重载运营铁路路基斜向注浆挤密桩布设参数研究

以朔黄铁路既有重载铁路路基斜向注浆挤密桩加固为研究对象，针对不同斜向注浆挤密桩布设参数，运用有限元模拟软件 Abaqus，对路基的加固效果进行分析研究。结果表明:铁路路基的竖向变形，随着挤密桩角度的增加先增强后减弱，随着挤密桩间距增大而减弱；铁路路基变形呈“W”形，在布设挤密桩后变形位移差值减小。

Study on the Layout Parameters of Oblique Grouting Compaction Pile for Operating Heavy-haul Railway Subgrade

Taking the oblique grouting compaction pile reinforcement of existing heavy-haul railway subgrade of Shuozhou—Huanghua Railway as the research object, the finite element simulation software ABAQUS is used to analyze and study the reinforcement effect of subgrade according to different oblique grouting compaction pile layout parameters. The results show that the vertical deformation of railway subgrade increases first and then decreases with the increase of compacted pile angle, and decreases with the increase of compacted pile spacing. The deformation of railway subgrade is in the shape of "W", and the difference of deformation and displacement decreases after the compaction pile is laid.