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Steel pipe roof jacking construction method

A construction method and technology of steel pipes, which are applied in artificial islands, water conservancy projects, infrastructure projects, etc., can solve problems such as inability to adapt to the requirements of large-section tunnels in buildings, and achieve the effects of reduced surface settlement, safe construction, and small environmental impact.

Inactive Publication Date: 2006-07-12
SHANGHAI URBAN CONSTRUCTION MUNICIPAL ENGINEERING (GROUP) CO LTD
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Problems solved by technology

[0002] As people pay more attention to the environment, the current non-excavation construction technology has been developed rapidly. In the non-excavation technology, one is to directly construct an underground structure, such as the typical shield method; the other is to use support technology, and then build underground structures, such as the construction of the pipe shed support method, using non-full-length anchors with a certain inclination angle, supplemented by grouting measures to form the pipe shed, this support method is usually used in better strata, for Soft soil strata are not suitable. Therefore, for non-excavation engineering in soft soil strata, only the former method of directly forming underground structures can be used. Insufficient, can not adapt to the requirements of large section tunnels in underground buildings

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  • Steel pipe roof jacking construction method
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  • Steel pipe roof jacking construction method

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Embodiment Construction

[0037] Take the construction of an overpass tunnel under a certain road in a certain city as an example. The tunnel is located in a soft soil stratum in a certain city. The surface environment protection requirements are strict, and it is a large-section underground project. It is constructed by the pipe curtain box culvert jacking method. 34.2 meters x 7.85 meters, the pipe curtain section is about 125 meters long, and 80 φ970 steel pipes are connected through locks to form an enclosure structure with a zigzag cross section. The specific implementation steps are as follows:

[0038] 1. Excavate two working wells 1 and 2 on both sides of the proposed pipe curtain. The project is in a north-south direction, with the departure well 2 on the north side and the receiving well 1 on the south side. The details are as follows: Firstly, the diaphragm wall 4 of the working well is constructed, and an underground diaphragm wall with a thickness of 800mm is used as the enclosure structur...

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Abstract

The invention relates to a method for constructing steel tube screen feeding, belonging underground construction technique. It is characterized in the sequence of feeding steel tube screen: mounting device, operation training, stopping water, selecting the type of steel tube screen clamp. The first one fed into steel tubes is hinged steel tube, whose end face has three-section transition steel tube with steel draw rod; the steel tubes are connected via clamp to form square section; in the process, the sedimentation condition of earth surface should be detected and controlled all the time. The invention can significantly reduce the sedimentation, with little effect on the environment and safe operation. The invention can apply the construction on the soft ground near-surface large-section subway.

Description

Technical field: [0001] The utility model belongs to the technical field of underground construction, specifically a non-excavation support technology for underground construction. Background technique: [0002] As people pay more attention to the environment, the current non-excavation construction technology has been developed rapidly. In the non-excavation technology, one is to directly construct an underground structure, such as the typical shield method; the other is to use support technology, and then build underground structures, such as the construction of the pipe shed support method, using non-full-length anchors with a certain inclination angle, supplemented by grouting measures to form the pipe shed, this support method is usually used in better strata, for Soft soil strata are not suitable. Therefore, for non-excavation engineering in soft soil strata, only the former method of directly forming underground structures can be used. Insufficient, can not adapt to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D29/05
Inventor 周松葛金科杨俊龙赵国强杨光辉
Owner SHANGHAI URBAN CONSTRUCTION MUNICIPAL ENGINEERING (GROUP) CO LTD
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