Earticle

초록

영어

In this study, in order to enhance the connection performance between the existing reinforced concrete (R/C) frame and the strengthening member, we proposed a novel concept of CFT External Composite Methodology (CECM) for seismic retrofit of existing domestic medium-to-low-rise R/C buildings. The CECM method, proposed in this study, can conduct the seismic retrofitting construction while residents can live inside building. The CECM rehabilitation system is a type of strength-enhancing reinforcement systems, to easily increase the ultimate horizontal shear capacity of R/C structures without seismic details in Korea, which show shear collapse mechanism. Two test specimens of full-size two-story R/C frame were fabricated based on an existing domestic R/C building without seismic details, and then retrofitted by using the proposed CECM seismic system; therefore, one control test specimen and one test specimen reinforced with the CECM system were used. Pseudo-dynamic testing was conducted to evaluate seismic strengthening effects, and the seismic response characteristics of the proposed system, in terms of the maximum shear force, response story drift, and seismic damage degree compared with the control specimen (R/C bare frame). Experiment results indicated that the proposed ECCM reinforcement system, externally installed to the existing R/C frame, effectively enhanced the horizontal shear force, resulting in reduced story drift of R/C buildings under the maximum design earthquake level designated in KDS 41.

목차

Abstract
1. 서론
1.1 연구배경 및 목적
1.2 연구범위 및 방법
2. CFT 외부접합형 내진보강법 개요
3. 실험개요
3.1 사용재료의 특징
3.2 실험체 개요
3.3 CFT 외부접합형 보강실험체 개요
4. 유사동적실험 시스템
4.1 유사동적실험의 개요
4.2 유사동적 실험시스템
5. 유사동적 실험의 결과 및 분석
5.1 균열 및 파괴양상
5.2 최대 지진응답 하중 및 변위
5.3 하중-변위 및 변위-시간이력 결과 분석
6. 결론
REFERENCES

저자

• 김진영 [ Kim, Jin-Young | 한양대학교 대학원 건축시스템공학과 박사과정 ]
• 이강석 [ Lee, Kang-Seok | 한양대학교 건축학부 및 스마트시티공학과 교수, 공학박사 ] Corresponding Author

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