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为研究主梁三分力系数雷诺数效应对斜拉桥的静风响应及抖振响应的影响,分别采用大、小2种比例主梁节段模型的风洞试验测得主梁三分力系数;并用结构有限元方法,以苏通大桥为背景,分析了高雷诺数和低雷诺数时斜拉桥的静风响应和抖振响应。研究结果表明:雷诺数效应对斜拉桥抖振效应有不可忽略的影响;忽略主梁雷诺数效应的斜拉桥静风响应和抖振响应分析可能会导致偏危险的结果。
In order to study the Reynolds number effect of main third-part force coefficient on the static response and the buffeting response of cable-stayed bridge, the third part force coefficient The static response and the buffeting response of cable-stayed bridge with high Reynolds number and low Reynolds number are analyzed by means of structural finite element method and Sutong Bridge. The results show that Reynolds number effect can not neglect the chattering effect of cable-stayed bridge. The analysis of static response and chattering response of cable-stayed bridge, which neglects the Reynolds number effect of main girder, may lead to partial risk.