Research On The Mechanism Of Improvement In Cement-Soil Mixing Pile Composite Foundation

On the base of achievements on cement-soil pile , a further study is conducted on the mechanism of cement-soil pile treated soft clay foundation , the characteristic of load transfer and the deformation is also explored.Through a lot of domestic and foreign experimental achievement , the paper sums up select methods and correlations of various physical and mechanical index of soil-and-cement . After detailed analysic and comparison , it points out the differences between load transfer behavior of grouped piles and that of singled pile . It also analyzes the characteristics of pile-soil's stress in soil-cement mixing pile composite foundation . By calculation , it concludes that the settlement rules of soil-cement mixing pile composite are influenced by the change of pile's length,displacement and pile's strength .It puts forward the detailed design procedure of soil-cement mixing pile composite foundation and analyzes the settlement calculation methods , As a result , a useful and simple method of settlement calculation for cement mixing pile composite foundation is suggested , which provides references for the design of soil-cement pile composite foundation . Finally , its practical application is proved by taking an engineering project as an example .