临近既有线的地道软土深基坑支护技术

庄桥站旅客地道为临近既有线软土深基坑工程,面临列车动载大、软土侧压力大、土体渗流明显等基坑危害.通过优化设计,解决基坑支护安全性与经济性的矛盾.同时,在施工过程中,通过实时监测、变形预警和信息化施工等手段确保方案落实,减少动载振动影响和开挖时空效应.

Supporting Technology of Tunnel Deep Foundation Pit in Weak Soil Near Lines

Zhuangqiao Station passenger tunnel, the deep foundation pit project near the existing line and in weak soil, is affected by many foundation pit harms, as the train dynamic load, the lateral pressure of weak soil, the soil obvious seepage and so on. The optimized design solves the contradiction of security and economy for foundation pit supporting. At the same time, makes use of the real-time monitoring, early warning and deformation information construction measures to ensure the implementation of scheme, to reduce the dynamic load vibration influence and excavation space effect in construction process.