Buckling Capacity of Concrete Piles in Sand
Senior Lecturer, Department of Civil Engineering,
Graduate Student, Department of Civil Engineering,
Professor, Department. of Civil Engineering,
Experimental investigation on the buckling behaviour of concrete piles, 40mm·50mm and 2200mm high, partially embedded in dry sand subjected to axial loads and eccentric loads have been carried out in a sand box of size 600mm·600mm·1500mm. Concrete piles having unembedded length to embedded length ratios of lu/l=0.40, 0.50 and 0.55, were subjected to axial loads. An eccentricity to least section size ratios of e/D=0.5, 1.0 and 1.5, with constant embedment length of 1200mm, were used under eccentric loads. Dry river sand of specific gravity 2.62, uniformity coefficient 1.4, emax= 0.68, emin= 0.47 has been used as foundation medium. Based on the experimental results, the influence of unembedded length and eccentricity have been investigated on the variation of load-deflection along the entire length for each increment of load up to failure, ultimate load and critical load of slender concrete pile. Salient conclusions are reported from the study.
Keywords: Partially Embedded Pile, Concrete Pile, Axial loads, Eccentric loads, Ultimate load, Critical load, Sand.
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