Consideration of the effect of embedment depth and lateral backfilling of machine foundations on the dynamic properties of their beds

Abstract

1. Recommendations are given for consideration of the effect of embedment and lateral backfilling in determining the stiffness and damping coefficients of the beds of foundations concreted under pressure against the soil, or in forms with the condition that backfilling be carefully performed. 2. A method is proposed for the calculation of the horizontal-rotary oscillations of embedded machine foundations; this method makes it possible to use computational equations familiar for nonembedded foundations with varied initial data. 3. The developed computational methods are confirmed experimentally, indicating their applicability. The proposed method is most reliable for a set of predicted parameters of the horizontal-rotary and vertical oscillations of embedded foundations. 4. The developed computational methods are being incorporated in a reference manual on the design of machine foundations with dynamic loads, which is being prepared for publication.