Papers by Author: Shan Xiong Chen

Abstract: 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.

Abstract: Based to the geometric and mechanical parameters of the typical high-speed railway, the settlement values on the foundation and the subgrade face with different structure layer load are obtained by the numerical calculation. According to these numerical results, the power functional relationship between Sst / S∞ and Pst /hγ is found, and a new evaluation method of the subgrade face settlement caused by the structure layer using the measure data is put forward. Through analyzing the settlement data of different conditions, the parameters of the formula are discussed, and some conclusions and suggestions are given. This new evaluation method will provide some reference for the design and the evaluation of the subgrade settlement caused by the structure layer of the high-speed railway.