Development of a fatigue experiment for the stiffener-to-deck plate connection in Orthotropic Steel Decks

Nagy, Wim; Wang, Benjin; Culek, Bohumil; Bogaert, Philippe Van; Backer, Hans De

doi:10.1007/s13296-017-1207-8

Cited by 25 publications

(9 citation statements)

References 12 publications

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“…four types: Type 1 initiated from the weld toe and propagated through the deck (or toe-deck), Type 2 (root-deck), Type 3 (root-weld), and Type 4 (toe-rib), as shown in Figure 1. Correspondingly, test data by Nagy et al 4 from a small-scale fatigue test showed the predominance of toe-deck cracks. Meanwhile, Kainuma et al 5 and Li et al 6 found that root cracks are easier to initiate and propagate.…”

Section: Introductionmentioning

confidence: 82%

Fatigue failure modes of rib‐to‐deck joints under the multiaxial stress states caused by various wheel loading characteristics

Zhu

Deng

Gong

et al. 2022

Fatigue Fract Eng Mat Struct

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Orthotropic steel bridge decks (OSBDs) are characterized by overall structural asymmetries and severe local stress concentrations; meanwhile, complicated service loadings always cause relevant rib‐to‐3deck (RD) welded joints in multiaxial stress states. Under such circumstances, a full‐scale OSBD model was established. Six loading cases were applied, and the multiaxial fatigue deviation was calculated to represent the multiaxial stress state of the bridge deck. Based on the effective traction structural stress method, the most unfavorable loading case for the failure mode of the RD joint under a multiaxial stress state was analyzed, and the failure mode transition in the process of wheel load movement was discussed. The results indicated that the fatigue failure mode of the RD joint was determined by the transverse loading locations. In‐between‐rib loading can cause the initiation of toe‐rib cracks. Cracks are prone to occur under over‐rib loading and riding‐rib loading, and the arrangement of diaphragms can increase the risk that the fatigue crack originates from the weld root.

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Section: Introductionmentioning

confidence: 82%

Fatigue failure modes of rib‐to‐deck joints under the multiaxial stress states caused by various wheel loading characteristics

Zhu

Deng

Gong

et al. 2022

Fatigue Fract Eng Mat Struct

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“…There are constraints and load types of this kind of test model: (1) the transverse ends of the roof are constrained by hinge or consolidation, the longitudinal rib is in a completely free state, and the fatigue load is applied on the top surface of the roof, see Figure 5 Under the loading mode SM-1, the cracking modes of crack-I and crack -III mainly occur in the welding details between the longitudinal rib and the top plate. With the improvement of penetration rate, the dominant cracking mode of the structural details moves from crack -III to crack-I [4,[20][21][22][23][24][25][26][27][28][29]. Yuan [18] carried out 185 fatigue tests by loading SM-2.…”

Section: Sub-sized Specimen Modelmentioning

confidence: 99%

Fatigue Performance of Rib-to-Deck Joints Strengthened With Internal Welding

2022

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"Rib-to-deck joints of orthotropic steel decks (OSDs) in steel bridges are susceptible to longitudinal fatigue cracking, which often results in considerable costs as well as traffic interruption. This paper numerically simulated the Crack II of rib-to-deck joint and analyzed the crack failure mode of the joint. To mitigate such cracking, a strengthening method using internal welding was investigated. The effects of initial crack size, internal weld size and crack depth on the stress intensity factor (SIF) of crack tip on rib-to-deck fatigue details were studied by finite element method. The finite element analysis demonstrated that the proposed method can significantly improve the detailed stress range of the weld root, lead to the transfer of crack development mode, and prolong the fatigue life of rib-to-deck joints. Numerical analysis validated the beneficial effect of strengthening measures on the stress intensity factors at crack tips. Calculation of stress intensity factors at crack tips resulted that the crack development law, and the application range of reinforcement method was analyzed. This study provided a reference to the design and application of internal welding in the strengthening of weld details in OSDs."

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“…Many scholars gradually adopted the fracture mechanics method to study the fatigue crack propagation of welded details with initial defect (Nagy, Wang, Culek, Van Bogaert, & De Backer, 2017). As an essential parameter in fracture mechanics, the stress intensity factor not only determines the crack growth of the welded details but also has a direct effect on the prediction accuracy of the fatigue life (Albuquerque, Silva, de Jesus, & Calçada, 2015;Duchaczek & Mańko, 2015).…”

Section: Introductionmentioning

confidence: 99%

Fatigue Life Assessment and Reliability Analysis of Cope-Hole Details in Steel Bridges

Liao

Wang

Zhang

et al. 2020

BJRBE

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Cope-hole details are widely applied to steel bridges. However, the safety of steel bridges is influenced by the fatigue performance of welded details. So, cope-hole details with flange and web subjected to axial loads were selected as the research object. Based on the basic theory of linear elastic fracture mechanics and the Finite Element Method, the stress intensity factors of cope-holes details were calculated. The influences of geometry size and crack size of the detail on the stress intensity factors were then investigated. The Paris model of fatigue crack propagation predicted the crack propagation life of cope-hole details. Besides, the fatigue limit-state equation was also established to analyse the effect of random variables (such as initial crack size, critical crack size, crack propagation parameter) on the fatigue reliability index. Finally, the recommended value of the detection period was present. The results show that the stress intensity factor gradually increases with the increase of the cope-hole radius, the weld size, the flange plate thickness, the crack length and the web thickness. However, it gradually decreases with the increase of the ratio of the long and short axle to the crack. The predicted number of fatigue cyclic loading required by the fatigue crack depth propagating from 0.5 mm to 16 mm under nominal stress amplitude of 63 MPa is 122.22 million times. The fatigue reliability index decreases with the fatigue growth parameter, the crack shape ratio and the mean of initial crack size increasing, which is relatively sensitive. However, the variation coefficient of the initial crack size has little effect on it. The detection period of cope-hole details is the service time corresponding to the fatigue accumulated cyclic loading of 198.3 million times.

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Development of a fatigue experiment for the stiffener-to-deck plate connection in Orthotropic Steel Decks

Cited by 25 publications

References 12 publications

Fatigue failure modes of rib‐to‐deck joints under the multiaxial stress states caused by various wheel loading characteristics

Fatigue failure modes of rib‐to‐deck joints under the multiaxial stress states caused by various wheel loading characteristics

Fatigue Performance of Rib-to-Deck Joints Strengthened With Internal Welding

Fatigue Life Assessment and Reliability Analysis of Cope-Hole Details in Steel Bridges

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