细粒土的压实特性与土体物理性质的关系研究

Research of the Relationship Between Compaction Property and Physical Properties Index of Fine-grained Soils

首先介绍了当前有关细粒土压实特性研究的最新成果—全压实曲线及方程,分析了方程参数对压实曲线形状的影响,并对方程式的正确性进行了验证;探讨了压实曲线形状与土体物理性质的关系,并建立起了土体物理性质指标与全压实曲线方程参数之间的量化关系,这样我们便可通过对土体物理性质指标的量测,直接确定土体的全压实曲线方程参数及方程,从而为确定土体击实最大干密度和对应的最佳含水量提供了一种简便方法。

This paper firstly gives an introduction of the complete compaction curve and its equation-the latest research results at present about the compaction property for fine-grained soils, and analysises the influence of the equation parameters on the shape of compaction curve, then identifies the accuracy of the equation. After discussing the relationship between the shape of the compaction curve and the soil physical properties, we build up the quantitative relationship between physical properties index of fine-grained soils and parameters of complete compaction curve equation. Therefore, based on the measurement of physical properties index of soils, the parameters of complete compaction curve equation and this equation are directly obtained. Thus, a simple method is provided to obtain the optimization water content and the maximum dry density.