摘要
根据断裂力学分析方法 ,确立塔机结构件焊接节点在循环荷载作用下缺陷及裂纹的扩展速率 ,分析计算缺陷对结构件节点疲劳强度和疲劳寿命的影响 ,确定某塔机结构件断裂事故的发生原因。
The defect or crack developing rate of structure member welding point for tower crane under cycling load is determined with fracture mechanics analysis method The influence of defect on fatigue strength and fatigue life of structure member joint is also analyzed Then the cause of the crack accident of structure member could be determined
出处
《建筑机械》
北大核心
2003年第11期54-56,共3页
Construction Machinery
