CAJ | 학술논문

饱和粉土场地在强地震作用下易发生液化现象。开展饱和粉土的循环三轴试验，以循环加载的累积耗损能量为指标，探讨黏粒含量、密实度、有效围压和循环应力比等因素对粉土液化特性的影响，试验结果表明：粉土液化所需的耗损能量随黏粒含量的增加呈先减小后增大的趋势，当黏粒含量约为8%时粉土的液化耗损能量最低；液化耗损能量随粉土密实程度的增大而逐渐增加，并随初始有效围压的增长而增加，但粉土的液化耗损能量与循环应力比之间的关系不明显。
포화분토장지재강지진작용하역발생액화현상。개전포화분토적순배삼축시험，이순배가재적루적모손능량위지표，탐토점립함량、밀실도、유효위압화순배응력비등인소대분토액화특성적영향，시험결과표명：분토액화소수적모손능량수점립함량적증가정선감소후증대적추세，당점립함량약위8%시분토적액화모손능량최저；액화모손능량수분토밀실정도적증대이축점증가，병수초시유효위압적증장이증가，단분토적액화모손능량여순배응력비지간적관계불명현。
Liquefaction of saturated silty soil can easily occur during strong earthquakes.To inves-tigate the liquefaction of a saturated silt mixture,a series of cyclic triaxial tests is conducted.Some factors such as clay particle content,relative density,effective confining stress,and cyclic stress ratio are examined by analyzing the cumulative dissipated energy for triggering liquefaction.The results show that for low (high)values of clay particle content,an increase in clay particle content with the same relative density leads to a decrease (increase)in cumulative dissipated energy.The effective confining pressure and relative density have strong effects on the cumulative dissipated energy.However,the cumulative dissipated energy is independent of the cyclic stress ratio for the specimens with constant relative density and confining pressure.