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设计了一种0K状态不同等应变或等应力速率连续对土样轴向加载的单轴固结试验方案,该试验方案可让土样同时经受不同荷重率、应力历时、应力路径、应力历程的作用。经过对重塑饱和黄土的单轴连续加荷、三轴连续加荷、分级加荷单轴固结试验研究,结果表明:若定义土在单轴压缩不同侧向约束条件下反应的侧压力为自适应应力;单轴侧限压缩试验主动施加的竖向压力与实测的侧向土压力之差为土的自适应剪应力,除了不受孔隙水压力的影响外,更重要的是,实测与分析结果证明,土的单轴侧限压缩应变量与自定义的自适应剪应力具有唯一的影响关系。
A kind of uniaxial consolidation experiment scheme of continuous axial loading of soil sample with different strain or equal stress rate at 0K state was designed. The experimental scheme can make the soil specimen withstand different loading rates, stress duration, stress path, stress history effect. After uniaxial continuous loading, triaxial continuous loading and graded-loading uniaxial consolidation experiment of saturated loess remodeling, the results show that if the lateral pressure of the soil subjected to different lateral restraints under uniaxial compression is defined as Adaptive stress; uniaxial lateral compression test initiative to apply the vertical pressure and the measured lateral soil pressure difference is the soil adaptive shear stress, in addition to not affected by the pore water pressure, more importantly, the measured and The analysis results show that the uniaxial compressive strain of soil has a unique relationship with the self-adaptive self-adaptive shear stress.