Numerical model for the behavior and capacity of circular CFT columns, Part II: Verification and extension

This paper deals with the behavior and capacity of circular concrete-filled tube stub columns under extreme loading conditions. The numerical model, presented in the companion paper, is verified with the aid of comparisons against the existing experimental and analytical results. Furthermore, the proposed method is extended where the analytical relations for the capacity of circular CFT columns are presented. These relations are valuable in the practice of engineering design since they provide a direct, compact and efficient representation of the ultimate strength of circular CFT columns. The comparisons between numerical, analytical and experimental results demonstrate that the proposed methods provide very good numerical performance for the behavior of circular CFT columns.

[1]  C. S. Cai,et al.  Experimental behavior of circular concrete-filled steel tube stub columns , 2007 .

[2]  Lin-Hai Han,et al.  Behaviour of concrete-filled hollow structural steel (HSS) columns with pre-load on the steel tubes , 2003 .

[3]  Keh-Chyuan Tsai,et al.  AXIAL LOAD BEHAVIOR OF STIFFENED CONCRETE-FILLED STEEL COLUMNS , 2002 .

[4]  Jerome F. Hajjar,et al.  Representation of Concrete-Filled Steel Tube Cross-Section Strength , 1996 .

[5]  Dennis Lam,et al.  Axial capacity of circular concrete-filled tube columns , 2004 .

[6]  Raphael H. Grzebieta,et al.  Concrete-filled circular steel tubes subjected to pure bending , 2001 .

[7]  George D. Hatzigeorgiou,et al.  Numerical model for the behavior and capacity of circular CFT columns, Part I. Theory , 2008 .

[8]  Russell Q. Bridge,et al.  DESIGN OF CIRCULAR THIN-WALLED CONCRETE FILLED STEEL TUBES , 2000 .

[9]  Hirak Kumar Sen.  Triaxial effects in concrete-filled tubular steel columns , 1969 .

[10]  Young-Suk Oh,et al.  Strength of Axially Loaded Concrete-Filled Tubular Stub Column. , 2001 .

[11]  C. Y. Lin.  Axial Capacity of Concrete Infilled Cold-formed Steel Columns , 1988 .

[12]  Russell Q. Bridge,et al.  Circular Thin-Walled Tubes with High Strength Concrete Infill , 1997 .

[13]  Hanbin Ge,et al.  Uniaxial stress–strain relationship of concrete confined by various shaped steel tubes , 2001 .

[14]  Jiansheng Fan,et al.  Strength of Concrete Filled Steel Tubular Columns , 2006 .

[15]  Masahide Tomii,et al.  Experimental Studies on Concrete-Filled Steel Tubular Stub Columns under Concentric Loading , 1977 .

[16]  Bahram M. Shahrooz,et al.  Strength of Short and Long Concrete-Filled Tubular Columns , 1999 .