城市综合管廊深基坑支护结构体系研究

Study on Supporting Structure System of Deep Foundation Pit of Urban Comprehensive Pipe Gallery

总结了管廊深基坑的变形机理和影响因素;分析了支挡结构、土钉墙、自然放坡等方法在管廊深基坑支护体系中的应用;以某城市综合管廊项目为研究对象,通过MIDAS软件建立三维计算模型,得到了开挖工况管廊深基坑支挡结构顶部位移和周边地表沉降变形规律。

The deformation mechanism and influencing factors of deep foundation pit of pipe gallery are summarized firstly;Then,the application of retaining structure,soil nailing wall and natural slope in the support system of pipe gallery deep foundation pit is analyzed;Finally,taking an urban comprehensive pipe gallery project as the research object,the three-dimensional calculation model is established by the software MIDAS,and the top displacement of the retaining structure of the deep foundation pit of the pipe gallery under excavation conditions and the surrounding ground settlement deformation laws are obtained.