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http://dx.doi.org/10.12989/scs.2014.17.5.667

Experiments on the bearing capacity of tapered concrete filled double skin steel tubular (CFDST) stub columns  

Ren, Qing-Xin (School of Civil Engineering, Shenyang Jianzhu University)
Hou, Chao (Department of Civil Engineering, Tsinghua University)
Lam, Dennis (School of Engineering, University of Bradford)
Han, Lin-Hai (Department of Civil Engineering, Tsinghua University)
Publication Information
Steel and Composite Structures / v.17, no.5, 2014 , pp. 667-686 More about this Journal
Abstract
Tapered concrete filled double skin steel tubular (CFDST) columns have been used in China for structures such as electricity transmission towers. In practice, the bearing capacity related to the connection details on the top of the column is not fully understood. In this paper, the experimental behaviour of tapered CFDST stub columns subjected to axial partial compression is reported, sixteen specimens with top endplate and ten specimens without top endplate were tested. The test parameters included: (1) tapered angle, (2) top endplate thickness, and (3) partial compression area ratio. Test results show that the tapered CFDST stub columns under axial partial compression behaved in a ductile manner. The axial partial compressive behaviour and the failure modes of the tapered CFDST stub columns were significantly influenced by the parameters investigated. Finally, a simple formula for predicting the cross-sectional capacity of the tapered CFDST sections under axial partial compression is proposed.
Keywords
concrete filled steel tube (CFST); concrete filled double skin steel tube (CFDST); tapered column; axial partial compression; cross-sectional capacity;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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