts of the body and the embedded parts of the pier column are arranged in one-to-one correspondence, and the embedded parts of the beam body and the embedded parts of the pier column are respectively fixed and arranged on the beam body and the pier by penetrating anchor bolts. However, this device cannot offset the vibration through multi-stage buffering, which makes the seismic performance of the bridge poor. At the same time, the anti-seismic limit device is not easy to replace, so that it cannot be well maintained and repaired, which reduces the seismic performance of the bridge. performance

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