【作者】 贾如钊； 王春江； 蔡文涛；

【Author】 Jia Ruzhao;Wang Chunjiang;Cai Wentao;School of Naval,Architecture,Ocean & Civil Engineering,Shanghai Jiao Tong University;

【机构】 上海交通大学船舶海洋与建筑工程学院；

【摘要】 半平行钢拉索在桥梁工程和各类空间结构中有着十分广泛的应用,但其在风、雨、腐蚀环境等的作用下出现的疲劳问题对结构的使用寿命影响巨大,微动疲劳作为索体疲劳问题中的主要原因之一广受关注。本文针对半平行钢拉索在静力和动力荷载作用下的动力响应引起的丝间微动现象,利用参数化方法建立了精细化的钢索有限元模型,研究了拉索在微动行为影响下的应力分布、应力集中及接触摩擦等问题,为进一步研究拉索的微动疲劳打下基础。更多还原

【Abstract】 Semi-parallel steel cable has a wide range of applications in bridge engineering and other spatial structures,but its fatigue problems under the action of wind,rain and corrosive environment have a great impact on the service life of the structure.As one of the main reasons for the fatigue problem,Fretting fatigue has received much attention.In this paper,A finite element model of refined steel cable is established by using parametric method.The problem of stress distribution,stress concentration and contact friction of the cable under the influence of fretting behavior is studied for the fretting phenomenon caused by the dynamic response of the semi-parallel steel cable under static and dynamic loads,to lay the foundation for further study of the fretting fatigue of the cable.更多还原