摘要
本文首先研究了疲劳载荷作用下构件抗力随损伤发展而衰减的规律，建立了抗力衰减的模型；然后应用概率疲劳累积损伤理论和随机损伤发展模型．在考虑载荷的随机性和损伤发展本身固有的随机性的基础上，得到了构件抗力衰减过程的统计矩．为分析结构在使用期间的服役可靠性提供了初步可用的结果。
In this paper, the reducing discipline of resistance in the structural members relating to the damage accumulation under the fatiguc cyclic load was studied.The reductive model of resistance was also established. Then, on the basis of the theory of the probabilistic filtiguc damage accumulation and a stochastical modcl of damage development, tile formulas for statistical moments of resistance of structural members were derived by taking the randomness of dynamic load and the intrinsic randomness of damage developing process into considcration. Thcrcforc, this paper will provide preliminary basis for the scrvice reliahility analysis of structures.
出处
《哈尔滨建筑大学学报》
1996年第1期1-8,共8页
Journal of Harbin University of Civil Engineering and Architecture
基金
国家自然科学基金
关键词
疲劳载荷
结构构件
损伤积累
抗力
resistance
stochastic processes
damage accumulation
member
