A State of Art Review on Constitutive Modeling of Soft Clays

Abstract

With the global necessity of develo** infrastructure with the concerns of land scarcity and hike in land costs, it has become an utmost need to look for construction alternatives on less feasible sites such as soft ground. Simultaneously there is an emerging need in geotechnical engineering to analyze the behaviour of soft clays in response to the forces acting on them. Abundant researches based on theoretical knowledge, analytical equations, experimental work and numerical studies have been done on constitutive models for soft soils to model their load-deformation behaviour. The models such as Mohr Coulomb, Modified Cam Clay, Soft Soil model and Hardening soil model are made applicable to be employed for finite element and finite discrete element analysis in order to perform the simulation study on soil-structure interaction problems subjected to varying static and dynamic forces. At times, difficulty arises in selecting the model which best suites the simulating conditions and gives the most critic desired results due to non-uniformity in the requirement of parameters computation between different models. This paper addresses to the review study of different researches performed and models prepared in this regard. Accordingly the overview of model’s main characteristic features, parameters involved in the widely accepted constitutive model is done. The capabilities and shortcomings of different models and research performed are summarized later in the paper.