Multiple Regression and ANN ( MLP) Model for Predicting Swelling index of Ramadi Cohesive Soil

Abstract

The response of expansive soils in the form of swelling and shrinkage due to changes in water content is frequently expressed as heaving and settling of lightly loaded structures such as roads, buildings, and canal linings. Compression and/or swelling indices are used for the calculation of the consolidation settlement of fine grained soils. They are conventionally determined by laboratory oedometer tests. Because of the time and expense involved in performing consolidation tests, it is often desirable to obtain approximate values of swelling index, Cs by using other soil properties which are more easily determined. A database consisting of 102 consolidation tests from different parts of Ramadi city were compiled, identified, and used to conduct and utilized a statistical study to estimate suitable relations to determine the swelling index. this study develops the artificial neural networks based multi-layer perceptron, ANN-MLP and multiple regression, MR models. Neural model offers significant improvements in prediction accuracy of the statistical models.