Sensitivity Analysis Of Parameters In Shoal Consolidation For Surcharge Incorporating Vacuum Preloading Method

This paper mostly studied how to advance and accelerate the consolidation of soft clay in shoal using surcharge incorporating vacuum preloading method. Then the sensitivity of parameters in engineering were analyzed by use of a finite element software named ABAQUS.At first, when we explore the land resources in shoal, many problems are presented, such as how to advance and accelerate the consolidation of soft clay. Surcharge incorporating vacuum preloading method is a good method to reinforce soft foundation. This method has been used to improve the shoal soil. This matter is very significant and important. The construction technology of surcharge incorporating vacuum preloading was also studied. The basis of the finite element analysis, Biot's Consolidation Theory, was presented in detail. In analysis, Mohr-Coulomb constitutive model was used.Secondly, on the basis of elasto-plastic model proposed in the paper, the consolidation analysis of soft clay in shoal was reliability and reasonable. Then the sensitivity of parameters in engineering were analyzed. According to the analysis, consolidation and lateral displacement were transformed in rule with the change of parameters. Linked with the construction technology, this paper proposed various methods to accelerate the settlement of consolidation and reduce the effect of surcharge to environment around. This could be useful and helpful to engineering design and construction.