7009 Soil mechanics

Nature and composition of soil. Physical properties of soils. Grain size distribution. Atterberg limits. Relationships among physical properties. Description and classification of soil. Classification systems. Principe of effective stresses. In situ stress state. Effect of ground water flow in effective stress. Determination of parameters of mechanical behavior of soils. Mohr circle. Shear strength parameters. Unconfined compression test. Direct shear test under drained and undrained conditions. Triaxial test. 1D consolidation test. Stresses in a soil mass. Stress state due to external loads. Influence depth of external loads. Superposition principle. Saint-Venant principle. Ground water flow through soil. Soil strains. Stress – strain relationships. Constitutive laws: linear isotropic elasticity, nonlinear stress – strain relations. Stress paths. Theory of 1D compression (consolidation). 2D and 3D consolidation. Failure criteria. Shear strength. Mechanical behavior under drained and undrained loading conditions. Methods of Geological Mapping & Tectonic Analysis 7268 ▪ Cartography and Topographic Maps. Geometric Relations between Topographic Relief and Geological Surfaces. Remote Sensing – Interpretation of Aerial Photographs. Identification of Geological Formations and Geological Contacts: principles and Morphotectonic Characteristics. Chronology of the Geological Events. Complex Structures. Isopach Maps. ▪ Tectonic Structures, Folds – Faults: Geometric, Kinematic and Dynamic Characteristics. Tectonic Stresses and Deformations. Stereographic Projections. ▪ Interpretation of Geological maps and construction of Geological Cross Sections. ▪ Maps of R
ECTS : 4
Language : el
Learning Outcomes : Upon successful completion of the course, the student will be able to: • Distinguish soils into two main categories (sands and clays), according to their physical characteristics and mechanical properties. • Understand the mechanical behavior and response of soils in the context of designing and constructing technical projects and recognize the appropriate data for performing geotechnical tests. • Understand and distinguish concepts such as shear strength – compressibility, effective – total stresses, cohesive (fine-grained) – non-cohesive (coarse-grained) soils, undrained – drained loading conditions, immediate settlements – consolidation settlements. • Calculate stresses and pore pressures in the soil, both due to self-weight and due to applied loads. • Understand basic concepts of flow and permeability in soils.