Study on the Influence of Diaphragm Wall on the Behavior of Pile Raft Foundation

The paper focus on analyzing the influence of diaphragm wall on the bending moment and settlement of pile raft foundation. A case study in Ho Chi Minh City using pileraft foundation was used for studying process. The Finite element method (FEM) with the Hardening Soil model (HS) were employed to describe the behavior of soils. Behavior of pile-raft foundation was investigated by considering the available of diaphragm wall and the connection between diaphragm wall and raft. The results showed that the settlements of pile-raft foundation were decreased 12-20% and the moments of the raft were increased 17-20% when considering the influence of diaphragm wall. The connection between diaphragm wall and raft did not effect on the settlement and moment in middle area of pile-raft foundation.