Comparison review between behavior of connected and disconnected pile raft foundation.

The connected piled raft (CPR) and disconnected pile raft (DCPR) foundation design concepts presented by several researchers are reviewed and detailed in this paper. The main aim of the current study is to explore the feasibility of utilizing a disconnected piled raft by comparing its behavior with that related to the connected piled raft. For this purpose, a review study was performed on the connected and disconnected piled raft. A connected piled raft foundation (CPR) was discovered to reduce differential and total settlement by strategically placing piles beneath the raft. Disconnected pile raft foundation (DCPR) as the foundation has been introduced, and piles are instead of structural members, soil reinforcement was considered. Granular material can be used to fill the gap between the piles and the raft, distributing stresses under the raft and reducing stress concentration at the pile heads. DPR is similar to CPR in terms of favorable conditions. However, DPR has been found to be a more effective foundation system (depending on different conditions). It is also concluded that DCPR is efficient in reducing the differential settlement. The stiffness and the thickness of the interposed cushion layer govern the amount of differential settlement. [ABSTRACT FROM AUTHOR]