摘要
针对上海市轨道交通9号线一期工程R413区间上、下行线和出入段盾构隧道下穿南新铁路环线工程,通过建立三维有限元模型,分析了旋喷桩加固对于控制既有铁路变形的效果。通过计算分析可知,旋喷桩的存在能够有效控制盾构隧道施工引起的既有铁路纵向和横向沉降及不均匀沉降,从而保证既有铁路安全运营不受影响。
Based on the shield tunneling of the first-stage project of R413 on line 9 of Shanghai urban rail transit under-passing the Nanxin railway, a 3D - FEM model is built. The effect of rotary jet pile reducing the influence of railway is analyzed through the model. Analysis result shows that the existing rotary jet pile can control the deformation and uneven deformation of transverse and longitudinal of the existing railway effectively. Therefore, the existing railway can keep normal operations.
出处
《地下空间与工程学报》
CSCD
2008年第5期860-864,共5页
Chinese Journal of Underground Space and Engineering
关键词
旋喷桩
加固
盾构隧道
三维有限元
rotary jet pile
reinforcement
shield tunnel
3D - FEM
