Abstract
In this study, the fatigue performances of longitudinal-to-transverse rib connections in orthotropic steel decks were assessed by finite element analysis and the hot spot stress approach. Orthotropic steel decks have the following features: (1) stress conditions around welded connections vary depending on the longitudinal and transverse positions of the tire loads, (2) both bending and membrane stresses act on the complex formed connections, and (3) the structures contain comparatively thin steel plates of 6–16 mm thickness. To assess the fatigue performances of the connections in orthotropic steel decks, the effects of traveling load, bending stress, and plate thickness were considered. As a result of the assessments, the connection with a non-slit transverse rib was evaluated to have high fatigue strength in either open or closed longitudinal rib. Finally, the fatigue performances of the connections were confirmed by fatigue tests.
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Acknowledgements
This work was supported by the research project funded by the following members:
IHI Infrastructure Systems Co., Ltd., JFE Engineering Corporation, JFE Steel Corporation,
KAWADA INDUSTRIES, INC., Kobe Steel, Ltd., KOMAIHALTEC Inc., Mitsui Zosen Steel Structures Engineering Co., Ltd., MIYAJI ENGINEERING CO., LTD., MM BRIDGE CO., LTD, NIPPON STEEL & SUMITOMO METAL CORPORATION, and Yokogawa Bridge Holdings Corp.
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Recommended for publication by Commission XIII - Fatigue of Welded Components and Structures
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Yokozeki, K., Miki, C. Fatigue assessment of various types of longitudinal-to-transverse rib connection in orthotropic steel decks. Weld World 61, 539–550 (2017). https://doi.org/10.1007/s40194-017-0426-0
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DOI: https://doi.org/10.1007/s40194-017-0426-0