In the figure, ft, EIuncracked, and

In the figure, ft, EIuncracked, and EIfullcracked denote the tensile strength of concrete, the flexural stiffness of the uncracked concrete section, and the flexural stiffness of the fully cracked concrete section, respectively.The value of ft is taken to be The pile cap is assumed 0.6Ïfcu.to be elastic and is characterized by Young’s modulus, Ecap,and Poisson’s ratio n. The Young’s modulus of the pile cap is taken to be the same as that of the reinforced concrete pile,and the n value is taken to be 0.2. The piles are assumed to be structurally fixed into the pile cap, and the pile head might have noticeable rotation under high loads.