Study on Characteristic of CFG Pile Composite Foundation

This article simply explains distribution character of pile friction and settlement model of CFG pile composite ground.The calculation method of settlement and the formulas of pile-soil stress ratio hold that the underlying layer of soil is winkle foundation and the interaction of pile-soil is deduced.And factors that influence the stress ratio are studied.The influence factors considered include the pile length,pile spacing,soil modulus,etc.The calculated results indicate that the stress ratio under vertical loads increases with the increase of the pile length,and decreases with the increase of the soil modulus and pile spacing.At last the rationality of the formulas deduced in this paper are validated combining with an example.