MECHANICAL BEHAVIOR AND ULTIMATE STRENGTH OF CIRCULAR CFT COLUMNS SUBJECTED TO AXIAL COMPRESSION LOADS
In this paper, a simple formula for predicting the axial capacity of circular concrete-filled steel tube (CFT) stub columns is proposed. The concrete confinement, which depends mainly on the ratio of the external diameter of the steel tube to the plate thickness, the yield stress of the steel tube and the unconfined compressive strength of the filled concrete, is empirically deduced. A comparison with the experimental data published in the literature indicates that the present method provides more efficient representation of the ultimate strength of circular CFT stub columns than the existing codes, such as ACI-2005, AIJ-2001, Eurocode-2004 and DL/T-1999.
Composite columns Concrete Steel Tubes Capacity Confinement
Z.H. Lu Y.G. Zhao
Dept. of Architecture, Nagoya Institute of Technology, Nagoya, Japan
国际会议
14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)
北京
英文
2008-10-12（万方平台首次上网日期，不代表论文的发表时间）