Inversion on Physic-mechanical Parameters for Weak Sandwich of Giant Building Foundation

The physical and mechanical parameters E,μ,c,φ for weak sandwich of giant building foundation are inverted based on a great dam. The elastic-plastic loading process to store water for weak sandwich between a dam and its bedrock is reasonably simulated through establishing objective function. It may be better proved that E,μ,c,φ obtained by inversion can or can't be used in a project according to optimization of penalty function and composite deformation method.