INSPECTION ANALYSIS OF CONSOLIDATION SETTELEMENT AND LATERAL DISPLACEMENT FOR 5 KINDS OF GROUND IMPROVEMENT EXAMPLE BY ELASTO-VISCOPLASTIC CONSTITUTIVE MODEL

Abstract

 When developing harbor facilities and artificial reclamation island in soft clayey ground, finite element analysis using an elasto-viscoplastic constitutive model is generally used. However, the predictive precision of the finite element analysis is rarely inspected, and the knowledge about its reliability and validity of the soil parameter set is still lacking. It's often pointed out that the predicted value of lateral displacement is more excessive than the actual measurement and that the transformation state by the analysis is different from actual phenomenon. From the background like this, the authors proposed the elasto-viscoplastic constitutive model, which it was aimed for to improve predictive precision of the lateral displacement. In this paper, we apply this model for five construction examples adopting the different ground improvement method and show the precision inspection of the predicted value of vertical and lateral displacement. As a result of inspection, we show that predictive precision of the lateral displacement improved than a conventional model.