Abstract
Orthotropic steel decks have serious fatigue problems especially on the connections between longitudinal and transverse ribs. In this paper, experimental and analytical works were conducted to evaluate the fatigue performance of connections between longitudinal U-ribs and transverse ribs with and without the slit on the transverse rib web. Finite element analyses of the specimen for all possible loading cases clarified the influence surfaces for structural hot spot stress (SHSS) working on weld toes of the connections. Fatigue tests with the loading case that generates the maximum and minimum SHSS on the connections were conducted. Fatigue test results for the slit connections evaluated by SHSS show agreement with previous fatigue data of similar connection details. No fatigue crack was initiated on the connection without the slit after 4.6 million cycles compared to fatigue failure of the slit connection at 0.7 million cycles.
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Acknowledgments
This work was supported by the research project collaborated by 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, 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 evaluation for longitudinal-to-transverse rib connection of orthotropic steel deck by using structural hot spot stress. Weld World 60, 83–92 (2016). https://doi.org/10.1007/s40194-015-0272-x
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DOI: https://doi.org/10.1007/s40194-015-0272-x