Pile's Elastic Modulus Influence on Share Load Ratio Between Piles and Soil of Combination-Pile Composite Foundation

Regarding the combination-pile composite foundation made up of flexibility piles and nature soil as the substitute soil among rigid piles and considering cushion effect at the same time, it deduced share load ratio and settlement resolution of combination-pile composite foundation. Then the effect of pile’s modulus on the share load ratio is analyzed. It is indicated that the share load of long-pile is raised when the elastic modulus of long-pile enlarged, while the share load of cushion and short-pile decreased, but the influence to share load ratio diminished when the elastic modulus of long-pile was greater than 28000MPa. The pattern of the short-pile and the soil foundation are contrary to the long-pile in the same conditions.