Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/36793
Title: Hybrid FRP-concrete-steel double-skin tubular columns : cyclic axial compression tests
Authors: Yu, T
Cao, YB
Zhang, B
Teng, JG 
Keywords: Axial
Cyclic
Compression
Tests
Tubular
Columns
Skin
Double
Steel
Concrete
FRP
Hybrid
Issue Date: 2012
Source: Proceedings of the 6th International Conference on FRP Composites in Civil Engineering, Rome, Italy, 13-15 June 2012 (CD-ROM) How to cite?
Abstract: Hybrid FRP-concrete-steel double-skin tubular columns (hybrid DSTCs) are a new form of hybrid columns recently developed at The Hong Kong Polytechnic University. A hybrid DSTC consists of an inner steel tube, an outer FRP tube and a concrete infill between the two tubes. Hybrid DSTCs possess many important advantages over existing column forms, including their excellent corrosion resistance and excellent seismic resistance. While a large amount of research has been conducted on the monotonic behavior of this novel form of columns, only a limited amount of work has been conducted on their behavior under cyclic loading. This paper presents the first experimental study on hybrid DSTCs under cyclic axial compression, with a particular emphasis on the effect of different cyclic loading schemes and on the behavior of the confined concrete. Hybrid DSTCs are shown by these tests to be very ductile under cyclic axial compression, with an envelope axial load-strain curve being almost the same as the axial load-strain curve of a corresponding DSTC under monotonic compression. It is also shown that repeated unloading/reloading cycles have a cumulative effect on the permanent strain and the stress deterioration of the confined concrete in hybrid DSTCs.
URI: http://hdl.handle.net/10397/36793
Appears in Collections:Conference Paper

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