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无塔非对称人行悬索桥静风稳定性研究

, PP. 99-102

Keywords: 桥梁工程,人行悬索桥,ANSYS,结构抗风,三分力系数

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Abstract:

基于结构稳定性分析方法,借助大型有限元分析程序ANSYS,以某无塔非对称人行悬索桥为实例,建立了4个有限元计算模型,分别对设置有抗风缆的钢桥面板悬索桥结构、有风缆的混凝土桥面板悬索桥结构和不设置抗风缆的钢桥面板悬索桥结构、混凝土桥面板悬索桥结构进行了静风稳定性研究.研究结果表明,质量较大混凝土桥面板比钢桥面板更有利于结构抗风,设置风缆能有效地限制结构在风荷载作用下的横向位移,提高结构失稳风速,研究还发现,若将抗风缆和混凝土桥面板有效地结合最有利于结构抗风,且效果十分明显.

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