碩士 / 國立交通大學 / 交通運輸研究所 / 70 / As the fact shows that the tidal range in the mid-west coast of Taiwan is higher than that of the other coast. Each time, at ebb and flow, there usually ocoures residual water level produced by the resistance reaction from quay wall foundation in the back side area of wharf which causes residual water pressures and seepage forces and thus also generates quick sands and boiling affections against the foundation ot quay wall that would damage the safety of the wharf itself.
According to current wharf designs, the elevation of residual water level has been estimated by experiences. Henceforth, the research purpose of this thesis was proposed to investigate the residual water level situation presented in the back side area of an established wharf. During this reaearch operation, observation well method was used to observe the variation of residual water level and it accompanled with a lot of references obtained for siudying various structure types of wharf. Tais research was planned to draw out a chart on the relevance of water elevation between the front and back sides of wharf quay wall which was provided for studying the influencing factors and the design criteria on residual water level. Neanwhile, a flow net was drawn for use in calculating the residual water pressures and seepage forces and it was also used for analysing the reaction forces initiated by residual water level in connection with wharf designs. By this research approach, it can help designer to study out the boiling situntion which may endanger the safety of wharf.
For safety requirements, some preventive and improvement measures were proposed on the above mentioned problems. Additionally, in this thesis, corrective designs on wharf cross section were also provided for designer as references.
| Identifer | oai:union.ndltd.org:TW/070NCTU3118013 |
| Date | January 1982 |
| Creators | 簡正衡 |
| Contributors | 侯和雄 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 83 |
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