旋喷桩在重载既有铁路路肩加固加宽中的应用

The rotary jet grouting pile application in heavy-duty existing railway roadbed shoulder widening

以神朔铁路K158＋118-K151＋464段路堤路肩加固设计为例，结合该工程路基加固加宽原则，对其加固加宽方案进行了比选，确定采用旋喷桩法施工，具体阐述了旋喷桩施工工艺和质量控制要点及质量检查方法，指出该工艺简洁、实用，效果良好。

With K158 ＋ 118--K151 ＋ 464 segment roadbed shoulder widening design in Shen-Shuo railway as example, combined with the engineering roadbed strengthening and widening principle, its strengthening and widening planning was selected, the rotary jet grouting pile method construction was finally determined. The rotary jet grouting pile construction process and quality control points, quality checking method were detail illustrated. It pointed out that the method process brevity, practical and the effect was better.