Application and Effect Evaluation of Elastic Foundation Beam Method in Deformation Analysis of Underground Passage Underneath Excavated Tunnel
Tunneling under existing underground buildings has become a common issue in densely populated urban areas. The current elastic analysis for ground displacement from new tunnel construction focuses on circular tunnels. However, theoretical analysis for non-circular chamber excavations is lacking. Thi...
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2024-11-01
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| author | Yunhong Lin Mingyu Li Qirui Zhang Jinghui Yang |
| author_facet | Yunhong Lin Mingyu Li Qirui Zhang Jinghui Yang |
| author_sort | Yunhong Lin |
| collection | DOAJ |
| description | Tunneling under existing underground buildings has become a common issue in densely populated urban areas. The current elastic analysis for ground displacement from new tunnel construction focuses on circular tunnels. However, theoretical analysis for non-circular chamber excavations is lacking. This paper aims to develop an elastic analysis for ground deformation from non-circular chamber excavations using the ‘equivalent radius’ theory, Verruijt’s formula, and Park’s model. It adjusts the ellipticization parameter <i>δ</i> and uniform radial displacement <i>ε</i> in Verruijt’s formula. Additionally, equivalent stiffness values for diverse existing hollow structures are considered using various approaches. A comparison of the theoretical results from field measurements and simulations shows the modified equations predict ground deformation well. Finally, parametric analysis explores the impacts of non-circular cavern excavations on existing structures under different factors. |
| format | Article |
| id | doaj-art-7268362d1cd44fcba133ea0287dce943 |
| institution | OA Journals |
| issn | 2076-3417 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj-art-7268362d1cd44fcba133ea0287dce9432025-08-20T01:53:40ZengMDPI AGApplied Sciences2076-34172024-11-0114221043510.3390/app142210435Application and Effect Evaluation of Elastic Foundation Beam Method in Deformation Analysis of Underground Passage Underneath Excavated TunnelYunhong Lin0Mingyu Li1Qirui Zhang2Jinghui Yang3School of Civil Engineering, Zhengzhou University, Zhengzhou 450001, ChinaSchool of Civil Engineering, Zhengzhou University, Zhengzhou 450001, ChinaSchool of Civil Engineering, Zhengzhou University, Zhengzhou 450001, ChinaSchool of Civil Engineering, Zhengzhou University, Zhengzhou 450001, ChinaTunneling under existing underground buildings has become a common issue in densely populated urban areas. The current elastic analysis for ground displacement from new tunnel construction focuses on circular tunnels. However, theoretical analysis for non-circular chamber excavations is lacking. This paper aims to develop an elastic analysis for ground deformation from non-circular chamber excavations using the ‘equivalent radius’ theory, Verruijt’s formula, and Park’s model. It adjusts the ellipticization parameter <i>δ</i> and uniform radial displacement <i>ε</i> in Verruijt’s formula. Additionally, equivalent stiffness values for diverse existing hollow structures are considered using various approaches. A comparison of the theoretical results from field measurements and simulations shows the modified equations predict ground deformation well. Finally, parametric analysis explores the impacts of non-circular cavern excavations on existing structures under different factors.https://www.mdpi.com/2076-3417/14/22/10435non-circular tunnelexisting underground structureelastic foundation beammechanical response |
| spellingShingle | Yunhong Lin Mingyu Li Qirui Zhang Jinghui Yang Application and Effect Evaluation of Elastic Foundation Beam Method in Deformation Analysis of Underground Passage Underneath Excavated Tunnel Applied Sciences non-circular tunnel existing underground structure elastic foundation beam mechanical response |
| title | Application and Effect Evaluation of Elastic Foundation Beam Method in Deformation Analysis of Underground Passage Underneath Excavated Tunnel |
| title_full | Application and Effect Evaluation of Elastic Foundation Beam Method in Deformation Analysis of Underground Passage Underneath Excavated Tunnel |
| title_fullStr | Application and Effect Evaluation of Elastic Foundation Beam Method in Deformation Analysis of Underground Passage Underneath Excavated Tunnel |
| title_full_unstemmed | Application and Effect Evaluation of Elastic Foundation Beam Method in Deformation Analysis of Underground Passage Underneath Excavated Tunnel |
| title_short | Application and Effect Evaluation of Elastic Foundation Beam Method in Deformation Analysis of Underground Passage Underneath Excavated Tunnel |
| title_sort | application and effect evaluation of elastic foundation beam method in deformation analysis of underground passage underneath excavated tunnel |
| topic | non-circular tunnel existing underground structure elastic foundation beam mechanical response |
| url | https://www.mdpi.com/2076-3417/14/22/10435 |
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