Three types of four-parameter strength criterion based on new mechanical model are proposed.
在新的力学模型上建立了三种类型的四参数强度准则。
The general criterion of potential mechanical system is then presented.
然后提出力学系统有势的一般判据。
Mechanical model for pile-driving is presented according to the soil deformation behavior and yielding criterion of structural soft soils.
根据结构性土体的变形特征和屈服准则，建立打桩力学模型。
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