Abstract
The author denoted the formula of elasto-plastic consolidation analysis and the method for analysis using a finite element, and expressed the equations which could explain both the elastic consolidation settlement and plastic failure. And by the development of a concrete computer program and its execution, the author clarified the characteristics of two-dimensional consolidation problems in the plane strain condition. Especially, it became clear that depending on the difference of the load's increasing rate, the failure load of the ground, the dissipation of the pore water pressure and the increase in stress tended to vary remarkably, and this fact was thought to be important in the practical execution of works.