Numerical Investigations on the Seismic Behavior of FRP and TRM Upgraded RC Exterior Beam-Column Joints
Publication: Journal of Composites for Construction
Volume 16, Issue 3
Abstract
In this paper, a detailed procedure for nonlinear finite-element analysis of fiber reinforced polymer (FRP) and textile reinforced mortar (TRM) upgraded reinforced concrete (RC) beam-column exterior joints is presented for predicting their seismic performance under simulated earthquake loading. The finite-element (FE) model was developed using a smeared cracking approach for concrete and three-dimensional layered elements for the FRP and TRM-composites. The results obtained from FE analysis were compared with the test results. The tests were conducted on four as-built exterior beam-column joint specimens under simulated seismic loads. Out of these four specimens, one specimen was tested as a control specimen and the other three were tested after strengthening with TRM, carbon FRP, and glass FRP sheets, respectively. The FE results were compared with the test results through load-displacement behavior, ultimate loads, and crack pattern. Comparison of FE results with the experimentally observed response indicated that the proposed nonlinear FE model can accurately predict the behavior and response of tested RC beam-column joints.
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Acknowledgments
The authors extend their appreciation to the Deanship of Scientific Research at King Saud University for funding the work through the research group project No. RGP-VPP-064. Thanks are also extended to the MMB Chair for Research and Studies in Strengthening and Rehabilitation of Structures and the Saudi Aramco Chair for Earthquake Engineering at the Department of Civil Engineering at King Saud University for providing technical support.
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© 2012. American Society of Civil Engineers.
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Received: May 16, 2011
Accepted: Oct 31, 2011
Published online: Nov 3, 2011
Published in print: Jun 1, 2012
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