实验流体力学2012，Vol.26Issue(1)：50-54,5.
大跨度斜拉桥钢桥塔基于涡振的气动选型及驰振性能风洞试验研究
Vortex-induced-vibration-based aerodynamic optimization and galloping characteristics of steel pylon in long span cable-stayed bridge by wind tunnel test
摘要
Abstract
Large-scale steel pylon is rarely applied in China, and its wind-induced vibration characteristics are quite different from the conventional concrete pylons. In this paper, an arc shaped steel pylon of long span cable-stayed bridge is regarded as a typical example. According to the possible section types of the steel pylon, comparative experiments with many cases were made by the aeroelastic model wind tunnel test. Through analyzing the results of wind tunnel test, the best section type of the steel pylon is determined. Based on the best section type, the performance of vortex-induced vibration and galloping of the steel pylon are extensively investigated, and the effects of damping ratio on the vortex-induced vibration amplitude and critical wind velocity of galloping are comparatively analyzed. The test results indicate that the pylon has a minimum vortex-induced vibration and a relatively high galloping critical wind velocity when the pylon cross section has a corner cut type of 0. 8m×0. 7m.关键词
大跨度斜拉桥/钢桥塔/气动选型/涡激振动/驰振Key words
long span cable-stayed bridge/ steel pylon/ aerodynamic optimization/ vortex-induced vibration/ galloping分类
建筑与水利引用本文复制引用
李永乐,廖海黎,李佳圣,覃红..大跨度斜拉桥钢桥塔基于涡振的气动选型及驰振性能风洞试验研究[J].实验流体力学,2012,26(1):50-54,5.基金项目
中央高校基本科研业务费专项资金资助(SWJTU10ZT01) （SWJTU10ZT01）
