Seismic fragility functions for unreinforced masonry buildings were derived based on the incremental dynamic analysis of eight representative inelastic numerical models for application to Korea's earthquake damage estimation system. The effects of panel zones formed between piers and spandrels around openings were taken into account explicitly or implicitly regarding stiffness and inelastic deformation capacity. The site response of ground motion records measured at the rock site was used as input ground motion. Limit states were proposed based on the fraction of structural components that do not meet the required performance from the nonlinear static analysis of each model. In addition to the randomness of ground motion considered in the incremental dynamic analysis explicitly, supplementary standard deviation due to uncertainty that was not reflected in the fragility assessment procedure was added. The proposed seismic fragility functions were verified by applying them to the damage estimation of masonry buildings located around the epicenter of the 2017 Pohang earthquake and comparing the result with actual damage statistics.

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1. 서 론
2. 조적조 건물의 표준모델 선정
3. 비선형 해석모델
    3.1 개구부가 있는 벽체의 모델링
    3.2 재료강도
    3.3 벽체 및 피어
    3.4 스팬드럴
4.한계상태의 정의
    4.1 부재성능 및 손상 범위
    4.2 층간변위
5. 지반운동
6. 지진취약도 함수
    6.1 증분동적해석
    6.2 지진취약도함수
    6.3 대수표준편차의 보정
7. 포항지진 피해 추정을 통한 검증
8. 결 론
REFERENCES

• 안숙진(인천대학교 일반대학원 건축학과) | Ahn Sook-Jin (Department of Architecture, Incheon National University)
• 박지훈(인천대학교 도시건축학부) | Park Ji-Hun (Division of Architecture and Urban Design, Incheon National University) Corresponding author