固有缺陷法在钢管混凝土拱桥管节点疲劳寿命中的应用研究  

RESEARCH ON FATIGUE LIFE OF CFST ARCH BRIDGE TUBULAR JOINTS BASED ON THE METHOD OF NATURAL FLAW

作　　者：张家元[1] 范文理[2] 丁望星[1] 艾智能[3] 

机构地区：[1]湖北省交通规划设计院,武汉430051 [2]西南交通大学,成都610031 [3]铁道第二勘察设计院,成都610031

出　　处：《工业建筑》2009年第1期128-130,137,共4页Industrial Construction

摘　　要：通过模型试验比较钢管混凝土管节点和空心管节点的疲劳破坏行为,得出钢管混凝土管节点和空心管节点的疲劳破坏形态基本一致;提出用固有缺陷法预测钢管混凝土拱桥管节点疲劳寿命的方法,并用实例计算了钢管混凝土管节点的疲劳寿命,将该寿命与试验结果进行比较,验证了固有缺陷法在一定范围内预测钢管混凝土管节点疲劳寿命的合理性。It is compured the fatigue failure mode of concrete-filled steel tube（CFST） joint to that of hollow tube joint using model test, it is known that there is a basic agreement between the two. It is also proposed a way of predicting the fatigue life of CFST arch bridge tubular joints based on the method of natural flaw. And the rationality of the method in a certain range is verified by a real example.

关 键 词：钢管混凝土 管节点 疲劳寿命 固有缺陷法 断裂力学 

分 类 号：U441.4[建筑科学—桥梁与隧道工程] U448.22[交通运输工程—道路与铁道工程]