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Behavior of high-strength circular concrete-filled steel tubular (CFST) column under eccentric loading

Lee, Seong-Hui / Uy, Brian / Kim, Sun-Hee / Choi, Young-Hwan / Choi, Sung-Mo

Abstract In this study, to estimate the behavior of a circular CFST column under eccentric loading, an experimental test and fiber element analysis on 11 circular stub CFST column specimens were conducted. The parameters of specimens were high strength steel (above $F_{y} = 450 MPa$ ) and concrete ( $f_{ck} = 31.5 MPa$ , 59 MPa), diameter–thickness ratio ( $D / t = 25$ , 40, 60, 80, 100) and eccentric distance ( $e = 0 D, 0.167 D, 0.5 D$ ). The results from the experimental tests and fiber element analysis were compared with AISC (2005) , Eurocode 4 (1994) , and KBCS (2009) to verify the suitability of the analysis in the codes. From the analysis results, it is considered that AISC , and KBCS show good agreement for the circular CFST column under eccentric loading and that Eurocode 4 overestimates the load–moment relation of the circular CFST column under eccentric loading.

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Behavior of high-strength circular concrete-filled steel tubular (CFST) column under eccentric loading

Lee, Seong-Hui / Uy, Brian / Kim, Sun-Hee / Choi, Young-Hwan / Choi, Sung-Mo

Abstract In this study, to estimate the behavior of a circular CFST column under eccentric loading, an experimental test and fiber element analysis on 11 circular stub CFST column specimens were conducted. The parameters of specimens were high strength steel (above $F_{y} = 450 MPa$ ) and concrete ( $f_{ck} = 31.5 MPa$ , 59 MPa), diameter–thickness ratio ( $D / t = 25$ , 40, 60, 80, 100) and eccentric distance ( $e = 0 D, 0.167 D, 0.5 D$ ). The results from the experimental tests and fiber element analysis were compared with AISC (2005) , Eurocode 4 (1994) , and KBCS (2009) to verify the suitability of the analysis in the codes. From the analysis results, it is considered that AISC , and KBCS show good agreement for the circular CFST column under eccentric loading and that Eurocode 4 overestimates the load–moment relation of the circular CFST column under eccentric loading.

Behavior of high-strength circular concrete-filled steel tubular (CFST) column under eccentric loading

Lee, Seong-Hui / Uy, Brian / Kim, Sun-Hee / Choi, Young-Hwan / Choi, Sung-Mo

Abstract In this study, to estimate the behavior of a circular CFST column under eccentric loading, an experimental test and fiber element analysis on 11 circular stub CFST column specimens were conducted. The parameters of specimens were high strength steel (above $F_{y} = 450 MPa$ ) and concrete ( $f_{ck} = 31.5 MPa$ , 59 MPa), diameter–thickness ratio ( $D / t = 25$ , 40, 60, 80, 100) and eccentric distance ( $e = 0 D, 0.167 D, 0.5 D$ ). The results from the experimental tests and fiber element analysis were compared with AISC (2005) , Eurocode 4 (1994) , and KBCS (2009) to verify the suitability of the analysis in the codes. From the analysis results, it is considered that AISC , and KBCS show good agreement for the circular CFST column under eccentric loading and that Eurocode 4 overestimates the load–moment relation of the circular CFST column under eccentric loading.

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Title:

Behavior of high-strength circular concrete-filled steel tubular (CFST) column under eccentric loading

Contributors:

Lee, Seong-Hui (author) / Uy, Brian (author) / Kim, Sun-Hee (author) / Choi, Young-Hwan (author) / Choi, Sung-Mo (author)

Published in:

Journal of Constructional Steel Research ; 67 ; 1-13

Publication date:

2010-07-09

Size:

13 pages

ISSN:

DOI:

https://doi.org/10.1016/j.jcsr.2010.07.003

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

Keywords:

Thin-walled circular CFST column , Diameter–thickness ratio (<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>D</mi> <mo>/</mo> <mi>t</mi></math>) , Local buckling , Fiber element analysis , Load–moment relation

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