长沙理工大学学报：自然科学版2011，Vol.8Issue(4)：49-53,5.
大跨度钢桁拱桥矩形箱式吊杆风振性能
Aerodynamic performance of rectangular box suspenders of large-span steel truss arch bridge
尤庆忠1
作者信息
- 1. 厦深铁路广东有限公司,广东深圳518000
- 折叠
摘要
Abstract
Based on the Rongjiang super-span steel truss arch bridge of Xiamen-Shenzhen Railway,the aerodynamic performances of rectangular box suspenders are investigated with wind tunnel experiments.Three static force coefficients and wind induced vibration of the suspender are measured by force balance and elastically-suspended dynamic tests of sectional models respectively.The results show that the suspenders with rectangular section are susceptible to galloping instability in both weak and strong axis,and rather larger amplitude vibration induced by combined vortex vibration and galloping without distinct separation may take place at a wind speed.The tests with different damping ratios find that the minimum damping for suppressing the wind induced vibration are different in weak axis and strong axis,which will provide references to the design of TMD of rectangular box suspenders.关键词
钢桁拱桥/吊杆/风洞试验/风致振动/阻尼Key words
steel-truss-arch bridge/suspender/wind tunnel experiment/wind-induced vibration/damping分类
交通工程引用本文复制引用
尤庆忠..大跨度钢桁拱桥矩形箱式吊杆风振性能[J].长沙理工大学学报：自然科学版,2011,8(4):49-53,5.
