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中国公路学报
CHINA JOURNAL OF HIGHWAY AND TRANSPORT
2006 Vol.19 No.5 P.59-64

数字化期刊

缆索承重桥梁的颤振可靠性

许福友  陈艾荣  张建仁 

摘 要:基于公路桥梁抗风设计规范校准得到极值风速变异系数约为0.13;由苏通大桥桥址风速统计资料计算得到极值风速变异系数在0.13~0.14之间.提出了计算结构可靠指标的随机梯度算法,采用该算法从多种角度分析了变量分布类型及统计特征对苏通大桥颤振可靠指标计算结果的影响.计算结果表明:极值风速变异系数宜取为0.15;随机梯度算法思路简单,具有很好的稳定性,计算效率高.
关键词:桥梁工程;缆索承重桥梁;随机梯度算法;颤振可靠性;极值风速
分类号:U441.3  文献标识码:A

文章编号:1001-7372(2006)05-0059-06

Flutter Reliability of Cable Supported Bridge

XU Fu-you  CHEN Ai-rong  ZHANG Jian-ren 

基金项目:国家自然科学基金项目(50478109)
作者简介:许福友(1976-),男,山东聊城人,大连理工大学讲师,工学博士,E-mail:xufuyou8796@sina.com.
作者单位:许福友(同济大学,桥梁工程系,上海,200092;大连理工大学,土木水利学院,辽宁,大连,116024) 
     陈艾荣(同济大学,桥梁工程系,上海,200092) 
     张建仁(长沙理工大学,桥梁与结构工程学院,湖南,长沙,410076) 

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收稿日期:2005年12月9日

出版日期:2006年9月30日