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NTIS 바로가기韓國地盤工學會論文集 = Journal of the Korean geotechnical society, v.35 no.12, 2019년, pp.45 - 58
조성은 (한경대학교 토목안전환경공학과)
In this study, a stochastic analysis procedure based on numerical analysis was proposed to evaluate a kind of intensity-duration rainfall threshold for the initiation of slope failure due to rainfall infiltration. Fragility curves were generated as a function of rainfall intensity-duration from the ...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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취약도 곡선은 무엇인가? | Kennedy et al.(1980)은 지진 공학에서 취약도 곡선을 원자력 발전소 구성 요소의 파괴 빈도와 지진 시 최대지반 가속도 사이의 확률적 관계로 정의했다. 보다 일반적으로, 취약도 곡선은 시설물 또는 구성 요소가 환경적인 자극을 나타내는 지표의 함수로 정의되는 한계상태에 도달하거나 초과할 확률을 표현하는 관계로 정의될 수 있다(Porter, 2018). | |
강우에 의한 사면파괴가 발생하는 원인은 무엇인가? | 강우의 침투에 의하여 지하수위가 상승하거나 임시 지하수위가 발생하며, 사면표면에 침식이 발생하고 함수비는 증가하여 흙의 단위중량이 증가하게 된다. 함수비증가로 인한 지반의 전단력 증가와 전단강도의 감소는 강우에 의한 사면파괴를 유발한다(Cho, 2014). | |
물리적 기반의 방법으로 결정된 사면 파괴 유발 강우기준의 한계는 무엇인가? | 물리적 강우기준은 사면파괴를 유발하는 강우강도와 지속시간을 결정하기 위하여 보통 침투해석과 사면 안정해석을 결합한다. 이들 물리적 강우기준(e.g., Pradeland Raad, 1993; Fourie et al., 1999; Cho and Lee, 2002;Cho, 2009)은 경험적 강우기준에 비해, 강우의 침투로 인한 이론적인 사면파괴 과정을 반영하는 장점이 있지만 사면 파괴 발생과 관련한 다양한 불확실성을 고려하지는 못한다. |
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