Axial load behavior of stiffened concrete-filled steel columns

Chiung-Shiann Huang*, Y. K. Yeh, G. Y. Liu, H. T. Hu, K. C. Tsai, Y. T. Weng, S. H. Wang, M. H. Wu

*Corresponding author for this work

研究成果: Article同行評審

230 引文 斯高帕斯(Scopus)

摘要

This study investigates the axial load behavior of concrete-filled steel tubular (CFT) columns with the width-to-thickness ratios between 40 and 150, and proposes an effective stiffening scheme to improve the mechanical properties of square cross-sectional CFT columns. Seventeen specimens were tested to examine the effects of cross-sectional shapes, width-to-thickness ratios, and stiffening arrangements on the ultimate strength, stiffness, and ductility of CFT columns. Moreover, nonlinear finite element analysis was also conducted to investigate cross-sectional axial stress distribution at the ultimate strength. Comparing the measured ultimate strength with estimates by using some current specifications suggested that current specifications may considerably underestimate the ultimate strength of circular CFT columns, particularly for columns with a small width-to-thickness ratio. Results in this study demonstrate that the proposed stiffening scheme can significantly enhance the ultimate strength and ductility of square CFT columns.

原文English
頁(從 - 到)1222-1230
頁數9
期刊Journal of Structural Engineering
128
發行號9
DOIs
出版狀態Published - 1 一月 2002

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