摘要
海洋平台管节点的疲劳寿命预测通常采用S-N曲线方法,其中应力幅S的大小需由应力集中系数这个参数来确定。该文通过对大型完全叠接K节点试件在轴向载荷作用下应力集中系数的试验研究,得到了轴向载荷作用下完全叠接K节点焊缝周围的应力集中系数分布和应力集中系数极值点位置,从疲劳的角度证实了完全叠接管节点形式有利于主管的安全。
The most commonly used method to predict the fatigue life of tubular joints in offshore engineering is S-N curve method, in which the hot spot stress (HSS) range along the weld toe is obtained by referring to the parameter named stress concentration factor (SCF). In this study, a large completely overlapped K-joint specimen under axial load has been tested. The SCF distribution along the weld toes and the peak stress locations of the completely overlapped K-joint subjected to axial load were obtained. It is also approved that a completely overlapped joint is an effective joint type in protecting the chord from fatigue fracture.
出处
《工程力学》
EI
CSCD
北大核心
2009年第7期83-88,共6页
Engineering Mechanics
基金
国家自然科学基金项目(10872178)
山东省自然科学基金项目(Y2006F46)
山东省"十一五"科技攻关计划项目(2006GG3208011)
作者简介
曲淑英(1963-),女,烟台人,教授,硕士,主要从事结构动力学的教学与研究(E-mail:qsy_qu@163.com);
张宝峰(1981-),男,山东人,硕士生,从事结构工程方面的研究(E-mail:haim0426@163.com);
张国栋(1982-),男,山东人,硕士生,从事结构工程方面的研究(E—mail:zgd—dog@163.com);
邵永波(1973-),男,山东人,副教授,博士,主要从事结构的强度和疲劳的教学与研究(E—mail:cybshao@ytu.edu.cn).