الفهرس 
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Abstract
In recent years, much research work have been directed to the analysis of soil-foundation interaction problems. In fact a realistic safe and economic design can only be obtained if the actual contact pressure between the foundation and the supporting soil is known.
The term contact stresses, usually, indicates the normal stresses at the surface of contact between the foundation and the supporting soil. The traction stresses along the surface of contact are generally taken to be of secondary importance and its consideration would greatly complicate an already complex problem.
The total magnitude of the contact stresses is equal to the total load transmitted by the structure, but its exact
distribution is highly indeterminate. In the analysis of interaction problems, certain simplifying assumptions concerning the properties and the behavior of the soil-foundation system,
are usually resorted to. Winkler subgrade model, which considers the soil as a group of an infinite number of independent elastic springs, and the elastic half space model, are well-known examples of the applied assumptions.
The main purpose of this thesis is to investigate the effect of consolidation process of the subsurface clayey soil on