EFFECT OF SHALLOW BURIAL ON LOAD-DISPLACEMENT-TIME RESPONSE OF SQUARE FOOTINGS IN CLAY UNDER IMPULSIVE LOADING
ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS
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The advent of nuclear weapons has resulted in the need for shallow- buried protective structures capable of surviving ground shock and associated loadings induced by high-intensity nuclear airblasts. The design of such structures requires a knowledge of the behavior of their foundations under rapidly applied transient loads. The purpose of this investigation was to determine if nondimensional relations developed previously by the application of similitude theory and dimensional analysis for dynamically loaded surface footings on clay also hold for dynamically loaded footings at shallow depth of burial and to determine the effect of shallow burial on the footing response. The results of the investigation showed that the nondimensional relations developed for surface footings on clay also hold for footings at shallow depth of burial. The effect of shallow burial on the response of dynamically loaded footings in clay is small and can be considered negligible for design purposes.
- Structural Engineering and Building Technology