软土地区双向大直径平行顶管工程的施工方案设计

Design of Construction Scheme for Double-way Large-diameter Parallel Pipe Jacking Engineering in Soft Soil Region

结合天津闸南路软土地质顶管工程的双向大直径平行顶管工程的施工方案设计,从工作井平面布置、尺寸选定、支护方案、顶力计算、后背墙设计、洞门止水、软弱土体加固和机械选型等方面进行了阐述。在实际施工中,圆满地完成了天津闸南路顶管工程施工。该方案设计经济、施工简便、安全可靠,应用效果良好,可为类似工程提供参考。

According to the construction scheme design of double-way large-diameter parallel pipe jacking engineering of Tianjin Zhanan Road Soft Soil Geological Pipe Jacking Project,the article sets forth the plane layout,dimensional selection,supporting scheme,jacking force calculation,back wall design,opening sealing up,weak soil reinforcement and mechanical-type selection of working shaft.This scheme is satisfied in the construction of Tianjin Zhanan Road Pipe Jacking Project.This scheme is economical design,convenient construction,reliable security and good application effect,which can be referred for the similar projects.