標題: Axial load behavior of stiffened concrete-filled steel columns
作者: Huang, CS
Yeh, YK
Liu, GY
Hu, HT
Tsai, KC
Weng, YT
Wang, SH
Wu, MH
土木工程學系
Department of Civil Engineering
關鍵字: tubes;axial loads;finite element method;stiffening;steel columns
公開日期: 1-九月-2002
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.
URI: http://dx.doi.org/10.1061/(ASCE)0733-9445
http://hdl.handle.net/11536/28561
ISSN: 0733-9445
DOI: 10.1061/(ASCE)0733-9445
期刊: JOURNAL OF STRUCTURAL ENGINEERING-ASCE
Volume: 128
Issue: 9
起始頁: 1222
結束頁: 1230
顯示於類別:期刊論文


文件中的檔案:

  1. 000177514600014.pdf