西南交通大学学报2012，Vol.47Issue(2)：218-223,264,7.DOI:10.3969/j.issn.0258-2724.2012.02.008
基于节段模型试验的悬索桥涡振抑振措施
Mitigation Measures of Vortex-Induced Vibration of Suspension Bridge Based on Section Model Test
摘要
Abstract
In order to investigate the vortex-induced vibration performance of long-span suspension bridges and propose effective mitigation measures, a long-span suspension bridge with steel-box girder was taken as an engineering example. By a section model wind tunnel test with a scale of 1 :20, the effects of railings, maintenance rail and guide vane on the vortex-induced vibration performance of main girder at a low damping were investigated, and the mitigation measure of setting guide vane inside the maintenance rail was applied in bridge engineering. In addition, the mechanism of the vortex-induced vibration was discussed based on the test phenomenon. The research results show that the vortex-induced vibration can be effectively mitigated by the above measure, and the mitigation measure makes the aerodynamic shape of the main girder be more reasonable. Furthermore, the structure for this measure is relatively simple to be convenient for engineering application.关键词
风洞试验/抑振措施/导流板/涡激振动Key words
wind tunnel test/ mitigation measure/ guide vane/ vortex-induced vibration分类
交通工程引用本文复制引用
孙延国,廖海黎,李明水..基于节段模型试验的悬索桥涡振抑振措施[J].西南交通大学学报,2012,47(2):218-223,264,7.基金项目
国家自然科学基金资助项目(50978223) （50978223）
