The impact of soft soil creep is not considered in surcharge precompression when determining height and time of surcharge preloading. This paper calculates the settlement of soft clay by using ABAQUS considering the effect of soft soil creep on Wuhan-Yingshan Expressway soft soil subgrade project. The relationship with different heights of surcharge preloading settlement and preloading time are analyzed

then compared with the measured results

it shows that the validation of considering the creep of soft soil in settlements prediction. The settlement of soft clay will increase with the height of surcharge preloading. Within a certain range

the height of surcharge preloading increases

the time of preloading will be shorter. But nonlinear relationship exists between each other; the existence of a best height of surcharge preloading makes the time of surcharge preloading shorter in the stability of the road foundation.