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.
出处
《桥梁建设》
EI
CSCD
北大核心
2009年第A02期23-25,共3页
Bridge Construction
关键词
钢桥
构造
疲劳开裂
疲劳应力截止限
开裂实例
steel bridge
structure
fatigue cracking
fatigue stress cutoff limiting
cracking example
