Temporal-Spatial Characteristics of Ground and Pile Responses to Twin Shield Tunneling in Clays
This paper investigates the temporal-spatial characteristics of ground displacements as well as vertical and horizontal displacements and axial forces in existing piles induced by twin shield tunneling in clays. To that end, a case study and three-dimensional (3D) finite element (FE) analysis were p...
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2021/2373456 |
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| author | Minghong Sheng Jinjin Gao Panpan Guo Rihong Cao Yixian Wang |
| author_facet | Minghong Sheng Jinjin Gao Panpan Guo Rihong Cao Yixian Wang |
| author_sort | Minghong Sheng |
| collection | DOAJ |
| description | This paper investigates the temporal-spatial characteristics of ground displacements as well as vertical and horizontal displacements and axial forces in existing piles induced by twin shield tunneling in clays. To that end, a case study and three-dimensional (3D) finite element (FE) analysis were performed. Based on the in situ monitoring data from the presented twin tunneling case history with existing piles beneath, the adopted 3D FE method was validated to be competent to yield reasonable simulation results. The validated 3D FE method was then used to analyze the effects of the distance between the tunnel and the pile, the distance between tunnel faces, and the pile length on the horizontal and vertical displacements and axial stresses in piles. It was found that the horizontal displacement distribution forms along the pile shaft for the front piles are similar to that for the back piles, whereas the magnitudes of the horizontal displacements of the front piles are slightly larger than that of the back piles. The interactions between piles in the pile group provide protection of the middle piles in the pile group against twin tunneling effects. With a reduction in the distance between the tunnel and the pile, the pile displacements and stresses increase nonlinearly. With an increase in the distance between tunnel faces, the maximum positive pile displacements and the maximum and minimum axial pile stresses increase, while the maximum negative pile displacements and the difference between the maximum and minimum axial pile stresses decrease. |
| format | Article |
| id | doaj-art-eba17b4489b048e6b290c1caf2df2da8 |
| institution | Kabale University |
| issn | 1468-8115 1468-8123 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-eba17b4489b048e6b290c1caf2df2da82025-02-03T01:24:43ZengWileyGeofluids1468-81151468-81232021-01-01202110.1155/2021/23734562373456Temporal-Spatial Characteristics of Ground and Pile Responses to Twin Shield Tunneling in ClaysMinghong Sheng0Jinjin Gao1Panpan Guo2Rihong Cao3Yixian Wang4School of Management, Hefei University of Technology, Hefei 230009, ChinaCenter for Strategic Studies, Chinese Academy of Engineering, Beijing 100088, ChinaResearch Center of Coastal and Urban Geotechnical Engineering, Zhejiang University, Hangzhou 310058, ChinaThe University of Western Australia, Perth WA 6009, AustraliaSchool of Civil Engineering, Hefei University of Technology, Hefei 230009, ChinaThis paper investigates the temporal-spatial characteristics of ground displacements as well as vertical and horizontal displacements and axial forces in existing piles induced by twin shield tunneling in clays. To that end, a case study and three-dimensional (3D) finite element (FE) analysis were performed. Based on the in situ monitoring data from the presented twin tunneling case history with existing piles beneath, the adopted 3D FE method was validated to be competent to yield reasonable simulation results. The validated 3D FE method was then used to analyze the effects of the distance between the tunnel and the pile, the distance between tunnel faces, and the pile length on the horizontal and vertical displacements and axial stresses in piles. It was found that the horizontal displacement distribution forms along the pile shaft for the front piles are similar to that for the back piles, whereas the magnitudes of the horizontal displacements of the front piles are slightly larger than that of the back piles. The interactions between piles in the pile group provide protection of the middle piles in the pile group against twin tunneling effects. With a reduction in the distance between the tunnel and the pile, the pile displacements and stresses increase nonlinearly. With an increase in the distance between tunnel faces, the maximum positive pile displacements and the maximum and minimum axial pile stresses increase, while the maximum negative pile displacements and the difference between the maximum and minimum axial pile stresses decrease.http://dx.doi.org/10.1155/2021/2373456 |
| spellingShingle | Minghong Sheng Jinjin Gao Panpan Guo Rihong Cao Yixian Wang Temporal-Spatial Characteristics of Ground and Pile Responses to Twin Shield Tunneling in Clays Geofluids |
| title | Temporal-Spatial Characteristics of Ground and Pile Responses to Twin Shield Tunneling in Clays |
| title_full | Temporal-Spatial Characteristics of Ground and Pile Responses to Twin Shield Tunneling in Clays |
| title_fullStr | Temporal-Spatial Characteristics of Ground and Pile Responses to Twin Shield Tunneling in Clays |
| title_full_unstemmed | Temporal-Spatial Characteristics of Ground and Pile Responses to Twin Shield Tunneling in Clays |
| title_short | Temporal-Spatial Characteristics of Ground and Pile Responses to Twin Shield Tunneling in Clays |
| title_sort | temporal spatial characteristics of ground and pile responses to twin shield tunneling in clays |
| url | http://dx.doi.org/10.1155/2021/2373456 |
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