博士 / 國立臺灣海洋大學 / 河海工程學系 / 106 / In this study, a series of hydraulic model tests about the regular wave induced seabed dynamic behavior around a monopile were carried out in a wave flume to investigate the wave force on pile and pore water pressue in seabed soil for the offshore pile foundation. The wave force of the immersed part of a pile and beneath the seabed, and the pore water pressure inside the seabed soil were investigated. Also the theory to evaluate the uplift capacity of belled piles in sandy soil was derived, and a new signal filtering method was developed to solve the noise problem in the experiment. The results show that the uplift capacity of the belled pile seated inlandly is larger than those on seabed which indicated the offshore pile foundation has less stability than constructed on land. The interface between the water and seabed surface contains a transition layer where the pore water pressure inside the seabed and the wave force on the pile varies non-linearly which might caused by the 3-D water flow atound the pile and the suspension or movement of the seabed sand occurred.
This study extends the discussion to the point of view of marine geotechnics, instead of geotechnics or marine engineering, which can more precisely describe the dynamic behavior of seabed soil under the wave actions and is much easier to contribute the research achievement to offshore structure or ocean engineering, especially to the hot pot of current Taiwan, offshore wind farm.
| Identifer | oai:union.ndltd.org:TW/106NTOU5192025 |
| Date | January 2018 |
| Creators | Hsu, Shih-Yu, 許師瑜 |
| Contributors | Lin, Jaw-Guei, 林炤圭 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 202 |
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