Response of Circular Footings to Vertical Vibrations

Sung (5) used a half-space model to find the displacement of a footing resting on an elastic half-space for various interface pressure distributions, viz. rigid base, uniform and parabolic. From the available theoretical and experimental investigations (1,3,4) it can be concluded that the variation of contact pressure distribution should be considered while solving problems on dynamics of foundations. In this paper, analog solutions (2) are presented for the response of a circular footing resting on an elastic half-space with uniform and parabolic contact pressure distributions and subjected to frequency dependent and frequency independent excitations.