A New Proposed Type of Open-Ended Pipe Pile (Open-Ended Pipe Pile with Tapered Tip Pile (OE-TTP))

The present study investigates the behavior of the plug on pile load capacity for new proposed open-ended pile has a new modification in comparison with the traditional one, this modification performed by making the pile tip tapered with special dimensions. The open end has a diameter equal to half of the pile diameter while the length of the tapered part is equal to the pile diameter. The efficiency of the proposed type studied by modeling and manufacturing the two piles types (40mm diameter) and investigating the behavior of these piles. Complete setup manufactured for installing and loading the piles in a constant rate of penetration. Two lengths to diameter ratios considered in this study (L/D=15 and L/D=20). The model piles tested in loose dry sand. The soil plugging phenomenon and the Incremental Filing Ratio IFR were studied. The obtained results show that the proposed type has higher bearing capacity of (28%-36%) than the traditional type. This increase attributed to the tapered end of the pile that continues to push and compacting the soil below it during its driving into the soil.