The enhancement of the carrying capacity of the single pile can be achieved by improving the roughness of the pile shaft and/or enlarging the tip of the pile.This paper presents the results of a laboratory experiment of a modeled steel pipe pile with and without the enlargement of the pile base.The pile base was made separately from the pile shaft and was inserted using jacking pressures into an artificial and homogenous soft clay soils.The soil media used is classified as high plasticity clayey-silt is compacted in the concrete container with 600 mm in diameter and 1000 mm in depth.This study shows that the technique of pile tip enlargement works properly,and the carrying capacity of the pile is higher than a pile without base enlargement by increasing of up to ± 270%.
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