土体液塑限联合测定法及界限含水率相关性分析  

Correlation Analysis of Soil Boundary Moisture Content Based on Liquid Plastic Limit Joint Measurement Method

作　　者：高明亮 杨义辉 GAO Ming-liang;YANG Yi-hui(Beijing Jiutongqu Testing Technology Co.Ltd.,Beijing 100071,China;Chongqing Vocational College ofPublic Transportation,Chongqing 402247,China)

机构地区：[1]北京九通衢检测技术股份有限公司,北京100071 [2]重庆公共运输职业学院,重庆402247

出　　处：《工程建设与设计》2023年第17期55-58,共4页Construction & Design for Engineering

摘　　要：运用液塑限联合测定法对选取的20组土样进行天然含水率、液限、塑限测定,为进一步研究上述土体界限含水率的关系,运用一次函数和二次函数进行拟合。为验证拟合的精度,将其中实测的10组土样天然含水率作为自变量,液限、塑限作为因变量进行模拟计算,并将结果与实测液限、塑限进行对比。对比结果的误差平均值和标准偏差表明,天然含水率与液限、天然含水率与塑限的一次函数拟合在精度和离散程度上均优于二次函数拟合,液限与塑限也呈现一定的正相关性。The natural water content,liquid limit and plastic limit of20 groups of soil samples were measured by the combined determination method ofliquid and plastic limit.In order to further study the relationship between the above soil boundary water content,linear function and quadratic function were used to fit.To verify the accuracy ofthe fitting,the natural moisture content of 10 groups of soil samples measured were used as independent variables,and the liquid limit and plastic limit were used as dependent variables for simulation calculations.The results were compared with the measured liquid limit and plastic limit.The error mean value and standard deviation of the comparison results show that the linear function function ftting of natural water content and liquid limit,and natural water content and plastic limit are better than the quadratic function ftting in accuracy and dispersion,and the liquid limit and plastic limit also show a certain positive correlation.

关 键 词：天然含水率 液限 塑限 函数 

分 类 号：TU43[建筑科学—岩土工程]