Special earthquake isolation and damping support seat for railways and bridges

Abstract

The invention discloses a special earthquake isolation and damping support seat which is suitable for railways and bridges and comprises a lead core lamination rubber support seat and an X-shaped mild steel damper, wherein the X-shaped mild steel damper consists of more than three X-shaped mild steel damper single sheets which are sequentially parallel and is arranged at the left side and the right side of the lead core lamination rubber support seat, and the upper end and the lower end of both sides of the X-shaped mild steel damper are respectively fixed on an upper connecting plate and a lower connecting plate of the lead core lamination rubber support seat with high-strength bolts. The special earthquake isolation and damping support seat disclosed by the invention can increase the initial rigidity, enhance the yield strength, efficiently limit displacement of the bridge during small earthquake and middle earthquake, ensure the safety of train running and fulfill the function of better earthquake isolation and damping during large earthquake.

Description

technical field [0001] [0002] The invention relates to a combined vibration-isolation bearing, in particular to a special vibration-isolation and vibration-absorbing bearing suitable for railways and bridges. Background technique [0003] The destruction of bridges in the earthquake will lead to traffic interruption, which will not only affect people's normal life and economic operation, causing serious economic losses, but also seriously affect the disaster relief work after the earthquake, making it impossible for people to evacuate safely and smoothly, and hindering the movement to the disaster area. Emergency transport of rescue personnel and relief materials, thus exacerbating the earthquake disaster. Therefore, in the field of bridge anti-seismic research, it is the main subject of bridge anti-seismic research to seek more effective anti-seismic means to resist the damage to structures caused by earthquakes. Since modern times, seismic isolation technology has bee...

AI Technical Summary

Problems solved by technology

Especially in contemporary China, where trains are constantly speeding up, the trains have stricter requirements on the smoothness of the track. The lead-core rubber isolation bearing obtained according to the traditional isolation design method, due to the smaller yield load of the bearing, is not suitable for small earthquakes. During a moderate earthquake, the seismic isolation bearing enters the yield stage, and the deformation develops rapidly after yielding, which will cause track deformation and cannot guarantee the safety of vehicles running on the bridge when a small or medium earthquake occurs

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