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作者:

Zhou, Hui (Zhou, Hui.) | Shi, Gang (Shi, Gang.) | Wang, Yuanqing (Wang, Yuanqing.) | Chen, Huating (Chen, Huating.) | De Roeck, Guido (De Roeck, Guido.)

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Scopus SCIE

摘要:

An enhanced fatigue assessment of critical welded details in a steel-concrete composite railway bridge was carried out by fatigue crack propagation analysis based on linear elastic fracture mechanics (LEFM). The most fatigue critical connections concerned in this study were identified by the preliminary fatigue assessment based on the S-N method in the previous research of the authors Zhou et al. (2013). Three-dimensional crack models of the critical connections were incorporated into the global-local finite element model of the bridge. The stress intensity factor (SIF) histories of the cracks were calculated through dynamic analysis of the bridge due to the high-speed train passages, which validated the applicability and the accuracy of the empirical SIF formulas for the concerned bridge details. The fatigue crack growth curve, represented by crack size versus number of train passages, was obtained through crack propagation analysis based on the Paris law and LEFM, and fatigue propagation life was predicted for each critical connection. The proposed crack propagation analysis method provides a general and alternative approach to evaluate the fatigue life of welded details in steel bridges. (C) 2016 Elsevier Ltd. All rights reserved.

关键词:

Linear elastic fracture mechanics (LEFM) Composite railway bridge Global-local model Fatigue evaluation Crack propagation analysis

作者机构:

  • [ 1 ] [Zhou, Hui]Beijing Univ Technol, Minist Educ, Key Lab Urban Secur & Disaster Engn, Beijing 100124, Peoples R China
  • [ 2 ] [Chen, Huating]Beijing Univ Technol, Minist Educ, Key Lab Urban Secur & Disaster Engn, Beijing 100124, Peoples R China
  • [ 3 ] [Shi, Gang]Tsinghua Univ, Dept Civil Engn, China Educ Minist, Key Lab Civil Engn Safety & Durabil, Beijing 100084, Peoples R China
  • [ 4 ] [Wang, Yuanqing]Tsinghua Univ, Dept Civil Engn, China Educ Minist, Key Lab Civil Engn Safety & Durabil, Beijing 100084, Peoples R China
  • [ 5 ] [De Roeck, Guido]Katholieke Univ Leuven, Dept Civil Engn, Kasteelpark Arenberg 40, B-3001 Leuven, Belgium

通讯作者信息:

  • [Shi, Gang]Tsinghua Univ, Dept Civil Engn, China Educ Minist, Key Lab Civil Engn Safety & Durabil, Beijing 100084, Peoples R China

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来源 :

JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH

ISSN: 0143-974X

年份: 2016

卷: 122

页码: 1-13

4 . 1 0 0

JCR@2022

ESI学科: ENGINEERING;

ESI高被引阀值:166

中科院分区:3

被引次数:

WoS核心集被引频次: 17

SCOPUS被引频次: 18

ESI高被引论文在榜: 0 展开所有

万方被引频次:

中文被引频次:

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