摘要
对基于流体力学方法的砂土液化后研究方法(包括试验、解析和数值分析方法)进行了综述,并通过对表观黏度与剪应变率关系的分析,得出了液化砂土是一种剪切稀化非牛顿流体的结论,同时指出了砂土液化后研究方法存在的问题:(a)对液化砂土的定性仍不明了,需通过大量的试验来确定液化砂土的非牛顿类型;(b)试验中将液化后砂土假设为牛顿流体,这与液化后砂土的非牛顿特性相矛盾.
A review was made on sand post-liquefaction research methods based on fluid mechanics, including laboratory tests, theoretical analysis and numerical simulation. According to the test data, the relationship between the apparent viscosity and the shear strain rate was analyzed. It is concluded that the liquefied sand is a shear-thinning non-Newtonian fluid, and the existing problems in the research are put forward as follows： the type of the liquefied sand is not clear, and great deal of experiments should be performed to determine the non-Newtonian fluid type of liquefied sand; the liquefied sand is assumed as Newtonian fluid in the test, and the assumption is in conflict with the non-Newtonian characteristics of liquefied sand.
出处
《河海大学学报（自然科学版）》
CAS
CSCD
北大核心
2007年第4期418-421,共4页
Journal of Hohai University(Natural Sciences)
关键词
砂土液化
剪切稀化非牛顿流体
研究方法
sand liquefaction
shear-thinning non-Newtonian fluid
research method
