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流场状态对渡槽槽体结构风载体形系数的影响
Effect of flowfield state on wind load shape coefficient of aqueduct structure
【摘要】 对矩形和U形渡槽槽体在均匀流场和湍流场中各取不同的高宽比进行了风洞试验,分别测量了槽内有水和无水两种情况下槽体各个部位的风压系数,进而算得了渡槽结构的风载体型系数。试验结果表明,湍流对渡槽槽体结构风载体形系数有显著影响,研究成果可为渡槽结构的抗风设计提供参考依据。
【Abstract】 Based on wind tunnel test, the wind pressure distribution and wind load shape coefficient of the aqueduct structure with different height-width ratio are obtained in uniform and turbulent flows. The results of the wind tunnel tests indicate that the wind pressure distribution and wind load shape coefficient of the rectangular shape and U-shaped aqueduct body are affected by the flowfield state.The findings of this paper give a reference to wind resistance design of aqueduct structure.
【基金】 浙江省教育厅科研项目(200000651);土木工程防灾国家重点实验室开放课题基金资助项目(9714);国家自然科学基金资助项目(59879015)
- 【文献出处】 自然灾害学报 ,Journal of Natural Disasters , 编辑部邮箱 ,2004年03期
- 【分类号】TV32
- 【被引频次】4
- 【下载频次】115