Experimental Study on Fatigue Resistance of Rib-to-Deck Joint in Orthotropic Steel Bridge Deck

Li, Ming; Suzuki, Yasuo; Hashimoto, Kenro; Sugiura, Kunitomo

doi:10.1061/(asce)be.1943-5592.0001175

Cited by 54 publications

(22 citation statements)

References 7 publications

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“…To validate the proposed equations, the weld root NSIFs and T‐stress, the fatigue failure mode, and the fatigue strength of the SW and SU models are evaluated. Table summarizes the fatigue test results and the corresponding weld geometrical configurations of the models to be analyzed . The scope of this study is limited to weld root failure (ie, root‐to‐deck or root‐to‐throat failure modes).…”

Section: Validation Of the Proposed Equationmentioning

confidence: 99%

“…For the two SU groups (SU‐1 and SU‐2), the stress ratio was R = −1; the stress ranges were the nominal bending stresses at the rib toe cross section (F‐F section in Figure C). Figure illustrates the global dimensions and the schematic of test set‐up of the SU specimens tested by Yuan and Li et al In both groups, the deck plates of the SU specimens were supported by the roller fixtures. The load was applied to either the bottom web of rib (Figure A) or the deck plate (Figure B).…”

Section: Validation Of the Proposed Equationmentioning

confidence: 99%

“…Extensive experimental studies have been carried out to understand the fatigue behaviours of rib‐to‐deck welded joint . Figure shows the two test models commonly used in fatigue testing.…”

Section: Introductionmentioning

confidence: 99%

“…Under such loading condition, the deck plate was subjected to cyclic bending stress while the rib web was free of any external load. The single U‐rib (SU) model consisted of a deck plate and a complete U‐rib . The deck plates of the SU model were placed on roller fixtures to simulate the simple support (Figure B).…”

Section: Introductionmentioning

confidence: 99%

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Rib loading effects on weld root fatigue failure modes at rib‐to‐deck welded joint

Luo

Zhang

Bao

2020

Fatigue Fract Eng Mat Struct

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The service life of orthotropic steel decks is dependent on the fatigue resistance of rib-to-deck welded joints, which is often tested using two kinds of experimental models in terms of the rib loading condition. Different weld root fatigue failure modes have been observed in the different models, but the role of rib loading remains unclear. This paper aims to clarify the effect of rib loadings on the weld root fatigue failure modes at rib-to-deck welded joints. The loadings are decomposed into the deck loadings and rib loadings according to the principle of superposition. Formulae of the weld root notch stress intensity factors and T-stress under rib loadings are developed by multiparameter regression analysis and subsequently used for the local stress analysis. The fatigue failure modes determined from the local stress field agree well with the experimental results. The results reveal that the weld root failure modes depend on the rib loadings but are independent of the weld geometries. The averaged strain energy density (SED) that can capture both weld geometry and loading condition effects is used to correlate the fatigue test data of different weld root failure modes. The SED is capable of evaluating the fatigue strength of the rib-to-deck welded joint failed by different weld root failure modes with a narrow scatter band. K E Y W O R D Sfatigue failure mode, fatigue test model, local stress field, notch stress intensity factor, weld geometry

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Section: Validation Of the Proposed Equationmentioning

confidence: 99%

Section: Validation Of the Proposed Equationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Rib loading effects on weld root fatigue failure modes at rib‐to‐deck welded joint

Luo

Zhang

Bao

2020

Fatigue Fract Eng Mat Struct

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“…Plenty of experimental and theoretical studies were conducted on the fatigue cracking process, fatigue characteristics as well as failure mechanics of OSD, and the relevant construction technology. Weld penetration rate, structural configuration, measure of maintenance, and reinforcement are proposed to improve the fatigue performance of OSD [3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

In Situ Experimental Study on the Behavior of UHPC Composite Orthotropic Steel Bridge Deck

Wang

Gao

et al. 2020

Materials

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A novel ultra high performance concrete (UHPC) layer composite orthotropic steel deck was adopted in the construction of a new bridge in China to improve the fatigue performance of the orthotropic steel deck plate and reduce the disease of surface wearing layer. In situ experiments were conducted to study the UHPC layer’s impact on the behavior of the orthotropic steel deck. The test vehicle loads were applied on the deck plate before and after UHPC layer paving, the stresses where fatigue cracks usually occur and the deflections of critical sections were measured. The test results verified that the UHPC composite steel deck system could significantly reduce the stress of the rib-to-deck connection region and the stress at the bottom toe of rib-to-diaphragm weld. In addition, it slightly influenced the performance of U shape rib, girder web-to-deck and diaphragm cutout.

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Parametric equations for notch stress concentration factors of rib—deck welds under bending loading

Wang

et al. 2021

Front. Struct. Civ. Eng.

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Experimental Study on Fatigue Resistance of Rib-to-Deck Joint in Orthotropic Steel Bridge Deck

Cited by 54 publications

References 7 publications

Rib loading effects on weld root fatigue failure modes at rib‐to‐deck welded joint

Rib loading effects on weld root fatigue failure modes at rib‐to‐deck welded joint

In Situ Experimental Study on the Behavior of UHPC Composite Orthotropic Steel Bridge Deck

Parametric equations for notch stress concentration factors of rib—deck welds under bending loading

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