Nonlinear static analysis and preliminary evaluation were performed in this study to evaluate the seismic performance of unreinforced masonry buildings subjected to various soil conditions based on the revised Korean Building Code. Preliminary evaluation scores and nonlinear static analyses indicated that all buildings were susceptible to collapse and did not reach their target performance. Therefore, retrofit of those building models was carried out through a systematic procedure to determine areas to be strengthened. It was possible to make most building models satisfy performance objectives through the reinforcement alone of damaged external shear walls. However, the application of a preliminary evaluation procedure to retrofit design was found to be too conservative because all the retrofitted building models verified with nonlinear static analysis failed to satisfy performance objectives. Therefore, it is possible to economically retrofit unreinforced masonry buildings through the fortification of external walls if a simple evaluation procedure that can efficiently specify vulnerable parts is developed.

A B S T R A C T
1. 서 론
2. 내진성능평가 조건
    2.1 대상 건물
    2.2 지진하중
3. 예비평가
4. 비선형정적해석
    4.1 재료강도 및 탄성계수
    4.2 부재 비탄성 모델
    4.3 해석조건 및 허용기준
    4.4 비선형정적해석의 결과
5. 보강 방안 및 보강 후 해석 결과
    5.1 보강 방안
    5.2 보강 후 비선형정적해석 결과
    5.3 보강 후 예비평가 결과
6. 결 론
REFERENCES

• 설윤정(인천대학교 일반대학원 건축학과) | Seol Yun Jeong (Department of Architectural Design and Engineering, Incheon National University)
• 박지훈(인천대학교 도시건축학부) | Park Ji-Hun (Division of Architecture and Urban Design, Incheon National University) Corresponding author