Residual Compressive Strength of Short Tubular Steel Columns with Artificially Fabricated Local Corrosion Damage

Abstract

Corrosion is considered as one of the main factors in the structural performance deterioration of steel members. In this study, experimental and numerical methods were used to assess the reduction in compressive strength of short tubular steel columns with artificially fabricated local corrosion damage. The corrosion damage was varied with different depths, heights, circumferences, and locations along the column. A parametric numerical study was performed to establish a correlation between the residual compressive strength and the severity of corrosion damage. The results showed that as the corrosion depth, height and circumference increased, the compressive strength decreased linearly. As for the corrosion height, the residual compressive strength became constant after decreasing linearly when the corrosion height was greater than the half-wavelength of buckling of the short columns. An equation is presented to evaluate the residual compressive strength of short columns with local corrosion wherein the volume of the corrosion damage was used as a reduction factor in calculating the compressive strength. The percentage error using the presented equation was found to be within 11.4%.

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Influencia del recubrimiento de cromato de zinc en la corrosión de los aceros ASTM A-500 y A-500 galvanizado expuestos en una cámara de niebla salina

“…Sin embargo, debe aplicarse correctamente, caso contrario, se puede acelerar la corrosión al presentar deslaminaciones o ampollas. La corrosión genera una pérdida de masa, principalmente en la reducción del área de la sección transversal y aunque sea muy baja, puede reducir la resistencia del material y llegar a generar una falla [3,4].…”

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“…Buckling is a classic mechanical problem, the concept of which was introduced by Euler (Euler, 1744). Over the years, buckling analysis has found wide application, including in civil engineering (Śledziewski & Górecki, 2020;Toledo et al, 2020), mechanical engineering (Czechowski et al, 2020;Kubit et al, 2019) or the maritime industry (Corigliano et al, 2019;Shen et al, 2020). Currently, there is a renewed interest in buckling, in particular in applications in composite structures (Rozylo et al, 2020;Schilling & Mittelstedt, 2020;Xu & Wu, 2008) or micro and nano technologies (Barretta et al, 2019;Chandra et al, 2020).…”