한국농공학회논문집 (Journal of The Korean Society of Agricultural Engineers)

  • 제48권4호
  • /
  • Pages.67-74
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  • 2006
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  • 1738-3692(pISSN)
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  • 2093-7709(eISSN)
한국농공학회 (The Korean Society of Agricultural Engineers)
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정적하중 상태에서 포화된 실트질 모래의 액상화 거동

Liquefaction Behaviour of Saturated Silty Sand Under Monotonic Loading Conditions

  • 이달원 (충남대학교 농업생명과학대학 지역환경토목전공)
  • 발행 : 2006.07.01
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초록

This study was carried out to investigate the liquefaction behaviour of saturated silty sand under monotonic loading conditions. The undrained soil tests were conducted using a modified triaxial cell and specimens were prepared using the moisture tamping method. Undrained triaxial compression tests were performed at different confining pressures, void ratios and overconsolidation ratios and the samples were sheared to axial strains of about 20% to obtain monotonic loading conditions. It is shown that increasing confining pressures, void ratios and overconsoildation ratios increases the deviator stress, but it has no effect on increasing the dilatant tendencies. It is shown that complete static liquefaction was observed regardless of increases in the confining pressure, void ratio and overconsolidation ratio. Therefore, the confining pressure, void ratio and overconsoildation ratio does not provide significant effects on the liquefaction resistance of the silty sand. The presence of fines in the soil was shown to greatly increase the potential for static liquefaction and creates a particle structure with high compressibility for all cases.

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참고문헌

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