Deformation Response of a Pipeline to Nearby Deep Foundation Pit Excavation: Numerical Simulations and Field Tests
Deep foundation pit excavation (DFPE) for metro stations in soft layers can cause strata deformation, impairing the safety and performance of nearby existing structures. This paper aims to explore the impact of DFPE on an adjacent oil pipeline using numerical simulations and field tests. Using the p...
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| Format: | Article |
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MDPI AG
2023-05-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/13/11/6597 |
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| author | Zhanping Song Youchuan Wu Yuwei Zhang Kuisheng Wang Jiale Tian Xiaoxu Tian |
| author_facet | Zhanping Song Youchuan Wu Yuwei Zhang Kuisheng Wang Jiale Tian Xiaoxu Tian |
| author_sort | Zhanping Song |
| collection | DOAJ |
| description | Deep foundation pit excavation (DFPE) for metro stations in soft layers can cause strata deformation, impairing the safety and performance of nearby existing structures. This paper aims to explore the impact of DFPE on an adjacent oil pipeline using numerical simulations and field tests. Using the project of Xinxingcun Station of Tianjin Metro Line 4 in China as a case study, two approaches of layered excavation (LE) and bench excavation (BE) are proposed for DFPE. The deformation induced by the two approaches was analyzed using the FE method. The maximum vertical settlement of the oil pipeline caused by LE was 8.1 mm, compared with the maximum vertical settlement of 12.5 mm caused by BE. In practice, LE was selected as the construction scheme for the DFPE in Xinxingcun Station. Some field measurement work on pipeline deformation was conducted, and the results were in good agreement with the numerical simulation. Lastly, the change pattern in the pipeline-soil gap was studied. The angle of the position with peak gap width increased from 25° to 110°. |
| first_indexed | 2024-03-11T03:12:03Z |
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| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-11T03:12:03Z |
| publishDate | 2023-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-f28bdf921f20478aad658e193f63e9072023-11-18T07:34:14ZengMDPI AGApplied Sciences2076-34172023-05-011311659710.3390/app13116597Deformation Response of a Pipeline to Nearby Deep Foundation Pit Excavation: Numerical Simulations and Field TestsZhanping Song0Youchuan Wu1Yuwei Zhang2Kuisheng Wang3Jiale Tian4Xiaoxu Tian5School of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710064, ChinaSchool of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710064, ChinaSchool of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710064, ChinaSchool of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710064, ChinaSchool of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710064, ChinaSchool of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710064, ChinaDeep foundation pit excavation (DFPE) for metro stations in soft layers can cause strata deformation, impairing the safety and performance of nearby existing structures. This paper aims to explore the impact of DFPE on an adjacent oil pipeline using numerical simulations and field tests. Using the project of Xinxingcun Station of Tianjin Metro Line 4 in China as a case study, two approaches of layered excavation (LE) and bench excavation (BE) are proposed for DFPE. The deformation induced by the two approaches was analyzed using the FE method. The maximum vertical settlement of the oil pipeline caused by LE was 8.1 mm, compared with the maximum vertical settlement of 12.5 mm caused by BE. In practice, LE was selected as the construction scheme for the DFPE in Xinxingcun Station. Some field measurement work on pipeline deformation was conducted, and the results were in good agreement with the numerical simulation. Lastly, the change pattern in the pipeline-soil gap was studied. The angle of the position with peak gap width increased from 25° to 110°.https://www.mdpi.com/2076-3417/13/11/6597soft soil layerdeep foundation pitpipelinenumerical simulationfield measurement |
| spellingShingle | Zhanping Song Youchuan Wu Yuwei Zhang Kuisheng Wang Jiale Tian Xiaoxu Tian Deformation Response of a Pipeline to Nearby Deep Foundation Pit Excavation: Numerical Simulations and Field Tests Applied Sciences soft soil layer deep foundation pit pipeline numerical simulation field measurement |
| title | Deformation Response of a Pipeline to Nearby Deep Foundation Pit Excavation: Numerical Simulations and Field Tests |
| title_full | Deformation Response of a Pipeline to Nearby Deep Foundation Pit Excavation: Numerical Simulations and Field Tests |
| title_fullStr | Deformation Response of a Pipeline to Nearby Deep Foundation Pit Excavation: Numerical Simulations and Field Tests |
| title_full_unstemmed | Deformation Response of a Pipeline to Nearby Deep Foundation Pit Excavation: Numerical Simulations and Field Tests |
| title_short | Deformation Response of a Pipeline to Nearby Deep Foundation Pit Excavation: Numerical Simulations and Field Tests |
| title_sort | deformation response of a pipeline to nearby deep foundation pit excavation numerical simulations and field tests |
| topic | soft soil layer deep foundation pit pipeline numerical simulation field measurement |
| url | https://www.mdpi.com/2076-3417/13/11/6597 |
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