Multi-buffering reset bridge anti-seismic device

Abstract

The invention relates to the technical field of bridge earthquake prevention, in particular to a multi-buffering reset device which comprises steel corbels, combined connecting steel, rectangular carbon steel, steel springs, hollow single-opening cylindrical steel, circular ring carbon steel, vertical high-performance buffering blocks, supporting steel springs, annular composite damping blocks, carbon steel balls and carbon steel ball connecting steel. The interior of the cylindrical steel is connected with the carbon steel and the annular composite damping block through the steel spring and the carbon steel ball connecting steel, the exterior of the cylindrical steel is connected with the rectangular carbon steel through the steel spring, and the lower portion of the cylindrical steel is connected with the supporting steel spring fixed to the vertical high-performance buffer block through the carbon steel ball connecting steel. The damage of the bridge in the longitudinal direction, the transverse direction and the vertical direction is within an acceptable range, earthquake energy in the three directions is limited and consumed, and no damage is caused to the bridge piers.

Description

technical field [0001] The invention relates to the field of bridge anti-seismic technology, in particular to a multi-buffering reset bridge anti-seismic device. Background technique [0002] The current development trend of our country is: my country's highway system is constantly improving, and in order to cope with the special environment and protect the environment along the highway, save some land resources and improve the utilization of space, bridges have become a necessary choice for development. In recent years, the demand for bridges in road construction will become more and more huge, and the requirements for bridges will also increase. In addition, because some areas of our country are located in the volcanic seismic belt around the Pacific Ocean and the Eurasian seismic belt, there is a high incidence of earthquakes. In the region, once an earthquake occurs, damage to bridges will not only cause huge economic losses, but also cause road breaks to paralyze traffi...

AI Technical Summary

Problems solved by technology

In recent years, the demand for bridges in road construction will become more and more huge, and the requirements for bridges will also increase. In addition, because some areas of our country are located in the volcanic seismic belt around the Pacific Ocean and the Eurasian seismic belt, there is a high incidence of earthquakes. In the region, once an earthquake occurs, the damage to the bridge will not only cause huge economic losses, but also cause the road to be broken and traffic paralyzed, and will suffer greater indirect losses

Based on this situation, it is extremely necessary to carry out research on bridge anti-seismic, shock-absorbing technology and devices. After observation and research on bridges subjected to earthquakes, it is found that the damage of bridges under earthquakes mainly includes the following types: bridges and movable supports The large relative displacement of the seat leads to damage to the support, and the large displacement between the beam body and the pier causes the bridge to be damaged along the bridge or across the bridge. For bridges with expansion joints, the expansion joints at both ends The damage of the main body of the bridge caused by the direct collision of the beam body and the effect of the collision force is transmitted to the bottom of the pier due to the collision, which causes damage to the bottom of the bridge and also leads to the expansion of the expansion joint

There will be many kinds of damage on the bridge of the earthquake, which will make the repair of the bridge very difficult. When a huge earthquake occurs, or the vertical protection mechanism of the bridge is not in place, the upper beam will be detached from the support, which will not only cause the bridge to warp bending damage, it will also cause severe vertical collision between the support and the beam, resulting in damage to both

[0003] The current mainstream seismic design scheme for bridges is to set two reinforced concrete blocks in the direction of the bridge to limit the displacement of the bridge in the direction of the bridge during the earthquake, but this design ignores the relative displacement of the bridge and the movable support The resulting damage to the bearing, the rigid collision between the bridge and the reinforced concrete block will cause the collision force to be transmitted to the bridge pier and cause damage to the pier, etc. The displacement and force of the bridge caused by the earthquake are complex and changeable, and there is no way to guarantee the bridge if only one situation is considered. The main body can maintain relative integrity during earthquakes

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