Anti-overturning type bridge limiting stop block device

Abstract

The invention discloses an anti-overturning type bridge limiting stop block device which comprises an upper stop block, a lower stop block and extensible tensile steel bars, the upper stop block and the lower stop block are connected with a cast-in-place box girder and a lower pier respectively, and a gap is reserved between the upper stop block and the lower stop block; the upper ends and the lower ends of the extensible tensile steel bars are pre-buried in the upper check block and the lower check block correspondingly and connected with pre-buried steel bars of the cast-in-place box girderand pre-buried steel bars of the pier correspondingly. The anti-overturning type bridge limiting stop block device is ingenious in conception, simple, clear in stress and rapid and convenient to construct, plays a role in longitudinal and transverse earthquake resistance of a bridge, can realize anti-pulling and anti-overturning effects when the bridge overturns, and can also provide a space required by support replacement when the bridge support is replaced.

Description

technical field [0001] The invention relates to the technical field of bridge engineering, in particular to an anti-overturning type bridge limit block device. Background technique [0002] With the rapid development of urban construction in our country, the construction of infrastructure such as urban viaducts is also changing with each passing day. With the gradual improvement of infrastructure, the people's requirements for the safety of bridge construction are also getting higher and higher. The traditional bridge concrete blocks are subjected to lateral rigid collision with the support pad stone or the superstructure beam. In this process, due to the small distance between the stop block and the support pad stone or the superstructure beam body in the lateral direction, the construction space is small, and the concrete construction quality of the stop block and the pad stone or the superstructure beam body is difficult to guarantee. Moreover, the contact surface betwe...

AI Technical Summary

Problems solved by technology

Due to the small lateral distance between the block and the support pad stone or the superstructure beam body, the construction space is small, and the concrete construction quality of the contact surface between the block block and the pad stone or the superstructure beam body is difficult to guarantee.

Moreover, the contact surface between the block and the pad stone or the beam of the upper structure is small, and the force of the concrete limit block belongs to the structural form of the cantilever beam, which mainly bears the bending performance, the seismic performance is limited, and it is very prone to brittle failure, such as shearing or Broken etc.

And with the rapid development of the domestic economy, the phenomenon of vehicle overloading has become increasingly prominent, and bridge overturning accidents have also increased, while conventional bridge stops do not have the function of anti-overturning

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