Evaluation of Seismic Behavior of RC Frame Retrofitted with Different Configuration of FRP
Rishath Sabrin1, Mohammad Al Amin Siddique2
1Rishath Sabrin, Lecturer, Department of Civil Engineering, Ahsanullah University of Science & Technology, Dhaka, Bangladesh.
2Dr. Mohammad Al Amin Siddique, Associate Professor, Department of Civil Engineering, Bangladesh University of Engineering & Technology, Dhaka, Bangladesh.
Manuscript received on January 02, 2018. | Revised Manuscript received on January 15, 2018. | Manuscript published on February 15, 2018. | PP: 9-15 | Volume-5, Issue-2, February 2018. | Retrieval Number: B1062025218
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© The Authors. Published By: Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: For the requirement/need of retrofitting, in recent years, Fiber Reinforced Polymers (FRP) become engineer’s choice to increase strength and ductility of reinforced concrete (RC) beams, columns and beam-column joints because of its’ light weight, higher strength, and ease of applications to the existing members. To attain better performance, better configuration of retrofitting should be selected. In this paper, nonlinear static pushover analysis has been carried out with the commercial software ETABS v.9.6.0 to investigate seismic performance criteria i.e. ductility, over-strength, response modification factor of moment resisting RC frames retrofitted with different level of FRP additions and compared with the bare frame. From the analyses in general, both the load carrying capacity and displacement at failure is enhanced. In comparison to the bare frame, inter-story drift index at any floor level of the retrofitted frame is decreased for the same level of base shear capacity. Proper retrofitting scheme can be adopted from the analysis as per the requirement criteria of the project/design engineer.
Keywords: Fiber Reinforced Polymer (FRP), Pushover analysis, Response Modification Factor, Retrofitting.