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Title |
Evaluation of Lateral Strength and Ductility of Velcro Reinforced RC Columns with Finite Element Analysis
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Authors |
김상우(Sang-Woo Kim) ; 김경민(Kyeong-Min Kim) ; 김건우(Geon-Woo Kim) ; 이수영(Su-Young Lee) ; 김진섭(Jin-Sup Kim) |
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DOI |
https://doi.org/10.11112/jksmi.2021.25.4.12 |
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Keywords |
보강재; 벨크로; RC기둥; 연성보강; 해석연구 Reinforcement; Velcro; RC column; Ductile reinforcement; Numerical analysis |
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Abstract |
Recently, with frequent earthquakes around the world, research on seismic design and seismic reinforcement of reinforced concrete facilitieshas been actively conducted from earthquakes. In particular, columns, which are compressed members of reinforced concrete structures, are vulnerableto lateral forces caused by earthquakes, so an appropriate seismic reinforcement method is required. Therefore, this study intended to develop Velcroseismic reinforcement method that is quick and easy to construct. For the development of Velcro seismic reinforcement, the adhesion and tensile strengthof the existing industrial velcro was improved. A direct tensile test was also conducted to compare the tensile performance of the newly-developed velcroseismic reinforcement to industrial one. In addition, numerical analysis was performed to predict the seismic performance of RC columns reinforcedby industrial and newly-developed velcro. Based on the analysis results, the strength and ductility of the non-seismic and velcro-reinforced RC columnwere reviewed. The analysis confirmed that both the strength and ductility of non-seismic RC columns reinforced by industrial and newly-developedvelcro increased, but the seismic performance of the newly-developed Velcro reinforcement is better than that of industrial velcro.
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