Combined anti-seismic system and combined anti-seismic bridge

Abstract

The invention provides a combined anti-seismic system and a combined anti-seismic bridge, and relates to the technical field of anti-seismic bridges. The combined anti-seismic bridge comprises a pier, a transportation pipeline, and a combined anti-seismic system. The combined anti-seismic system comprises a first anti-seismic assembly and a second anti-seismic assembly. The first anti-seismic assembly comprises an anti-collision stop block, a limiting stop block, and a first seismic isolation bearing. The anti-collision stop block is arranged on a coping. The limiting stop block is fixedly connected to the bottom of a girder. One end of the first seismic isolation bearing is fixedly connected to the coping while the other end is connected against the bottom of the girder. The second anti-seismic assembly comprises a second seismic isolation bearing and a tension-compression type damper. The second seismic isolation bearing is fixedly arranged on the part, close to the stop block, of the coping, and the tension-compression type damper is fixedly arranged on the second seismic isolation bearing. Compared to the prior art, the combined anti-seismic system provided in the invention can effectively absorb energy produced by bridge vibration or swing and prevent girder falling of the bridge or bridge damage caused by collision, thereby effectively protecting the bridge.

Description

technical field [0001] The invention relates to the technical field of anti-seismic bridges, in particular to a combined anti-seismic system and a combined anti-seismic bridge. Background technique [0002] The pipe corridor bridge is used to carry facilities such as gas, sewage, water supply, electricity, and communication across valleys and rivers. The bridge needs to have passages for installation, maintenance, and visits, and it must also bear dynamic loads such as vehicles and crowds. It is a key project of the lifeline. The seismic fortification of the pipe corridor bridge located in the earthquake area is particularly important. It not only ensures the structural safety of the lifeline project itself, but also avoids secondary disasters caused by the earthquake, which is of great significance for earthquake relief. [0003] Long-span transport trusses are usually installed on bridge piers, and sometimes the bridge piers are located in high-intensity earthquake areas i...

AI Technical Summary

Problems solved by technology

In the existing anti-seismic technology of bridges, shock-absorbing and isolating bearings and anti-drop beam devices are usually used to carry out bridge anti-seismic. The inventors found that the use of traditional anti-vibrating and isolating supports will cause excessive displacement of the superstructure. Some anti-drop beam devices are difficult to play a role in the collision between bridges

It can be seen that the traditional anti-seismic facilities obviously cannot meet the anti-seismic requirements of the pipe covered bridge

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