Multi-Factor Influence Analysis on the Liquefaction Mitigation of Stone Columns Composite Foundation
To optimize the design of stone columns composite foundation for liquefiable ground improvement in the Tibar Bay Port Project, a 3D Finite Element (FE) analysis is implemented on the earthquake response and liquefaction mitigation effect. Nine improvement schemes are designed with the orthogonal des...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-07-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/12/14/7308 |
| _version_ | 1797407505796562944 |
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| author | Pingshan Chen Weiqing Lyu Xiaocong Liang Jiangxu Deng Chong Li Yong Yuan |
| author_facet | Pingshan Chen Weiqing Lyu Xiaocong Liang Jiangxu Deng Chong Li Yong Yuan |
| author_sort | Pingshan Chen |
| collection | DOAJ |
| description | To optimize the design of stone columns composite foundation for liquefiable ground improvement in the Tibar Bay Port Project, a 3D Finite Element (FE) analysis is implemented on the earthquake response and liquefaction mitigation effect. Nine improvement schemes are designed with the orthogonal design method. Taking peak ground acceleration and peak excess pore pressure ratio as the target indicators, the influences of four factors, including diameter, replacement ratio, stiffness, permeability ratio, of stone columns are analyzed by means of range analysis, and subsequently, the optimal ground improvement design is obtained. The analysis results indicate that the responses of ground acceleration and excess pore pressure ratio are relatively sensitive to stone columns’ permeability ratio and a little sensitive to the replacement ratio. The stiffness and diameter ranging in the prescribed boundary only have negligible effect. The mitigation effect of drainage is rather significant when the ratio of the stone columns’ permeability to the soils’ permeability is greater than 100. |
| first_indexed | 2024-03-09T03:43:27Z |
| format | Article |
| id | doaj.art-6a3d58c4a6e84c02838b0fc3b91e0088 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T03:43:27Z |
| publishDate | 2022-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-6a3d58c4a6e84c02838b0fc3b91e00882023-12-03T14:37:49ZengMDPI AGApplied Sciences2076-34172022-07-011214730810.3390/app12147308Multi-Factor Influence Analysis on the Liquefaction Mitigation of Stone Columns Composite FoundationPingshan Chen0Weiqing Lyu1Xiaocong Liang2Jiangxu Deng3Chong Li4Yong Yuan5CCCC Fourth Harbor Engineering Institute Co., Ltd., Guangzhou 510230, ChinaSouthern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519082, ChinaCCCC Fourth Harbor Engineering Institute Co., Ltd., Guangzhou 510230, ChinaDepartment of Geotechnical Engineering, Tongji University, Shanghai 200092, ChinaDepartment of Geotechnical Engineering, Tongji University, Shanghai 200092, ChinaDepartment of Geotechnical Engineering, Tongji University, Shanghai 200092, ChinaTo optimize the design of stone columns composite foundation for liquefiable ground improvement in the Tibar Bay Port Project, a 3D Finite Element (FE) analysis is implemented on the earthquake response and liquefaction mitigation effect. Nine improvement schemes are designed with the orthogonal design method. Taking peak ground acceleration and peak excess pore pressure ratio as the target indicators, the influences of four factors, including diameter, replacement ratio, stiffness, permeability ratio, of stone columns are analyzed by means of range analysis, and subsequently, the optimal ground improvement design is obtained. The analysis results indicate that the responses of ground acceleration and excess pore pressure ratio are relatively sensitive to stone columns’ permeability ratio and a little sensitive to the replacement ratio. The stiffness and diameter ranging in the prescribed boundary only have negligible effect. The mitigation effect of drainage is rather significant when the ratio of the stone columns’ permeability to the soils’ permeability is greater than 100.https://www.mdpi.com/2076-3417/12/14/7308liquefiable groundstone columnsorthogonal design methoddynamic response analysisopensees |
| spellingShingle | Pingshan Chen Weiqing Lyu Xiaocong Liang Jiangxu Deng Chong Li Yong Yuan Multi-Factor Influence Analysis on the Liquefaction Mitigation of Stone Columns Composite Foundation Applied Sciences liquefiable ground stone columns orthogonal design method dynamic response analysis opensees |
| title | Multi-Factor Influence Analysis on the Liquefaction Mitigation of Stone Columns Composite Foundation |
| title_full | Multi-Factor Influence Analysis on the Liquefaction Mitigation of Stone Columns Composite Foundation |
| title_fullStr | Multi-Factor Influence Analysis on the Liquefaction Mitigation of Stone Columns Composite Foundation |
| title_full_unstemmed | Multi-Factor Influence Analysis on the Liquefaction Mitigation of Stone Columns Composite Foundation |
| title_short | Multi-Factor Influence Analysis on the Liquefaction Mitigation of Stone Columns Composite Foundation |
| title_sort | multi factor influence analysis on the liquefaction mitigation of stone columns composite foundation |
| topic | liquefiable ground stone columns orthogonal design method dynamic response analysis opensees |
| url | https://www.mdpi.com/2076-3417/12/14/7308 |
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