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Double-layer steel sheet pile combined enclosure structure and construction method thereof

A technology of enclosure structure and construction method, which is applied in foundation structure engineering, sheet pile wall, excavation and other directions, can solve the problems of leakage instability, increased enclosure deformation, insufficient pile stiffness, etc., and achieves energy saving, The effect of reducing construction costs and saving land

Inactive Publication Date: 2019-05-21
SHANGHAI CONSTRUCTION GROUP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] When the existing steel sheet piles are used in the foundation pit support of deep underground projects, due to the insufficient rigidity of the pile body, the deformation of the enclosure increases, and there are risks such as leakage and instability.

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  • Double-layer steel sheet pile combined enclosure structure and construction method thereof
  • Double-layer steel sheet pile combined enclosure structure and construction method thereof
  • Double-layer steel sheet pile combined enclosure structure and construction method thereof

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Embodiment Construction

[0031] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that all the drawings are in a very simplified form and use imprecise scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention. For the convenience of description, the "up" and "down" described below are consistent with the directions of up and down in the drawings, but this should not be a limitation of the technical solution of the present invention.

[0032] The underground structure of the present embodiment is an example with the pipeline (ditch) project, and the foundation pit of the pipeline (ditch) project is about 7m deep, below in conjunction with Figure 1 to Figure 3 Illustrate the double-deck steel sheet pile combined enclosure structure of the present invention, it comprises:

[0033] Double-layer steel sheet pile, which is arranged ...

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Abstract

The invention discloses a double-layer steel sheet pile combined enclosure structure and a construction method thereof, relates to the technical field of geotechnical engineering design and construction, and solves the problems of enclosure deformation increase, leakage instability and other risks caused by insufficient pile body rigidity of an existing steel plate pile. The double-layer steel sheet pile combined enclosure structure comprises double layers of steel sheet piles which are arranged on the periphery of a foundation pit and are tightly attached to the axes in the width direction ofthe double layers of steel sheet piles and are arranged parallelly or symmetrically, and a combined reinforcing layer which is formed by grouting and reinforcing soil between the double layers of steel sheet piles. The construction method comprises: the outer-layer steel sheet piles and the inner-layer steel sheet piles are inserted into the periphery of the foundation pit in sequence, and then asoil body between the inner-layer steel sheet piles and the outer-layer steel sheet piles is grouted and reinforced to form the combined enclosure structure; then a foundation pit soil body is excavated in sequence, all horizontal supports are constructed until reaching the pit bottom, an underground structure is constructed, support replacing components are arranged according to design requirements, and all the horizontal supports are dismantled; underground structure construction is completed, the soil body is backfilled to the natural floor elevation, the double layers of steel sheet pilesare pulled out, and pile pulling gaps are grouted and filled.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering design and construction, in particular to a double-layer steel sheet pile composite enclosure structure and a construction method thereof. Background technique [0002] In recent years, with the continuous development and improvement of my country's urban construction, the scale of municipal infrastructure has continued to increase. As an important part of municipal infrastructure, urban pipeline (ditch) projects have also continued to expand in scale, presenting a "long, deep , big" trend. Pipeline (ditch) projects are generally concentrated in the central area of ​​the city, and the surrounding roads, pipelines, rail transit, expressways and other ground and underground facilities are dense, the environment is sensitive and complex, and the available construction space is tight and harsh. Moreover, in order to avoid affecting road traffic, The construction period requirements of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/04E02D5/04E02D19/18E02D5/06
Inventor 林巧张洁龙吴小建张竹庭颜超
Owner SHANGHAI CONSTRUCTION GROUP
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