Multiaxial Fatigue Damage Assessment of Welded Connections in Railway Steel Bridge using Critical Plane Approach

Praveen, K; Mishra, Shambhu Sharan; Babu, P. Mahesh; Spagnoli, Andrea; Carpinteri, Andrea

doi:10.1016/j.proeng.2018.02.073

Cited by 3 publications

(1 citation statement)

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“…The simulation is based on a microstructure sensitive crystal plasticity model, which is used to quantify the fatigue index parameter (FIP) at the level of the slip system, and a fatigue model that correlates FIP with the fatigue life of a single grain. In 2018, K. R. et al [19] studied the applicability and appropriateness of the C-S criterion based on the critical plane method in fatigue damage assessment of welded joints of railway steel bridges. In 2020, Mashayekhi et al [20] proposed a fatigue assessment scheme for these complex key components of steel bridges using the hot spot stress method.…”

Section: Introductionmentioning

confidence: 99%

Fatigue Performance Evaluation of K-Type Joints in Long-Span Steel Truss Arch Bridge

Liu

Chen

et al. 2022

Metals

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The K-type joint, which consists of the web members and the chord members with varied angles welded together, has been widely adopted in long-span steel truss bridges. However, its fatigue performance has been rarely considered, despite its critical role in bridge structural safety and durability. Accordingly, the FE model of the K-type joint was established in Abaqus and the fatigue performance analysis was conducted, in which the effect of web/chord thickness ratio (τ), chord/web angle (θ), and chord with rib stiffener were investigated. Take the Mingzhu Bay steel truss arch bridge as an engineering background, the hot spot stress method was employed to calculate the fatigue performance of three K-type joints in unfavorable locations. Furthermore, a 3D full-scall bridge model was built to evaluate the fatigue performance of the K-type joints under standard and overloaded moving vehicle load scenarios. The results show that the max hot spot stress factor (SCFmax) of the web and chord member is influenced by τ and θ. The chord members added stiffener is founded to be an effective way to enhance fatigue performance. The fatigue stress intensities of the three unfavorable locations meet the Eurocode 3 specification requirements, but the one in the mid-truss arch is not satisfied under an overloaded vehicle loading rate of 25%.

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Section: Introductionmentioning

confidence: 99%