Performance of Concrete-Filled Steel Tubes subjected to Eccentric Tension
Publication: Journal of Structural Engineering
Volume 141, Issue 12
Abstract
Concrete-filled steel tubular (CFST) members have been used in various kinds of construction projects. They can be subjected to tension when they are used as chord members in trusses or subjected to combined tension and bending in building columns. However, to date research on the behavior of CFST members under eccentric tension is still limited. This paper thus presents both experimental and numerical investigations on the eccentrically loaded CFST tensile members. The experimental parameters include the eccentricity of the load and the steel ratio of the cross section. The failure modes show that the in-filled concrete works effectively with the steel tube, and the outer tube improves the crack pattern of the concrete. The finite-element (FE) model is also developed and validated by experimental results. The validated FE model is then used to assess the load and moment distributions as well as the load-moment interaction relationship. Finally, the load-carrying capacities of CFST members under eccentric tension are discussed.
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Acknowledgments
This research is part of Projects 51208281 supported by the National Natural Science Foundation of China (NSFC) and the Tsinghua Initiative Scientific Research Program (No. 2013Z02). The financial support is highly appreciated. The third author would also like to express his gratitude to the Tsinghua Visiting Scholars Fund for supporting his visits to Tsinghua University.
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Published In
Journal of Structural Engineering
Volume 141 • Issue 12 • December 2015
Copyright
© 2015 American Society of Civil Engineers.
History
Received: Mar 31, 2014
Accepted: Feb 11, 2015
Published online: Mar 13, 2015
Discussion open until: Aug 13, 2015
Published in print: Dec 1, 2015
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