This paper examines the effect of soil replacement on dynamic response of foundations using combined Finite Element (FEM) and Direct Boundary Element (DBEM) analysis. The analysis is based on the coupling of the two methods (FDBEM) to exploit the better features of both. The dynamic response of both strip and circular rigid footings under different harmonic loads is studied for surface footings. A parametric study of the response is conducted for a half-space including soil replacement underneath the footing. The main parameters considered are the replaced soil dimensions and properties. Graphs showing the variations of flexibility of rigid foundations with various parameters are presented. It is seen that soil replacement substantially reduces the response of the footing in the low frequency range. For higher frequencies the trend is not monotonic although there is a decrease in the response in most cases also.
|Publication status||Published - Dec 1 1992|
|Event||Proceedings of the 45th Canadian Geotechnical Conference - Toronto, Ont, Can|
Duration: Oct 26 1992 → Oct 28 1992
|Other||Proceedings of the 45th Canadian Geotechnical Conference|
|City||Toronto, Ont, Can|
|Period||10/26/92 → 10/28/92|
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