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A kind of upper buoyancy test device and test method of shield segment in surrounding rock

A technology for shield segment and buoyancy testing, which is applied in the field of shield testing, can solve problems such as inaccurate detection, and achieve the effects of solving inaccurate detection, facilitating research, and enriching detection data

Active Publication Date: 2022-07-12
TENGDA CONSTR GROUP CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a buoyancy test device and test method for a shield segment in surrounding rock, so as to solve the problem that the buoyancy test of a shield segment can only detect a single point pressure and the detection is inaccurate

Method used

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  • A kind of upper buoyancy test device and test method of shield segment in surrounding rock
  • A kind of upper buoyancy test device and test method of shield segment in surrounding rock
  • A kind of upper buoyancy test device and test method of shield segment in surrounding rock

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Embodiment Construction

[0034] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, the drawings only show some but not all structures related to the present invention.

[0035] In the description of the present invention, unless otherwise expressly specified and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between the two elements....

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Abstract

The invention belongs to the technical field of shield tunnel testing, and discloses an upper buoyancy test device and a test method for shield segments in surrounding rock. Spring dynamometer, the steel inner cylinder is set in the transparent outer cylinder and an annular building void is formed between them; the grouting pipe is movably set in the building void, and the earth pressure box is embedded and installed on the outer side wall of the steel inner cylinder , the spring dynamometer is connected to the inner side wall of the steel inner cylinder and the pressure sensor. In the invention, a transparent outer cylinder is set to simulate the shield excavation surface, a steel inner cylinder is set to simulate the shield segment, and the slurry is injected into the building gap formed by the two, so that the flow of the slurry in the building gap can be visually observed, and the slurry can be obtained. The influence range of time-varying on the rise of shield segment, thus solving the problem that the buoyancy test of shield segment can only detect single-point pressure and the detection of buoyancy is inaccurate.

Description

technical field [0001] The invention relates to the technical field of shield tunnel testing, in particular to a device and a testing method for the upper buoyancy of shield tunnel segments in surrounding rock. Background technique [0002] With the rapid development of urban traffic, the development and utilization of underground space is also increasing. The shield method is widely used in the construction of subway tunnels because of its convenient construction, low noise and fast construction speed. In engineering practice, the process of shield tunneling will disturb the surrounding soil and cause problems such as surface subsidence and uplift. If the building gap is not filled in time, the resulting stratum loss will inevitably lead to the stratum deformation and the displacement of the tunnel structure, which will cause harm to the safety of adjacent structures. [0003] Simultaneous grouting technology is currently the best way to fill the void in the building, but...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L7/02G01L19/00G01L19/08E21D9/06E21D11/08E21D11/10
CPCG01L7/02G01L19/0007G01L19/086E21D9/0607E21D11/08E21D11/10
Inventor 孙九春王悦奚晓广潘定振张冰
Owner TENGDA CONSTR GROUP CORP
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