Studies On Settlement Of GC And CFG Composite Foundation Under Embankment Load

Firstly,this paper do some theoretical research of the settlement of CFG pile and gravepile composite foundation; secondly this paper combined with the model test and numericalsimulation analysis the settlement of CFG pile and grave pile composite foundation underembankment load. The content involves the settlement calculation method of CFG pile andgrave pile composite foundation and its reliability; the factors what affect the settlement ofCFG pile and grave pile composite foundation under embankment load; the Settlementsimulation of this compound pile of CFG pile and grave pile foundation settlement modelunder embankment load. This paper aimed to find some conclusion that has theoretical valueand practical guiding significance.This paper summarizes the research and application status of the combined pilecomposite foundation at home and abroad in detail, and introduces the settlements calculationmethod and relevant theory of CFG pile and grave pile composite foundation.This paper through the model test of the CFG pile and grave pile composite foundation,analysis the influencing factors of the subsidence, this part do the Soil test, and analysis thedate of whether use the GC pile, change the pile spacing、pile diameter and pile length。Theresults show that early stage of composite foundation’s Elastic deformation is very big, twiceas much as the late deformation. The effect of composite foundation for reduce the settlementof soft soil is obvious, compared with treated foundation, untreated Foundation’s Settlement isabout many times larger.The last parts of this paper through the analysis software do some research to findsettlement numerical simulation of CFG pile and grave pile composite foundation underembankment load, analysis cushion, pile length, replacement ratio, modulus of embankment,embankment width and modulus of pile on the deformation control effect.