Experimental and Analytical Evaluation of Concrete-Filled Crisscross Steel Tubular Columns Subjected to Earthquake Loads
Publication: Journal of Performance of Constructed Facilities
Volume 28, Issue 6
Abstract
Concrete-filled steel tubular columns have been studied extensively worldwide. Such columns provide stable energy dissipation, which is ideal for earthquake engineering application. However, most applications use rectangular steel tubular sections. In the location of wall intersections, these sections often create sharp corners, which are architecturally displeasing. In some facilities such as schools and correctional facilities, sharp corners are even prohibited due to their potential hazard to occupants. To resolve the issue, concrete-filled crisscross steel tubular columns (CCSTCs) have been proposed. Three half-scaled specimens were constructed and tested under cyclic displacement loading history. The experimental results were used to calibrate numerical models of the components and further used to examine the seismic behavior of a three-story prototype office building located in Los Angeles. The results showed the proposed CCSTC has excellent energy dissipation and postearthquake performance, and hence it can be used as an alternative lateral force resisting system for seismic applications.
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Acknowledgments
This work was funded in part by the National Natural Science Foundation of China (No: 50978033). Any opinions, findings and conclusions or recommendations expressed in this study are those of the authors and do not necessarily reflect those of the National Natural Science Foundation of China.
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© 2014 American Society of Civil Engineers.
History
Received: May 9, 2013
Accepted: Nov 26, 2013
Published online: Nov 28, 2013
Discussion open until: Oct 28, 2014
Published in print: Dec 1, 2014
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