Research on Settlement and Deformation Control of Newly-built High-speed Railway and Existing Line Foundation under Different Overlap and Filling Types

Subgrade filling of high-speed railway will cause additional settlement and deformation existing lines.In this paper,using the finite element analysis platform (Taxis 2D) considering line itself, This paper analyzes impact new old subgrade lap type layer filled lesson on implementation subgrade. The results illustrate following points:(1) Compared with different overlapping surface types, those points have a greater line; (2) height steps is 0.6m width 1.0m.In subsequent layered construction process, each level loading capacity 30cm more reasonable, which can effectively control influence railway. research provide reference for optimization similar roadbed construction.