Numerical Modeling for Behavioral Analysis of Expansive Soil under Shallow Foundations

Document Type : Original Research


1 Department of Civil Engineering, Islamic Azad University of Malekan, Malekan, Iran

2 Department of Civil Engineering, Maragheh University of Technology, Maragheh, Iran



This study focuses on the potential for inflation and damage resulting from the construction of buildings and shallow foundations on expansive soils. As it is known, the geotechnical properties of expansive soils are controlled by the two main parameters of moisture absorption and soil’s clay particles which is mainly occurred in fine-grained soils. When expansive soils absorb water and swells. This swelling causes extensive damage and rupture to surface/shallow foundations. Studying on soil swelling behavior of the expansive soils on shallow foundations can be considered as most important aspect of problematic soil’s investigations. In this regard, the finite element numerical modeling by Plaxis software has been included in this article. The model is prepared based on shallow loading on expansive soil and evaluate the deformations. Numerical results indicate the failure status under foundation with respect to the behavioral displacement on soil.