Residual-state creep behavior of typical clayey soils
Residual-state creep behavior of typical clayey soils
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DOI：
10.1007/s11069-013-0799-3
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发表时间：
2013-12-01
期刊：
影响因子：
3.7
通讯作者：
Yatabe, R.
中科院分区：
文献类型：
--
作者：
Bhat, Deepak R.;Bhandary, N. P.;Yatabe, R.
很少有研究人员利用三轴压力室和固结仪研究粘性土的蠕变位移特性，但在大多数情况下，他们都集中在峰值前的剪切状态。滑坡产生的粘性土假定已经达到残馀状态，因此有必要对其残余强度进行研究，以了解滑坡粘性土的蠕变变形特性。本文对现有的扭环剪切仪进行了改进，以了解典型粘性土的蠕变位移特性。新开发的蠕变试验仪能够测量在恒定蠕变应力作用下相对于时间的位移。本文主要研究了典型粘性土的残余蠕变特性。提出了蠕变破坏的剩余状态预测曲线，可用于预测未来蠕滑型滑坡的破坏时间和位移。
Few researchers have studied the creeping displacement behavior of clayey soils using a triaxial compression cell and oedometer; however, in most cases, they have concentrated on the pre-peak state of shear. Clayey soil from a landslide is assumed to have already reached the residual-state, necessitating a study on residual strength to understand the creeping displacement behavior of clayey soils from landslides. In this work, an existing torsional ring shear apparatus was modified to understand the creeping displacement behaviors of typical clayey soil. The newly developed creep test apparatus is capable of measuring the displacement with respect to time under the application of a constant creep stress. This paper focuses mainly on residual-state creep behaviors of typical clayey soils. Residual-state creep failure prediction curves are also proposed, which may be used to predict failure time and displacement of creeping landslides in the future.