基于断裂力学的铆接钢桥疲劳寿命研究  

Research on Fatigue Life of Riveted Steel Bridges Based on Fracture Mechanics

作　　者：袁佩[1] 

机构地区：[1]招商局重庆交通科研设计院有限公司,重庆400067

出　　处：《公路交通技术》2013年第6期66-69,75,共5页Technology of Highway and Transport

摘　　要：在役钢桥的疲劳问题日益突出,传统疲劳分析方法的准确性依赖于桥梁受载历史,交通量不断变化使得受载历史不易获取,而断裂力学分析方法则可以避开这一难题。基于断裂力学原理,研究铆接钢桥的疲劳寿命,并将断裂力学分析方法应用于重庆某铆接钢桥疲劳寿命的计算。The fatigue problems of in-service steel bridges are increasingly prominent, the accuracy of traditional fatigue analysis methods rely on loading history of bridges, and continuous changes of traffic volume lead to difficulty of obtaining loading history, while the fracture mechanics analysis method can avoid such problem. Based on the principle of fracture mechanics, this paper researches the fatigue life of riveted steel bridges and applies the fracture mechanics analysis method to calculation of the fatigue life of some riveted steel bridge in Chongqing.

关 键 词：断裂力学 铆接钢桥 疲劳寿命 

分 类 号：U448.36[建筑科学—桥梁与隧道工程]