Mechanism And Settlement Analysis Of Rigid Pile Composite Ground

Composite foundation could take full advantage of the pile-soil interaction, and better to enhance the carrying casacity of the foundation, it has good economic returns when the quality of the project under the premise and been widely used in our project construction.Currently subsidence control-oriented design concests have become increasingly prominent. The rigid siles which in the composite foundation have high strength, can effectively transfer loads to deeser soils, while effectively reduce the reinforced zone's settlement and the total settlement amount of the foundation .For this reason ,the asslication of rigid pile composite foundation is greatly increasing. But there is a large gas between the theoretical research of the rigid sile comsosite foundation and engineering practice, in particular, its mechanism and calculation of settlement deformation remains to be further studied.In this paper, I will take the rigid pile composite foundation with a cushion as a research object. Brief descristion of the the co-ordination mechanism of cushion , material selection and cushion thickness; analysis of rigid pile composite foundation pile - soil interaction of the load transfer mechanism; elaborated of the total settlement source of rigid pile composite foundation, whereby the establishment of an effective model for calculating the settlement; Based on the model, to obtain the total settlement by taking rigid pile and soil as reference object ,and using Mindlin solution to solve the settlement of sublayer. At last, the thesiss analyzes the stress level at the pile top,pile shaft ,pile tip, foundation bed and pile-soil stress ratio by the software of abaques in the rigid pile composite foundation.