Liquefaction analysis of undrained cyclic tests by calibration of constitutive models

D. MANZANAL; M. GARCIA-GARCIA ; E. CARAVAJAL-DÍAZ

Cancun

Conferencia; XVI Pan-American Conference on Soil Mechanics and Geotechnical Engineering; 2019

Sociedad Mexicana de Mecánica de Suelos

Liquefaction analysis poses constitutive and numerical challenges. Thiswork presents a calibration of constitutive models capable of reproducingliquefaction: UBC3D, Hypoplastic for sand and PM4Sand. Simulation is done withthe Soil Test tool, implemented in the finite element program Plaxis, based on cyclicdirect simple shear tests on Fraser River Sand. Different vertical pressures and initialdensities are studied. All three models show pore pressure build-up and reachliquefaction state. In this text, some parameters are modified to accurately reproducethe experimental response. However, a unique set of parameters should be used fordifferent applied pressures and initial densities