Abstract
Frankie pile is classified as a large displacement pile cast in place with a concrete mixture. This paper dealt with the laboratory work to produce a model of the Franki pile similar to the full-scale production process in the field to investigate its behaviour and make a comparison study with the other familiar types of piles models (precast concrete pile, closed-ended steel pipe pile, and bored pile with the same surface and cross-sectional area). The investigation occurred within dry sandy soil with two different relative densities (30 and 60) % will be denoted as (S1) and (S2) respectively. Axial compressive piles load tests were performed for embedded piles models in sandy soils at relative densities of 30% and 60%. Several interpretations have been used to estimate the ultimate capacity of pile models from the results of pile load tests. It was found that the Davisson, De Beer, Fuller and Hoy, and Tangent Methods gives an approximate acceptable result for all typical pile load tests, so average values of theses methods were adopted for comparisons. It was observed that the ultimate bearing load value at a Franki pile was greater than the other types of piles models in both densities. The for precast concrete pile, 2.98 for close ended pipe pile and 5.5 for bored piles for low relative density. While for high relative density the bearing ratio of Franki pile over other pile models were 0.94 for precast concrete pile, 2.26 for pipe pile model and 3.16 for bored pile model. During this study, it was found that a Franki pile was more effective in weak granular soils.
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More From: IOP Conference Series: Materials Science and Engineering
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