Fatigue behavior and optimization of double-sided welded joints in orthotropic steel decks
Compared with the single-side welded joint, the novel deck-rib double-sided welded joint is expected to improve the fatigue behavior of orthotropic steel decks (OSDs). Through the combination of numerical simulation and fatigue test, we have made progress in revealing the fatigue performance of doub...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SAGE Publishing
2025-06-01
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| Series: | Advances in Mechanical Engineering |
| Online Access: | https://doi.org/10.1177/16878132251344754 |
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| Summary: | Compared with the single-side welded joint, the novel deck-rib double-sided welded joint is expected to improve the fatigue behavior of orthotropic steel decks (OSDs). Through the combination of numerical simulation and fatigue test, we have made progress in revealing the fatigue performance of double-sided welded joints of deck-ribs in orthotropic steel decks. The influence of structural parameters on the stress of key structural points is further compared. And a multi-layer perceptron (MLP) neural network was established to explore the optimal structural design parameters. Results show that fatigue behavior of crack in the inner and outer weld toes are similar. After introducing welding residual stress, the fatigue behavior of the outer weld toe deteriorated rapidly and was significantly weaker than that of the inner weld toe. In addition, the geometric parameters of the weld have a significant effect on the weld toe stress. The weld lengths of rib and deck of the outer weld are more influential than those of the inner weld, while the excess height of the inner and outer welds has a more pronounced impact on the opposite side. The proposed method provides an optimal strategy for the selection of weld parameters in the actual structure. |
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| ISSN: | 1687-8140 |