摘要
Abstract
In order to improve the insufficient bearing capacity of CFG piles,this paper takes a construction project in Sinan County,Guizhou province as an example to test the ultimate bearing capacity and integrity of CFG single piles and composite foundations of houses,reveal the failure reasons of CFG single piles and composite foundations,and put forward corresponding treatment measures.Practice has proved that the practice shows that CFG piles are class I piles,and the integrity of the pile body is good.The load-settlement curve showed a slow increase at first and then a rapid increase.When the level is small,the sedimentation volume increases slowly.With the increase of the load level,the settlement began to increase rapidly.The rise of groundwater level causes the increase of saturation and cohesion of surrounding soil,which re-duces the bearing performance of CFG pile foundation.Based on various factors,the bearing capacity of CFG composite foundation is greatly improved by using the technology of secondary pile filling+increasing area replacement rate.关键词
CFG单桩/地下水/竖向承载力/沉降量Key words
CFG single pile/Ground water/Vertical bearing capacity/Settling capacity分类
建筑与水利
