Journal
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
Volume 148, Issue -, Pages 469-478Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jcsr.2018.06.016
Keywords
Analytical approach; Fatigue damage; Internal force transfer; PBL shear connector group; Step-by-step calculation
Funding
- National Natural Science Foundation of China [51578455, 51778533, 51378431, 51408506, 50908192, 51178394]
- Science and Technology Program of Hubei Transportation Department [2017-538-2-4]
- Fundamental Research Funds for the Central Universities [2682014CX078]
- National Science and Technology Support Program of China [2011BAG07B03]
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This study presents an analytical method to analyze fatigue damage in Perfobond rib (PBL) shear connector group under cyclic loading. A step-by-step calculation procedure is proposed and implemented to quantify the fatigue damage in PBL shear connector groups, considering the uneven shear force distribution at different layers of shear connectors. The fatigue life of the PBL shear connector group is evaluated, and the effect of uneven shear force distribution on fatigue life is studied. The investigation results indicate the coupling effect between fatigue damage and internal force distribution, and reveal that the fatigue damage indices are different at different layers of a PBL shear connector group. The uneven force distribution reduces the fatigue life of PBL shear connector group, and the unevenness decreases with the development of fatigue damage. The degree of fatigue damage in each layer of the PBL shear connectors is sensitive to the upper load level. The proposed approach offers an analytical tool for evaluating the fatigue behavior of PBL shear connector groups. (C) 2018 Elsevier Ltd. All rights reserved.
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