Target reliability of civil engineering structures

21st International Scientific Conference on Advanced in Civil Engineering "Construction - The Formation of Living Environment"

土木建筑工程

Holický, M.^1

Klokner Institute, Czech Technical University in Prague, Šolínova 7, Praha 6

166 08, Czech Republic^1

关键词: Civil engineering structures;    Optimum reliability;    Practicing engineers;    Probabilistic optimization;    Structural failure;    Structural parameter;    Structural reliability;    Target reliability;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/365/5/052002/pdf
DOI  :  10.1088/1757-899X/365/5/052002

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

The structural reliability recommended in Eurocodes and other international documents vary within a broad range, while the reference to the failure consequences and design working life is mentioned only very vaguely. In some cases the target reliability indexes are indicated for one or two reference periods (in Eurocodes for 1 year and 50 years), however no explicit link to the design working life is usually provided. This article attempts to clarify the relationship between the target reliability levels, failure consequences, the design working life and the discount rate. The theoretical study based on probabilistic optimization is supplemented by recommendations useful for code makers and required by practicing engineers. It appears that the optimum reliability indices depend primarily on the ratio of the cost of structural failure to the cost per unit of structural parameter, and less significantly on the design working life and on the discount rate.