重塑黏土压缩变形参数研究

RESEARCH ON THE COMPRESSION DEFORMATION PARAMETERS OF RESHAPED CLAY

土体压缩变形参数是地基沉降计算的基础,可通过室内一维固结试验获得,由于试验过程耗时长,给出土体压缩变形参数与土体物理指标的经验关系具有重要工程意义。文中通过对6种重塑黏土开展一维压缩试验,测定土体的压缩变形指标,对它与土体的物理力学性质指标相关性进行分析。结果表明重塑黏土饱和状态下所能保持的最大含水率、液塑限与土体的压缩指数有良好的相关性,通过建立经验方程,可以根据土体物理力学指标较好地推算重塑黏土的压缩变形参数。

The compression deformation parameters of soil are the basis for calculating foundation settlement,which can be obtained through indoor one-dimensional consolidation tests.Considering the long testing process,providing an empirical relationship between the compression deformation parameters of soil and its physical indicators is of great engineering significance.By conducting one-dimensional compression tests on six types of remolded clay,the compression deformation index of the soil is determined,and its correlation with the physical and mechanical proper⁃ties of the soil is analyzed.The results show that there is a good correlation between the maximum water content,liq⁃uid plastic limit,and compression index of the soil that can be maintained under the saturated state of remolded clay.By establishing an empirical equation,the compression deformation parameters of remolded clay can be well calculated based on the physical and mechanical indicators of the soil.