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在南方软土上进行有地下室的高层建筑基础施工时,以往都是整体挖土至稍高于地下室底板垫层的底标高,然后进行钻孔灌注桩承台施工,最后浇筑底板混凝土垫层。采用这种施工方法,如果不修筑临时运输道,就不能方便地把混凝土运到承台处;浇筑承台混凝土时,极易破坏附近原土基础;大开挖后,如果遇上雨天,容易泡坏原土基础。如果能改变施工顺序,便可克服上述
In the construction of foundations for high-rise buildings with basements on soft clay in the South, in the past, they were all excavated to a level slightly higher than the base floor cushion of the basement floor, and then the construction of the bored pile caps was completed, and the concrete cushion of the floor was finally poured. With this type of construction method, if temporary transit roads are not built, concrete cannot be easily transported to the platform. When pouring concrete on the platform, it is very easy to destroy the original soil foundation. After large excavation, if it is rainy, it is easy. Foam the original soil foundation. If you can change the construction sequence, you can overcome the above