碩士 / 國立成功大學 / 土木工程學系 / 103 / Suction caissons are considered as an alternative foundations for offshore wind turbines in Taiwan. This study presents numerical analyses of the installation process and bearing behavior of monopod suction caisson in sand with a finite difference technique. The results are validated with field test results in literature. It is shown that the application of suction inside the caisson is the main source for the penetration of foundations, and the soil stress distribution is symmetrical during the installation procedure. Under combined vertical, horizontal and moment loadings, the bearing capacity, sliding and overturning stability of foundations are analyzed. Among the three modes, the overturning stability is the dominated one for suction caissons stability. Comparisons with field testing results, show that the ultimate capacities from two dimension numerical simulations are smaller than the capacities of field tests.
| Identifer | oai:union.ndltd.org:TW/103NCKU5015074 |
| Date | January 2015 |
| Creators | Hsuan-ChiHung, 洪萱淇 |
| Contributors | Wen-Jong Chang, 張文忠 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 74 |
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