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http://dx.doi.org/10.12989/scs.2022.45.4.563

Experimental and numerical investigation of RC frames strengthened with a hybrid seismic retrofit system  

Luat, Nguyen-Vu (Deep Learning Architecture Research Center, Department of Architectural Engineering, Sejong University)
Lee, Hongseok (Deep Learning Architecture Research Center, Department of Architectural Engineering, Sejong University)
Shin, Jiuk (Department of Architectural Engineering, Gyeongsang National University)
Park, Ji-Hun (Division of Architecture and Urban Design, Incheon National University)
Ahn, Tae-Sang (Research Center, Korea Disaster Prevention Technology)
Lee, Kihak (Deep Learning Architecture Research Center, Department of Architectural Engineering, Sejong University)
Publication Information
Steel and Composite Structures / v.45, no.4, 2022 , pp. 563-577 More about this Journal
Abstract
This paper presents experimental and numerical investigations of a new seismic enhancement method for existing reinforced concrete (RC) frames by using an external sub-structure, the hybrid seismic retrofit method (HSRM) system. This retrofit system is an H-shaped frame bolt-connected to an existing RC frame with an infilled-concrete layer between their gaps. Two RC frames were built, one with and one without HSRM, and tested under cyclic loading. The experimental findings showed that the retrofitted RC frame was superior to the non-retrofitted specimen in terms of initial stiffness, peak load, and energy dissipation capacity. A numerical simulation using a commercial program was employed for verification with the experiments. The results obtained from the simulations were consistent with those from the experiments, indicating the finite element (FE) models can simulate the seismic behaviors of bare RC frame and retrofitted RC frame using HSRM.
Keywords
cyclic loading; FEM; LS-DYNA; retrofitted RC frame; seismic retrofit method;
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Times Cited By KSCI : 12  (Citation Analysis)
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