Design method of buffering, energy dissipation and anti-beam-falling device used for bridge

Abstract

The invention provides a design method of a buffering, energy dissipation and anti-beam-falling device used for a bridge. According to the displacement of a friction pendulum, the section form of the buffering, energy dissipation and anti-beam-falling device required to be used is derived reversely, the structural size of the device is further determined, according to the actual requirement, the buffering, energy dissipation and anti-beam-falling device can be mutually matched and coordinated with the friction pendulum, waste of material design or safety hazards are avoided, when a large earthquake occurs, a buffering and anti-beam-falling baffle plate or damping mortises and tenons can join yielding energy dissipation, the energy dissipation capacity of the system is effectively improved, when a small earthquake occurs, the device can play a role in protection and position limiting, the upper portion structure of the bridge is prevented from collision or beam falling or other serious damage, through the cooperation of the friction pendulum and other seismic mitigation and isolation supports, the shock insulation effect can be achieved, the safety of the whole structure is guaranteed, the device is particularly suitable for earthquake fortification in a near fault seismic oscillation region, the safety and maintainability of the bridge are enhanced, and the bridge maintenance cost after the earthquake is reduced.

Description

technical field [0001] The invention relates to the technical field of anti-seismic design of bridges, in particular to a design method of a buffer energy-dissipating anti-drop beam device for bridges. Background technique [0002] When an earthquake occurs, a large amount of energy will be input to the bridge structure, which will cause excessive deformation of the bridge and even collapse. In order to protect the bridge from serious damage during the earthquake, shock absorbers and isolation devices are usually installed to reduce the seismic force and adjust the seismic force. The distribution among the substructures makes the force distribution of the whole system more reasonable, avoids damage to the bridge structure caused by earthquakes, and ensures the safety of the bridge during earthquakes. [0003] Vibration isolation bearings mainly include lead core rubber vibration isolation bearings, high damping rubber vibration isolation bearings and friction pendulum vibrat...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the design method of the existing anti-fall beam device does not fully consider the actual needs, resulting in poor buffering effect of the anti-fall beam device, unable to participate in energy consumption,

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