基于MATLAB的平面框架结构位移可靠度分析研究  

The analysis of plane frame structure displacement reliability based on the MATLAB

作　　者：李远瑛[1] 张德生[1] 

机构地区：[1]嘉应学院土木工程学院,广东梅州514015

出　　处：《四川建筑科学研究》2012年第2期82-85,共4页Sichuan Building Science

基　　金：华南理工大学亚热带建筑科学国家重点实验室资助项目(2008ZC21);国家科技支撑计划子课题(2006BAJ01B07);2011年梅州市科技计划项目

摘　　要：基于结构可靠度分析数值模拟方法———蒙特卡罗法和响应面法的基本原理,利用MATLAB软件对一榀2跨3层框架在水平荷载作用下进行位移可靠度分析,分别采用了直接抽样蒙特卡罗法、响应面法、响应面—蒙特卡罗法、响应面—重要抽样蒙特卡罗法编制相应的计算程序,得到了结构水平位移最不利点的失效概率和可靠指标。计算结果表明,利用MATLAB可以编制结构可靠度分析程序,计算速度较快,数据合理,并为复杂结构的可靠性分析提供参考。The structure reliability analysis method,the basic principle of the Monte-Carlo method and the response surface method were introduced.By using software of MATLAB,the displacement reliability analysis of the plane frame with two spans,three stories under horizontal loads was constructed.The corresponding calculator programs were worked out by using direct sampling Monte-Carlo method,the response surface method,the response surface-the Monte-Carlo method,the response surface-important sampling Monte-Carlo method.The most unfavorable horizontal displacement of the structure of failure probability and reliable indicators was obtained.The calculation results show that,structure reliability analysis program is feasible by using MATLAB.The calculation speed faster,data is reasonable,and the method provides the reference for complex structure reliability analysis.

关 键 词：MATLAB 平面框架结构 位移 可靠度 

分 类 号：TU323.5[建筑科学—结构工程]