Papers by Author: Xi Chang Xu

Abstract: Based to the design scheme of the typical high-speed railway cutting, the numerical model on the high-speed railway cutting settlement deformation under rebound effect is established with suitable geometric and mechanical parameters. Some calculation cases are designed to study the settlement deformation evaluation method of high-speed railway cutting under rebound effect. Through analyzing the settlement deformation data of different conditions, the optimal curvilinear regression method is determined, the reasonable dead load observation period is discussed, and a new settlement deformation evaluation method with the assessment coefficient is established. This study will provide some reference for the design and the settlement deformation evaluation of the high-speed railway cutting under rebound effect

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.