The effect of width-to-thickness ratio on the structural performance of high strength steel CFT column

Author(s): G. Hong, W. Kim, I. Choi, K. Chung
Paper category: Proceedings
Book title: Proceedings of the Seventh International Conference on Concrete under Severe Conditions – Environment and Loading
Editor(s): Z.J. Li, W. Sun, C.W. Miao, K.Sakai, O.E. Gjørv, N.Banthia
ISBN: 978-2-35158-124-7
e-ISBN: 978-2-35158-134-6
Publisher: RILEM Publications SARL
Publication year: 2013
Pages: 853-861
Total Pages: 9
Language : English

Abstract: Concrete filled steel tube (CFT) column has been widely used in the tall buildings as it takes excellent structural performance compared with other structural systems. The use of high strength steel in CFT column can especially reduce the overall member size and increase the effective space. But, the limit of width-to-thickness ratio in the code can be a block to using the high strength steel in CFT columns because the thickness of steel become considerably thicker following to the steel strength increase. This paper write up the effect of width-to-thickness ratio on the structural performance of CFT column using 800 MPa Grade high strength steel and 30 MPa normal strength concrete. Four short column specimens with round section were tested under axial compression. Main test variables were width-to-thickness ratio with compact and non-compact values of the AISC 360-10 specification. Test results were analyzed in the viewpoint of axial load capacity, local buckling strength, yield strength of steel plate, confinement effect of concrete strength, plastic deformation capacity of specimens and failure mode.

Online publication : 2013
Publication type : full_text
Public price (Euros) : 0.00