Explicit Model of Outcrossing Rate for Time-Variant Reliability

被引：3

作者：

Li, Xiang-Wei ^{[1
]}

Zhao, Yan-Gang ^{[1
,2
]}

Zhang, Xuan-Yi ^{[1
]}

Lu, Zhao-Hui ^{[1
,3
]}

机构：

[1] Beijing Univ Technol, Minist Educ, Key Lab Urban Secur & Disaster Engn, Beijing 100124, Peoples R China

[2] Kanagawa Univ, Dept Architecture, Yokohama, Kanagawa 2218686, Japan

[3] Cent South Univ, Sch Civil Engn, Changsha 410075, Peoples R China

来源：

ASCE-ASME JOURNAL OF RISK AND UNCERTAINTY IN ENGINEERING SYSTEMS PART A-CIVIL ENGINEERING | 2022年 / 8卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Outcrossing rate; Explicit model; Time-variant reliability; Two-dimensional numerical integration; Computational efficiency; DEPENDENT RELIABILITY; PHI2;

D O I：

10.1061/AJRUA6.0001204

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The usual approach to time-variant reliability problems is PHI2 method, which defines the outcrossing rate as a two-component parallel system problem and calculates it through a two-dimensional numerical integration. To improve the computational efficiency, an explicit model of outcrossing rate is proposed in this study, which is referred to as EPHI2. Based on the proposed explicit model, EPHI2 method avoids the numerical integration required in PHI2 method. Comparison between the outcrossing rates obtained by PHI2 and EPHI2 methods was conducted, and EPHI2 method was proved to have enough accuracy for calculating outcrossing rates. The application of EPHI2 method for time-variant reliability analysis was investigated through three numerical examples. It is found that the proposed EPHI2 method is more efficient than PHI2 method in time-variant reliability analysis, with the results nearly the same. (C) 2021 American Society of Civil Engineers.

引用

页数：11

共 25 条

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