Mechanical Performance of Steel Ring Restrainers with Corrosion Damage

Wang, Zhanfei; Ren, Hao; Zhang, Qiang; Sui, Weining; Sun, Jubo

doi:10.1007/s12205-021-0731-4

Cited by 9 publications

(2 citation statements)

References 38 publications

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“…3) The method of equivalent thickness is a common approach with acceptable accuracy (Bao et al 2021;Gao et al 2021;Karagah et al 2015;Shi et al 2014;Wang et al 2022), in which the corrosion damage is equivalent to the thickness loss (Ahn et al 2016(Ahn et al , 2018Saad-Eldeen et al 2013;Wu et al 2017;Zhang et al 2020a;Zhang et al 2020c). It has been adopted in the current codes and standards (ISO 2017;Kainuma 2019;MOHURD 2018;NILIM 2006;Veritas 2010) to evaluate and design corroded steel members.…”

Section: Simulation Methods Of Corrosionmentioning

confidence: 99%

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Seismic Performance Evaluation of Steel Circular Hollow Section Bridge Piers with Corroded Ends

Zhang

Wen

Han

et al. 2022

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Steel circular hollow section (CHS) bridge piers have been widely used in the engineering practices. However, end corrosion is one of the most common damages to steel bridge piers, leading to degradation of seismic performance and changing of failure modes. This paper investigates the seismic performance of the corroded steel CHS bridge piers and proposes a method to predict its lateral ultimate strength under the transverse cyclic loads. Firstly, the multi-scale finite element (FE) models of the CHS steel bridge pier are developed considering both the local buckling and the end corrosion, which are calibrated against the previous test results. Subsequently, the effects of the characteristic parameters (i.e., the corrosion conditions and the column parameters) on the failure modes and the horizontal ultimate strengths of the corroded steel CHS bridge piers are investigated, and then the sensitivity of the parameters is quantified using the Sobol method. Finally, a method is presented for estimating the ultimate strength of the end corroded steel CHS bridge piers under the horizontal cyclic loads. Results show that the end corroded bridge piers exhibit more significant stress concentration when comparing with the uncorroded bridge piers. The buckling half-wavelength is influenced by corrosion parameters, and the buckling position changes. The ultimate strengths of end corroded bridge piers are reduced, which is more sensitive to the corrosion rate. The proposed theoretical method to predict the ultimate strengths of corroded steel CHS bridge piers is accurate enough with errors less than 10%.

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Section: Simulation Methods Of Corrosionmentioning

confidence: 99%

“…The degradation factor is commonly used to analyze the performance degradation of the members after damage (Bao et al 2021;Kim et al 2021;Wang et al 2022).…”

Section: Ultimate Strength Degradation Factormentioning

confidence: 99%