Fatigue failure modes of rib-to-deck joints under the multiaxial stress states caused by various wheel loading characteristics
Yiyao Zhu
School of Materials Science and Engineering, Tianjin University, Tianjin, China
Search for more papers by this authorCaiyan Deng
School of Materials Science and Engineering, Tianjin University, Tianjin, China
Tianjin Key Laboratory of Advanced Joining Technology, Tianjin, China
Search for more papers by this authorBaoming Gong
School of Materials Science and Engineering, Tianjin University, Tianjin, China
Tianjin Key Laboratory of Advanced Joining Technology, Tianjin, China
Search for more papers by this authorSiyuan Li
School of Materials Science and Engineering, Tianjin University, Tianjin, China
Search for more papers by this authorBaichen Guo
School of Materials Science and Engineering, Tianjin University, Tianjin, China
Search for more papers by this authorCorresponding Author
Dongpo Wang
School of Materials Science and Engineering, Tianjin University, Tianjin, China
Tianjin Key Laboratory of Advanced Joining Technology, Tianjin, China
Correspondence
Dongpo Wang and Hang Liang, School of Materials Science and Engineering, Tianjin University, Tianjin, 300072, China.
Email: [email protected] and [email protected]
Search for more papers by this authorCorresponding Author
Hang Liang
School of Materials Science and Engineering, Tianjin University, Tianjin, China
Tianjin Key Laboratory of Advanced Joining Technology, Tianjin, China
Correspondence
Dongpo Wang and Hang Liang, School of Materials Science and Engineering, Tianjin University, Tianjin, 300072, China.
Email: [email protected] and [email protected]
Search for more papers by this authorYiyao Zhu
School of Materials Science and Engineering, Tianjin University, Tianjin, China
Search for more papers by this authorCaiyan Deng
School of Materials Science and Engineering, Tianjin University, Tianjin, China
Tianjin Key Laboratory of Advanced Joining Technology, Tianjin, China
Search for more papers by this authorBaoming Gong
School of Materials Science and Engineering, Tianjin University, Tianjin, China
Tianjin Key Laboratory of Advanced Joining Technology, Tianjin, China
Search for more papers by this authorSiyuan Li
School of Materials Science and Engineering, Tianjin University, Tianjin, China
Search for more papers by this authorBaichen Guo
School of Materials Science and Engineering, Tianjin University, Tianjin, China
Search for more papers by this authorCorresponding Author
Dongpo Wang
School of Materials Science and Engineering, Tianjin University, Tianjin, China
Tianjin Key Laboratory of Advanced Joining Technology, Tianjin, China
Correspondence
Dongpo Wang and Hang Liang, School of Materials Science and Engineering, Tianjin University, Tianjin, 300072, China.
Email: [email protected] and [email protected]
Search for more papers by this authorCorresponding Author
Hang Liang
School of Materials Science and Engineering, Tianjin University, Tianjin, China
Tianjin Key Laboratory of Advanced Joining Technology, Tianjin, China
Correspondence
Dongpo Wang and Hang Liang, School of Materials Science and Engineering, Tianjin University, Tianjin, 300072, China.
Email: [email protected] and [email protected]
Search for more papers by this authorFunding information: National Natural Science Foundation of China, Grant/Award Number: 51875402
Abstract
Orthotropic steel bridge decks (OSBDs) are characterized by overall structural asymmetries and severe local stress concentrations; meanwhile, complicated service loadings always cause relevant rib-to-3deck (RD) welded joints in multiaxial stress states. Under such circumstances, a full-scale OSBD model was established. Six loading cases were applied, and the multiaxial fatigue deviation was calculated to represent the multiaxial stress state of the bridge deck. Based on the effective traction structural stress method, the most unfavorable loading case for the failure mode of the RD joint under a multiaxial stress state was analyzed, and the failure mode transition in the process of wheel load movement was discussed. The results indicated that the fatigue failure mode of the RD joint was determined by the transverse loading locations. In-between-rib loading can cause the initiation of toe-rib cracks. Cracks are prone to occur under over-rib loading and riding-rib loading, and the arrangement of diaphragms can increase the risk that the fatigue crack originates from the weld root.
CONFLICT OF INTEREST
The authors declare that they have no known competing financial interest or personal relationships that could have appeared to influence the work reported in this paper.
Open Research
DATA AVAILABILITY STATEMENT
The data that support the findings of this study are available from the corresponding author upon reasonable request.
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