摘要
针对我国现行建筑结构设计规范中静态可靠度分析模型的缺陷,考虑了服役结构荷载及抗力分布统计特征不同于拟建结构的固有特点,建立了全随机时变可靠性评估模型.为弥补以往仅仅局限于单因素作用下可靠性分析的不足,建立了混凝土损伤和钢筋损伤等多因素影响机制下的全随机动态可靠度分析模型,并求得动态可靠指标.给出了一般大气环境下钢筋混凝土结构在服役期内截面尺寸、抗力水平以及可靠指标的时变规律.算例验证了该方法的正确性.
Considering the defect of the static model of the reliability analysis in the current structural design and characteristics of the load and resistance of the existing structure different from proposed structure,the reliability analysis model of the full random dynamic under the multi-factor influence mechanism of concrete damage and reinforcing bar damage was provided,which is a great progress compared to the model of one-factor.Dynamic reliability index is calculated.Time-dependent rules of sectional dimension,resistance and reliability index of RC structure in the general air environment during service term were given,which illustrate the correctness of the method.
出处
《沈阳建筑工程学院学报（自然科学版）》
2004年第1期10-13,共4页
Journal of Shenyang Architectural and Civil Engineering University(Nature Science)
基金
国家自然科学基金资助项目(40072006)
关键词
一般大气
已有结构
时变
受压构件
动态可靠度
general air
existing structure
time-dependent
compression member
dynamic reliability
