The behavior analysis of driven single pile due to the alteration of pile parameter material value on the bearing capacity and settlement

Based on the empirical equation, the calculation of the bearing capacity of the pile foundation is influenced by the characteristics of the soil indicated by the cone resistance and friction (CPT) and the SPT value. However, determining the bearing capacity is also influenced by the material parameters of the foundation used. Based on SK SNI T-15-1991-03 [1] and ACI 363-92 [2], the determination of the concrete elasticity modulus is influenced by density, concrete compressive strength, and the correction factor. The value of this parameter can affect the bearing capacity and the settlement. Based on this, this study analyzes the behavior of driven single concrete piles at a diameter of 400 mm on the downward and uplift bearing capacity and the settlement with the variation of concrete compressive strength. This parameter can affect the elasticity modulus and the density of the material. The analysis was carried out using the Allpile program and empirical equation. The pile was reviewed at depth of 8 meters on clay soil. The results show that the downward bearing capacity is not affected by the weight, density, concrete compressive strength, and elasticity modulus (pile parameter material). Meanwhile, the result of the uplift bearing capacity is influenced by the alteration in the weight and density which affect the compressive strength and elasticity modulus. The value of the elasticity modulus affects the settlement of the foundation. The relationship that results in a corresponding point between weight, settlement, and uplift bearing capacity occurs approximately at 2.78 kN/m, 0.032 cm, and 94.6 kN.