Research On CFG Pile Composite Foundation Of The Treatment Of High Way Soft Soil

This article discussed about CFG pile composite foundation. In which, we systematically talked about the mechanism of structural system,the reinforce mechanism,the loading capacity and the deformation calculation between several styles CFG pile composite foundations. Based on formers fruiters, we focused on the design method, the construction technology,quality control and economic comparison. After that , we got some conclusion which is beneficial to the spread of the CFG pile composite foundation . All we have done and got is:1,We discussed the applicability,the good point and the weakness of several calculation method of the loading capacity and the deformation .And we also discussed the reason of deviation of available Method. We put forward a method which was suitable to CFG pile composite foundation, we tested and verified this method by a case.2,We discussed the cushion mechanism in detail on the Terzaghi theory . The analysis formula about the optimal distance pile to pile, the reasonable thickness of cushion, the stress ratio pile-soil and the practical displacement ratio are put forward .3,This thesis studied the common work mechanism of the "pile-geonet-soil", with the help of the arching-tensioned membrane theory.4,By the theory of palate we deduced the settlement of Pile-Net Composite Foundation.5,When we design the structure of the CFG pile composite foundations, there must be five parameters need we to define. They interact each other , so we need to select and calculate correctly. Applied method can work out by control the deformation.