适用于冻土的广义非线性强度准则

冻土与融土的主要区别是冰，温度变化影响着孔隙冰含量，进而影响着冻土的物理力学性质．广义非线性强度准则用一个表达式描述了材料在“平面及子午面上的非线性强度特性，其在主应力空间的π平面上的破坏函数为介于SMP准则和Mises准则之间的光滑曲线，子午面上的破坏函数为幂函数曲线．在该准则的框架下，通过国内学者已取得的冻土材料的...

Applications of Generalized Non-Linear Strength Theory to Frozen Soil

The main difference between frozen soil and thawed soil is ice;temperature can affect the frozen soil physical and mechanical properties by controlling its ice content.Generalized non-linear strength theory uses an expression to describe material nonlinear strength properties in π plane and radial plane.Its failure curve in the π plane of principal stress space is a smooth curve between failure curves of SMP theory and Mises theory.It describes the failure curve in the radial plane as the form of power function.The frozen soil strength properties in radial plane can be researched under the theory.It was proved that the generalized non-linear strength theory is suitable for frozen soil by the frozen soil’s triaxial test results,which domestic scholars have achieved.It is found that each parameter in the theory changes with temperature.