An anti-overturning bridge limit stop device

Abstract

The invention discloses an anti-overturning bridge limit stop device, which comprises an upper stop, a lower stop and an extensible tensile steel bar. The upper stop and the lower stop are respectively connected with a cast-in-place box girder and a lower bridge pier. There is a gap between the upper block and the lower block; the upper and lower ends of the stretchable tensile steel bars are pre-buried in the upper and lower blocks, respectively, and the upper and lower ends of the stretchable tensile steel bars are respectively The embedded steel bars of the cast box girder are connected with the embedded steel bars of the bridge piers. The invention has the advantages of ingenious conception, simple bearing, clear force, quick and convenient construction, and not only plays an effect on the longitudinal and lateral earthquake resistance of the bridge, but also provides the effects of anti-pulling and anti-overturning when the bridge overturns. When the bridge bearing is replaced, the space required for bearing replacement is provided.

Description

technical field [0001] The invention relates to the technical field of bridge engineering, in particular to an anti-overturning bridge limiting block device. Background technique [0002] With the rapid development of urban construction in my country, the construction of urban viaducts and other infrastructure is also changing with each passing day. With the gradual improvement of infrastructure, people's requirements for the safety of bridge construction are getting higher and higher. The traditional bridge concrete blocks all have a lateral rigid collision with the bearing pads or the superstructure beams. Due to the small distance between the block and the support cushion stone or the superstructure beam body in the lateral direction, the construction space is small, and the concrete construction quality of the contact surface between the block and the cushion stone or the superstructure beam body is difficult to ensure. In addition, the contact surface between the bloc...

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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