摘要
采用β约界法计算钢框架结构系统可靠度时,通常在分析系统失效模式时并没有考虑随机变量相关性的影响。通过分析其框架结构实例,研究随机变量相关性对系统失效模式的影响,进而得出影响规律。分析表明:随机变量相关性的改变将改变系统中单元的可靠度,从而影响结构系统的失效路径。
The correlation between random variables are not usually considered in the analysis of structural system failure mode when β-unzipping method was adopted to calculate the reliability of steel frame structure system . This paper studies the influence of the correlation between random variables on the system failure modes by analyzing an instance of a frame construction, and the influence rules was achieved. The following conclusions can be drawn： the reliability of the elements in the system can be changed through the change of the correlation between random variables, which affects the main system failure modes.
出处
《钢结构》
2014年第9期1-4,共4页
Steel Construction
基金
国家自然科学基金项目(51108075)
江苏省自然科学基金项目(BK2011613)
江苏省科技支撑计划项目(BE2012125)
江苏高校优势学科建设工程资助项目
住房和城乡建设部2010年科学技术项目计划(2010-K2-7)
关键词
钢框架结构
系统可靠度
随机变量相关性
修正β约界法
失效模式
steel frame
system reliability
correlation between random variables
modified β-unzipping method
failure modes
