新的多参数强度准则

在新的力学模型上建立了三种类型的四参数强度准则。这三个新的强度准则不仅适用于拉压强度不等的材料，并且适用于那些单轴压缩强度不等于双轴压缩强度的岩土类材料。这三个强度准则有一普遍意义：最大剪应力准则、莫尔－库仑准则、双剪应力单参数准则、两参数准则、三参数准则，还有近年来提出的一些准则都是这三个准则的特例。

The Multi-parameters Strength Criteria

Three types of four-parameter strength criterion based on new mechanical model are proposed.These criteria not only apply to the materials of unequal tensile strength,but also to the rock material that uniaxial compressive strength is not equal to biaxial compressive strength.The new criteria have a general significance:the maximum shearing stress criterion. the mohr-coulomb criterion,single-parameter criterion of twin shear stress,double-parameter ci- terion,three-parameter criterion,etc.are the special cases of these criteria.