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Theoretic and testing investigation of wind-rain coupling loads on bridges and structures
Author(s): 
Pages: 507-517
Year: Issue:  4
Journal: Journal of Vibration Engineering

Keyword:  cablewind and rain coupling actionaerodynamic loadsstructural performancewind tunnel tests;
Abstract: 采用理论分析及试验研究方法对风雨共同作用下的结构荷载与响应进行了研究.首先在确定风雨联合作用概率模型的基础上通过对降雨作用特性的分析,比较了雨滴冲击作用模型和空气密度等效变化模型对建筑结构等效静力的作用性能;其次,基于高精度风雨耦合荷载环境模拟试验设备,进行了风雨定常气动力荷载模型高频天平测力试验,研究了简单几何形体的风雨定常荷载变化规律;然后,采用二维悬挂系统测振试验方法,研究了风雨非定常气动力荷载模型及其结构振动响应特点;最后,对缆索承重桥梁拉索风雨激振现象进行耦合荷载环境参数精细化控制试验,揭示了拉索空间姿态、拉索动力特性、来流风速和不同雨强组合等条件对拉索风雨振的影响规律.
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