上海外滩金融中心深基坑施工技术

外滩金融中心深基坑施工中，应用“二墙合一”地下连续墙、钻孔桩隔离墙、钢筋混凝土内支撑和深层搅拌桩、压密注浆、双液注浆的支护方案，并通过制定合理的土方开挖方法、路线和支撑施工方案，加强环境监测，解决和控制了东西区受力不均衡和连续墙的二次变形，成功地保证了周边环境和基坑的安全。

Construction Technology in Large-scale Deep Foundation Pit of Shanghai Exterior-beach Financial Center

In the construction of the deep foundation pit of the Exterior-beach Financial Center,with the application of the retaining and protecting schemes of two-in-one underground continuous wall,holed-pile compartment wall,reinforced concrete inner supporting and deep stirring pile,thickened mush jetting and double-liquid mush jetting.The unbalanced loading between east and west areas and the secondary deformation of continuous wall are solved and controlled.Meanwhile,the surrounding environment and the safety of foundation pit are assured successfully by laying down the proper method of earth excavation,route and supporting construction scheme and intensifying monitoring of the environment.