Numerical analysis of the settlement factor of the Multi-DJM-Pile composite foundation

By using the finite element method(FEM), the numerical emulation experiments are carried out on the settlement of the multi-DJM-pile composite foundation. The load thickness and modulus of the cushion , the ratio of the pile’s length and diameter and the spacing between piles are analyzed, and the rules of the settlement of the multi-DJM-pile composite foundation during the whole loading period are obtained. The settlement of the multi-DJM-pile composite foundation increase nonlinearly increment with the load increasing. The thicker the cushion, the large the settlement of the soil between piles, at the same time the thickness of the cushion should be controlled in about 300mm and its modulus should be limited strictly. The side resistance of pile plays a more important role and the settlement of the pile and the soil has the same tendency while the pile’s length. The increment of the spacing between piles results in the obviously nonlinear settlement of the soil between piles.