BEARING CAPACITY OF FOOTINGS ON PILE-STABILIZED SLOPES

10.22099/ijstc.2013.1616

Abstract

The present paper reveals the results of an analytical method to calculate the bearing
capacity of a footing supported on one or two rows of piles stabilizing slope. The varied
parameters here include pile diameter, pile length, location of pile rows, location of footing
relative to the slope crest, foundation width, center to center spacing of piles in a row, and fixity of
the pile head. Passive pile resistance is determined based on normal and shear resistance of the soil
surrounding the pile considering plastic deformation of soil between piles. The Pile resistance
obtained through the present method is compared with other analytical as well as 3D numerical
ones. The results indicate acceptable agreement. The footing bearing capacity is calculated
according to both the limit equilibrium slope stability analysis and soil stability beneath the
footing. The predicted results were compared with those reported from other experiments and
indicated an acceptable agreement with increasing pile spacing. The results indicate that stabilizing
the earth slope with rows of piles has a significant effect on the footing of bearing capacity
improvement.

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