| 大型桥梁结构入水砰击中兴波及压力特性研究 |
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| 引用本文： | 纪东方,修改.大型桥梁结构入水砰击中兴波及压力特性研究[J].科学技术与工程,2009,9(21). |
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| 作者姓名： | 纪东方 修改 |
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| 作者单位： | 华南理工大学土木与交通学院,广州,510640 |
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| 摘 要： | 通过物理模型试验的方法研究了广东九江大桥被撞坍塌处某段桥梁结构由一定高度坠落砰击入水的整个过程,着重分析了砰击引起的兴波特性及砰击压力特性.试验结果表明,结构砰击入水整个过程中产生了两次兴波,后续兴波要比初始兴波大;由于桥梁结构具有特殊的砰击面,入水砰击引起的砰击压力特性与其他结构(如平底结构)是有所不同的,特别是砰击压力峰值的分布规律.
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| 关 键 词： | 桥梁结构 砰击 模型试验 压力特性 兴波 |
| 收稿时间： | 2009/7/28 0:00:00 |
| 修稿时间： | 9/25/2009 5:59:39 PM |
Study on the characteristics of wave-making and pressure in the slamming of a large bridge structure |
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| JI Dong-fang,ZHU Liang-sheng.Study on the characteristics of wave-making and pressure in the slamming of a large bridge structure[J].Science Technology and Engineering,2009,9(21). |
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| Authors: | JI Dong-fang ZHU Liang-sheng |
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| Institution: | South China University of Technology,South China University of Technology,School of Civil Engineering and Transportation, South China University of Technology |
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| Abstract: | By means of physical model test, the whole slamming and entry-water process for a section of the collapsed Guangdong JiuJiang Bridge freely falling from a certain height are investigated, and the characteristics of wave-making and pressure variation on bottom of the bridge model structure under the slamming are mainly investigated. As the test results indicate that there generated two wave-making in the whole process, and the former is larger than the latter. As be of a special bottom slamming face, the pressure characteristics of the model structure are not the same as the other structures (such as the flat-bottom structure), especially the distribution of pressure peak value under the slamming. |
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| Keywords: | bridge structure slamming model test pressure characteristic wave-making |
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