RIA: An Experimental Investigation of Multi-Dimensional Creep Behavior of Soft Soils

9309566福克斯本研究的目的是开发一个多维蠕变模型的基础上确定的实验室试验的软土。 将在固结计、三轴、简单剪切和立方体（真三轴）剪切条件下对无机粘土和纤维泥炭进行实验室蠕变试验。 从实验程序的数据将进行分析，以确定在多轴蠕变位移过程中的有效应力，应变和应变率张量之间的非线性数学关系。 所发展的理论将考虑土壤的横向各向同性，轴向，横向和剪切应变率之间的耦合效应和蠕变率的依赖于中间主应力。 泥炭的实验数据将与使用新开发的有机土壤离散元模型的数值模拟进行比较。 ***

9309566 Fox The objective of this research is to develop a multi-dimensional creep model for soft soils based on definitive laboratory experiments. Laboratory creep tests will be performed on an inorganic clay and a fibrous peat under oedometer, triaxial, simple shear and cuboidal (true triaxial) shear conditions. Data from the experimental program will be analyzed to determine the nonlinear mathematical relationship between effective stress, strain and strain rate tensors during multiaxial creep displacement. The developed theory will account for soil cross isotropy, coupled effects between axial, lateral and shear strain rates and the dependence of creep rate on intermediate principal stress. Experimental data for the peat will be compared with numerical simulations using a newly developed discrete element model for organic soils. ***