Vertically-controlled grouting steel perforated pipe pile foundation supporting beam retaining wall structure and construction method thereof

Abstract

The invention relates to a vertically-controlled grouting steel perforated pipe pile foundation supporting beam retaining wall structure and a construction method thereof and belongs to the technical field of capital construction. The vertically-controlled grouting steel perforated pipe pile foundation supporting beam retaining wall structure comprises a steel perforated pipe drill hole formed in a slope, the steel perforated pipe drill hole is internally provided with a steel perforated pipe, and the steel perforated pipe is spirally provided with a plurality of secondary grouting holes; the bottom of the steel perforated pipe is provided with a blocking plate, and the side, away from the steel perforated pipe, of the blocking plate is fixedly connected with a triangular supporting frame; the steel perforated pipe drill hole is internally provided with a grouting body, a pipe opening of the steel perforated pipe is provided with a sealing cover, the position of the pipe opening of the steel perforated pipe is provided with a concrete supporting beam, the concrete supporting beam is internally provided with a steel bar structure, the steel bar structure is welded to the steel perforated pipe, and the concrete supporting beam is provided with a retaining wall. By means of the vertically-controlled grouting steel perforated pipe pile foundation supporting beam retaining wall structure, the technical problems that a traditional pile foundation technology is high in construction condition requirement, low in manual hole digging speed and high in comprehensive cost are solved, and the vertically-controlled grouting steel perforated pipe pile foundation supporting beam retaining wall structure is widely applied to slope reinforcement engineering, such as roads, railways, mines and municipal administration.

Description

technical field

[0001] The invention relates to the technical field of infrastructure construction, in particular to a vertically controlled grouting steel flower pipe pile foundation joist retaining wall structure and a construction method thereof, which is suitable for slope reinforcement projects of roads, railways, mines, municipalities, etc. Background technique

[0002] The section of the pile foundation in the traditional pile joist retaining wall is large (the pile diameter is generally greater than 1m). If it is a round pile, a large drilling rig is required for construction, and the hillside area often does not have construction conditions, and large-scale mechanical construction is easy. The surrounding rock and soil cause further disturbance, resulting in a decrease in the strength of the rock and soil around the pile; if it is a square pile, it is necessary to manually dig holes to form the pile, which is slow and expensive, and the depth of the embedded bedrock ...

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