Vertical Vibration of Machine Foundations

by George C. Gazetas, (A.M.ASCE), Asst. Prof. of Civ. Engrg.; Case Western Reserve Univ., Cleveland, Ohio,
Jose M. Roesset, (M.ASCE), Prof. of Civ. Engrg.; The Univ. of Texas at Austin, Austin, Tex,

Serial Information: Journal of the Geotechnical Engineering Division, 1979, Vol. 105, Issue 12, Pg. 1435-1454

Document Type: Journal Paper


The paper presents the results of an analytical study of vertical vibrations of massive strip foundations excited by constant-force or rotating-mass type oscillators and placed on the surface of a linearly hysteretic soil layer on rock. A semianalytical method based on a direct solution of the wave equations in terms of displacements and accounting for the exact physical conditions at the rough layer interfaces and the soil surface is briefly presented. The results shown illustrate the importance of the layer depth, the rock compliance and the foundation mass on the dynamic vertical response of the foundation.

Subject Headings: Machine foundations | Foundations | Vertical loads | Vibration | Equipment and machinery | Soil analysis | Surface waves | Rocks

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