摘要
随着桥梁设计和施工水平的不断提高,现代悬索桥的跨径纪录不断刷新,改善抗风稳定性能是大跨径悬索桥设计和建造中的一个重要课题。分析了悬索桥各类风致振动的振动机制及对桥梁的不利影响,从提高系统整体刚度、控制结构振动特性和改善断面气动性能3个方面介绍了各类抗风措施及其工作原理,简述了减振装置的构造和应用实例,并对风洞试验的方法及意义进行讨论。这些结果将有助于我国2 000 m以上大跨径悬索桥抗风稳定性的设计和研究。
With the improvement of the bridge design and construction technology,the record of modern suspension bridge＇s span is refreshed continually.Therefore,Aerodynamic stability becomes the most important factor in designing and constructing suspension bridges.In order to guarantee wind-resistant stabilization of long-span suspension bridge,the dynamic behavior and the wind-resistant stability are analyzed by the experiment of wind-tunne1,and the method and meaning of wind tunnel experiment are also highlighted.The influence of the preventive measures on suspension bridge is explored,and the reasonable structural system of long-span suspension bridges is also discussed.The results will be valuable in designing and analyzing suspension bridge which span is over 2 000 meters long.
出处
《后勤工程学院学报》
2011年第5期17-21,共5页
Journal of Logistical Engineering University
关键词
大跨径悬索桥
抗风稳定性
阻尼器
抗风构件
风洞试验
long-span suspension bridge
wind-resistant stabilization
damper
wind-resistant structure
wind tunnel test
