A Reinforcing Method for Reducing Uneven Settlement of Buildings with Shallow Strip Foundation

Abstract

The invention discloses a reinforcement method for reducing differential settlement of a strip-shaped shallow foundation house. A strip-shaped shallow foundation of a house is replaced to a box raft deep foundation for reinforcing a settled house; and based on reinforcement, a bored pile and a pile top longitudinal beam integrally cast with the foundation are constructed for realizing the jacking rectification of the house. The reinforcement method is scientific and reasonable in planning, high in reliability, simple in construction structure, liable to realize the process, excellent in mechanical performances of a constructed house structure and capable of effectively reducing differential settlement of the house.

Description

technical field [0001] The invention belongs to the technical field of civil engineering, in particular to a reinforcement method for reducing the uneven settlement of strip-shaped shallow foundation houses. Background technique [0002] In this technical field, although there are many studies on the characteristics of the surrounding site deformation caused by the excavation of deep foundation pits in construction projects, and the impact on surrounding pipelines and adjacent buildings, such as the construction of subway stations, etc., for deep and weak sites, ground connections There are still relatively few studies on the impact of wall trenching construction and foundation pit earthwork excavation on multi-storey buildings adjacent to shallow foundations. Shallow foundation buildings with brick-concrete structure have poor tensile performance, while the foundations are often brick strip foundations, which have poor self-regulation ability and are extremely sensitive to ...

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Problems solved by technology

[0002] In this technical field, although there are many studies on the characteristics of the surrounding site deformation caused by the excavation of deep foundation pits in construction projects, and the impact on surrounding pipelines and adjacent buildings, such as the construction of subway stations, etc., for deep and weak sites, ground connections There are still relatively few studies on the impact of wall trenching construction and foundation pit earthwork excavation on multi-storey buildings adjacent to shallow foundations.

Shallow foundation buildings with brick-concrete structure have poor tensile performance, and the foundation is often a brick strip foundation, which has poor self-adjustment ability and is extremely sensitive to foundation pit deformation, prone to uneven settlement and cracks in the structure

Judging from the previous construction process of subway stations, when the trenching construction and earthwork excavation of the ground connection wall are carried out on the site with deep soft soil layers or interlayers of cohesive soil and sandy soil in the river floodplain, due to the relatively deep excavation of the foundation pit Deep, saturated soft soil has the characteristics of large void ratio and compressibility, low shear strength, high sensitivity, and is soft plastic or flow plastic. Construction is often accompanied by excessive settlement deformation of surrounding soil and buildings, which seriously affects The safety of the environment has become a difficult problem in the engineering field. It is urgent to take effective measures to strengthen the foundation of the house and reduce the uneven settlement of the house, so as to provide reference for the construction of similar projects in the future.

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