Loading Criterion and Calculation Model of Soil Elasto plasticity Theory

This paper, adopting the Concept of divitional yield of plastic strain components, proposes a loading criterion of divitional yield, which is suitable for incremental numerical method. In reference to non-linear deformation theory, a new calculation model of soil elasto-plasticity is proposed. This paper makes a theoretical study. Based on the theory, calculation results and their analysis will be published later.