Box concrete-encased, concrete-filled steel tube (CFST) piers have been used in bridges in high-earthquake-intensity regions in China in recent years. They are expected to have higher strength and better ductility than normal box reinforced concrete members owing to the contribution of CFSTs in the corners of the composite box section. However, studies on this type of composite piers are limited. This paper presents an experimental study on the behaviour of box concrete-encased CFST columns under eccentric compression. A total of 14 specimens, including 12 box concrete-encased CFST specimens and two reference box reinforced concrete specimens are tested. The main parameters in the test are height-to-width ratio and load eccentricity. A simplified method is proposed to predict the load capacity of the box concrete-encased CFST columns.
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October 2013
Research Article|
October 01 2013
Experimental behaviour of box concrete-encased CFST eccentrically loaded column
Yu-Feng An;
Yu-Feng An
PhD candidate, Department of Civil Engineering, Tsinghua University, Beijing, China
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Lin-Hai Han;
Lin-Hai Han
Professor, Department of Civil Engineering, Tsinghua University, Beijing, China
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Xiao-Ling Zhao
Xiao-Ling Zhao
Professor, Department of Civil Engineering, Monash University, Victoria, Australia; and National ‘1000-Talent' Chair Professor, Tsinghua University, Beijing, China
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Publisher: Emerald Publishing
Revision Received:
March 12 2013
Revision Requested:
July 30 2013
Accepted:
July 31 2013
Online ISSN: 1751-763X
Print ISSN: 0024-9831
ICE Publishing: All rights reserved
2013
Magazine of Concrete Research (2013) 65 (20): 1219–1235.
Article history
Revision Received:
March 12 2013
Revision Requested:
July 30 2013
Accepted:
July 31 2013
Citation
An Y, Han L, Zhao X (2013), "Experimental behaviour of box concrete-encased CFST eccentrically loaded column". Magazine of Concrete Research, Vol. 65 No. 20 pp. 1219–1235, doi: https://doi.org/10.1680/macr.13.00067
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