Bridge prefabricated may reset energy dissipation anti-seismic check blocks

Abstract

The invention relates to a bridge anti-seismic chock block invention field, and specifically relates to a bridge prefabricated may reset energy dissipation anti-seismic check blocks. The device comprises a back plate, a front plate, a U-shaped plate, a connecting rod, a spring, a soft steel, a bolt, a gasket, a stiffening rib, a bolt hole, a track; the front plate back plate consists of a plurality of sleeved with a spring, the connecting rod and the front plate are welded, the other end of the connecting rod passes through the corresponding hole on the back plate through a bolt after the backing plate at the limit connecting rod is pulled out of the back plate, the left side and the right side plate of the U-shaped plate is provided with a plurality of bolt holes, the baffle block throughthe bolt connected to the cover beam, and this connection can be fabricated connection mobility. According to the device, compared with the traditional stop block, the structure is simple, the stressis clear, the conventional check block and a main beam of the rigid collision into flexible collision, slowing down the seismic action on the main beam and the baffle block, reducing the impact of the stop block and the local damage of the main beam.

Description

technical field [0001] The present invention relates to the field of invention of bridge anti-seismic stoppers, in particular to a bridge assembly type resettable energy consumption anti-seismic stopper. Background technique [0002] my country is located in the middle of the Eurasian seismic belt and the Pacific seismic belt, and is an earthquake-prone country. As a key project of transportation, bridge plays an extremely important role in earthquake relief. Once a bridge is damaged, it will not only require huge social resources to repair, reinforce and even rebuild, but more importantly, it may cause interruption of transportation and delay in post-earthquake relief work, resulting in huge economic losses and negative social impacts . Reasonable seismic design of bridges plays an extremely important role in reducing its earthquake damage. [0003] As an important component of bridge anti-seismic, the stopper is usually set on the top of the bridge pier cover beam, whic...

AI Technical Summary

Problems solved by technology

Conventional stoppers are mostly solid reinforced concrete blocks with rectangular or trapezoidal cross-sections, which have high rigidity and generate a large impact force when colliding with the main beam, resulting in local damage to the stopper and the main beam, and even transmit the impact force to the substructure. damage to substructure

In addition, it is difficult to provide sufficient restoring force after the block is damaged, which will easily cause large residual deformation of the main girder, increase the difficulty of bridge repair, and even cause the beam to fall, and the block often faces the problem of difficult repair after damage

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