关于不同液限测定方法的相关性浅析

Brief Analysis on Correlation of Different Liquid Limit Determination Methods

摘要:

液、塑限测定是室内土工常规试验项目，其试验参数是划分细粒土类别及评价其工程性质的重要指标。其中，液限的测定方法多样，且不同规范的测定标准略有差异研究选取60个上海地区0～30 m深度的淤泥质土、黏土、粉质黏土土样进行76g-10 mm和76g-17 mm液限试验，利用Excel建立两种液限试验相关性的一元二次回归模型，建立大致相当的统计关系。

关键词:液、塑限试验;一元二次回归模型;相关性分析

Abstract:

Liquid limit and plastic limit determinations are the routine laboratory geotechnical test items. The test parameters are the important indicators to classify the fine grained soils and to evaluate the engineering properties, in which the determination methods of liquid limit are various, and the determination standards of different specifications are slightly different. 60 specimens of mucky soil, clay and silty clay at a depth of 0~30 m are selected from the areas of Shanghai for the 76g-10 mm and 76g-17 mm liquid limit tests. A unary quadratic regression model of the correlation between two liquid limit tests is established by using Excel to set up the roughly equivalent statistical relationships.

Key words:liquid limit and plastic limit test, unary quadratic regression model, correlation analysis