PARAMETER ANALYSIS OF PILE BEARING CAPACITY BASED ON LOADING TEST AND NUMERICAL METHODS

Abstract

Currently, numerical methods have been widely used to analyze the case of deep foundations, both determining the bearing capacity and settlement due to loads that occur on the foundation. This method has been used to obtain friction bearing capacity and end bearing capacity to obtain the adhesion factor in soft soil.

The purpose of this final project was to generate the respective values of the friction bearing and the end resistance of the pile cap on a loading test 200% of the design load through finite element simulation of FEM (Finite Element Method) using the Plaxis 2D program. This research began by collecting data from the N-SPT and CPT soil investigations, loading test data, and pile specification data. The soil investigation data were correlated into soil parameters (E, v’, c, dan φ) which were required by Mohr-Coloumb modeling on Plaxis 2D to produce end bearing and friction bearing capacities that were in accordance with the loading test results.

The results of the loading test 200% of the design load carried out on the pile of TP No.101, As.Q-5 resulted in a friction bearing capacity of 15 meters of piles is 95.98 tons, and an end bearing capacity is 4.08 tons. And then, the TP No.58F-2E pile resulted in a friction bearing capacity of 15 meters long piles is 91.96 tons, and an end bearing capacity is 8.04 tons. The results shows that at a load of 200% of the design load carried out on the piles it can still be well supported by the friction bearing capacity of the pile cap, so that the end bearing capacity still receives a much less load than the load received by the friction bearing capacity.

Keywords: bearing capacity, pile cap, loading test, numerical methods