摘要
将影响结构抗力的两个决定因素材料强度极限和钢管壁厚表示成时间的函数,分别得出了其受腐蚀后的衰减规律方程,建立了受腐蚀损伤结构构件的抗力随机过程模型,为结构的动态可靠性分析提供了依据。算例表明,对海洋平台结构进行动态可靠性分析是必要的。
The resistance of the steel structure of an offshore platform will decline with time for the corrosion action by sea water,In this paper,the material ultimate strength and the thickness of the tubes are expressed as function of time,then the stochastic process model of structural resistance for corrosion damage structure is established,which provides a foundation for the dynamic reliability analysis of the offshore platform.The numerical example indicates that it is necessary and import to perform a dynamic reliability analysis for the offshore platform under corrosive condition
出处
《中国海洋平台》
2003年第1期23-27,共5页
China offshore Platform
基金
国家自然科学基金重大项目资助课题(59895410)。
关键词
海洋钢质平台
腐蚀损伤
动态可靠度
抗力随机过程
offshore platform,corrosion damage,time-dependant reliability analysis,stochastic process of structural resistance
