Consolidation deformation characteristics and numerical simulation validation of soft clay

The soft clay exists widely in the coastal areas of China,and its physical property is very complicated.Through the laboratory test based on the site sampling,we studied the mechanical properties of soft clay and carried out a numerical simulation by selecting proper parameters,simulating the consolidation deformation and evolution law of soft clay in the model test,explaining some special phenomena appeared in the test,and drew some significant conclusions.In the course of the consolidation deformation,due to the special mechanical property of ultra-soft clay,the clay body becomes denser and denser accompanying the seepage,and it becomes more and more difficult to seep when it turns denser,which appears a different consolidation characteristics comparing with other soils.Thus,we shall consider the law that the seepage coefficient varies with the change of the void ratio and the non-linear mechanical property of the clay.