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明挖顺序法施作的地铁箱体,在基坑支护结构施工完后,从底部自下而上顺序浇筑混凝土,浇完底板后,需拆除最下面一道支撑,以便于浇筑侧墙和顶板,利用施工完的底板(达到一定强度)作为最下面一道支撑,本文利用有限元方法验算此过程中支护结构的安全性。
Excavation order method for the metro cabinet, after the construction of the foundation pit support structure, pouring concrete from the bottom from the bottom up sequence, after pouring the floor, you need to remove the bottom of a support in order to facilitate the placement of the side walls and roof , Using the finished floor (reaching a certain strength) as the bottom support, this paper uses finite element method to verify the safety of the supporting structure in this process.