STUDY OF TUNNEL-SOIL INTERACTION INDUCED BY TUNNELING UNDERLYING

FENG Guo-hui; XU Chang-jie; TEY Ming-wang; WU Qiong; HUANG Zhan-jun; CHENG Kang

doi:10.6052/j.issn.1000-4750.2021.10.0828

Volume 40 Issue 5

May 2023

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Engineering Mechanics > 2023 > 40(5): 59-68. > DOI: 10.6052/j.issn.1000-4750.2021.10.0828

FENG Guo-hui, XU Chang-jie, TEY Ming-wang, WU Qiong, HUANG Zhan-jun, CHENG Kang. STUDY OF TUNNEL-SOIL INTERACTION INDUCED BY TUNNELING UNDERLYING[J]. Engineering Mechanics, 2023, 40(5): 59-68. DOI: 10.6052/j.issn.1000-4750.2021.10.0828

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STUDY OF TUNNEL-SOIL INTERACTION INDUCED BY TUNNELING UNDERLYING

FENG Guo-hui^{1, 2, ,},
XU Chang-jie^{1, 2, 3,},
TEY Ming-wang^1,,
WU Qiong^4,,
HUANG Zhan-jun^5,,
CHENG Kang^{1, 6,}

1.
Research Center of Coastal and Urban Geotechnical Engineering, Zhejiang University, Hangzhou, Zhejiang 310058, China
2.
Center for Balance Architecture, Zhejiang University, Hangzhou, Zhejiang 310028, China
3.
Jiangxi Key Laboratory of Infrastructure Safety Control in Geotechnical Engineering, East China Jiaotong University, Nanchang, Jiangxi 330013, China
4.
Hangzhou Chengdong New City Construction Investment Co., Ltd., Hangzhou, Zhejiang 310000, China
5.
Nanchang Rail Transit Group Co., Ltd., Nanchang, Jiangxi 330013, China
6.
China Railway 11th Bureau Group Co., Ltd., Wuhan, Hubei 430061, China

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Received Date: October 26, 2021
Revised Date: February 26, 2022
Accepted Date: March 17, 2022
Available Online: March 17, 2022

Abstract

Abstract

Based on the condition of tunnel deformation caused by tunneling underlying, a theoretical solution is obtained to calculate the response of existing tunnels. The additional loading upon existing tunnel caused by tunneling underlying can be calculated by modified Gaussian formula. By treating the existing tunnel as Euler-Bernoulli beam lying on Kerr foundation model, the strain and stress response of the overlying tunnel can be obtained by considering the case of freedom at both ends of tunnel. Cases studies show that the solutions of the proposed method have better agreement with the centrifuge data than the existing centrifuge tests. Compared with existing theory and degraded Pasternak foundation model solution, the prediction of the proposed method is close to the measured data. Further study shows that the tunnel displacement decreases with the increment of the skew angle between two tunnels, but the tunnel bending moment increases. The displacement and bending moment of the tunnel increase approximately linearly with the volume loss. Displacement and bending moment of the tunnel decrease as the depth of new tunnel increases.
- geotechnical engineering,
- shield tunneling,
- Euler-Bernoulli beam,
- Kerr foundation model,
- degraded solution

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References (30)

References

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STUDY OF TUNNEL-SOIL INTERACTION INDUCED BY TUNNELING UNDERLYING

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