Inertia activated wound rope shock absorption device for continuous beam bridge

Abstract

The invention discloses an inertia activated wound rope shock absorption device for a continuous beam bridge and belongs to the field of bridge buildings. The inertia activated wound rope shock absorption device is characterized in that a large transmission gear (3) is connected with a first transmission shaft, a small transmission gear (4) is connected with a balancing weight through a second transmission shaft (6), the balancing weight and the small transmission gear (4) are driven by the large transmission gear (3), and the first transmission shaft and the second transmission shaft (6) penetrate through reserved holes of a support and can rotate freely between two end plates of the support. The support is fixed to the top of a movable pier (12). A left friction shaft and a right friction shaft are in rigid connection with the support. Two symmetrically arranged connecting pieces (9) are fixed to a beam body (8). A pulling rope (1) penetrates through a center hole of the first transmission shaft, the pulling rope (1) is wound around the left friction shaft and the right friction shaft after being symmetrically wound on the two sides of the center hole by multiple circles, and finally, the pulling rope (1) is fixed to the connecting pieces (9). The movable pier and a fixed pier can be stressed cooperatively under the action of earthquake emergencies, and the overall earthquake resistance of the structure is improved.

Description

technical field [0001] The invention relates to a shock absorbing device for a continuous girder bridge using the potential of movable piers, which is suitable for shock absorption or anti-seismic reinforcement of railway bridges, highway bridges, urban viaducts and various large continuous beam structures, and can make the movable piers under the action of sudden earthquakes The utility model cooperates with the fixed pier to bear force and improve the overall seismic performance of the structure, and belongs to the field of bridge construction. Background technique [0002] In order to reduce the seismic response of continuous girder bridges and improve the seismic performance of continuous girder bridges, shock absorbing measures such as shock absorbers, isolation bearings and viscous dampers are usually used for continuous girder bridges, such as lead rubber bearings, viscous dampers, etc. Wait. However, the current conventional schemes do not change the condition that ...

AI Technical Summary

Problems solved by technology

In recent years, some scholars have proposed a Lock-up device. From a technical point of view, it can realize the coordinated force bearing of each pier, but this device is not only expensive, but also complicated to check and maintain later, and the operation and maintenance costs are high. Applications in the

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