The Application of the Creep Model in the High-Speed Railway Subgrade Settlement Prediction Techniques

Settlement prediction is an important method to judge whether the post-construction settlement of the high-speed railway foundation satisfies the requirement of the standard. The paper uses the numerical calculating method based on creep model to predict the subgrade post-construction settlement of the surcharge preloading processing segment of the high-speed railway through inversing the creep parameters, and does comparative analysis with the more researched function fitting methods. The conclusion is that: (1) the numerical calculating method based on creep model is feasible to predict the post-construction settlement; (2) the method can predict the settlement trend with any time starting point; (3) the method can predict the settlement with relatively less actually measured data so as to saving project cycle.