Abstract:For the limitation of the present design method of rigid pile composite foundation,a new design method in which both the force balance and the deformation coordination are considered,is put forward. Based on the load share on the piles and soil of rigid pile composite foundation,the design method can consider the factors of pile stiffness,soil stiffness,and sand cushion thickness,etc.. When the method is applied to several projects in Guangdong Province,no significant differences are found between rigid composite foundation and pile foundation in settlement. It is proven that the proposed design method is reasonable and feasible.