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    Fatigue Performance of Rib-to-Deck Joints in Orthotropic Steel Decks with Thickened Edge U-Ribs

    Source: Journal of Bridge Engineering:;2017:;Volume ( 022 ):;issue: 009
    Author:
    Junlin Heng
    ,
    Kaifeng Zheng
    ,
    Chao Gou
    ,
    Yu Zhang
    ,
    Yi Bao
    DOI: 10.1061/(ASCE)BE.1943-5592.0001095
    Publisher: American Society of Civil Engineers
    Abstract: This study evaluated the fatigue performance of rib-to-deck welded joints in orthotropic steel decks (OSDs) with thickened edge U-ribs (TEUs). Fatigue performance of four rib-to-deck specimens with TEUs was investigated and compared with those of three rib-to-deck specimens with conventional U-ribs. Overall, the use of TEUs enhanced the fatigue strength of rib-to-deck joints. Finite-element modeling was conducted and validated by experimental data and sensitivity analyses. The validated finite-element model was then used to investigate the mechanism for the enhancement of fatigue strengths caused by use of TEUs and to evaluate the effects of weld penetration and open angle of rib-to-deck joints. Findings show that use of TEUs significantly improved the robustness of welded joints in terms of sensitivity to variations in the weld penetration. Appropriate increases in the open angle of rib-to-deck joints in OSDs with TEUs further improved fatigue performances. Finally, two full-scale orthotropic steel deck specimens were tested to further validate the effectiveness of TEUs.
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      Fatigue Performance of Rib-to-Deck Joints in Orthotropic Steel Decks with Thickened Edge U-Ribs

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4241760
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    contributor authorJunlin Heng
    contributor authorKaifeng Zheng
    contributor authorChao Gou
    contributor authorYu Zhang
    contributor authorYi Bao
    date accessioned2017-12-16T09:21:31Z
    date available2017-12-16T09:21:31Z
    date issued2017
    identifier other%28ASCE%29BE.1943-5592.0001095.pdf
    identifier urihttp://138.201.223.254:8080/yetl1/handle/yetl/4241760
    description abstractThis study evaluated the fatigue performance of rib-to-deck welded joints in orthotropic steel decks (OSDs) with thickened edge U-ribs (TEUs). Fatigue performance of four rib-to-deck specimens with TEUs was investigated and compared with those of three rib-to-deck specimens with conventional U-ribs. Overall, the use of TEUs enhanced the fatigue strength of rib-to-deck joints. Finite-element modeling was conducted and validated by experimental data and sensitivity analyses. The validated finite-element model was then used to investigate the mechanism for the enhancement of fatigue strengths caused by use of TEUs and to evaluate the effects of weld penetration and open angle of rib-to-deck joints. Findings show that use of TEUs significantly improved the robustness of welded joints in terms of sensitivity to variations in the weld penetration. Appropriate increases in the open angle of rib-to-deck joints in OSDs with TEUs further improved fatigue performances. Finally, two full-scale orthotropic steel deck specimens were tested to further validate the effectiveness of TEUs.
    publisherAmerican Society of Civil Engineers
    titleFatigue Performance of Rib-to-Deck Joints in Orthotropic Steel Decks with Thickened Edge U-Ribs
    typeJournal Paper
    journal volume22
    journal issue9
    journal titleJournal of Bridge Engineering
    identifier doi10.1061/(ASCE)BE.1943-5592.0001095
    treeJournal of Bridge Engineering:;2017:;Volume ( 022 ):;issue: 009
    contenttypeFulltext
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