الفهرس 
PREDICTION OF THE MECHANICAL BEHAVIOR OF HARD SOILS- SOFT ROCKS USING NUMERICAL MODELLING TOOLS
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Abstract
A hard soil-soft rock (HSSR) with an intermediate behavior and properties between hard soils and rocks show complex behaviors. Predicting the response of these materials requires using a mechanical model that can capture the main features of their behaviors. So, two different mechanical models ranging from simple elastic-perfectly plastic Mohr-Coulomb (M-C) to a more complicated strain hardening Double Yield (DY) model are used.The results of these two models are compared to declare the effect of the constitutive mechanical model on the ground behavior