Indoor model testing apparatus for analyzing influences of shield tunnel grouting construction on adjacent pile foundations

An indoor model and shield tunnel technology, which is applied to the testing of machines/structural components, measuring devices, instruments, etc., can solve problems such as large amount of calculation, wrong monitoring information, damage of on-site embedded test components, etc., and achieve strong scalability , extensive effect
CN103558044AInactive Publication Date: 2014-02-05UNIV OF SHANGHAI FOR SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
UNIV OF SHANGHAI FOR SCI & TECH
Publication Date
2014-02-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to an indoor model testing apparatus for analyzing influences of shield tunnel grouting construction on adjacent pile foundations. The indoor model testing apparatus comprises a model box, a tunnel grouting construction simulator, a tunnel lining model and a pile foundation model. The model box is filled with sandy soil mass, the tunnel lining model comprises longitudinally-segmented aluminum alloy hollow pipes and is placed in the left half part of the model box, and lining segments are separated by annular thin rubber plates; the pile foundation model is placed in the right half part of the model box and vertical to the tunnel lining model; a displacement meter support is fixed to the top surface of the model box; multiple displacement meters are respectively fixed to the corresponding sandy soil mass and the surfaces of piled raft foundations of the pile foundation model through the displacement meter support; the tunnel grouting construction simulator comprises a latex film surrounding the periphery of the tunnel lining model and an annular liquid cavity formed between the tunnel model and the latex film, the annular liquid cavity is filled with grouting liquid, one end of the annular liquid cavity is connected with a liquid injection guide pipe provided with a liquid injection solenoid valve, and a liquid discharge guide pipe provided with a liquid discharge solenoid valve is arranged at the other end of the annular liquid cavity in the horizontal direction.
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Description

technical field

[0001] The invention relates to shield tunnel grouting construction in urban underground space development and underground construction engineering, in particular to an indoor model test device for the influence of shield tunnel grouting construction on adjacent pile foundations. Background technique

[0002] With the further development of urbanization in our country, urban underground rail transit, as the most convenient and efficient urban transportation system, has also developed rapidly. In particular, the construction of urban subway tunnels with the shield method is more and more widely used in the construction of subway tunnels because of its high degree of construction automation and the advantages of less impact on ground traffic. The grouting behavior is the process of injecting liquid concrete into the gap formed between the lining of the shield tunnel and the surrounding soil, so as to control the deformation of the soil and improve the integrit...

Claims

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