超高层组合结构施工过程竖向变形与危险工况分析

The Vertical Deformation and Severe Work Condition Analysis of High-rise Building Composite Structure Construction Process

考虑组合结构体系超高层建筑在施工期间的竖向压缩变形,通过Midas/gen软件建立有限元模型,进行施工期间危险工况验算分析,计算中考虑了筒体先于外框柱施工、混凝土材料的收缩徐变、施工过程中结构找平、风荷载、地震荷载等因素的影响。通过验算施工过程中结构竖向位移,得出竖向位移最大点位置,能够反馈给设计单位以便于进行进一步深化设计;通过建立危险施工工况有限元模型,得出结构层间位移变化,从而考虑设计加强措施。

By Midas/gen software to build high rise building composite structure construction process models, the vertical deformation and severe work condition analysis were done, which considered core tube construction prior to outer frame column, shrinkage creep of concrete, structural leveling during construction, wind loads and earthquake loads. Through checking the vertical deformation, the biggest vertical deformation can guide designer. Furthermore, severe condition simulation can get interlayer displacement angle to consider strengthening methods.