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Title: Concrete-filled steel tubular columns with internal confinement by high strength steel spirals
Authors: Teng, JG 
Zhang, J 
Wang, JJ 
Lin, G 
Feng, P
Keywords: Concrete-filled steel tubes
High strength steel
Confined concrete
Issue Date: 2016
Publisher: University of Hong Kong, Dept of Civil Engineering
Source: 8th International Conference on Steel and Aluminium Structures (ICSAS), Hong Kong, People's Republic of China, Dec 7-9, 2016 How to cite?
Abstract: Concrete filled steel tubular columns of non-circular section is much less ductile than their circular counterparts, particularly when high-strength concrete and thin/high strength steel tubes are used, which is a major concern fir structures designed to resist seismic loading. This paper presents the details of a new form of concrete-filled steel tubular columns recently proposed to address this problem and the rationale behind the new form; it also presents the first series of axial compression tests on such columns of square cross-section to demonstrate their advantages. These columns consist of a steel tube filled with concrete that is confined with high strength steel spirals typically with a yield stress exceeding 1000 MPa. The test results showed that the new form of columns, referred to as confined concrete-filled steel tubular (CCFST) columns, possesses much greater ductility than those without internal confinement as a result of the use of only a small amount of high strength steel as confining spirals.
ISBN: 978-962-8014-26-2
Appears in Collections:Conference Paper

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