Construction method of weight-balanced barricade with pile foundation and trimmer beam

Abstract

The invention relates to a construction method of a weight-balanced barricade with a pile foundation and a trimmer beam and belongs to the technical field of construction of weight-balanced barricadeswith pile foundations and trimmer beams. A pile hole is constructed by adopting a drilling process by a rotary excavating wet process to prevent quality accidents such as hole collapse and shrinkagecavity. When a reinforcement cage is hoisted, two point hoisting is adopted, so that deformation of the reinforcement cage can be prevented effectively. After a guide pipe is mounted, the hole is cleaned again by means of the guide pipe, so that the later pouring quality can be guaranteed effectively. In trimmer beam construction, the pile foundation and the trimmer beam are integrally connected conveniently by means of a pile head ringing construction process, and the reinforcement cage at the top end of the pile foundation is inserted into the trimmer beam. In weight-balanced barricade construction, a triple filter structure is formed by a gravel layer, a sand filter layer and geotechnical filter cloth, so that piping and soil flow can be prevented effectively. In addition, soft permeable pipes are arranged along the length direction of the weight-balanced barricade to form a longitudinal draining structure, so that the drainage effect is further improved.

Description

technical field [0001] The invention relates to a construction method of a pile foundation joist counterweight type retaining wall, and belongs to the technical field of pile foundation joist counterweight type retaining wall construction. Background technique [0002] The pile-based joist counterweight retaining wall has low requirements on the bearing capacity of the foundation and has good slope closing effect, so it is widely used in slope subgrades. From the bottom to the top, the pile foundation joist counterweight retaining wall includes three parts: pile foundation, joist, and counterweight retaining wall in turn, and the whole adopts reinforced concrete structure. During construction, the drilling depth is often deep, and the construction is difficult. Once the construction is not properly controlled, it is easy to cause quality accidents such as collapsed holes and shrinkage cavities. Due to the deep pile holes, correspondingly, the length of the reinforcement cag...

AI Technical Summary

Problems solved by technology

The drainage structure has the following disadvantages: the structure of the filter layer is relatively simple, which may easily lead to the occurrence of piping and soil flow; lack of vertical drainage structure, the drainage effect is not good

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