Settlement Behavior of Pile Group Based on Settlment Ratio

The Q-S curve of single pile contains much information of pile-soil interaction and construction influence.So it's reasonable that Q-S curve should be combined with the analysis of pile group settlement.Then calculation method of pile group settlement based on Q-S curve is proposed.Many researches show pile group interaction theory overestimates interaction effect in pile group.This paper collects 77 observational examples including single pile settlement and pile group settlement.71 examples are used in calculating settlement ratio.Lastly six examples are analyzed with pile group settlement method based on Q-S curve.Analysis results show the method is reasonable,more accurate and has strong regional applicability.