Separate-function self-resetting damping bridge and mounting method thereof

Abstract

A separate-function self-resetting damping bridge and a mounting method thereof are provided. The separate-function self-resetting damping bridge comprises abutments, piers, a girder, sliding supportsto support the girder at the abutments and piers, and horizontal self-resetting energy-dissipating damping systems to connect with the girder. Each horizontal self-resetting energy-dissipating damping system is formed by serially connecting a self-resetting energy-dissipating damper and an acceleration-related locking device, a series positioning device is arranged at the serial connection and fixed to the bottom of the girder. The horizontal self-resetting energy-dissipating damping systems are hinged to the abutments, piers and girder via connective members; axes of the horizontal self-resetting energy-dissipating damping systems are of a certain angle relative to the axis of the girder; the acceleration-related locking devices are adaptive to temperature deformation of the bridge undernormal operation and maintenance and are activated instantaneously upon an earthquake, the self-resetting energy-dissipating dampers start operating; the sliding supports and the self-resetting energy-dissipating damping systems allow vertical and horizontal functional separation. The relative displacement of a pier bridge under the earthquake action can be effectively limited, earthquake damageto the piers is decreased, and traffic restoration is ensured after the bridge structure experiences an earthquake.

Description

technical field [0001] The invention relates to a bridge structure system, in particular to a function-separated self-resetting shock-absorbing bridge used in conjunction with a self-resetting energy-consuming damper, an acceleration-related locking device, a series positioning device and a sliding support. Background technique [0002] The improvement of the seismic performance of the existing bridge structure system is mainly realized by setting shock-absorbing measures such as shock-absorbing and isolating bearings and elastic-plastic blocks. The seismic displacement response of the beam body of the bridge adopting these shock-absorbing measures is relatively large, which is extremely large. It is easy to cause the damage of the support and the occurrence of earthquake damage such as falling beams. In addition, these traditional shock absorption measures have a large residual displacement of the main girder after the earthquake, which cannot restore the bridge structural ...

AI Technical Summary

Problems solved by technology

[0002] The improvement of the seismic performance of the existing bridge structure system is mainly realized by setting shock-absorbing measures such as shock-absorbing and isolating bearings and elastic-plastic blocks. The seismic displacement response of the beam body of the bridge adopting these shock-absorbing measures is relatively large, which is extremely large. It is easy to cause the damage of the support and the occurrence of earthquake damage such as falling beams

In addition, these traditional shock absorption measures have a large residual displacement of the main girder after the earthquake, which cannot restore the bridge structural system to its original state, and it is difficult to meet the requirements of emergency operation after the earthquake.

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