Study on Transverse Deformation Characteristics of a Shield Tunnel under Earth Pressure by Refined Finite Element Analyses
We establish an elaborate numerical model with which to investigate the deformation characteristics of segmental lining. The numerical model contains reinforcement and connecting bolts that previous numerical studies have generally neglected. We validated the model parameters using a full-scale mode...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-09-01
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| Series: | Symmetry |
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| Online Access: | https://www.mdpi.com/2073-8994/14/10/2030 |
| _version_ | 1797469845202141184 |
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| author | Wen Long Weijie Chen Changfu Huang Dongyang Li Dong Su |
| author_facet | Wen Long Weijie Chen Changfu Huang Dongyang Li Dong Su |
| author_sort | Wen Long |
| collection | DOAJ |
| description | We establish an elaborate numerical model with which to investigate the deformation characteristics of segmental lining. The numerical model contains reinforcement and connecting bolts that previous numerical studies have generally neglected. We validated the model parameters using a full-scale model test result. Based on this numerical model, we studied the deformation characteristics of segmental lining. Convergence, joint deformation, bolt stress, and reinforcement stress were systematically analyzed under different loading conditions. Furthermore, we discuss the relationships between convergence and joint opening, bolt stress and joint opening. The deformation characteristics of segmental lining are revealed. When the lining is deformed by earth pressure, plastic hinges form at the joints. The segment rotates around the plastic hinge, which is the main reason for segmental lining deformation under earth pressure. Horizontal convergence is a single index to reflect the deformation of tunnel rings, representing the overall deformation of the ring to a certain extent but not the deformation characteristics of the joint. When the loading conditions differ, the relationship between joint opening and horizontal convergence is consistent for some joints and inconsistent for others. |
| first_indexed | 2024-03-09T19:26:48Z |
| format | Article |
| id | doaj.art-6508ee91f77d4ba6be3e2a872bc45ca8 |
| institution | Directory Open Access Journal |
| issn | 2073-8994 |
| language | English |
| last_indexed | 2024-03-09T19:26:48Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Symmetry |
| spelling | doaj.art-6508ee91f77d4ba6be3e2a872bc45ca82023-11-24T02:51:03ZengMDPI AGSymmetry2073-89942022-09-011410203010.3390/sym14102030Study on Transverse Deformation Characteristics of a Shield Tunnel under Earth Pressure by Refined Finite Element AnalysesWen Long0Weijie Chen1Changfu Huang2Dongyang Li3Dong Su4Zhuhai Da Heng Qin City New Center Development Co., Ltd., Zhuhai 519030, ChinaCollege of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518060, ChinaChina Railway 15th Bureau Group Co., Ltd., Shanghai 200070, ChinaZhuhai Institute of Urban Planning & Design, Zhuhai 519000, ChinaCollege of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518060, ChinaWe establish an elaborate numerical model with which to investigate the deformation characteristics of segmental lining. The numerical model contains reinforcement and connecting bolts that previous numerical studies have generally neglected. We validated the model parameters using a full-scale model test result. Based on this numerical model, we studied the deformation characteristics of segmental lining. Convergence, joint deformation, bolt stress, and reinforcement stress were systematically analyzed under different loading conditions. Furthermore, we discuss the relationships between convergence and joint opening, bolt stress and joint opening. The deformation characteristics of segmental lining are revealed. When the lining is deformed by earth pressure, plastic hinges form at the joints. The segment rotates around the plastic hinge, which is the main reason for segmental lining deformation under earth pressure. Horizontal convergence is a single index to reflect the deformation of tunnel rings, representing the overall deformation of the ring to a certain extent but not the deformation characteristics of the joint. When the loading conditions differ, the relationship between joint opening and horizontal convergence is consistent for some joints and inconsistent for others.https://www.mdpi.com/2073-8994/14/10/2030shield tunnelsegmental liningsymmetrical structurenumerical simulation |
| spellingShingle | Wen Long Weijie Chen Changfu Huang Dongyang Li Dong Su Study on Transverse Deformation Characteristics of a Shield Tunnel under Earth Pressure by Refined Finite Element Analyses Symmetry shield tunnel segmental lining symmetrical structure numerical simulation |
| title | Study on Transverse Deformation Characteristics of a Shield Tunnel under Earth Pressure by Refined Finite Element Analyses |
| title_full | Study on Transverse Deformation Characteristics of a Shield Tunnel under Earth Pressure by Refined Finite Element Analyses |
| title_fullStr | Study on Transverse Deformation Characteristics of a Shield Tunnel under Earth Pressure by Refined Finite Element Analyses |
| title_full_unstemmed | Study on Transverse Deformation Characteristics of a Shield Tunnel under Earth Pressure by Refined Finite Element Analyses |
| title_short | Study on Transverse Deformation Characteristics of a Shield Tunnel under Earth Pressure by Refined Finite Element Analyses |
| title_sort | study on transverse deformation characteristics of a shield tunnel under earth pressure by refined finite element analyses |
| topic | shield tunnel segmental lining symmetrical structure numerical simulation |
| url | https://www.mdpi.com/2073-8994/14/10/2030 |
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