Response Analysis of Deep Foundation Excavation and Dewatering on Surface Settlements
Accurate prediction of surface settlements is a primary concern when deep excavations were carrying out under the water table in urban environments for the safety of the work site. The sedimentation deformation due to deep excavation of foundation pit and dewatering occurs as a result of coupling ac...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2020/8855839 |
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| author | Xian Li Tingguo Zhou Yixian Wang Junling Han Yanqiao Wang Fang Tong Delong Li Jinmei Wen |
| author_facet | Xian Li Tingguo Zhou Yixian Wang Junling Han Yanqiao Wang Fang Tong Delong Li Jinmei Wen |
| author_sort | Xian Li |
| collection | DOAJ |
| description | Accurate prediction of surface settlements is a primary concern when deep excavations were carrying out under the water table in urban environments for the safety of the work site. The sedimentation deformation due to deep excavation of foundation pit and dewatering occurs as a result of coupling action of the two factors. The study is aimed at revealing the coupling ground response to the two factors and developing empirical correlations for estimating ground deformations. Taking a deep foundation pit of a metro station as an example, surface settlement estimations were calculated by analytical formulas and numerical models. The settlement results by analytical formulas under excavation and dewatering conditions were added linearly to the total settlements. And three-dimensional coupling numerical models were established by applying commercial software (GMS and MIDAS) to investigate the interaction impact of excavation and dewatering on the sedimentation deformation. Comparing with monitoring data, numerical simulation results match well with the monitoring data. Furthermore, an empirical surface subsidence correlation equation was developed by the polynomial fitting to illustrate the effect contribution on the total surface settlement of foundation excavation and dewatering. |
| format | Article |
| id | doaj-art-5de762307fdd469894d629c8ca247bef |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-5de762307fdd469894d629c8ca247bef2025-02-03T01:04:29ZengWileyAdvances in Civil Engineering1687-80861687-80942020-01-01202010.1155/2020/88558398855839Response Analysis of Deep Foundation Excavation and Dewatering on Surface SettlementsXian Li0Tingguo Zhou1Yixian Wang2Junling Han3Yanqiao Wang4Fang Tong5Delong Li6Jinmei Wen7School of Civil Engineering, Hefei University of Technology, Hefei 230009, ChinaSchool of Civil Engineering, Hefei University of Technology, Hefei 230009, ChinaSchool of Civil Engineering, Hefei University of Technology, Hefei 230009, ChinaSchool of Civil Engineering, Hefei University of Technology, Hefei 230009, ChinaSchool of Civil Engineering, Hefei University of Technology, Hefei 230009, ChinaSchool of Civil Engineering, Hefei University of Technology, Hefei 230009, ChinaNanjiang Hydrogeology and Engineering Geology Team of Chongqing Bureau of Geology and Minerals Exploration, Chongqing 401146, ChinaNo. 208 Hydrogeology and Engineering Geology Team of Chongqing Bureau of Geology and Minerals Exploration, Chongqing Institute of Geological Hazard Prevention Engineering Exploration and Design, Chongqing 400700, ChinaAccurate prediction of surface settlements is a primary concern when deep excavations were carrying out under the water table in urban environments for the safety of the work site. The sedimentation deformation due to deep excavation of foundation pit and dewatering occurs as a result of coupling action of the two factors. The study is aimed at revealing the coupling ground response to the two factors and developing empirical correlations for estimating ground deformations. Taking a deep foundation pit of a metro station as an example, surface settlement estimations were calculated by analytical formulas and numerical models. The settlement results by analytical formulas under excavation and dewatering conditions were added linearly to the total settlements. And three-dimensional coupling numerical models were established by applying commercial software (GMS and MIDAS) to investigate the interaction impact of excavation and dewatering on the sedimentation deformation. Comparing with monitoring data, numerical simulation results match well with the monitoring data. Furthermore, an empirical surface subsidence correlation equation was developed by the polynomial fitting to illustrate the effect contribution on the total surface settlement of foundation excavation and dewatering.http://dx.doi.org/10.1155/2020/8855839 |
| spellingShingle | Xian Li Tingguo Zhou Yixian Wang Junling Han Yanqiao Wang Fang Tong Delong Li Jinmei Wen Response Analysis of Deep Foundation Excavation and Dewatering on Surface Settlements Advances in Civil Engineering |
| title | Response Analysis of Deep Foundation Excavation and Dewatering on Surface Settlements |
| title_full | Response Analysis of Deep Foundation Excavation and Dewatering on Surface Settlements |
| title_fullStr | Response Analysis of Deep Foundation Excavation and Dewatering on Surface Settlements |
| title_full_unstemmed | Response Analysis of Deep Foundation Excavation and Dewatering on Surface Settlements |
| title_short | Response Analysis of Deep Foundation Excavation and Dewatering on Surface Settlements |
| title_sort | response analysis of deep foundation excavation and dewatering on surface settlements |
| url | http://dx.doi.org/10.1155/2020/8855839 |
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