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(1) Website Cookies Utilized by ITASCA DENVERĪ cookie is a small text file in alphanumeric format deposited on the This policy applies to the site (hereinafter the "Site"). " A practical 3D bounding surface plastic sand model for geotechnical earthquake engineering application," Geotechnical Earthquake Engineering and Soil Dynamics (GEESD) Congress V, June 10-13, 2018, Austin, Texas, United States. More Informationįor more details about Itasca's new liquefaction model, P2P-Sand, please see the following paper:Ĭheng, Zhao (2018). Itasca's new liquefaction constitutive model was used for Dr = 50% and 65%. FLAC3D dynamic simulation of a wharf composed of structural elements resting on a slope subjected to shaking. The following engineering and laboratory scale simulations using the new liquefaction model are performing very well and behaving as expected. Model results compare very well with Empirical Kσ curves (Boulanger and Idriss, 2004) for a range of overburden vertical effective stresses. Undrained cyclic DSS simulations for initial relative densities of 25%, 45%, 65%, and 80%. Models are well behaved given damping ratios from constant mean pressure drained triaxial simulations for sands with and Dr = 35%, 55%, and 75% and Po = 50 kPa, 300 kPa, and 1500 kPa. Model results fall within a reasonable range of G/Gmax ratios from constant mean pressure drained triaxial simulations for sands with and Dr = 35%, 55%, and 75%. Values of CRR predicted by the model and compare very well to semi-empirical curve (left) as do curves of CSR versus number of cycles in undrained DSS cyclic simulations (right).