An unloading thin-walled box-shaped retaining wall supported by oblique and vertical composite steel pipe piles and its construction technology

Abstract

The invention discloses an unloading thin-walled box-shaped retaining wall supported by oblique and vertical combined steel pipe piles. The wall module of the box type includes a rear exterior wall, an exterior wall of the front side, a left exterior wall, and a right exterior wall. The relative positions of the box-shaped wall modules are provided with multiple transverse inner partition walls. The relative positions of the box-shaped wall modules are There is a longitudinal inner partition wall, and an intermediate bearing plate is provided at the relative position inside the box-shaped wall module. Unloading plate, the bottom of the box-shaped wall module is provided with a horizontally arranged raft, the bottom of the raft is provided with a number of vertically arranged vertical steel pipe piles, and the left side of the raft is provided with a number of oblique steel pipe piles module. The beneficial effect of the invention is that it can be applied to the edges of various foundation pits with different complex terrains, and has good stability and convenient construction.

Description

technical field [0001] The invention belongs to the technical field of slope and foundation pit engineering specialized in geotechnical engineering, and in particular relates to an unloading thin-walled box-shaped retaining wall supported by oblique and vertical combined steel pipe piles and a construction process. Background technique [0002] In the backfill area of ​​deep soil layer after construction, a high slope of more than ten meters is built. The traditional "panacea" support form of pile-anchor structure cannot be implemented due to constraints. Many projects adopt the form of reinforced soil retaining wall structure. However, in some specific cases, such as the design of the retaining wall with a wide bottom, it is inevitable to cross or longitudinally pass through the pressure pipes and underground corridors within the influence range below, and the specified compaction work cannot be performed. Mechanical layering and compaction will affect the friction between ...

AI Technical Summary

Problems solved by technology

However, in some specific cases, such as the design of the retaining wall with a wide bottom, it is inevitable to cross or longitudinally pass through the pressure pipes and underground corridors within the influence range below, and the specified compaction work cannot be performed. Mechanical layering and compaction will affect the friction between the filler and the ribs, which will cause the support structure to fail to achieve the expected effect or fail, and even cause damage to the protected pipelines and corridors below

In view of the above reasons, it is necessary to develop an unloading box-type retaining wall supported by oblique and vertical steel pipe piles and a construction method to solve the problem of large earth pressure and poor anchoring effect caused by poor compaction of the backfill of the retaining wall. Poor problems, and anti-slip, anti-overturning effect, and can effectively protect the important pipelines and corridors below

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