In this study, seismic fragility analysis are carried out for the water supply facilities. To consider the uncertainty of ground characteristics, the variability of soil in several cases is considered based on RSM and the winkler Foundation method is adopted to model the ground. Limit state of water supply facilities defined as two steps.: the collapse prevention level and the serviceability level. As an input ground motion for evaluating seismic fragilities, foreign surveyed real earthquakes and artificial earthquakes which can be generated in the Korean peninsula are used. The destruction ability according to peak ground acceleration of an earthquake for the water supply facility is evaluated in this paper. From the analysis results, the probability of failure of the ductile iron pipe and wrapped steel pipe under real earthquakes have shown as upper than the Korean artificial earthquakes. It could evaluate the damage of water supply facilities to an earthquake and could be applied as basic data for seismic design of water supply facilities.

1. 서 론
 2. 상수도 시설물 지진해석
  2.1 상수도 시설물 현황과 해석 케이스
  2.2 지반 모델링
  2.3 입력지진
 3. 지진 취약도
  3.1 지진취약도 분석
  3.2 지진 취약도 곡선
 4. 결 론
 REFERENCES

• 이득복(서울시립대학교 토목공학과 박사수료) | Lee Deuk-Bok Corresponding author
• 이창수(서울시립대학교 토목공학과 교수) | Lee Chang-Soo Corresponding author