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This paper reports an experimental work carried out on the square concrete-filled double steel tubular (CFDST) slender columns with an inner circular tube under concentric loading. The influences of the column slenderness ratio and the thickness of the inner steel tube on the performance of the square CFDST slender column are investigated. The applicability of the design recommendations given by Eurocode 4 for conventional concrete-filled steel tubular columns is evaluated in designing square CFDST slender columns under concentric loading. It is found that the performance of the square CFDST slender column is significantly influenced by the column slenderness ratio and the thickness of the inner steel tube. Furthermore, the design specification given by Eurocode 4 significantly underestimates the ultimate strength of square CFDST slender columns under concentric loading. © 2022, Avestia Publishing. All rights reserved.
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ISSN： 2369-3002
Year： 2022
Language： English
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ESI Highly Cited Papers on the List： 0 Unfold All
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30 Days PV： 5
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