| dc.description.abstract | The foundation is a critical structural component that supports and
transmits loads to the underlying soil. In the construction of the
Apartment Building in Yogyakarta, the existing foundation type is a bored
pile with a 0.6 m diameter and 12 m depth. This study re-plans the
foundation using bored piles to analyze the impact of diameter variations
on bearing capacity and settlement. The analysis involves three diameter
variations—0.45 m, 0.5 m, and 0.6 m—while maintaining a pile depth of
12 m. Standard Penetration Test (SPT) data is used for calculations.
Using the Poulos & Davis method, the group pile bearing capacities for
diameters of 0.45 m, 0.5 m, and 0.6 m are 3.214,506 kN, 4.033,615 kN,
dan 4.803,383 kN, respectively. Meanwhile, the Meyerhof method yields
bearing capacities of 3,588.638 kN, 4,286.948 kN, and 4,533.659 kN.
Results indicate that larger diameters increase bearing capacity.
Settlement analysis shows values of 1.397 cm, 1.246 cm, and 0.547 cm for
diameters of 0.45 m, 0.5 m, and 0.6 m, respectively, using both methods.
Compared to the initial design, the bearing capacity for a 0.45 m diameter
decreases by 2%–12,2%, while diameters of 0.5 m and 0.6 m show
increases of 17.1%–31,2%. Settlement increases range from 0%–155%
but remain within permissible limits. The findings highlight the significant
influence of diameter on both the bearing capacity and settlement of
bored pile foundations. | en_US |
