Performance of the suspension method in large cross-section shallow-buried tunnels
Large cross-section tunnel construction induces ground surface settlements, potentially endangering both subterranean projects and nearby above-ground structures. A novel tunnel construction method, known as the suspension method, is introduced in this paper to mitigate surface settlement. The suspe...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2023-12-01
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| Series: | High-Speed Railway |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2949867823000600 |
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| _version_ | 1846170027206639616 |
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| author | Guoqing Cai Xinxiang Zou Qiang Zhang Rui Yang Tianchi Wu Jiguang Li |
| author_facet | Guoqing Cai Xinxiang Zou Qiang Zhang Rui Yang Tianchi Wu Jiguang Li |
| author_sort | Guoqing Cai |
| collection | DOAJ |
| description | Large cross-section tunnel construction induces ground surface settlements, potentially endangering both subterranean projects and nearby above-ground structures. A novel tunnel construction method, known as the suspension method, is introduced in this paper to mitigate surface settlement. The suspension method employs vertical tie rods to establish a structural connection between the initial tunnel support system and the surface steel beam, thereby exerting effective control settlements. To analyze the performance of the proposed method, systematic numerical simulations were conducted based on the practical engineering of Harbin Subway Line 3. The surface settlement and vault settlement characteristics during construction are investigated. The results show a gradual increment in both surface and vault settlement throughout the construction process, culminating in a stabilized state upon the completion of construction. In addition, compared to the double-side drift method and the Cross Diaphragm Method (CRD) method, the suspension method can obviously reduce the surface settlement and vault settlement. Moreover, the surface settlements and the axial force of tie rods were continuously monitored during the construction process at the trial tunnel block. These specific monitoring measurements are illustrated in comparison to numerical analysis results. The monitored results show great agreement with the numerical predictions, confirming the success of the project. This research can serve as a valuable practical reference for similar projects, offering insights and guidance for addressing ground surface settlements and enhancing construction safety in the domain of large cross-section tunneling. |
| format | Article |
| id | doaj-art-9327f0c5da8c46c7b2a3e8099fa722d4 |
| institution | Kabale University |
| issn | 2949-8678 |
| language | English |
| publishDate | 2023-12-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | High-Speed Railway |
| spelling | doaj-art-9327f0c5da8c46c7b2a3e8099fa722d42024-11-12T05:22:15ZengKeAi Communications Co., Ltd.High-Speed Railway2949-86782023-12-0114224232Performance of the suspension method in large cross-section shallow-buried tunnelsGuoqing Cai0Xinxiang Zou1Qiang Zhang2Rui Yang3Tianchi Wu4Jiguang Li5Key Laboratory of Urban Underground Engineering of Ministry of Education, Beijing Jiaotong University, Beijing 100044, China; School of Civil Engineering , Beijing Jiaotong University, Beijing 100044, ChinaChina Communications (Nanjing) Construction Co., Ltd., Nanjing 210000, ChinaCCCC Rail Transit Technology Research and Development Center, Beijing 101304, ChinaSchool of Civil Engineering , Beijing Jiaotong University, Beijing 100044, China; Corresponding author.School of Engineering, Cardiff University, Cardiff CF24 3AA, United KingdomFujian Academy of Building Research Co., Ltd., Fuzhou 350025, ChinaLarge cross-section tunnel construction induces ground surface settlements, potentially endangering both subterranean projects and nearby above-ground structures. A novel tunnel construction method, known as the suspension method, is introduced in this paper to mitigate surface settlement. The suspension method employs vertical tie rods to establish a structural connection between the initial tunnel support system and the surface steel beam, thereby exerting effective control settlements. To analyze the performance of the proposed method, systematic numerical simulations were conducted based on the practical engineering of Harbin Subway Line 3. The surface settlement and vault settlement characteristics during construction are investigated. The results show a gradual increment in both surface and vault settlement throughout the construction process, culminating in a stabilized state upon the completion of construction. In addition, compared to the double-side drift method and the Cross Diaphragm Method (CRD) method, the suspension method can obviously reduce the surface settlement and vault settlement. Moreover, the surface settlements and the axial force of tie rods were continuously monitored during the construction process at the trial tunnel block. These specific monitoring measurements are illustrated in comparison to numerical analysis results. The monitored results show great agreement with the numerical predictions, confirming the success of the project. This research can serve as a valuable practical reference for similar projects, offering insights and guidance for addressing ground surface settlements and enhancing construction safety in the domain of large cross-section tunneling.http://www.sciencedirect.com/science/article/pii/S2949867823000600Subway tunnel constructionSuspension methodSettlement controlNumerical analysisOn-site monitoring |
| spellingShingle | Guoqing Cai Xinxiang Zou Qiang Zhang Rui Yang Tianchi Wu Jiguang Li Performance of the suspension method in large cross-section shallow-buried tunnels High-Speed Railway Subway tunnel construction Suspension method Settlement control Numerical analysis On-site monitoring |
| title | Performance of the suspension method in large cross-section shallow-buried tunnels |
| title_full | Performance of the suspension method in large cross-section shallow-buried tunnels |
| title_fullStr | Performance of the suspension method in large cross-section shallow-buried tunnels |
| title_full_unstemmed | Performance of the suspension method in large cross-section shallow-buried tunnels |
| title_short | Performance of the suspension method in large cross-section shallow-buried tunnels |
| title_sort | performance of the suspension method in large cross section shallow buried tunnels |
| topic | Subway tunnel construction Suspension method Settlement control Numerical analysis On-site monitoring |
| url | http://www.sciencedirect.com/science/article/pii/S2949867823000600 |
| work_keys_str_mv | AT guoqingcai performanceofthesuspensionmethodinlargecrosssectionshallowburiedtunnels AT xinxiangzou performanceofthesuspensionmethodinlargecrosssectionshallowburiedtunnels AT qiangzhang performanceofthesuspensionmethodinlargecrosssectionshallowburiedtunnels AT ruiyang performanceofthesuspensionmethodinlargecrosssectionshallowburiedtunnels AT tianchiwu performanceofthesuspensionmethodinlargecrosssectionshallowburiedtunnels AT jiguangli performanceofthesuspensionmethodinlargecrosssectionshallowburiedtunnels |