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  • 1
    Language: Korean
    In: 韓國地盤工學會論文集 = Journal of the Korean geotechnical society, 2002, Vol.18(6), pp.25-32
    Description: 전통적인 흙의 입도분포 곡선상에서 흙의 구성 성분에 따른 프랙탈 차원의 변화에 대해서 Wu등(1993)과Bittelli 등(1999)의 연구결과를 중심으로 Buchan 등(1993)의 실험결과를 이용하여 고찰하였다. 자료분석시에는 실트와 모래의 경계값의 변화에 따른 프랙탈 차원의 변화를 알아보기 위하여 20$\mu{m}$, 63$\mu{m}$ 그리고 125$\mu{m}$에 대한 프랙탈 차원을 산정하여 전체 범위에서 구한 프랙탈 차원과 비교하였다. 분석결과에서는 전통적인 입도분포곡선상에서 프랙탈 차원의 산정은 가능한 것으로 나타났으며, 실트와 모래성분의 경계값은 Wu 등(1993)이 제시한 것 보다 Bittelli 등(1999)이 제시한 경계값이 더 적절함을 알 수 있었다. 또한 Bittelli 등(1999)이 제시한 실험식을 이용해서 실트영역의 프랙탈 차원을 비교적 정확하게 산정할 수 있었다. The fractal dimension that was evaluated with soil components from the traditional particle-size distribution(PSD) curve was analyzed using the results of Wu et al.(1993) and Bittelli et al.(1999). In order to find the change of the variation of fractal dimension with the upper and lower limit, three limit values(200$\mu{m}$, 63$\mu{m}$, and 125$\mu{m}$) were chosen, and these results of fractal dimension analysis were compared to the result that was evaluated in the whole range of the soils. The results showed that it is possible to evaluate fractal dimension from the traditional PSD curve with the soil contents, and it showed that Bittelli et at.(1999)'s upper and lower limit value was more reasonable than Wu et al.(1993). Equations that were presented by Bittelli et at.(1999) also showed a good agreement with the analytical results in the silt domain.
    Keywords: Fractal Dimension ; Upper And Lower Cut-Off Value ; Particle-Size Distribution ; Soil Contents ; Self-Similarity
    ISSN: 1225-9632
    Source: KISTI (Korea Science Collection)
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