重塑饱和黄土K_0固结三轴试验研究  

Experimental Study on K_0 Consolidation Tri-axial Test of Remolded Saturated Loess

作　　者：王大军[1] 崔海涛[1] 

机构地区：[1]长安大学,西安710064

出　　处：《路基工程》2017年第2期75-78,共4页Subgrade Engineering

摘　　要：采用GDS静三轴仪,进行了饱和重塑黄土的K_0固结试验研究,探讨了不同加载速率下试件的变形特性,并对试验结果进行对比和分析。结果表明:不同加载速率下,试件轴向应力与轴向应变的关系曲线变化趋势一致;不同加载速率条件下,当轴向应力达到同一值时,加载速率大的试件,其轴向应变越大;不同加载速率下,土样侧压力系数K_0与轴向应变的关系曲线趋势基本一致;加载速率不同,试件侧压力系数K_0的稳定值也不同,但仅在一定范围内变化。The experimental stu static tri-axial instrument, discu on Ko consolidation test of remolded saturated loess is carried out using GDS ng the deformation characteristics of the test pieces under different loading rates and comparing and analyzing the test results. The results show that under different loading rates, the variation trend of the relation curve between axial stress and strain of the test pieces is coincident. When the axial stress is up to the same value, the axial strain of the test pieces with larger loading rate is larger. The trend of relation curve between the lateral pressure coefficient Ko and axial strain of the soil samples is basically coincident. The stable value of the lateral pressure coefficient Ko of the test pieces is also different, however, it varies within a certain scope.

关 键 词：K0固结 加载速率 饱和重塑黄土 侧压力系数 孔隙水压力 

分 类 号：TU411.7[建筑科学—岩土工程]