非饱和黄土结构性参数与其强度指标关系初探

在非饱和黄土结构性前期研究成果的基础上，初步探索了结构性参数与强度指标之间的联系规律以及如何利用结构性参数求取土体不同结构状态下的强度指标等问题。分析表明，结构性参数与强度指标之间存在良好的内在联系；所定义的非饱和黄土结构性参数比与土结构性的影响因素之间关系密切；通过反映土结构性各因素综合影响的定量指标——综合结构状态量，结合原状黄土天然含水率下的强度指标，可以在较大范围求出给定结构状态下非饱和黄土的强度指标。

Regularity of relation between structural parameter and strength indexes of unsaturated loess

Based on authors’ previous research achievements of structural characteristics of unsaturated loess, the regularity of relation between structural parameter and strength indexes is explored; and the question how to use structural parameter to ascertain the strength indexes of soils under different structural states is discussed too. The research indicates that the structural parameter is a corking criterion to confirm the strength indexes of soils and further expresses the internal contact with both; and there also has a very consanguineous relation between the ratio of structural parameter of unsaturated loess and influence factors of structural characteristics of soils; using the quantitative index which reflects the synthetical effect of different factors on structural characteristics of soils, named value of synthetical structural state, and considering the strength indexes of intact loess under natural water content, the strength indexes of unsaturated loess under discretional structural state can be calculated.