牛建刚¹，王卫伦²，牛荻涛³
（1 内蒙古科技大学建筑与土木工程学院，包头014010；2深圳市土木工程耐久性重点实验室，深圳518060；3 西安建筑科技大学土木工程学院，西安710055）

[摘要] 考虑环境作用引起的结构耐久性损伤对结构构件抗力的影响，通过对抗力基本参数劣化规律的分析，建立了混凝土结构的抗力衰减模型，并分析了抗力的统计参数；在当前建筑结构荷载与抗力的调查统计分析基础上，提出了结构的动态可靠性分析方法。以钢筋混凝土受弯构件为例，具体分析了构件抗力平均值和结构可靠度随时问的变化规律，为建立考虑结构抗力衰减的可靠度设计方法奠定了基础。
[关键词] 混凝土结构；动态可靠度；抗力衰减；受弯构件

    Reliability analysis of the residential buildings based on resistance deterioration
    Niu Jiangang¹,  Wang Weilun²,  Niu Ditao³
  (1  School ofArchitecture and Civil Engineering Inner Mongolia University of Technology, Baotou 014010, China; 2 Shenzhen Durability Center for Civil Engineering, Shenzhen 518060, China; 3 School of Civil Engineering, Xi'an University ofArchitecture and Technology, Xi'an 710055, China)

Abstract: Considering durability damage of structural elements under environment action, the deterioration ofresistance fundamental parameters were analyzed, and the models of resistance degradation of concrete structure were built. Based on the investigation on the load and resistance of present buildings, the dynamic reliability analysis method of structure was proposed. The reinforced concrete flexural member was taken as an example in the specific analysis by the mean of resistance and structural reliability which varies with time. The results can be a reference for the reliability design method of structure.
Keywords: concrete structure;  dynamic reliability;  resistance deterioration;  flexural member