Numerical Simulation of Soil Displacement and Settlement in Deep Foundation Pit Excavations Near Water
Advancing urbanization in China requires large-scale high-rise construction and underground transportation projects. Consequently, there is an increasing number of deep foundation pits adjacent to water bodies, and accidents occur frequently. This study uses a numerical simulation method to study th...
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2021-01-01
|
| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2021/5559009 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832560608981024768 |
|---|---|
| author | Zhongjing Hu Qingbiao Wang Shuo Yang Zhenyue Shi Bo Liu Hongxu Song Fuqiang Wang |
| author_facet | Zhongjing Hu Qingbiao Wang Shuo Yang Zhenyue Shi Bo Liu Hongxu Song Fuqiang Wang |
| author_sort | Zhongjing Hu |
| collection | DOAJ |
| description | Advancing urbanization in China requires large-scale high-rise construction and underground transportation projects. Consequently, there is an increasing number of deep foundation pits adjacent to water bodies, and accidents occur frequently. This study uses a numerical simulation method to study the stability of the deep foundation pit near water based on the Biot three-dimensional seepage-stress coupling model, with the open-cut section on the south bank of the Jinan Yellow River Tunnel Project as the engineering field test. This indicates the following: (1) the maximum horizontal displacement of the diaphragm wall occurred in the fifth excavation stage, and a horizontal brace effectively controlled the inward horizontal displacement of the foundation pit; (2) considering the effect of seepage in the soft soil foundation, the maximum vertical displacement of the ground surface at each excavation stage occurred adjacent to the underground continuous wall. As the depth of the foundation pit increased, the vertical surface settlement decreases gradually in the direction away from the excavation face; (3) considering the seepage conditions, within each interval of excavation of the foundation pit, the horizontal displacement of the continuous underground wall and ground settlement declined; and (4) the numerical simulation and field monitoring data were in good agreement. Under the conditions of accurate model simplification and parameter selection, numerical simulations can adequately forecast conditions of the actual project. |
| format | Article |
| id | doaj-art-8f854bb1f3514d5380378ac4fc1527a2 |
| institution | Kabale University |
| issn | 1468-8115 1468-8123 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-8f854bb1f3514d5380378ac4fc1527a22025-02-03T01:27:07ZengWileyGeofluids1468-81151468-81232021-01-01202110.1155/2021/55590095559009Numerical Simulation of Soil Displacement and Settlement in Deep Foundation Pit Excavations Near WaterZhongjing Hu0Qingbiao Wang1Shuo Yang2Zhenyue Shi3Bo Liu4Hongxu Song5Fuqiang Wang6College of Safety and Environmental Engineering (College of Safety and Emergency Management), Shandong University of Science and Technology, Qingdao 266590, ChinaCollege of Resources, Shandong University of Science and Technology, Tai’an 271019, ChinaCollege of Civil Engineering and Architecture, Shandong University of Science and Technology, Qingdao 266590, ChinaCollege of Safety and Environmental Engineering (College of Safety and Emergency Management), Shandong University of Science and Technology, Qingdao 266590, ChinaShandong Zhengyuan Geological Resources Exploration Co. Ltd, Jinan 250101, ChinaCollege of Energy and Mining Engineering, Shandong University of Science and Technology, Qingdao 266590, ChinaCollege of Civil Engineering and Architecture, Shandong University of Science and Technology, Qingdao 266590, ChinaAdvancing urbanization in China requires large-scale high-rise construction and underground transportation projects. Consequently, there is an increasing number of deep foundation pits adjacent to water bodies, and accidents occur frequently. This study uses a numerical simulation method to study the stability of the deep foundation pit near water based on the Biot three-dimensional seepage-stress coupling model, with the open-cut section on the south bank of the Jinan Yellow River Tunnel Project as the engineering field test. This indicates the following: (1) the maximum horizontal displacement of the diaphragm wall occurred in the fifth excavation stage, and a horizontal brace effectively controlled the inward horizontal displacement of the foundation pit; (2) considering the effect of seepage in the soft soil foundation, the maximum vertical displacement of the ground surface at each excavation stage occurred adjacent to the underground continuous wall. As the depth of the foundation pit increased, the vertical surface settlement decreases gradually in the direction away from the excavation face; (3) considering the seepage conditions, within each interval of excavation of the foundation pit, the horizontal displacement of the continuous underground wall and ground settlement declined; and (4) the numerical simulation and field monitoring data were in good agreement. Under the conditions of accurate model simplification and parameter selection, numerical simulations can adequately forecast conditions of the actual project.http://dx.doi.org/10.1155/2021/5559009 |
| spellingShingle | Zhongjing Hu Qingbiao Wang Shuo Yang Zhenyue Shi Bo Liu Hongxu Song Fuqiang Wang Numerical Simulation of Soil Displacement and Settlement in Deep Foundation Pit Excavations Near Water Geofluids |
| title | Numerical Simulation of Soil Displacement and Settlement in Deep Foundation Pit Excavations Near Water |
| title_full | Numerical Simulation of Soil Displacement and Settlement in Deep Foundation Pit Excavations Near Water |
| title_fullStr | Numerical Simulation of Soil Displacement and Settlement in Deep Foundation Pit Excavations Near Water |
| title_full_unstemmed | Numerical Simulation of Soil Displacement and Settlement in Deep Foundation Pit Excavations Near Water |
| title_short | Numerical Simulation of Soil Displacement and Settlement in Deep Foundation Pit Excavations Near Water |
| title_sort | numerical simulation of soil displacement and settlement in deep foundation pit excavations near water |
| url | http://dx.doi.org/10.1155/2021/5559009 |
| work_keys_str_mv | AT zhongjinghu numericalsimulationofsoildisplacementandsettlementindeepfoundationpitexcavationsnearwater AT qingbiaowang numericalsimulationofsoildisplacementandsettlementindeepfoundationpitexcavationsnearwater AT shuoyang numericalsimulationofsoildisplacementandsettlementindeepfoundationpitexcavationsnearwater AT zhenyueshi numericalsimulationofsoildisplacementandsettlementindeepfoundationpitexcavationsnearwater AT boliu numericalsimulationofsoildisplacementandsettlementindeepfoundationpitexcavationsnearwater AT hongxusong numericalsimulationofsoildisplacementandsettlementindeepfoundationpitexcavationsnearwater AT fuqiangwang numericalsimulationofsoildisplacementandsettlementindeepfoundationpitexcavationsnearwater |