钢桥构造的疲劳开裂分析  

Analysis of Fatigue Cracking of Steel Bridge Structures

作　　者：党志杰[1] 

机构地区：[1]中铁大桥局集团桥科院有限公司,湖北武汉430034

出　　处：《桥梁建设》2009年第A02期23-25,共3页Bridge Construction

摘　　要：给出疲劳应力截止限的概念,并指出只有重复作用的活载应力高于疲劳应力截止限,钢桥构造才可能出现疲劳开裂现象;对149个钢桥构造开裂实例进行分析,分析表明,完善的整体及细节设计和优良的制造质量是避免钢桥构造开裂的关键。The concept of the fatigue stress cutoff limiting is given and it is pointed out that the fatigue cracking will possibly occur in steel bridge structures only when the live load stress of repeated action is greater than the fatigue stress cutoff limiting. Totally 149 cracking examples of the steel bridge structures are analyzed and the results of the analysis demonstrate that the perfect design of the integrity and details and the good manufacturing quality are critical to the avoidance of the cracking.

关 键 词：钢桥 构造 疲劳开裂 疲劳应力截止限 开裂实例 

分 类 号：U448.36[建筑科学—桥梁与隧道工程] U441.4[交通运输工程—道路与铁道工程]