Stability of Nonuniform Large Geotextile-Reinforced Cofferdam under Seepage and Excavation Effects
This paper investigates the failure mechanism of nonuniform large geotextile-reinforced cofferdam under seepage and excavation effects on soft sediments. A numerical model is established and validated with available testing results. Then, parametric studies are carried out to investigate the potenti...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Published: |
ASCE
2022
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| Online Access: | http://hdl.handle.net/20.500.11937/89762 |
| _version_ | 1848765280989216768 |
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| author | Lu, Xiaochun Luo, Yue Ming, Huajun Zhou, Mi Zhang, Xihong Liu, Dingwei |
| author_facet | Lu, Xiaochun Luo, Yue Ming, Huajun Zhou, Mi Zhang, Xihong Liu, Dingwei |
| author_sort | Lu, Xiaochun |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | This paper investigates the failure mechanism of nonuniform large geotextile-reinforced cofferdam under seepage and excavation effects on soft sediments. A numerical model is established and validated with available testing results. Then, parametric studies are carried out to investigate the potential influence factors. This study found that the difference between the upstream and downstream water levels and the excavation depth both have significant influences on the stability of cofferdams, where excavation is the key influence factor affecting the stability of the cofferdam. Numerical results revealed that the safety factor could reduce by about 20% with excavation of about 1.5 m. An empirical equation is proposed for quantitative prediction of the stability of geotextile-reinforced cofferdams. A thorough understanding about the failure mechanisms of cofferdams as well as an empirical formula for predicting the stability is concluded in this study, which could provide engineering guide for flexible foundations reinforced by geotextiles. |
| first_indexed | 2025-11-14T11:32:45Z |
| format | Journal Article |
| id | curtin-20.500.11937-89762 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T11:32:45Z |
| publishDate | 2022 |
| publisher | ASCE |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-897622023-01-31T01:32:04Z Stability of Nonuniform Large Geotextile-Reinforced Cofferdam under Seepage and Excavation Effects Lu, Xiaochun Luo, Yue Ming, Huajun Zhou, Mi Zhang, Xihong Liu, Dingwei This paper investigates the failure mechanism of nonuniform large geotextile-reinforced cofferdam under seepage and excavation effects on soft sediments. A numerical model is established and validated with available testing results. Then, parametric studies are carried out to investigate the potential influence factors. This study found that the difference between the upstream and downstream water levels and the excavation depth both have significant influences on the stability of cofferdams, where excavation is the key influence factor affecting the stability of the cofferdam. Numerical results revealed that the safety factor could reduce by about 20% with excavation of about 1.5 m. An empirical equation is proposed for quantitative prediction of the stability of geotextile-reinforced cofferdams. A thorough understanding about the failure mechanisms of cofferdams as well as an empirical formula for predicting the stability is concluded in this study, which could provide engineering guide for flexible foundations reinforced by geotextiles. 2022 Journal Article http://hdl.handle.net/20.500.11937/89762 10.1061/IJGNAI.GMENG-7707 ASCE restricted |
| spellingShingle | Lu, Xiaochun Luo, Yue Ming, Huajun Zhou, Mi Zhang, Xihong Liu, Dingwei Stability of Nonuniform Large Geotextile-Reinforced Cofferdam under Seepage and Excavation Effects |
| title | Stability of Nonuniform Large Geotextile-Reinforced Cofferdam under Seepage and Excavation Effects |
| title_full | Stability of Nonuniform Large Geotextile-Reinforced Cofferdam under Seepage and Excavation Effects |
| title_fullStr | Stability of Nonuniform Large Geotextile-Reinforced Cofferdam under Seepage and Excavation Effects |
| title_full_unstemmed | Stability of Nonuniform Large Geotextile-Reinforced Cofferdam under Seepage and Excavation Effects |
| title_short | Stability of Nonuniform Large Geotextile-Reinforced Cofferdam under Seepage and Excavation Effects |
| title_sort | stability of nonuniform large geotextile-reinforced cofferdam under seepage and excavation effects |
| url | http://hdl.handle.net/20.500.11937/89762 |