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Structure for preventing differential settlement of shield tunnel and implementing method

A technology of shield tunneling and implementation method, which is applied in tunnels, tunnel lining, earthwork drilling, etc., can solve the problems of large-capital shield tunneling and ineffective implementation, and achieves stability, avoidance of uneven settlement, and stable connection. Effect

Active Publication Date: 2019-12-20
SOUTHWEST JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the method of grouting reinforcement costs a lot of money and is limited to the small space of the shield tunnel, so it cannot be effectively implemented in many cases

Method used

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  • Structure for preventing differential settlement of shield tunnel and implementing method
  • Structure for preventing differential settlement of shield tunnel and implementing method

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Embodiment Construction

[0026] The specific embodiments of the present invention are described below so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.

[0027] like figure 1 and figure 2 As shown, the structure to prevent the uneven settlement of the shield tunnel includes an arc-shaped bottom support segment 1 and several arc-shaped ordinary support segments, the bottom support segment 1 and several ordinary support segments are assembled into a tunnel, and the bottom support segment 1 is installed at the bottom of the tunnel, and an air bag 6 is installed on the outside...

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Abstract

The invention discloses a structure for preventing differential settlement of a shield tunnel. The structure comprises an arc bottom supporting pipe sheet and a plurality of arc ordinary supporting pipe sheets, and the bottom supporting pipe sheet and the ordinary supporting pipe sheets are spliced into a tunnel. The outer side of the bottom supporting pipe sheet is provided with an air bag, the air bag is connected with an inflation pipeline through a connector, and the inflation pipeline is connected with an inflation device arranged on the inner side of the bottom supporting pipe sheet. Theconnector is provided with an air pressure detection device. An implementing method of the structure for preventing differential settlement of the shield tunnel comprises the steps from the first step to the seventh step, since mucky clay in a sludge stratum is not stable, differential settlement of the tunnel is caused in the long-term running process, the mucky clay is fluid-like, and the supporting and floating effect can be generated to the air bag; and the air bag is arranged in the tunnel bottom sludge stratum, the air bag at the bottom of the supporting pipe sheet supports the tunnel,and through air pressure adjustment of the air bag, differential settlement of the tunnel is relieved and even avoided.

Description

technical field [0001] The invention relates to the technical field of tunnel construction, in particular to a structure and an implementation method for preventing uneven settlement of a shield tunnel. Background technique [0002] At present, with the rapid development of my country's national economy, the construction scale of geotechnical engineering and underground engineering is expanding day by day, and the requirements for foundation are getting higher and higher, and the difficulty is also increasing. Compared with the superstructure, there are more uncertain factors in the foundation, and the problems are more complicated and more difficult. The consequences of poor ground handling will be very serious. According to survey statistics, in various engineering accidents in various countries in the world, foundation problems are often the main cause of accidents. The foundation is fundamental, and its good handling is not only beneficial to building safety, but also ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/08E21F17/18
CPCE21D11/08E21F17/18
Inventor 许炜萍孙克国袁子义侯宗豪王呼佳杨朋
Owner SOUTHWEST JIAOTONG UNIV
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