논문 상세보기
This study aims to present a method to evaluate the relative risk of failure due to liquefaction of domestic small to medium-sized earthfill dams with a height of less than 15 m, which has little information on geotechnical properties. Based on the results of previous researches, a series of methods and procedures for estimating the probability of dam failure due to liquefaction, which calculates the probability of liquefaction occurrence of the dam body, the amount of settlement at the dam crest according to the estimation of the residual strength of the dam after liquefaction, the overtopping depth determined from the amount of settlement at the dam crest, and the probability of failure of the dam due to overtopping was explicitly presented. To this end, representative properties essential for estimating the probability of failure due to the liquefaction of small to medium-sized earthfill dams were presented. Since it is almost impossible to directly determine these representative properties for each of the target dams because it is almost impossible to obtain geotechnical property information, they were estimated and determined from the results of field and laboratory tests conducted on existing small to medium-sized earthfill dams in previous researches. The method and procedure presented in this study were applied to 12 earthfill dams on a trial basis, and the liquefaction failure probability was calculated. The analysis of the calculation results confirmed that the representative properties were reasonable and that the overall evaluation procedure and method were effective.
1. 서 론
2. 중소규모 흙댐의 액상화 파괴확률 산정 방법과절차
2.1 댐 제체 액상화 발생확률 산정
2.2 제체 액상화로 인한 댐 정상부 침하량 산정
2.3 댐 정상부 침하량과 월류심도를 고려한 흙댐 액상화 파괴확률 산정 방법
2.4 흙댐 액상화 파괴확률 산정을 위한 데이터 입력 방안 및 산정절차
3. 액상화 파괴확률 산정에 필요한 중소규모 흙댐의대표물성 선정
3.1 제체 표준관입시험값
3.2 제체 액상화평가를 위한 액상화 세립분함유율
3.3 댐 제체를 통한 가속도의 증폭 특성
4. 중소규모 흙댐의 상대적 액상화 파괴위험도 시범평가 및 분석
5. 결 론
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