Earticle

초록

영어

This research proposed a seismic strengthening technique of Pre-stressing Steel Frame methodology (PSF) for existing R/C buildings in order to enhance the connection performance and constructability. The PSF system, proposed in this study, is a type of strength-enhancing reinforcement systems to easily increase the ultimate horizontal shear capacity of R/C structures without seismic details. The PSF method increased the seismic reinforcement effect and constructability by separating the reinforcement H-frames into two parts for improving the integration of connections between the existing R/C frame and the strengthening member by using pre-stressing technique. Two test specimens of full-size two-story R/C frames were fabricated based on an existing domestic R/C building without seismic details, and then retrofitted by using the proposed PSF seismic system. Pseudo-dynamic testing was conducted to evaluate seismic rehabilitation 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 to the control specimen without strengthening frame. Test results revealed that the proposed PSF reinforcement system 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. PSF 내진보강법 개요
3. 유사동적실험의 개요
3.1 기존실험법 및 유사동적실험법의 개요
3.2 유사동적 실험시스템
3.3 사용재료의 특징
3.4 실험체 개요 및 실험변수
3.5 PSF 내진보강실험체의 접합부 설계
4. 유사동적 실험의 결과 및 분석
4.1 균열 및 파괴양상
4.2 최대 지진응답 하중 및 변위
4.3 하중-변위 및 변위-시간이력 결과 분석
5. 결론
REFERENCES

키워드

철근콘크리트 내진보강 프리스트레싱 내력증진형 내진성능평가 유사동적실험 Reinforced concrete Seismic rehabilitation Pre-stressing Strength increasing method Seismic performance evaluation Pseudo-dynamic testing

저자

• 백호진 [ Back, Ho-Jin | 한양대학교 대학원 건축공학과 박사과정 ]
• 이강석 [ Lee, Kang-Seok | 한양대학교 에리카 건축학부&스마트시티공학과 교수, 공학박사 ] Corresponding Author

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