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Triaxial Test Study on Soft Soil under Isotropic Consolidation and K0 Consolidation Conditions
Author(s): 
Pages: 546-551
Year: Issue:  5
Journal: Journal of Seismology

Keyword:  软土等向固结 K0固结 三轴试验 应力应变特性 邓肯模型;
Abstract: 对某软土重塑样分别进行等向固结和K0固结条件下的三轴试验,研究了不同固结条件、不同围压下软土的强度和应力应变特性,并对试验结果进行了分析和对比。结果表明:低围压下,等向固结三轴压缩试验和K0固结三轴压缩试验土样破坏时的主应力差差别不大,随着围压增大,K0固结条件下试验土体的主应力差要明显大于等向固结条件下的试验土体;与等向固结相比,K0固结条件下的土体粘聚力c值减小,而内摩擦角增大;土体呈现剪缩特性。运用等向固结三轴压缩试验确定的邓肯模型参数模拟K0固结条件下土体的试验曲线,吻合较好,初步验证了邓肯模型参数对K0固结土体的适用性。
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