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The procedure in which the response of the soil influences the motion of the structure and the movement of the structure influences the response of the soil is termed as soil-structure interaction (SSI).
Conventional structural design methods overlook the SSI effects.
Neglecting SSI is rational for light structures in relatively stiff soil such as low rise buildings and simple rigid retaining walls.
The effect of SSI, however, becomes prominent for heavy structures resting on comparatively soft soils for example nuclear power plants, high-rise buildings and elevated-highways on soft soil.
SOIL STRUCTURE INTERACTION
The
majority of the civil engineering structures involve a few type of structural
element with direct contact with ground. When the exterior forces, such as
earthquakes, proceed on these systems, neither the structural displacements nor
the ground displacements, are independent of each other.
The procedure in which the response of the soil influences the motion of the structure and the movement of the structure influences the response of the soil is termed as soil-structure interaction (SSI).
Conventional structural design methods overlook the SSI effects.
The effect of SSI, however, becomes prominent for heavy structures resting on comparatively soft soils for example nuclear power plants, high-rise buildings and elevated-highways on soft soil.
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