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Title |
Seismic Capacity Evaluation of Full-size Two-story R/C Frame Strengthened with HSWF External Connection Method by Pseudo-dynamic Test
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Authors |
이복기(Bok-Gi Lee) ; 황대성(Dae-Sung Hwang) ; 최윤철(Yun-Chul Choi) ; 김유석(You-Sok Kimi) ; 이강석(Kang-Seok Lee) |
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DOI |
https://doi.org/10.4334/JKCI.2019.31.1.089 |
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Keywords |
철근콘크리트 ; 유사동적실험 ; 내진보강 ; 내진성능 ; 외부접합 reinforced concrete buildings ; pseudo-dynamic ; seismic strengthening ; seismic capacity ; external connection |
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Abstract |
A new HSWF (H-section Steel Window-typed Frame) external connection method was proposed for seismic strengthening of existing medium-and low-rise reinforced concrete buildings in this study. The external connection technique was developed considering the structural integral behavior between existing frame and strengthening member. The HSWF method, proposed in this study, is capable of carrying out the seismic rehabilitation construction while residents can live inside structures. The method is one of the strength design approach by retrofit which can easily increase the ultimate lateral load capacity of concrete buildings controlled by shear. Two full-size two-story reinforced concrete frames based on the existing school building without seismic details in Korea were designed and fabricated for the structural test. The pseudo-dynamic test was carried out in order to verify the seismic strengthening effects of the proposed method in terms of the maximum load carrying capacity and ductility. Test results revealed that the proposed HSWF strengthening method installed in reinforced concrete frame enhanced conspicuously the strength and displacement capacities, and the method can resist markedly under the large scaled earthquake intensity level.
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