Assessment of tunnel face stability subjected to an adjacent tunnel
This paper conducts a reliability assessment of the tunnel face stability induced by an adjacent tunnel under incomplete information. The evaluation indicator in this study is the limit support pressure (LSP) for the tunnel excavation face, which is first determined through a detailed finite element...
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sg-ntu-dr.10356-1611192022-08-16T05:58:43Z Assessment of tunnel face stability subjected to an adjacent tunnel Feng, Liuyang Zhang, Limao School of Civil and Environmental Engineering Engineering::Civil engineering Limit Support Pressure Copula Function This paper conducts a reliability assessment of the tunnel face stability induced by an adjacent tunnel under incomplete information. The evaluation indicator in this study is the limit support pressure (LSP) for the tunnel excavation face, which is first determined through a detailed finite element analysis. Relying on the numerical results, a hybrid particle swarm optimization-neural network (PSO-NN) is developed to construct the meta-model for LSP. This study develops a framework of Monte Carlo simulation combing with the trivariate copula analysis of the cohesive strength, Poisson ratio, and internal friction angle, to assess the probability distribution of LSP with incomplete information. This study proposes an index α greater than 1.0, to quantify the copula's effect in forty-six illustrative cases. Finally, this paper examines the reliability of different existing formulas of LSP in the tunneling excavation procedure. Rankine and Terzaghi's formulas show a higher reliability value above 0.8. Furthermore, this study proposes a new safety factor for engineering design considering the uncertainties and copula's effect. Through further examining the performance of the new safety factor based on the Rankine and Terzaghi approaches, this study proposes a new procedure to determine LSP for a safe and efficient engineering design practice. Ministry of Education (MOE) Nanyang Technological University The Ministry of Education Tier 1 Grant, Singapore (No. 04MNP000279C120) and the Start-Up Grant at Nanyang Technological University, Singapore (No. 04INS000423C120) are acknowledged for their financial support of this research. 2022-08-16T05:58:43Z 2022-08-16T05:58:43Z 2021 Journal Article Feng, L. & Zhang, L. (2021). Assessment of tunnel face stability subjected to an adjacent tunnel. Reliability Engineering and System Safety, 205, 107228-. https://dx.doi.org/10.1016/j.ress.2020.107228 0951-8320 https://hdl.handle.net/10356/161119 10.1016/j.ress.2020.107228 2-s2.0-85091223208 205 107228 en 04MNP000279C120 04INS000423C120 Reliability Engineering and System Safety © 2020 Elsevier Ltd. All rights reserved. |
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Engineering::Civil engineering Limit Support Pressure Copula Function Feng, Liuyang Zhang, Limao Assessment of tunnel face stability subjected to an adjacent tunnel |
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This paper conducts a reliability assessment of the tunnel face stability induced by an adjacent tunnel under incomplete information. The evaluation indicator in this study is the limit support pressure (LSP) for the tunnel excavation face, which is first determined through a detailed finite element analysis. Relying on the numerical results, a hybrid particle swarm optimization-neural network (PSO-NN) is developed to construct the meta-model for LSP. This study develops a framework of Monte Carlo simulation combing with the trivariate copula analysis of the cohesive strength, Poisson ratio, and internal friction angle, to assess the probability distribution of LSP with incomplete information. This study proposes an index α greater than 1.0, to quantify the copula's effect in forty-six illustrative cases. Finally, this paper examines the reliability of different existing formulas of LSP in the tunneling excavation procedure. Rankine and Terzaghi's formulas show a higher reliability value above 0.8. Furthermore, this study proposes a new safety factor for engineering design considering the uncertainties and copula's effect. Through further examining the performance of the new safety factor based on the Rankine and Terzaghi approaches, this study proposes a new procedure to determine LSP for a safe and efficient engineering design practice. |
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School of Civil and Environmental Engineering |
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School of Civil and Environmental Engineering Feng, Liuyang Zhang, Limao |
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Article |
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Feng, Liuyang Zhang, Limao |
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Feng, Liuyang |
title |
Assessment of tunnel face stability subjected to an adjacent tunnel |
title_short |
Assessment of tunnel face stability subjected to an adjacent tunnel |
title_full |
Assessment of tunnel face stability subjected to an adjacent tunnel |
title_fullStr |
Assessment of tunnel face stability subjected to an adjacent tunnel |
title_full_unstemmed |
Assessment of tunnel face stability subjected to an adjacent tunnel |
title_sort |
assessment of tunnel face stability subjected to an adjacent tunnel |
publishDate |
2022 |
url |
https://hdl.handle.net/10356/161119 |
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1743119470150287360 |