某大悬挑结构支撑胎架卸载过程分析

Analysis on Support Frame Unloading Process of a Large Cantilever Structure

大悬挑结构因其独特的建筑表现形式而越来越广泛地被用于城市的地标性建筑。在其施工的过程中需布置一定数目的临时支撑胎架以完成悬挑部分的施工,而胎架卸载的过程使整个结构由临时支撑体系和设计结构共同受力转变为设计结构受力状态。为保证这一转变过程的安全,建立了某大悬挑结构的有限元模型,对胎架卸载的全过程进行分析计算,最后得出优化的胎架卸载方案。

Large cantilever structure was increasingly widely used in landmark buildings of a city as its unique architectural form. A certain number of temporary support frames were arranged to complete the construction of cantilever part of the structure. The integral working of temporary support frames and design structure was changed into condition of design structure working separately in the process of unloading support frame. To ensure the safety of this transformation process, the finite element model of a large cantilever structure was established, and the analysis on overall process of the support frame unloading was carried out subsequently, and an optimized support frame unloading scheme was obtained finally.