用于大跨斜拉桥拉索疲劳可靠度分析荷载的研究  

Study on Load for Fatigue Reliability Analysis of Cables of Large-Span Cable-Stayed Bridge

作　　者：谭冬梅[1] 陈杰[1] 瞿伟廉[1] 

机构地区：[1]武汉理工大学道路桥梁与结构工程湖北省重点实验室,武汉430070

出　　处：《武汉理工大学学报》2015年第6期54-59,共6页Journal of Wuhan University of Technology

基　　金：国家自然科学基金(51408452);中央高校基本科研业务费专项资金(2013-Ⅳ-035);国家重点实验室开放基金(2013B114)

摘　　要：以苏通大桥为例分析了在单一疲劳车、汽车-超20级及随机车流3种不同的荷载工况下的斜拉索疲劳可靠度,比较3种不同的加载方式对斜拉索疲劳可靠度的影响。结果表明:单一疲劳车加载斜拉索的疲劳可靠度较后两种加载结果要大得多,对斜拉索疲劳设计不利,对于大跨度斜拉桥而言选择多车模型加载更符合实际情况。Using Sutong Bridge as an example to analyse fatigue reliability of cables under a single fatigue car,car-over20 and random traffic three different loads and compare the results between three different loading ways.The results show that：the fatigue reliability of cables under a single fatigue car the car is much bigger than the latter two and this is unfavorable to cable fatigue design,in terms of choice for large-span cable-stayed bridge multi-car model is more realistic.

关 键 词：疲劳荷载 大跨度斜拉桥 斜拉索 疲劳可靠度 

分 类 号：TG156[金属学及工艺—热处理]