文献类型：期刊文献

英文题名：Joints Fatigue Damage Prediction for a Steel Truss Suspension Bridge Considering Corrosion Environment

作者：Wu, Weiwei He, Xiongjun He, Li Wu, Chao He, Jia Zhu, Andong

第一作者：Wu, Weiwei

通信作者：He, L[1]

机构：[1]Wuhan Univ Technol, Sch Transportat, Wuhan 430063, Peoples R China;[2]Hubei Prov Highway Engn Res Ctr, Wuhan 430063, Peoples R China;[3]Guizhou Inst Technol, Sch Civil Engn, Guiyang 561000, Peoples R China;[4]Eindhoven Univ Technol, Dept Built Environm, POB 513, NL-5600 MB Eindhoven, Netherlands

第一机构：Wuhan Univ Technol, Sch Transportat, Wuhan 430063, Peoples R China

通信机构：corresponding author), Guizhou Inst Technol, Sch Civil Engn, Guiyang 561000, Peoples R China.|贵州理工学院土木工程学院;贵州理工学院;

年份：2022

卷号：47

期号：4

起止页码：4879-4892

外文期刊名：ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING

收录：;Scopus(收录号：2-s2.0-85118345630);WOS:【SCI-EXPANDED(收录号:WOS:000713555600001)】；

基金：The research described in this paper was financially supported by Science and Technology Project of the Department of Transportation of Hubei Province (No. 2018-422-1-2) and the National Natural Science Foundation of China (No. 51178361).

语种：英文

外文关键词：Steel truss bridge; Corrosion model; Fatigue test; Stiffness degradation; Damage prediction

摘要：The corrosion environment of a steel truss bridge significantly shortens its service life, particularly the chemical pollution in the air. A linear corrosion prediction model is proposed based on Miner's linear cumulative damage concept to solve the difficulty of implementing accelerated corrosion tests. Moreover, an equivalent fatigue test is designed in combination with the corrosion prediction model. The results indicate that the bridge's fatigue resistance can meet the design requirements when the corrosion environment is not considered. When the corrosion effects are jointly considered, the fatigue durability of the bridge is insufficient. With the increase in fatigue cycles, stiffness degradation presents a three-stage trend. The intermediate stage is a gentle development stage from the fatigue test results, accounting for approximately 80% of the total life cycles. Finally, a fatigue damage prediction model considering corrosion factors is established, and the law of fatigue damage and stiffness degradation of the structure under a corrosive environment is determined.