碩士 / 國立中山大學 / 海洋環境及工程學系研究所 / 107 / The objective of this study is the mechanical behavior of suction bucket caisson under loadings. The formulations are derived based on the fundamental theories of ocean hydrodynamic and flow in porous medium and they are solved by the finite-difference methods. A benchmark validation was made before further simulation cases. Several penetration depths were assumed and two different suction pressures were given. Different boundary conditions were tested and the most reasonable one was suggested.
Suction induced stresses in response to various suction pressures and penetration depths were studied. The overall lateral resistance and possible piping potential were investigated.
As the penetration depth increases, the distribution of the normalize excess water pressure gradient inside the caisson wall is aligned with the wall and the excess water pressure at the caisson tip become smaller, whereas the normal stress and shear stress increase as does the penetration depth and the maximums stress is on the caisson tips.
The suction induced stress will lead the friction stress within the caisson decrease, and the outer parts will increase. However, the maximum decrement of the effective soil stress at the inner corner of the caisson tip and the piping potential is 31.52 % in full penetration depth.
| Identifer | oai:union.ndltd.org:TW/107NSYS5282006 |
| Date | January 2018 |
| Creators | Ting-Ting Huang, 黃亭亭 |
| Contributors | Bang-Fuh Chen, 陳邦富 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | en_US |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 0 |
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