NARROW RELIABILITY BOUNDS FOR STRUCTURAL SYSTEMS

被引:656
作者
DITLEVSEN, O
机构
[1] Civil Engineering Department, Lyngby
来源
JOURNAL OF STRUCTURAL MECHANICS | 1979年 / 7卷 / 04期
关键词
D O I
10.1080/03601217908905329
中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
For structural systems that may fail in any one of several possible modes, reliability analysis is greatly simplified by use of upper and lower bound techniaues. General bounds based on all the single mode failure probabilities and all the pairwise mode intersection failure probabilities are established. For systems where the single mode limit state surfaces are hyperplanes in the space of basic variables, a simple geometrical interpretation of the correlation between mode safety margins combined with a well-known geometrical interpretation of the single mode reliability index makes the practical calculation of the system reliability bounds easy. This is particularly true when the set of basic variables is jointly normally distributed. Examples show very narrow bounds which, in the practically important domain of high reliability, are almost coincident. © 1979, Taylor & Francis Group, LLC. All rights reserved.
引用
收藏
页码:453 / 472
页数:20
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