PLAXIS LIQUEFACTION MODEL UBC3D-PLM - Knowledge Base
PLAXIS LIQUEFACTION MODEL UBC3D-PLM - Knowledge Base
PLAXIS LIQUEFACTION MODEL UBC3D-PLM - Knowledge Base
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Chapter 3Validation of the<strong>UBC3D</strong>-<strong>PLM</strong> in a finiteelement scheme3.1 Modelling of a dynamic centrifugeIn this chapter the validation of the <strong>UBC3D</strong>-<strong>PLM</strong> in a finite element schemeusing <strong>PLAXIS</strong> 2D is presented. A dynamic centrifuge is modelled. Theparameters for the numerical model as well as the experimental results forthe comparison are reported by Byrne et al. (2004).The main objective in this numerical calculation is to test the abilityof the proposed model to capture the onset of liquefaction and judge theaccuracy of the results in terms of the evolution of excess pore pressuresduring dynamic loading. The predicted soil behaviour is compared withmeasurements taken during the physical modelling.A systematization of the centrifuge test is presented in Figure 3.1. Themagnitude of the acceleration applied to the centrifuge equals 120 g (g is thegravitational acceleration) in order to scale the stresses during the physicalmodelling. The input motion for the dynamic loading is 50 cycles of applied33