Resonant column experimental study of dynamic properties of soft clay foundation with cement soil mixing piles

Through the Global Distribution System (GDS) resonant column tests on soft clay foundation with cement soil mixing piles samples, the effects of shear strain, cell pressure and replacement ratio of cement soil on dynamic properties are analyzed. The test results shows that, the change tendency of the dynamic shear modulus G and damping ratio D of the cement soil mixing pile soft clay foundation is the same as that of soft clay, the dynamic shear modulus G and damping ratio D of the soil are significantly influenced by the cell pressure and the replacement ratio in the small strain range; the influence is weakened with the increase of strain. The G(max) of soft clay foundation with cement soil mixing piles shows linear relationship with cell pressure; the enhancement effect on G(max) of the replacement ratio is significant at high cell pressure. The results can provide a reference for the dynamic parameters of the soft clay foundation with cement soil mixing piles.