摘要
本文用常规三轴仪,对粗粒土在饱和状态下进行了k_0固结试验,等应力比固结试验,以及等压固结下不同应力路径的剪切试验。试验结果表明,对于试验所用粗粒土,其静止侧压力系数k_0并不是常数,而是随应力的变化而变化。试验结果还表明,在相同固结条件下,试样沿不同应力路径剪切,不仅其峰值强度不同,而且其应力应变曲线特性,抗剪强度指标c、φ不同。
Using saturated coarse grained soil, the K_0 consolidation, constant stress ratio pathes consolidations, and various shear stress pathes have been tested in convential triaxial apparatus. The results show that K_0 varies with the stress for tested soil. The results also show that not only the peak strength but also the stress strain behavior, the friction angle φ and cohesion c varies with the shear stress pathes.
基金
自然科学基金
关键词
粗粒土
应力应变
K0固结
应力路径
coarse grained soil, stress and strain, k_0-consolidation, stress path
