Seismic Behavior of Shear-Critical Reinforced High-Strength Concrete Columns
Publication: Journal of Structural Engineering
Volume 141, Issue 8
Abstract
An experimental investigation has been conducted to examine the seismic behavior of seven shear-critical, high-strength concrete columns and one normal-strength concrete column. The effects of compressive strength of concrete, shear span-to-depth ratio, axial-load ratio, and transverse reinforcement amount on shear capacity, ductility capacity, energy dissipation, and stiffness degradation were critically examined. Test results indicate that increase in shear span-to-depth ratio and confinement effectiveness, and reduction in axial load, resulted in increase of energy dissipation capacity and ductility. Compared with the test results, predictions of shear strength from three available models may not be directly applicable to the shear-critical, high-strength concrete columns, whereas the calculated values by the truss-arch model considering the condition of deformation compatibility are shown to be consistent with the test data.
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Acknowledgments
The financial assistances provided by the National Natural Science Foundation of China (Grant No. 51208093) and by the Doctoral Program of the Ministry of Education, China (Grant Nos. 20120092110014 and 20120092120021) are gratefully acknowledged.
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Published In
Journal of Structural Engineering
Volume 141 • Issue 8 • August 2015
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Dec 16, 2013
Accepted: Aug 8, 2014
Published online: Sep 16, 2014
Discussion open until: Feb 16, 2015
Published in print: Aug 1, 2015
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