Fatigue reliability assessment of rib-to-deck double-sided welded joints in orthotropic steel decks considering welding residual stress
Abstract Fatigue cracking of rib-to-deck conventional single-sided welded joints is a prevalent issue in orthotropic steel decks (OSDs), significantly impacting their structural integrity and durability. Rib-to-deck innovative double-sided welded joints have the potential to enhance the fatigue resi...
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Nature Portfolio
2024-12-01
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| Online Access: | https://doi.org/10.1038/s41598-024-83091-2 |
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| author | Fanghuai Chen Qiang Liu Yida Lu Yuan Luo Xinhui Xiao Yang Liu Bin Chen Haiping Zhang Ying Chen |
| author_facet | Fanghuai Chen Qiang Liu Yida Lu Yuan Luo Xinhui Xiao Yang Liu Bin Chen Haiping Zhang Ying Chen |
| author_sort | Fanghuai Chen |
| collection | DOAJ |
| description | Abstract Fatigue cracking of rib-to-deck conventional single-sided welded joints is a prevalent issue in orthotropic steel decks (OSDs), significantly impacting their structural integrity and durability. Rib-to-deck innovative double-sided welded joints have the potential to enhance the fatigue resistance of OSD. However, Welding Residual Stresses (WRS) significantly influence the fatigue life of these joints, mandating its consideration in fatigue assessments. This study introduces a novel approach for assessing the fatigue reliability of rib-to-deck double-sided welded joints in OSDs, accounting for the effects of traffic vehicle loading and WRS. Initially, a comprehensive fatigue damage equation for welded joints of OSDs was formulated, integrating WRS and dynamic vehicle loads, utilizing fracture mechanics theory. Subsequently, a measurement-based random traffic model was utilized to derive the vehicle-induced stress spectra at the welded joints. The effects of deck thickness, fatigue crack depth and fatigue crack aspect ratio on the stress intensity factor (SIF) of the crack at the weld toe were analyzed. These three variables were considered as feature vectors for the construction of a polynomial model of the shape functions, which was utilized to calculate the SIF. Finally, the fatigue reliability of the rib-to-deck double-sided welded joints in OSDs subject to traffic vehicle loading considering the WRS was estimated using Monte Carlo simulation. The influence of traffic volume growth on fatigue reliability was discussed. This research underscores the critical role of WRS in the fatigue performance of welded joints in OSDs and offers an innovative framework for assessing the fatigue reliability of steel bridge welds. |
| format | Article |
| id | doaj-art-6da8a4bbfb7347a8970a54ce483bbed5 |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-6da8a4bbfb7347a8970a54ce483bbed52024-12-29T12:29:38ZengNature PortfolioScientific Reports2045-23222024-12-0114111710.1038/s41598-024-83091-2Fatigue reliability assessment of rib-to-deck double-sided welded joints in orthotropic steel decks considering welding residual stressFanghuai Chen0Qiang Liu1Yida Lu2Yuan Luo3Xinhui Xiao4Yang Liu5Bin Chen6Haiping Zhang7Ying Chen8School of Civil Engineering, Hunan University of TechnologySchool of Civil Engineering, Hunan University of TechnologySchool of Civil Engineering, Hunan University of TechnologySchool of Civil Engineering, Hunan University of TechnologySchool of Civil Engineering, Hunan University of TechnologySchool of Civil Engineering, Changsha University of Science & TechnologySchool of Civil Engineering, Hunan University of TechnologySchool of Civil Engineering, Hunan University of TechnologyHunan Urban Construction CollegeAbstract Fatigue cracking of rib-to-deck conventional single-sided welded joints is a prevalent issue in orthotropic steel decks (OSDs), significantly impacting their structural integrity and durability. Rib-to-deck innovative double-sided welded joints have the potential to enhance the fatigue resistance of OSD. However, Welding Residual Stresses (WRS) significantly influence the fatigue life of these joints, mandating its consideration in fatigue assessments. This study introduces a novel approach for assessing the fatigue reliability of rib-to-deck double-sided welded joints in OSDs, accounting for the effects of traffic vehicle loading and WRS. Initially, a comprehensive fatigue damage equation for welded joints of OSDs was formulated, integrating WRS and dynamic vehicle loads, utilizing fracture mechanics theory. Subsequently, a measurement-based random traffic model was utilized to derive the vehicle-induced stress spectra at the welded joints. The effects of deck thickness, fatigue crack depth and fatigue crack aspect ratio on the stress intensity factor (SIF) of the crack at the weld toe were analyzed. These three variables were considered as feature vectors for the construction of a polynomial model of the shape functions, which was utilized to calculate the SIF. Finally, the fatigue reliability of the rib-to-deck double-sided welded joints in OSDs subject to traffic vehicle loading considering the WRS was estimated using Monte Carlo simulation. The influence of traffic volume growth on fatigue reliability was discussed. This research underscores the critical role of WRS in the fatigue performance of welded joints in OSDs and offers an innovative framework for assessing the fatigue reliability of steel bridge welds.https://doi.org/10.1038/s41598-024-83091-2Orthotropic steel deckDouble-sided welded jointsFatigue reliabilityResidual stressVehicle load |
| spellingShingle | Fanghuai Chen Qiang Liu Yida Lu Yuan Luo Xinhui Xiao Yang Liu Bin Chen Haiping Zhang Ying Chen Fatigue reliability assessment of rib-to-deck double-sided welded joints in orthotropic steel decks considering welding residual stress Scientific Reports Orthotropic steel deck Double-sided welded joints Fatigue reliability Residual stress Vehicle load |
| title | Fatigue reliability assessment of rib-to-deck double-sided welded joints in orthotropic steel decks considering welding residual stress |
| title_full | Fatigue reliability assessment of rib-to-deck double-sided welded joints in orthotropic steel decks considering welding residual stress |
| title_fullStr | Fatigue reliability assessment of rib-to-deck double-sided welded joints in orthotropic steel decks considering welding residual stress |
| title_full_unstemmed | Fatigue reliability assessment of rib-to-deck double-sided welded joints in orthotropic steel decks considering welding residual stress |
| title_short | Fatigue reliability assessment of rib-to-deck double-sided welded joints in orthotropic steel decks considering welding residual stress |
| title_sort | fatigue reliability assessment of rib to deck double sided welded joints in orthotropic steel decks considering welding residual stress |
| topic | Orthotropic steel deck Double-sided welded joints Fatigue reliability Residual stress Vehicle load |
| url | https://doi.org/10.1038/s41598-024-83091-2 |
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