Research State-of-the-art and Analysis of CM three-dimension composite foundations;

" CM three dimensional high-strength compound foundation soil can reduce the construction cost by applying the bearing capacity of natural soil.

Through an actual project,the application of CM compound foundation soil is introduced in the foundation of tall building,which supplies a method for the treatment of foundation soil of the old building to be reformed.

The paper explains the design concept of CM pile composite foundation, introduces computation method for bearing capacity of CM pile and its practical application.