Use of suction caissons for seawall construction
With rising sea level and demand for more nearshore infrastructures, the current methods for seawall construction may no longer be sustainable. Alternative seawall construction methods need to be developed. When seawall or other coastal defense systems are constructed on soft marine deposits, suctio...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2023
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/164629 |
| _version_ | 1826119885905723392 |
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| author | Chen, Hao Chu, Jian Guo, Wei Wu, Shifan |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Chen, Hao Chu, Jian Guo, Wei Wu, Shifan |
| author_sort | Chen, Hao |
| collection | NTU |
| description | With rising sea level and demand for more nearshore infrastructures, the current methods for seawall construction may no longer be sustainable. Alternative seawall construction methods need to be developed. When seawall or other coastal defense systems are constructed on soft marine deposits, suction caissons are feasible to be installed into marine clay layer as foundations. Using suction caissons as part of the foundation for seawall might offer a more economical solution when the water depth is relatively deep. A conceptual design and related construction procedure for the seawall constructed on suction caisson foundation is proposed in this paper for a land reclamation project. The design issues for the seawall constructed on soft marine deposits are discussed. An analytical method for analyzing the stability of the seawall on suction caisson foundation is also proposed based on a limit equilibrium method. The proposed analytical method is verified using Plaxis 2D finite element analysis (FEA) which has been verified using model tests of suction caisson in soft clay beforehand. The results from the finite element simulation are consistent with those from the analytical method. The horizontal deflection of seawall is about 1/75 of the seawall height. |
| first_indexed | 2024-10-01T05:07:26Z |
| format | Journal Article |
| id | ntu-10356/164629 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:07:26Z |
| publishDate | 2023 |
| record_format | dspace |
| spelling | ntu-10356/1646292023-02-07T01:11:43Z Use of suction caissons for seawall construction Chen, Hao Chu, Jian Guo, Wei Wu, Shifan School of Civil and Environmental Engineering Engineering::Civil engineering Suction Caisson Seawall With rising sea level and demand for more nearshore infrastructures, the current methods for seawall construction may no longer be sustainable. Alternative seawall construction methods need to be developed. When seawall or other coastal defense systems are constructed on soft marine deposits, suction caissons are feasible to be installed into marine clay layer as foundations. Using suction caissons as part of the foundation for seawall might offer a more economical solution when the water depth is relatively deep. A conceptual design and related construction procedure for the seawall constructed on suction caisson foundation is proposed in this paper for a land reclamation project. The design issues for the seawall constructed on soft marine deposits are discussed. An analytical method for analyzing the stability of the seawall on suction caisson foundation is also proposed based on a limit equilibrium method. The proposed analytical method is verified using Plaxis 2D finite element analysis (FEA) which has been verified using model tests of suction caisson in soft clay beforehand. The results from the finite element simulation are consistent with those from the analytical method. The horizontal deflection of seawall is about 1/75 of the seawall height. 2023-02-07T01:11:43Z 2023-02-07T01:11:43Z 2022 Journal Article Chen, H., Chu, J., Guo, W. & Wu, S. (2022). Use of suction caissons for seawall construction. Ocean Engineering, 266(Part 1), 112632-. https://dx.doi.org/10.1016/j.oceaneng.2022.112632 0029-8018 https://hdl.handle.net/10356/164629 10.1016/j.oceaneng.2022.112632 2-s2.0-85139256554 Part 1 266 112632 en Ocean Engineering © 2022 Elsevier Ltd. All rights reserved. |
| spellingShingle | Engineering::Civil engineering Suction Caisson Seawall Chen, Hao Chu, Jian Guo, Wei Wu, Shifan Use of suction caissons for seawall construction |
| title | Use of suction caissons for seawall construction |
| title_full | Use of suction caissons for seawall construction |
| title_fullStr | Use of suction caissons for seawall construction |
| title_full_unstemmed | Use of suction caissons for seawall construction |
| title_short | Use of suction caissons for seawall construction |
| title_sort | use of suction caissons for seawall construction |
| topic | Engineering::Civil engineering Suction Caisson Seawall |
| url | https://hdl.handle.net/10356/164629 |
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