Horizontal top pipe ground treatment construction method

Abstract

Disclosed is a method for processing horizontal pipe jacking foundation, which adopts the measures of digging well, determining the jacking points of the pipe jacking and the axes of the pipe jacking, installing guide rails, selecting oil cylinders, grouting, detecting, etc. The method has the advantages that: when the construction of the upper structure is finished and the surrounding buildings are too dense to have the conditions of construction sites, the horizontal pipe jacking method can be adopted to avoid the disadvantages. The method implants steel pipes with high deformation modulus on the basis of the existing buildings to form a horizontal enhanced body and ensures that the soil and the reinforcement materials are integrated by making use of the friction force generated between the foundation soil and the tie bars (steel pipes) so as to reduce global deformation and enhance overall stability; meanwhile, cantilever parts at the two ends can extend the foundation area of buildings and reduce basement additional pressure. A composite foundation is formed by pressure grouting towards the surrounding foundation soil by the steel pipes implanted, thereby improving the bearing capacity of the foundation soil, reducing the compression deformation of the foundation soil and fulfilling the purpose of improving the performance of the foundation soil under the basement.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a horizontal pipe jacking foundation treatment method. Background technique [0002] At present, the requirements for foundation settlement of buildings are becoming more and more stringent, especially when the superstructure construction is completed or uneven settlement or excessive settlement occurs during use, foundation treatment is required, and now commonly used vertical compression Various components are used to improve the bearing capacity of the foundation, such as steel pipe static pressure piles, anchor static pressure piles, cast-in-situ piles, tree root piles and other dragging and replacement methods. When limited by site conditions, conventional methods are not suitable for processing. Contents of the invention [0003] The purpose of the present invention is to develop a solution to the problem of uneven settlement or excessive settlement of the b...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to develop a solution to the problem of uneven settlement or excessive settlement of the building foundation. When it is not suitable to use conventional methods to deal with it, it adopts fusion pipe jacking and soil composite material reinforcement and grouting to form a solid foundation in the space below the foundation. A horizontal pipe jacking foundation treatment method that expands the foundation area and effectively improves the foundation soil with a space bracket to prevent and control ground subsidence