A New Elasto-Plastic Critical State Model RU+MCC for Overconsolidated Soil

Abstract:

The paper presents a reasonably advanced constitutive law for soil – a hybrid of the Modified Cam Clay and a new RU development. The Modified Cam Clay model is an isotropic hardening elasto – plastic model originated by Burland in 1967 [1] within the critical state soil mechanics. This model describes realistically mechanical soil behaviour in normal consolidation states. The other one is designed to ensure more adequate soil responses to reloading paths, particularly in the range of small strains. The RU+MCC model has been implemented in the FEM computer code Z_SOIL.pc. To test the influence of the small strain nonlinearity on soil – structure interaction as well as to exhibit the ability of the proposed model to simulate realistically this effect, a comparative study based on the FEM solution has been carried out. As a benchmark a trial loading test of strip footing was used.

• Periodical: Applied Mechanics and Materials (Volume 837)
• Pages: 68-74
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.837.68
• Online since: June 2016
• Authors: Rafal Uliniarz*
• Keywords: Constitutive Model, Critical State, FEM Analysis, Modified Cam-Clay, Settlement, Small Strain, Soil, Soil Parameters, Strip Footing

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