Numerical Study on the Behavior of Square Stiffened Caissons Penetrating into Normally Consolidated Clay
Significant difference between predicted and measured installation resistance of stiffened suction caissons was identified due to the existing uncertainty regarding the mobilized soil flow mechanisms. This paper describes an extensive investigation of square stiffened caisson penetration in nonhomog...
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2021/1607854 |
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| author | Wei Liu Zhihuai Huang Mi Zhou |
| author_facet | Wei Liu Zhihuai Huang Mi Zhou |
| author_sort | Wei Liu |
| collection | DOAJ |
| description | Significant difference between predicted and measured installation resistance of stiffened suction caissons was identified due to the existing uncertainty regarding the mobilized soil flow mechanisms. This paper describes an extensive investigation of square stiffened caisson penetration in nonhomogeneous clays undertaken through large deformation FE (LDFE) analysis to identify the soil flow mechanisms around and between lateral ring stiffeners. A detailed parametric study has been carried out, exploring a range of nondimensional parameters related to stiffened caisson geometry, caisson roughness, and soil strength. The LDFE results were compared with centrifuge test data in terms of soil flow mechanisms, with good agreement obtained. Two interesting features of soil flow inside the caisson were observed including soil backflow into the gaps between the embedded stiffeners and soil heaving at the surface. It shows that the cavity depth can reach ∼5 m. Finally, simple expressions were proposed for estimating the critical depths of soil backflow and cavity formation. |
| format | Article |
| id | doaj-art-eb6c2ab1b28d4b55801e66bc7d67151a |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-eb6c2ab1b28d4b55801e66bc7d67151a2025-02-03T01:24:45ZengWileyAdvances in Civil Engineering1687-80861687-80942021-01-01202110.1155/2021/16078541607854Numerical Study on the Behavior of Square Stiffened Caissons Penetrating into Normally Consolidated ClayWei Liu0Zhihuai Huang1Mi Zhou2Guangzhou Urban Planning & Design Survey Research Institute, Guangdong Enterprise Key Laboratory for Urban Sensing, Monitoring and Early Warning, Guangzhou 510060, ChinaKey Laboratory of the Pearl River Estuary Regulation and Protection of Ministry of Water Resources, Pearl River Water Resources Research Institute, 80 Tianshou Rd., Guangzhou 510611, ChinaSchool of Civil and Transportation Engineering, South China University of Technology, 381 Wushan Road, Guangzhou 510640, ChinaSignificant difference between predicted and measured installation resistance of stiffened suction caissons was identified due to the existing uncertainty regarding the mobilized soil flow mechanisms. This paper describes an extensive investigation of square stiffened caisson penetration in nonhomogeneous clays undertaken through large deformation FE (LDFE) analysis to identify the soil flow mechanisms around and between lateral ring stiffeners. A detailed parametric study has been carried out, exploring a range of nondimensional parameters related to stiffened caisson geometry, caisson roughness, and soil strength. The LDFE results were compared with centrifuge test data in terms of soil flow mechanisms, with good agreement obtained. Two interesting features of soil flow inside the caisson were observed including soil backflow into the gaps between the embedded stiffeners and soil heaving at the surface. It shows that the cavity depth can reach ∼5 m. Finally, simple expressions were proposed for estimating the critical depths of soil backflow and cavity formation.http://dx.doi.org/10.1155/2021/1607854 |
| spellingShingle | Wei Liu Zhihuai Huang Mi Zhou Numerical Study on the Behavior of Square Stiffened Caissons Penetrating into Normally Consolidated Clay Advances in Civil Engineering |
| title | Numerical Study on the Behavior of Square Stiffened Caissons Penetrating into Normally Consolidated Clay |
| title_full | Numerical Study on the Behavior of Square Stiffened Caissons Penetrating into Normally Consolidated Clay |
| title_fullStr | Numerical Study on the Behavior of Square Stiffened Caissons Penetrating into Normally Consolidated Clay |
| title_full_unstemmed | Numerical Study on the Behavior of Square Stiffened Caissons Penetrating into Normally Consolidated Clay |
| title_short | Numerical Study on the Behavior of Square Stiffened Caissons Penetrating into Normally Consolidated Clay |
| title_sort | numerical study on the behavior of square stiffened caissons penetrating into normally consolidated clay |
| url | http://dx.doi.org/10.1155/2021/1607854 |
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