![]() Hydro-mechanical coupling analysis is conducted to evaluate the rainfall water infiltration influence combined with slope stability analysis using limit equilibrium method. This is achieved by a novel numerical modelling approach using the commercial software Geo-studio to investigate the performance of strip foundation located on the top of the unsaturated expansive soil slope subjected to various rainfall infiltration conditions. In the current study, a rational approach is proposed considering the combined influence of the foundation-slope behavior based on the principles of unsaturated soil mechanics. ![]() Rainfall infiltration is one of the major factors that contributes to the slope and infrastructure foundations failures on hilly slopes with unsaturated expansive soils. ![]() There are many infrastructures on unsaturated expansive slopes, especially in semi-arid and arid regions. ![]() * Corresponding author: the last two decades, there has been a significant increase in infrastructure development on slopes of hilly regions of the world, due to population growth. Department of Civil Engineering, University of Ottawa, Ottawa, Ontario, Canada
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