横风作用下大跨度人行悬索桥振动使用性研究

唐剑明,谢旭

Investigation on vibration serviceability of long-span suspension footbridge under crosswind

Jian-ming TANG,Xu XIE

表 4 增大抗风缆面积后的桥梁动力特性

Tab.4 Bridge dynamic characteristics after increasing area of wind-resistant cable

振型 fnat /Hz C-1 C-2 1阶对称侧弯 0.197 6 0.222 8 1阶反对称侧弯与扭转 0.250 5 0.271 0 1阶反对称竖弯 0.256 8 0.271 0 1阶对称竖弯 0.280 1 0.282 6 1阶对称扭转 0.398 8 0.400 8 1阶反对称扭转 0.416 5 0.433 8