Drained and Undrained Creep Characteristics of Loose Saturated Sand
Drained and Undrained Creep Characteristics of Loose Saturated Sand
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松散饱和砂的排水和不排水蠕变特性
DOI：
10.1061/40785(164)29
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
J. Yamamuro
中科院分区：
文献类型：
--
作者：
T. Kiyota;F. Tatsuoka;J. Yamamuro
从一般应力条件下的屈服和粘性特性出发，比较和解释了饱和松散细砂排水和不排水的蠕变特性。通过进行专门设计的三轴压缩（TC）和拉伸（TE）试验来评估粘性特性。为了量化p '- q平面上剪切和压缩屈服机制的屈服轨迹，施加了由预剪切和预各向同性压缩组成的各种载荷历史。基于双屈服概念解释了排水和不排水持续加载过程中蠕变应变的不同发展速率，通过双屈服概念将屈服土解释为两种类型的屈服（剪切和压缩），同时参考非线性三分量流变模型中制定的粘性特性。
Drained and undrained creep characteristics of saturated loose fine sand were compared and interpreted based on the yielding and viscous properties under general stress conditions. The viscous properties were evaluated by performing specially designed triaxial compression (TC) and extension (TE) tests. To quantify the yield loci for shear and compression yielding mechanisms on the p '- q plane, various loading histories consisting of pre-shearing and pre-isotropic compression were applied. Different developing rates of creep strain during drained and undrained sustained loading were interpreted based on the double yielding concept, by which the yielding soil is explained by two types of yielding (shear and compression), while referring to the viscous properties formulated in a non-linear three-component rheology model.