Test Results Analysis of Bored Pile Post-grouting on Pile End in Soft Ground

Through the contrastive analyses of static load tests and pier body stress tests of before and post grouting of bored pile in Shanghai Hongqiao Hub projects,etc.,the influence of post-grouting on pile end for single pile bearing capacity is discussed in the paper.Furthermore,the function mechanism and respective influence degree of frictional resistance on pile side and resistance on pile end are analyzed deeply,and the result is tested by core detection on pile end.The result shows that the frictional resistance on pile side is improved by post-grouting on pile end and the improvement of bearing capacity is in direct proportion to the depth of pile end into the sand layer.