合肥地铁更新统黏性土液限与塑性状态关系分析

在合肥地铁工程勘察过程中，发现部分样品标贯判定的塑性状态与室内试验的结果不一致，对综合判定土体塑性状态存在一定的干扰作用。针对更新统黏土“原位标贯击数高、液性指数偏大”的特点，分析了液性指数偏大的原因，初步确定了液限对液性指数的影响关系，综合判定了更新统黏性土的塑性状态。

Analysis on Relationship between Liquid Limit and Plastic State of Pleistocene Clay along Hefei Metro

In the period of engineering surveys for Hefei Metro, discrepancies were found between the plastic state of some specimen determined from standard penetration test and that from indoor test, which made certain interference in defining soil plasticity comprehensively. In relation to the characteristics of the Pleistocene clay, i.e. it is of high SPT blow count and relatively large liquidity index, the reasons hereof was analyzed, through which the effects of the liquid limit on the liquidity index were determined initially and the plastic state of Pleistocene clay was defined comprehensively.