Several attaching points are usually provided on the column of self-elevating tower crane in connection with the building under construction.
自升塔式起重机的塔身通常具有若干附着点与施工中的建筑物相连接。
During cantilever construction of CCTV main building, high frequency, high precision and multi-point dynamic monitoring is used in tower crane displacement installation and usage.
CCTV主楼悬臂施工阶段，对塔式起重机在移位安装至悬臂部位过程中和使用状态下进行高频次、高精度、多点位动态监测。
Unreasonable design project can arose the capsizal of tower crane in building its base on soft soil foundation, and it will also increase the construction cost.
在软土地基中建造塔吊基础，设计方案的不合理会引发塔吊倾覆的安全事故，或加大了项目成本。
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