自1975年海城地震,特别是1976年唐山地震以来,含有少量粘土颗粒(d<0.005毫米的细颗粒)的砂质和粉质土轻亚粘土的液化问题巳日益受到国内工程界的重视,研究轻亚粘土的液化应着重于两个方面:第一,液化特性,它与砂土液化之间有何异同之处,各种影响因素等;第二,建立可靠的现场判别方法。本文即这几年来我们对这方面研究的总结。 Since the Haicheng earthquake in 1975, especially since the Tangshan earthquake in 1976, the problem of liquefaction of sandy and silty soil light sub-clays containing small amounts of clay particles (d<0.005 mm fine particles) has received increasing attention from the domestic engineering community. The study of the liquefaction of light sub-clay should focus on two aspects: first, the liquefaction characteristics, its similarities and differences with sand liquefaction, various influencing factors, etc. Second, establish a reliable on-site identification method. This article is a summary of our research in this area over the past few years.