Abstract
This study describes the process of analysis of a piled raft foundation for a high rise residential building (Burj al-Amir) on the Najaf Sea in Iraq. Piled raft foundation is a foundation used, in which the total load coming from the super structure is transferred to the soil by a load sharing mechanism between raft and pile. The present study attempts to do a three dimensional finite element analysis of piled raft foundation subjected to vertical load using PLAXIS program. Various tests are done to explore soil properties, also parametric study to find effect the piled raft dimensions include pile spacing, number of piles, pile diameters, pile lengths for pile groups, raft thickness and raft dimension ratio (L/B) on piled raft foundation behavior are considered.
It has been found that the maximum settlement of the piled rafts depends on the pile spacing and the number of piles..
The maximum bending moment in raft increases with increase raft thickness, decrease pile number and decrease in pile length. Maximum and differential settlement decreases with increase raft thickness and uniform increase in pile length.
In the scope of this study, the results of the parametric study are presented and design strategies for piled rafts are discussed
