摘要
以肇庆市阅江大桥工程为背景,采用Davenport脉动风速谱,基于自回归模型方法模拟拉索水平脉动风速时程.利用WORKBENCH针对上述计算的风场情况,考虑最易产生风雨激振现象工况,对考虑流固耦合钢索及CFRP拉索风雨激振进行数值模拟.计算结果表明,CFRP索对比传统钢索而言,在风雨激振响应上表现更好,但CFRP索的振动频率更快.
Based on the construction of Yue Jiang Bridge, adapting Davenport spectrum for fluctuating wind, the horizontal wind velocity time series are simulated by the auto regressive model. Combining the wind field condition, the raiwwind induced vibration on fluid-structure interaction for steel cable and CFRP cable is calculated and simulated by considering the condition that is most likely to produce rain-wind induced vibration. The results show that the performance of CFRP cable is better than that of conventional cable, but the vibration frequency of CFRP cable is faster.
出处
《武汉理工大学学报(交通科学与工程版)》
2017年第3期443-447,457,共6页
Journal of Wuhan University of Technology(Transportation Science & Engineering)
基金
国家自然科学基金项目(51408446)
安徽省高校自然科学重点项目(KJ2016A448)资助
关键词
自回归模型
结构风场
流固耦合
CFRP拉索
风雨激振
auto regressive model
wind field
fluid structure interaction
CFRP cable
rain-wind in- duced vibration