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某超高层建筑结构类型为钢框架-核心筒结构,建筑高度349 m;根据施工部署、结构特点及核心筒顶模结构,塔吊采用外挂内爬式附着形式。塔吊中心距外墙面4 850 mm时,爬塔支撑架结构受力为最不利情况,最大竖向变形为6.0 mm,满足要求;梁单元应力比最大值为0.43<1,满足设计强度要求。主梁处预埋件和耳板的位移均较小,应力分布较均匀,应力值没有达到屈服强度,节点连接形式满足强度要求。核心筒变形主要集中在支撑点附近,最大位移为5.43 mm,整体变形很小,整体稳定性满足要求。
The structure type of a high-rise building is steel frame-core tube structure, with a building height of 349 m. According to the construction deployment, structural features and core tube top mold structure, the tower crane adopts the plug-in attachment type. When the center of tower crane is 4 850 mm from the external wall, the force of the tower support structure is the most unfavorable situation, the maximum vertical deformation is 6.0 mm, which meets the requirements; the maximum stress ratio of beam unit is 0.43 <1, which meets the design strength requirements. The displacement of the embedded parts and the lug plate at the girder is smaller, the stress distribution is more uniform, the stress value does not reach the yield strength, and the node connection forms meet the strength requirements. Core tube deformation is mainly concentrated in the vicinity of the support point, the maximum displacement of 5.43 mm, the overall deformation is small, the overall stability to meet the requirements.