Stability Analysis of the Foundation Pit and the Twin Shield Tunnels during Adjacent Construction
Due to the rapid development of urban rail transit and the development and use of underground space, foundation pit construction near existing subway tunnels is becoming increasingly common. When adjacent foundation pit projects are being constructed, it is difficult to avoid the influence on existi...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-04-01
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| Series: | Buildings |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-5309/13/4/1000 |
| _version_ | 1797606058875682816 |
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| author | Xuan Zhang Libin Wang Mengshuo Ma Wei Li Yuzheng Wang |
| author_facet | Xuan Zhang Libin Wang Mengshuo Ma Wei Li Yuzheng Wang |
| author_sort | Xuan Zhang |
| collection | DOAJ |
| description | Due to the rapid development of urban rail transit and the development and use of underground space, foundation pit construction near existing subway tunnels is becoming increasingly common. When adjacent foundation pit projects are being constructed, it is difficult to avoid the influence on existing subway tunnels, which threatens the safe operation of subway tunnels. Thus, this study focused on the stability of the adjacent construction of foundation pits and twin shield tunnels. The finite element limit analysis (FELA) method was used to analyze the influences of construction scheme and relative position of the twin shield tunnels and adjacent foundation pit on the global stability of adjacent construction. Based on the research results, the guidance and design for the construction scheme and relative position are provided. The stability analysis on the foundation pit during the construction process is performed. The criteria of adjacent influential partition are proposed, and the influence of various input parameters (c/γD, φ, L/D and C/D) on the global stability of adjacent construction is discussed, respectively. A new design equation of safety factor of global stability of adjacent construction is obtained by curve fitting. |
| first_indexed | 2024-03-11T05:09:59Z |
| format | Article |
| id | doaj.art-54d71eafd0c24670a784c63a30d2991a |
| institution | Directory Open Access Journal |
| issn | 2075-5309 |
| language | English |
| last_indexed | 2024-03-11T05:09:59Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj.art-54d71eafd0c24670a784c63a30d2991a2023-11-17T18:36:06ZengMDPI AGBuildings2075-53092023-04-01134100010.3390/buildings13041000Stability Analysis of the Foundation Pit and the Twin Shield Tunnels during Adjacent ConstructionXuan Zhang0Libin Wang1Mengshuo Ma2Wei Li3Yuzheng Wang4Key Laboratory of Urban Underground Engineering of the Education Ministry, Beijing Jiaotong University, Beijing 100044, ChinaKey Laboratory of Urban Underground Engineering of the Education Ministry, Beijing Jiaotong University, Beijing 100044, ChinaKey Laboratory of Urban Underground Engineering of the Education Ministry, Beijing Jiaotong University, Beijing 100044, ChinaKey Laboratory of Urban Underground Engineering of the Education Ministry, Beijing Jiaotong University, Beijing 100044, ChinaKey Laboratory of Urban Underground Engineering of the Education Ministry, Beijing Jiaotong University, Beijing 100044, ChinaDue to the rapid development of urban rail transit and the development and use of underground space, foundation pit construction near existing subway tunnels is becoming increasingly common. When adjacent foundation pit projects are being constructed, it is difficult to avoid the influence on existing subway tunnels, which threatens the safe operation of subway tunnels. Thus, this study focused on the stability of the adjacent construction of foundation pits and twin shield tunnels. The finite element limit analysis (FELA) method was used to analyze the influences of construction scheme and relative position of the twin shield tunnels and adjacent foundation pit on the global stability of adjacent construction. Based on the research results, the guidance and design for the construction scheme and relative position are provided. The stability analysis on the foundation pit during the construction process is performed. The criteria of adjacent influential partition are proposed, and the influence of various input parameters (c/γD, φ, L/D and C/D) on the global stability of adjacent construction is discussed, respectively. A new design equation of safety factor of global stability of adjacent construction is obtained by curve fitting.https://www.mdpi.com/2075-5309/13/4/1000stability analysisfoundation pittwin shield tunnelsadjacent constructionfinite element limit analysisdesign equation |
| spellingShingle | Xuan Zhang Libin Wang Mengshuo Ma Wei Li Yuzheng Wang Stability Analysis of the Foundation Pit and the Twin Shield Tunnels during Adjacent Construction Buildings stability analysis foundation pit twin shield tunnels adjacent construction finite element limit analysis design equation |
| title | Stability Analysis of the Foundation Pit and the Twin Shield Tunnels during Adjacent Construction |
| title_full | Stability Analysis of the Foundation Pit and the Twin Shield Tunnels during Adjacent Construction |
| title_fullStr | Stability Analysis of the Foundation Pit and the Twin Shield Tunnels during Adjacent Construction |
| title_full_unstemmed | Stability Analysis of the Foundation Pit and the Twin Shield Tunnels during Adjacent Construction |
| title_short | Stability Analysis of the Foundation Pit and the Twin Shield Tunnels during Adjacent Construction |
| title_sort | stability analysis of the foundation pit and the twin shield tunnels during adjacent construction |
| topic | stability analysis foundation pit twin shield tunnels adjacent construction finite element limit analysis design equation |
| url | https://www.mdpi.com/2075-5309/13/4/1000 |
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