The Application Research of Fine Sand in High-speed Railway Embankment Filling

The AB material (A-Quality Packing; B-Good Packing) which is used in embankment filling is very scarce when we build railway in Jiang-han Plain. Combining successful experience used fine sand in embankment in different engineering at home and abroad., considering the geography of high-speed railway from Wuhan to Yichang, four kinds of possible programs for high-speed railway embankment are proposed. Fine sand replacing partial AB material is used for the first time. And then the numerical analysis are implemented and the original design and the four feasible options are compared, at last the optimal reclamation program is determined. The research reveals the regular pattern of deformation and stress in high-speed railway embankment which use fine sand to replace partial AB material, and guides the embankment construction of test section from DK84+850 to DK84+960 in Wuhan-Yichang High-speed Railway. Therefore,the study has very vast prospect and some guiding significance to similar engineering.