水平旋喷桩加固技术在矩形顶管下穿填砂路基施工中的应用研究

Research on Application of Horizontal Jet Grouting Pile Reinforcement Technology in Construction of Rectangular Jacking Pipe Underneath Sand Filled Subgrade

为降低矩形顶管下穿填砂路基施工中风险,文中对超长水平旋喷桩加固技术进行研究,确定了超长水平旋喷桩的最优管幕支护关键参数(如管径和支护方式),实际施工效果和监测结果表明:该施工方法有效降低了施工风险。

In order to reduce the risk in the construction of the rectangular jacking pipe underneath the sand-filled subgrade,the reinforcement technology of the super-long horizontal jet-grouting pile was studied.The key parameters of the optimal pipe curtain support for the super-long horizontal jet-grouting pile were determined(such as pipe diameter and support Method),the actual construction effect and monitoring results show that the construction method effectively reduces the construction risk.