논문 상세보기
In this study, the out-of-plane seismic resistance of lightly-reinforced existing walls strengthened with thick RC jacket was investigated. The thick RC jacket with a thickness of 500 mm was placed at one side of the thin existing wall with a thickness of 150 mm. At the interface between the wall and RC jacket, a tee-shaped steel section with a number of anchor bolts and dowel bars was used as the shear connector. To investigate the connection performance and strengthening effects, the cyclic loading tests of four jacketed wall specimens were performed. The tests showed that the flexural strength of the jacketed walls under out-of-plane loading was significantly increased. During the initial behavior, the tee shear connector transferred forces successfully at the interface without slip. However, as the cracking, spalling, and crushing of the concrete increased in the exiting walls, the connection performance at the interface was significantly degraded and, consequently, the strength of the jacketed walls was significantly decreased. The flexural strength of the jacketed walls with tee shear connector was estimated considering the full and partial composite actions of the tee shear connector.
1. 서 론
2. 실험 계획
2.1 실험체 상세 및 제작
2.2 재료 강도
3. 실험 결과
3.1 하중-변위 관계 및 파괴모드
3.2 변형률 계측 결과
4. 결과 분석 및 강도 평가
4.1 실험결과 요약
4.2 자켓보강 벽체의 휨강도 평가
5. 결 론
REFERENCES
