Application And Research Of CFG-short-pile Composite Foundation

With the theoretical and technologic development and the application of composite foundation, there are many varieties with the types of composite foundation, there are many varieties with the types of composite foundation, many new types of composite foundation have been put into design and construction.CFG-short- pile composite foundation makes full use of the bearing stratum of the foundation on the upper layers, provides the bearing capacity of composite foundation, and reduces the ground deformation. Just because of the using the short CFG pile, the construction process is more concise, the quality of the project is more easily guaranteed, it also saves the project cost, shorten the project period.In this paper, through the analysis of negative friction influence on CFG-short-pile composite foundation bearing capacity, we optimize the traditional formula for calculating the foundation bearing capacity. And Through the actual verification , we get a better conclusion.Through the application of the CFG- short-pile composite foundation technology in Beijing Beiyuan 401 #, 402 # Building, the CFG- short-pile composite foundation load-bearing characteristics and the law of settlement are presented. By comparing other composite foundations, CFG-short- pile composite foundation highlights obvious economic benefits and good prospects in the buildings of the geological conditions with good bearing stratum shallow existing in the shallow strata.