湖沼相土K_0值与微结构参数的关联性分析  

The Analysis of the Relevancy Between K0 with the Microcosmic Feature Parameter About the Limnetic Facies Sedimentary Soil

作　　者：谢雪宁[1,2] 赵瑞斌[1,2] 张彦[1,2] 

机构地区：[1]天津城市建设学院土木工程系,天津300384 [2]天津市软土特性与工程环境重点实验室,天津300384

出　　处：《岩土工程技术》2011年第3期128-132,共5页Geotechnical Engineering Technique

摘　　要：土的静止侧压力系数K_0是实际工程中经常需要用到的重要数据,影响土的静止土压力系数的主要因素就是土本身的性质。静止土压力系数是土的工程性质的一个重要指标,土的工程性质与土的微观结构联系紧密,土的许多工程性质可以从土的微观角度进行解释。通过研究静止侧压力系数K_0与土的微观参数之间的关系,得出静止侧压力系数K_0与微观参数中的等效直径、数量、形态比关联不大,而与圆度比较相关。Still-lateral-pressure--coefficient K0 is a important coefficient in practical engineering. The main effect of the Still-lateral-pressure-coefficient is the properties of soil itself, and K0 is a important engineering properties of the soil. It is tightness between the engineering properties and the microstructure of the soft. So we could explain lots of the soil＇s engineer- ing properties through the microcosmic view. The research about the concern between the still-lateral-pressure-coefficient and microcosmic feature parameter explains that the parameters are not all relevant with K0. The relevancy of K0 with Roundness is big, while with Equiv Diam, AspectRatio and Count is small.

关 键 词：静止侧压力系数 化学成分 力学指标 微结构特征参数 线性拟合 

分 类 号：TU411.92[建筑科学—岩土工程]