Dynamics of Frame Foundations Interacting With Soil

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Abstract
The dynamic response of structures such as frame foundations for vibrating machinery is calculated. The interactions between a single structure and soil as well as the interaction through the underlying soil between two adjacent structures are taken into account. Mixed boundary value problems describing the interaction between viscoelastic soil and rigid bases of arbitrary shape are solved by superposition of analytical halfspace solutions. The influence of shear stresses at the interface between soil and base is bounded by the assumptions of perfectly smooth and perfectly welded contact. The response of the entire system is evaluated by coupling soil and founded structures by means of a substructure method.

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