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Fatigue Assessment of the Diaphragm-to-Rib Welded Connection in Orthotropic Steel Deck Using Effective Notch Stress Approach

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Abstract

The effective notch stress approach to fatigue assessment of existing large-size specimens for diaphragm-to-rib welded connection in orthotropic steel deck is investigated. Two kinds of specimens are designed. Specimen 1 has the form of circular arc transition; specimen 2 has the form of vertical transition. The first principal stress distribution at weld toe and weld root is calculated by the sub-model method of ANSYS software. By means of the maximum first principal stress analysis, it is possible to distinguish whether fatigue cracks will initiate at the weld toe or the weld root, which is agreed with the fatigue test results. Furthermore, the fatigue strength of specimen 1 and specimen 2 are evaluated by the effective notch stress approach according to fatigue tests. Finally, the factors affecting the stress intensity at the weld toe are studied.

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Acknowledgments

This work is supported by the Fundamental Research Funds for the Central Universities (2013G1251032).

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Authors and Affiliations

  1. Chang’an University, Xi’an, 710064, Shaanxi Province, People’s Republic of China

    Binhua Wang

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  1. Binhua Wang
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Correspondence to Binhua Wang.

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Wang, B. Fatigue Assessment of the Diaphragm-to-Rib Welded Connection in Orthotropic Steel Deck Using Effective Notch Stress Approach. J Fail. Anal. and Preven. 15, 65–73 (2015). https://doi.org/10.1007/s11668-014-9909-0

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  • DOI: https://doi.org/10.1007/s11668-014-9909-0

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