Steel structure bridge anti-overturning structure

Abstract

The invention discloses a steel structure bridge anti-overturning structure. A reinforcing steel bar or an anchor bolt backing ring is arranged at a top of a concrete abutment cap or a pier cap; a lower part of the reinforcing steel bar or an anchor bolt penetrates through the reinforcing steel bar or the anchor bolt backing ring and then is buried into the concrete abutment cap or the pier cap; an anchoring end plate is arranged above a steel structure cross beam bottom plate; and an anchoring base plate is arranged on the anchoring end plate, threads are arranged at the upper end of the reinforcing steel bar or the anchor bolt, after the reinforcing steel bar or the anchor bolt penetrates through the steel structure beam bottom plate, the anchoring end plate and the anchoring base plate,the threaded part at the upper end of the reinforcing steel bar or the anchor bolt is exposed above the anchoring base plate, and the anchoring nut is screwed on the threads at the upper end of the reinforcing steel bar or the anchor bolt to limit overall torsion of a bridge. An anti-pulling anchor bolt structure is simple in structure and economical in manufacturing cost, does not influence support replacement, can adapt to longitudinal temperature deformation of the bridge, and can effectively avoid transverse overturning instability of a steel structure bridge on the premise that structural damage does not occur to a pier stud of a beam body through a reasonable design.

Description

technical field [0001] The invention relates to the technical field of civil construction of steel structure bridges, in particular to an anti-overturning structure of steel structure bridges, which is used to solve the problem of lateral overturning instability after the support of the steel structure bridge is empty. Background technique [0002] In recent years, steel structures have been used more and more in highways and municipal bridges with small and medium spans. Bridge lateral overturning instability until collapse accidents have occurred one after another, which has become an important form of bridge failure, and the damage consequences are serious. The failure process of a bridge overturning accident is generally as follows: the one-way compression bearing is out of the normal compression state, the support system of the upper structure no longer provides effective constraints, the torsional deformation of the upper structure tends to diverge, and the lateral ins...

AI Technical Summary

Problems solved by technology

If the weight section is lengthened, it will be unfavorable to the steel structure, and internal reinforcement needs to be provided, and it is not suitable for steel plate girders

[0008] 3. According to the patent novelty search, there are anti-overturning structures applied to concrete cast-in-place continuous beams and steel structure pedestrian bridges, which are not suitable for small and medium-span highways or municipal vehicle steel structure bridges

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