碩士 / 淡江大學 / 土木工程學系碩士班 / 95 / This main objective of this thesis is to investigate the effect of triangular edge-fairings on the aerodynamic responses of section models through wind tunnel experiments. The results are then used to predict the aerodynamic responses of the prototype bridge. There are two series of bridge decks in the tests. One is the fixed rectangular section with two triangular edge-fairings on both sides. In this series angles of the fairings are varied. The other is the depths of the rectangular sections are varied with a fixed angle of fairings. There are four section models in each series. The wind tunnel tests include the measurements of the static wind force coefficients and the flutter derivatives in smooth flow and buffeting responses in turbulent flow.
For the series of variations of angles of triangular edge-fairings, the experimental results indicate that the vertical buffeting response decreases as the edge angle increases. However, the trend of the torsional responses is not obvious in this series. The flutter wind speed increases as the edge angle decreases. For the series of variations of deck depths, the vertical buffeting response decreases with width-depth ratio. The torsional buffeting response is not sensitive to width-depth ratio. As expected, the flutter wind speed increases with width-depth ratio. The flutter wind speeds respectively obtained from section model test and calculated based on the flutter derivatives are in good agreement.
| Identifer | oai:union.ndltd.org:TW/095TKU05015028 |
| Date | January 2007 |
| Creators | Hao-Ran Shu, 徐浩然 |
| Contributors | 林堉溢 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 160 |
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