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Axial load behaviour of high-strength rectangular concrete-filled steel tubular stub columns

Liu, Dalin / Gho, Wie-Min

AbstractThis paper presents an experimental investigation into the axial load behaviour of rectangular concrete-filled steel tubular (CFT) stub columns. A total of 26 specimens were tested under concentric compression. The primary test parameters were material strengths ( ${f^{'}}_{c} = 55 - 106$ MPa; fy=300 and 495MPa) and cross-sectional aspect ratio (1.0–2.0). Favourable ductility performance was observed for all specimens during the tests. A comparison of axial load capacity between the tests and the design codes shows that ACI and AISC give safe estimation by 7 and 8%, respectively. On the other hand, EC4 overestimates the ultimate capacity of the specimens fabricated from mild steel and high-strength concrete. A fibre model is developed to evaluate the axial load behaviour of the specimens. Calibration of the model against the test data suggests that it can closely predict the non-linear behaviour of high-strength rectangular CFT stub columns.

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Axial load behaviour of high-strength rectangular concrete-filled steel tubular stub columns

Liu, Dalin / Gho, Wie-Min

AbstractThis paper presents an experimental investigation into the axial load behaviour of rectangular concrete-filled steel tubular (CFT) stub columns. A total of 26 specimens were tested under concentric compression. The primary test parameters were material strengths ( ${f^{'}}_{c} = 55 - 106$ MPa; fy=300 and 495MPa) and cross-sectional aspect ratio (1.0–2.0). Favourable ductility performance was observed for all specimens during the tests. A comparison of axial load capacity between the tests and the design codes shows that ACI and AISC give safe estimation by 7 and 8%, respectively. On the other hand, EC4 overestimates the ultimate capacity of the specimens fabricated from mild steel and high-strength concrete. A fibre model is developed to evaluate the axial load behaviour of the specimens. Calibration of the model against the test data suggests that it can closely predict the non-linear behaviour of high-strength rectangular CFT stub columns.

Axial load behaviour of high-strength rectangular concrete-filled steel tubular stub columns

Liu, Dalin / Gho, Wie-Min

AbstractThis paper presents an experimental investigation into the axial load behaviour of rectangular concrete-filled steel tubular (CFT) stub columns. A total of 26 specimens were tested under concentric compression. The primary test parameters were material strengths ( ${f^{'}}_{c} = 55 - 106$ MPa; fy=300 and 495MPa) and cross-sectional aspect ratio (1.0–2.0). Favourable ductility performance was observed for all specimens during the tests. A comparison of axial load capacity between the tests and the design codes shows that ACI and AISC give safe estimation by 7 and 8%, respectively. On the other hand, EC4 overestimates the ultimate capacity of the specimens fabricated from mild steel and high-strength concrete. A fibre model is developed to evaluate the axial load behaviour of the specimens. Calibration of the model against the test data suggests that it can closely predict the non-linear behaviour of high-strength rectangular CFT stub columns.

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Title:

Axial load behaviour of high-strength rectangular concrete-filled steel tubular stub columns

Contributors:

Liu, Dalin (author) / Gho, Wie-Min (author)

Published in:

Thin-Walled Structures ; 43 ; 1131-1142

Publication date:

2005-03-31

Size:

12 pages

ISSN:

DOI:

https://doi.org/10.1016/j.tws.2005.03.007

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

Keywords:

Axial loading , CFT column , Concrete , High-strength , Steel

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