某大跨度斜拉桥施工阶段的抖振控制措施研究  

Buffeting-Restraining Measures for Long Span Cable-Stayed Bridges under Construction

作　　者：李永乐[1] 周述华[1] 张焕新[2] 

机构地区：[1]西南交通大学土木工程学院,四川成都610031 [2]广东省长大公路工程有限公司,广东番禺511430

出　　处：《西南交通大学学报》2001年第4期374-377,共4页Journal of Southwest Jiaotong University

摘　　要：介绍了桥梁结构抖振响应计算原理，并以某斜拉桥最大双悬臂态为工程实例计算了结构的抖振响应，然后分别对增设抗风临时拉索和利用塔旁托架两种减振措施进行了分析。结果表明，对于大跨斜拉桥的施工阶段，增设抗风临时拉索和利用塔旁托架是两种具有实际工程意义的抖振控制措施。The theory of calculating the buffeting response of bridges is introduced, and the buffeting response of a cable-stayed bridge at maximum twin cantilevers stage during erection is calculated. Two buffeting-restraining measures, setting temporary cables and applying bracket beside tower, are analyzed. The results show that these two measures are efficient and practicable for long span cablestayed bridges under construction.

关 键 词：斜拉桥 施工 抖振控制 结构抖振响应 抗风临时拉索 塔旁托架 

分 类 号：U448.27[建筑科学—桥梁与隧道工程] U445[交通运输工程—道路与铁道工程]