碩士 / 國立臺灣海洋大學 / 河海工程學系 / 97 / Taiwan is in the the subtropical climate area of the Northern Hemisphere, there have many typhoons process and heavy rain by the southwest current of air in summer. According to statistic from the Central Weather Bureau the result display of analysis, Taiwan every year suffered 3.5 typhoons on the average. Typhoon brought violently billow directly encroaches upon coast and inland and makes the coast eroded, the coast structure break etc. And Taiwan land is crowded, the land resource more and more seems to be shortage along with the development, the development even had already extended to a tide tape and shallow waters, parts of coast lands present a high development.
In the ocean environment, the function of the wave, ocean current and earthquake or other outside force will make the sea bed taken to an unsteady phenomenon. Many researches exhibit, the instability of sea bed extensively distributes in the offshore region, from the shallow water region, near the shore region and mainland slope even deeper bottom of sea bed. And the instability of the sea bed soil often accompany with sea structure to sink and break.
Taiwan the maritime engineering is gradually mature in recent years, the letter cable, the fiber-optic, electric power cable and sea bed pipe line and a land reclaimed from the sea, sea wind power etc. various maritime engineering at Taiwan surround the waters keep on constructing. However, the international design standard used, mostly carry on an outside force design with the angle of ocean engineering consideration, match area environments again of stabilization analysis. The near the shore structure such as harbor and breakwater etc. of Taiwan, whenever the typhoon strikes, makes the structure sunk to sink, the side move and dump etc. These the structure breaks of become because of, in addition to having something to do with directly suffering by a outside force, also and the sea bed soil of structure lower part whether stabilizing is vitally related.
In this study, used the GeoStudio2007 software program combine with dynamic triaxial test and soil general physical property test result, use the standpoint of the ocean earth to simulate the stability of seabed and pipe line stability of seabed pipe line while suffering by wave loading. Also by change a force condition and lay depth, inquire into these influences of the factor upon the pipe line stability, provide engineer as the reference of design the ocean structure in the further, to decrease structure damage, and be advantageous to the design and build the ocean engineering in future.
| Identifer | oai:union.ndltd.org:TW/097NTOU5192067 |
| Date | January 2009 |
| Creators | Sheng-Ze Juang, 莊昇澤 |
| Contributors | Lien-Kwei Chien, 簡連貴 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 127 |
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