Anti-collision guardrail and construction method thereof

Abstract

The invention discloses an anti-collision guardrail, and belongs to the technical field of bridge engineering. The anti-collision guardrail comprises a guardrail body, a bridge deck and a connecting structure. A multi-step structure is arranged on the upper surface of the bridge deck slab, a plurality of connecting structures are embedded in the step face of the connecting step at intervals, and the lower end face of the guardrail is matched with the multi-step structure of the bridge deck slab and connected with the multi-step structure of the bridge deck slab through the connecting structures. The connecting structure comprises a screw rod, a sleeve and an eccentric nut, and the sleeve is vertically embedded in the step surface of the connecting step; the lower end of the screw penetrates through and is connected to the bottom closed end of the sleeve, and the upper end of the screw penetrates through the lower end face of the guardrail and is fixedly connected with the guardrail. In the device, the guardrails and the bridge deck are connected through multi-step matching and connecting structures, so that the connecting strength of the guardrails and the bridge deck is ensured, and the shear capacity is improved; the sleeve and the eccentric nut reduce the requirement for the precision of the embedded part, and the controllability of the installation precision is improved. The whole device is simple in process, high in applicability, wide in application and low in manufacturing cost.

Description

technical field [0001] The invention relates to the technical field of bridge engineering, in particular to an anti-collision guardrail and a construction method thereof. Background technique [0002] At present, the concept of rapid prefabricated green bridge construction has made great progress, and prefabricated bridge structures have developed rapidly. The existing prefabricated concrete collision guardrail connection methods have the following deficiencies: First, the construction process of the connection parts of some prefabricated concrete collision guardrails still adopts the method of cast-in-place concrete connection, the construction process is relatively complicated, and the construction site is still There is a lot of pollution; secondly, the connection parts of some prefabricated concrete anti-collision guardrails are welded, the on-site welding workload is large, and the welding quality is difficult to control; thirdly, the prefabricated installation accuracy...

AI Technical Summary

Problems solved by technology

The existing prefabricated concrete anti-collision barrier connection methods have the following deficiencies: First, the construction technology of part of the prefabricated prefabricated concrete anti-collision barrier connection parts still adopts the method of cast-in-place concrete connection, the construction process is relatively complicated, and the construction site is still There is a lot of pollution; secondly, some prefabricated concrete crash barriers are connected by welding, and the on-site welding workload is large, and the welding quality is difficult to control; thirdly, the prefabricated installation accuracy requirements of some prefabricated concrete crash barriers high, it is difficult to adjust the control; finally, the durability of the connection structure of the partially prefabricated concrete crash barrier is yet to be tested

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