Bridge foundation protection structure for abrupt slope terrain and construction method

Abstract

The invention discloses an abrupt slope terrain bridge foundation protection structure and a construction method, and the abrupt slope terrain bridge foundation protection structure comprises an enclosing wall structural body which is arranged on a side slope around a bridge pier and abutment foundation; anchoring structural bodies which are arranged at intervals in the wall surface direction of the enclosing wall structural body, and the two ends of each anchoring structural body are anchored and fixed to the enclosing wall structural body and the side slope correspondingly; lightweight concrete which is arranged in a three-dimensional space formed by the enclosing wall structural body and the side slope; a bridge pile foundation which penetrates through the lightweight concrete, and the lower portion of the bridge pile foundation enters the slope stable area; and a bridge bearing platform which is arranged at the top of the bridge pile foundation and fixedly connected with the bridge pile foundation. The construction platform formed by the enclosing wall structural body and the lightweight concrete is arranged on the side slope of the abrupt slope terrain, so that the problem that the bridge pile foundation and the bearing platform are difficult to construct is solved, and the problems that a high side slope needs to be reinforced and excavated when the bridge foundation construction platform is built through slope cutting and the engineering investment is high are solved; the problems of insufficient rigidity and difficult deformation control caused by a traditional high pile foundation bearing platform of a bridge are solved.

Description

technical field [0001] The invention relates to the technical field of bridge engineering, in particular to a protective structure and construction method for a bridge foundation on steep slope terrain. Background technique [0002] Steep slope terrain is distributed in a large number of mountainous areas. When the bridge pier foundation is set on steep slope terrain, the current common practice is to excavate the construction platform on the steep slope terrain, and carry out bridge pile foundation and cap construction on the construction platform. In order to avoid steep slope The terrain has the problem of deformation and rigidity control of the high pile cap of the bridge. Usually, the bridge pile foundation and the cap are buried in the natural slope body, which forms a large number of high slopes excavated by the foundation of the bridge pier. Due to the influence of the steep slope terrain , It is very difficult to strengthen and protect the slope by excavation, and t...

AI Technical Summary

Problems solved by technology

[0002] Steep slope terrain is distributed in a large number of mountainous areas. When the bridge pier foundation is set on steep slope terrain, the current common practice is to excavate the construction platform on the steep slope terrain, and carry out bridge pile foundation and cap construction on the construction platform. In order to avoid steep slope The terrain has the problem of deformation and rigidity control of the high pile cap of the bridge. Usually, the bridge pile foundation and the cap are buried in the natural slope body, which forms a large number of high slopes excavated by the foundation of the bridge pier. Due to the influence of the steep slope terrain , the reinforcement and protection of excavated slopes is very difficult and the investment is huge, and sometimes even high slopes cannot be reinforced when excavated, such as excavating high slopes along layers

The utility model patent with the application number CN201220446402.0 discloses a protective structure for bridges and abutments on bedding slopes. In order to meet the required protection slope width, the setting length of the reinforcement pile must be deepened, resulting in high project investment, and the construction risk and low efficiency of the reinforcement pile pile well

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