Wind-induced Response of Cable-stayed Bridge with Consideration of Reynolds Number Effect
Wind-induced Response of Cable-stayed Bridge with Consideration of Reynolds Number Effect
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发表时间：
2009
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通讯作者：
Han Wan-shui
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作者：
Han Wan-shui
为了研究静力系数的雷诺数对斜拉桥静风和风荷载引起的抖振响应的影响，采用两种不同尺寸的主梁截面模型进行风洞试验，测定主梁的静力系数，并以苏通大桥为例，采用有限元法计算了低雷诺数和高雷诺数下的静动力响应研究结果表明，雷诺数效应对斜拉桥抖振响应的影响不可忽略，在斜拉桥静力和风振响应分析中放松雷诺数效应可能会导致危险的结果。
In order to investigate the Reynolds number effect of static coefficients on the static wind and buffeting responses induced by wind load in cable-stayed bridges,two different size sectional models of main girder were used to measure the static coefficients of main girder in wind tunnel test.The static and dynamic responses of Sutong Bridge were calculated as an example by use of finite element method at lower Reynolds number and higher Reynolds number respectively.The research results indicate that the Reynolds number effect on buffeting response of cable-stayed bridge can't be neglected.Relaxing of Reynolds number effect in analysis of static and buffeting responses induced by wind loads in cable-stayed bridges may cause dangerous results.