【摘要】 建立了简化考虑顶管管节的地层模型,对某工程的施工过程进行了三维有限元分析,得到了地表在纵向和横向的变形曲线.研究了开挖面正面推力、周围土体摩擦力、注浆加固等影响因素对土体变形的影响,得到了一些对顶管施工有指导作用的结论和建议.更多还原

【Abstract】 A simplified numerical model was presented,based on which a three dimensional FEM analysis was carried out.Ground deformation was studied in both the transverse and longitude sections.In addition,several factors e.g.the additional stress,the pipe-soil friction and grouting reinforcement etc.were discussed.Some useful conclusions were obtained and some suggestions were given.更多还原