FIELD STUDY ON DEEP JETTING MIXING PILES ROADBED IN SEASIDE AREA

Xiamen haicang road is located in seaside area, where silt distributes widely, and the thickness of silt is changed greatly in differently sites. The deep jetting mixing piles were not penetrate whole silt layer in thick silt places, and become floating piles. Through in-situ experiments, the settlement and internal deformation of pile and silt, the stress ratio between pile and soil were studied. Then treatment result was evaluated by bearing test, spt test and dmt test.