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Title |
Numerical Study on the Estimation of Surface Constrained Pressure for Ductile Behavior of RC Columns
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Authors |
김경민(Kyeong-Min Kim) ; 이수영(Su-Young Lee) ; 김건우(Geon-Woo Kim) ; 권민호(MinHo Kwon) ; 김진섭(JinSup Kim) |
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DOI |
https://doi.org/10.11112/jksmi.2021.25.3.48 |
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Keywords |
내진보강; RC 기둥; 연성거동; 표면구속응력 Seismic retrofit; RC Column; Ductile behavior; Surface constrained pressure |
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Abstract |
Due to the recent earthquake that has occurred worldwide, interest in seismic reinforcement of structures is increasing. In order to improve the seismic performance of the structure, the seismic reinforcement of the column should be made. Various seismic retrofit methods are being developed to improve the seismic performance of columns. In this study, in order to improve the seismic performance of RC columns, an numerical study was conducted to evaluate the seismic performance of the columns by applying a surface constrained pressure. For the numerical study, the experimental study on the column was used, and the failure shape and behavior characteristics of the experimental results and the numerical results were compared. As a result of the numerical study, the ductile behavior of the RC columns occurred according to the strength of the surface constraining stress. In addition, ductile behavior occurred almost constant above a certain surface constrained pressure. Compared with the numerical results and the experimental results, he reinforcing effect of the used seismic reinforcement of the column in experimental study was compared with the value of the surface constrained pressure for the RC column, and the seismic reinforcing effect was examined as the surface constrained pressure value for the RC column. In conclusion, in this work, surface constrained stress and constrained strength for ductile behavior of RC columns are derived. Based on the results derived, it is believed that it can be used as basic data on the review of seismic design methods and seismic performance complementary effects using ductile behavior induction of RC columns.
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