Numerical Analysis on the Performance of the Underwater Excavation
Based on the Yongdingmen Station of Beijing Metro, the underwater excavation method for deep foundation pit was introduced. This study constructed a numerical analysis model to analyze the performance of surface settlement and lateral wall deflection in the process of underwater excavation. Results...
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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/10.1155/2020/8894138 |
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| author | Bo Li Cangqin Jia Guihe Wang Jun Ren Gaofeng Lu Nannan Liu |
| author_facet | Bo Li Cangqin Jia Guihe Wang Jun Ren Gaofeng Lu Nannan Liu |
| author_sort | Bo Li |
| collection | DOAJ |
| description | Based on the Yongdingmen Station of Beijing Metro, the underwater excavation method for deep foundation pit was introduced. This study constructed a numerical analysis model to analyze the performance of surface settlement and lateral wall deflection in the process of underwater excavation. Results showed that this method was better to control the surface settlement and lateral wall deflection compared with other dewatering excavations. In detail, most of the surface settlement was caused during the dry excavation stage and dewatering excavation stage while the deflection caused by underwater excavation only accounted for about 10% of the total settlement. Besides, the maximum settlement occurred 0.25∼0.5 He behind the retaining wall and the value was 0.04% He. Similar to the result of the surface settlement, most of the lateral wall deflection had been completed before the underwater excavation, which only caused about 7% of the total deflection. The maximum wall deflection and its location were approximately 0.06% He and 0.5 He, respectively. Moreover, a series of 3D numerical analyses were studied on the design parameters of the underwater excavation method. This study can be used as a reference for general performance and structural design of foundation pits with underwater excavation. |
| format | Article |
| id | doaj-art-a971ce5b6bae4b6e865636a80d0a2643 |
| institution | OA Journals |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-a971ce5b6bae4b6e865636a80d0a26432025-08-20T02:23:08ZengWileyAdvances in Civil Engineering1687-80861687-80942020-01-01202010.1155/2020/88941388894138Numerical Analysis on the Performance of the Underwater ExcavationBo Li0Cangqin Jia1Guihe Wang2Jun Ren3Gaofeng Lu4Nannan Liu5School of Engineering and Technology, China University of Geosciences (Beijing), Haidian District, Beijing 100083, ChinaSchool of Engineering and Technology, China University of Geosciences (Beijing), Haidian District, Beijing 100083, ChinaSchool of Engineering and Technology, China University of Geosciences (Beijing), Haidian District, Beijing 100083, ChinaCCCC Tunnel Engineering Company Limited, Chaoyang District, Beijing 100102, ChinaBeijing Metro Construction Administration Corporation Ltd, Fengtai District, Beijing 100068, ChinaSchool of Energy Resources, China University of Geosciences (Beijing), Haidian District, Beijing 100083, ChinaBased on the Yongdingmen Station of Beijing Metro, the underwater excavation method for deep foundation pit was introduced. This study constructed a numerical analysis model to analyze the performance of surface settlement and lateral wall deflection in the process of underwater excavation. Results showed that this method was better to control the surface settlement and lateral wall deflection compared with other dewatering excavations. In detail, most of the surface settlement was caused during the dry excavation stage and dewatering excavation stage while the deflection caused by underwater excavation only accounted for about 10% of the total settlement. Besides, the maximum settlement occurred 0.25∼0.5 He behind the retaining wall and the value was 0.04% He. Similar to the result of the surface settlement, most of the lateral wall deflection had been completed before the underwater excavation, which only caused about 7% of the total deflection. The maximum wall deflection and its location were approximately 0.06% He and 0.5 He, respectively. Moreover, a series of 3D numerical analyses were studied on the design parameters of the underwater excavation method. This study can be used as a reference for general performance and structural design of foundation pits with underwater excavation.http://dx.doi.org/10.1155/2020/8894138 |
| spellingShingle | Bo Li Cangqin Jia Guihe Wang Jun Ren Gaofeng Lu Nannan Liu Numerical Analysis on the Performance of the Underwater Excavation Advances in Civil Engineering |
| title | Numerical Analysis on the Performance of the Underwater Excavation |
| title_full | Numerical Analysis on the Performance of the Underwater Excavation |
| title_fullStr | Numerical Analysis on the Performance of the Underwater Excavation |
| title_full_unstemmed | Numerical Analysis on the Performance of the Underwater Excavation |
| title_short | Numerical Analysis on the Performance of the Underwater Excavation |
| title_sort | numerical analysis on the performance of the underwater excavation |
| url | http://dx.doi.org/10.1155/2020/8894138 |
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