Based on researching the load test of the cement flyash gravel(CFG) pile composite foundation

the bearing capacity and deformation characteristics of CFG piles are analyzed. And through the medium of the earth stress cells buried above the cushion and below the cushion

tested stress characteristic of CFG piles and the soil stress between piles are obtained. According to these measurements

the vertical stress of the CFG pile is about 16 times bigger than the earth stress between pile when the working load is 210 kPa. Along with the increment of working load

the sharing load of the pile increases fast

but the sharing load of the soil between piles increases slowly.