PLAXIS LIQUEFACTION MODEL UBC3D-PLM - Knowledge Base

Chapter 2Validation of the UBC3D invarious stress paths2.1 Validation of the reformulated UBC3D-PLMin monotonic loadingIn this section the validation of the UBC3D-PLM under monotonic loadingis presented. The numerical modelling of a monotonic triaxial compression(TxC) and a monotonic simple shear test (DSS) are shown and comparedwith experimental data, as well as with the original UBCSAND as publishedby Beaty and Byrne (1998).The parameters used in the tests are extracted from a drained triaxialtest. The plastic anisotropic factor is used to modify the plastic shear modulusused in UBC3D-PLM in PLAXIS as proposed by Puebla et al. (1997).The parameters are summarized in Table 2.1.φ p ( ◦ ) φ c ( ◦ ) KB e KG e Kp G (T xC) Kp G (DSS) R f F33.7 33 300 300 310 98.3 0.95 0.317Table 2.1: Model parameters used to simulate undrained behaviour of looseSyncrude sand (Puebla et al., 1997). The stiffness parameters determinedin reference stress level of 100 kPa and are unitless. me=ne=0.5, np=0.67.23