Back-analysis of Elastoplastic Model of Soil

Compared with elastic model, elastoplastic model of soil conforms to practice better. In this paper, Mohr-Coulomb and Drucker-Prager criterion are employed in the back analysis for elastoplastic model in geotechnical engineering. This paper back-analyzes elastic module and Poisson's ratio and makes a comparison of the result of the back-analysis for these two criterions. In conclusion,Mohr-Coulomb criterion is better than Drucker-Prager criterion.