考虑预应力随机性的点支幕墙索桁架可靠性分析  

Reliability Analysis of the Cable Truss of Point-Supported Curtain Considering Uncertainty in Prestress

作　　者：汤伟方[1] 吕令毅[1] 

机构地区：[1]东南大学土木工程学院,南京210096

出　　处：《建筑钢结构进展》2006年第4期38-40,共3页Progress in Steel Building Structures

基　　金：国家自然科学基金项目(50478074)

摘　　要：运用蒙特卡洛有限元法,考虑预应力的随机性,分析并计算了点支幕墙预应力索桁架支承体系的挠度最大值的统计特征值,得到其失效概率。进而对索桁架的预应力控制进行探讨。A Monte Carlo-finite element method is presented for statistical characteristic values of the maximal deflection analysis of the prestressed cable truss of point-supported curtain. Uncertainty in prestress is considered in the analysis. A prestressed cable truss was taken as an example for calculating the failure probability. Then the prestress assigned to the cable truss is discussed.

关 键 词：索桁架 预应力损失 蒙特卡洛有限元 失效概率 

分 类 号：TU311.2[建筑科学—结构工程]