A new constitutive model is introduced which is formulated in the framework of classical theory of plasticity. In the model the total strains are calculated using a stress-dependent stiffness, different for both virgin loading and un-/reloading. The plastic strains are calculated by introducing a multi-surface yield criterion. Hardening is assumed to be isotropic depending on both the plastic s...

Soil characterization plays a key role in the construction of various civil engineering infrastructures. For purpose developing geotechnical design model, it is essential first to describe behavior natural soil masses before proceeding calculation structure. The use numerical modeling for solving soil-structure interaction problems crucial prerequisite; these can be solved properly just by meas...

Several processes allow the improvement of soils such as vibrocompaction, stony columns, static horizontal compaction etc. These reduce risk liquefaction potential and making it possible to build on this type soil when space restriction require it. Stone columns are a recognized method improvement, which consists creating large diameter using special vibrators with granular filling materials in...