The recently developed elasto-viscoplastic Creep-SCLAYIS model has been used in conjunction with PLAXIS 2D to investigate the effectiveness of vibro-replacement in a creep-prone clay.The CreepSCLAYIS model accounts for anisotropy,bonding,and destructuration,and uses the concept of a constant rate of viscoplastic multiplier to calculate creep strain rate.A comparison of settlement improvement factors with and without creep indicates that ’total’ settlement improvement factors(primary plus creep) are lower than their ’primary’ counterparts(primary settlement only).The lowest settlement improvement factors arise for analyses incorporating the effect of bonding and destructuration.Examination of the variations of vertical stress with time and depth has indicated that vertical stress is transferred from the soil to the column as the soil creeps.This results in additional column yielding.In addition,the radial and hoop stresses in the soil are lower for the ’creep’ case.The reduced radial stresses lead to additional column bulging and hence more settlement,whereas the hoop stress reductions appear to be a secondary effect,caused by additional plastic deformation for the ’creep’ case. The recently developed elasto-viscoplastic Creep-SCLAYIS model has been used in conjunction with PLAXIS 2D to investigate the effectiveness of vibro-replacement in a creep-prone clay. CreepSCLAYIS model accounts for anisotropy, bonding, and destructuration, and uses the concept of a constant rate of viscoplastic multiplier to calculate creep strain rate. A comparison of settlement improvement factors with and without creep indicates that ’total’ settlement improvement factors (primary plus creep) are lower than their ’primary’ counterparts (primary settlement only) lowest settlement improvement factors arise for analys incorporating the effect of bonding and destructuration. Examination of the variations of vertical stress with time and depth has indicated that vertical stress is transferred from the soil to the column as the soil creeps. This result in additional column yielding In addition, the radial and hoop stresses in the soil are lower for the ’creep’ case. Reduced radial st resses lead to additional column bulging and therefore more settlement, and the hoop stress reductions appear to be a secondary effect, caused by additional plastic deformation for the ’creep’ case.