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目的以国家金融信息大厦超高位置玻璃幕墙支撑体系为工程背景,对多种支撑体系方案进行荷载工况的对比分析,以满足结构功能和设计要求.方法采用ANSYS有限元软件,先后建立了三种柔性单索支撑体系和一种刚性拉杆支撑体系方案的有限元模型,将风荷载和地震作用等效为静力荷载,通过在多组荷载工况下的计算,对比各个初步设计方案的承载能力及变形性能.结果柔性支撑方案一和方案二虽内力满足要求,但底层位移超出规范要求,方案三内力和相对位移均满足要求但绝对位移仍较大.而刚性方案各项指标均满足要求.结论对于在本工程高位幕墙中采用柔性单索方案索节点处变形较大不易控制,且给主体结构的反力较大,而刚性拉杆方案相对柔性结构更易于满足刚度和强度的要求,这为今后类似工程结构提供了参考.
Aim To analyze the load conditions of a variety of supporting systems in order to meet the structural functions and design requirements with the support system of ultra-high position glass curtain wall of National Financial Information Building as the engineering background.Methods ANSYS finite element software was used to establish three A kind of flexible single-cable support system and a rigid-rod support system are used as the finite element model. The wind and seismic loads are equivalent to the static load. Through the calculation under multiple load conditions, the bearing capacity of each preliminary design scheme is compared Capability and deformation performance.Results Flexural support solutions I and II, although the internal forces meet the requirements, but the displacement of the bottom exceeds the requirements of the specification, the internal force and relative displacement of the solution III meet the requirements but the absolute displacement is still large, while the indicators of the rigidity scheme meet the requirements .Conclusion It is difficult to control the deformation of the cable at the node where the flexible single cable is used in the high curtain wall of the project, and the reaction force to the main structure is relatively large, whereas the rigid rod solution is more likely to meet the rigidity and strength requirements than the flexible structure It provides a reference for the similar project structure in the future.