Prediction of Cyclic Behaviour of Quaternary Alluvial Soil using Finite Element Approach

This paper presents a numerical simulation to describe the stress-strain responses of sands under large strain cyclic loading using the finite element method. Initially a class C1 Prediction has been performed using two different fully-coupled effective stress constitutive modelling. The calibrated model has been validated further against the experimental data from displacement controlled cyclic triaxial tests for different alluvial soils. In the last part, a parametric study has been conducted to predict the cyclic behaviour and dynamic properties of sands available in the alluvial deposits for variation in site and motion characteristics. The study demonstrates that the proposed model can be used with caution by geotechnical engineer to predict the large strain cyclic behaviour of similar types of sand available worldwide in the alluvial deposits.