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某超高层建筑主塔楼59层,建筑高309m,垂直运输采用2台外挂内爬式动臂塔式起重机。待主塔楼结构封顶及顶模系统拆除完成后,由一台爬升式塔式起重机拆除另一台爬升式塔式起重机,再在屋顶安装4台屋面起重机并由大到小逐级拆卸,最后用人工拆卸WQ2屋面起重机。JCD6059和WQ20基础在3种状态下结构整体的位移与竖向位移均较小;加固后的WQ8和WQ2基础最大变形差分别为5.1mm和1.6mm,小于L/1000,满足变形要求。
A 59th floor of the main tower of a high-rise building with a building height of 309m and vertical transportation uses two plug-in inner climbing jib cranes. After the main tower structure roofing and top mold system demolition is completed, another climbing tower crane is demounted by a climbing tower crane, four roofing cranes are installed on the roof and demounted gradually from large to small, and finally Manual demolition WQ2 roof crane. The displacements and vertical displacements of JCD6059 and WQ20 are basically the same in all three states. The maximum deformation difference between WQ8 and WQ2 is 5.1mm and 1.6mm respectively, which is less than L / 1000, which meets the requirements of deformation.