Response of RC Frames Strengthened by RC Infill Walls: Experimental Study
Publication: Journal of Structural Engineering
Volume 145, Issue 11
Abstract
The experimental results of a research program on the response of -scale reinforced concrete infilled frames are presented and evaluated. The main objective was to assess the seismic performance of RC frames infilled with a cast-in-place RC wall designed according to the Greek code for retrofitting existing buildings. Seven infilled RC frames with a height-to-length wall aspect ratio were subjected to cyclic horizontal excitation. The parameters of the experimental study included the infill-to-frame method of connection along the horizontal and/or vertical interfaces and the anchorage length of the shear connectors placed along the interfaces. The columns of two of the infilled frame specimens were strengthened by a closed RC jacket. The presence of the RC wall resulted in a significant increase of the ultimate strength, in-plane stiffness, energy dissipation, and, to a certain extent, higher ductility. Specimens with jacketed columns appeared to have the best response.
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Acknowledgments
The authors would like to thank the Earthquake Planning and Protection Organization (EPPO) of Greece for the financial support of this research and the technical staff members in the laboratory of RC structures, A. Koutselinis and D. Karaberopoulos, for their valuable contribution throughout the testing.
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Published In
Journal of Structural Engineering
Volume 145 • Issue 11 • November 2019
Copyright
©2019 American Society of Civil Engineers.
History
Received: Nov 27, 2017
Accepted: Mar 15, 2019
Published online: Aug 29, 2019
Published in print: Nov 1, 2019
Discussion open until: Jan 29, 2020
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