International Journal of Civil & Structural Engineering
Author(s) : BUDIJANTO WIDJAJA, SHIENNY LILIANTO
The foundation is the lowest component of a structure and determines the robustness of a building. The bearing capacity of a pile is the main aspect that determines the strength of a foundation. Therefore, the bearing capacity must be carefully analyzed to avoid failure of the building. The actual bearing capacity is usually obtained using static axial loading test. This research aims to determine the ultimate bearing capacity of a bored pile with a diameter of 1,200 mm and a length of 50 m by using the reaction pile and Osterberg Cell systems. This research also compares the results with those of conventional method, field interpretation, and computer software (i.e., Plaxis and RS Pile). For the reaction pile system,the pile capacity difference between the Davisson (2,110 tons) and the Reese and Wright methods is 1.9% and that of RS Pile is 8.7%. By contrast, for the O-Cell system, the pile capacity difference between the Chin (3,620 tons) and the Reese and Wright methods is 7.9%. Results show that the pile capacity of the O-Cell system is approximately twice that of the reaction pile system. This finding can be attributed to the differences in the soil conditions of the two bored piles and the load transfer mechanism of the loading test.