In order to determine fragility curves, the limit state of piers for each damage level is suggested in this paper based on the previous test results in Korea, including our test results. In previous studies, the quantitative measures for damage levels of piers have been represented by curvature ductility, lateral drift ratio, or displacement ductility. These measures are transformed to lateral drift ratios of piers for consistency, and the transformed values are compared and verified with our push-over test results for flexural RC piers with a circular cross-section. The test specimens are categorized concerning the number of lap-splices in the plastic hinge region and whether seismic design codes are satisfied or not. Based on the collected test results in Korea, including ours, the lateral drift ratio for each pier damage level is suggested.

A B S T R A C T
1. 서 론
2. 손상수준별 횡변위비(Drift ratio)
3. 원형 휨교각 실험체의 손상수준별 횡변위비
    3.1 실험체 분류
    3.2 항복변위, 극한변위 및 손상수준 정의
    3.3 실험체 제원 및 실험방법
    3.4 내진상세 실험체
    3.5 비내진상세 실험체
4. 국내 원형 휨교각 실험결과를 종합한 손상수준별 횡변위비
5. 결 론
감사의 글
REFERENCES

• 남현웅(국민대학교 건설시스템공학부 박사과정) | Nam Hyeonung (Ph.D Student, Department of Civil Engineering, Kookmin University)
• 홍기증(국민대학교 건설시스템공학부 정교수) | Hong Kee-Jeung (Professor, Department of Civil Engineering, Kookmin University) Corresponding author
• 김익현(울산대학교 건설환경공학부 정교수) | Kim Ick-Hyun (Professor, Department of Civil Engineering, Ulsan University)