On the Axial Behavior of Drilled Foundations
Publication: GeoSupport 2004: Drilled Shafts, Micropiling, Deep Mixing, Remedial Methods, and Specialty Foundation Systems
Abstract
Four representative types of drilled foundations (drilled shafts, augered cast-in-place piles, pressure-injected footings, and micropiles) are examined from the standpoint of axial capacity evaluation, generalized behavior, and normalized load-displacement response. As shown, the capacities can be computed rationally, taking into account the particular characteristics of each foundation type, and the results agree well with the interpreted failure load from field load tests. The interpreted failure load also is linked consistently and simply to the elastic limit and the conventional slope tangent methods for interpreting compression and uplift load test results. The displacements also exhibit consistent patterns of behavior in compression and uplift, at both the interpreted failure load and elastic limit. These results will be useful for better understanding axial foundation behavior over a range of drilled foundation types.
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© 2004 American Society of Civil Engineers.
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Published online: Apr 26, 2012
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