广州新电视塔工程核心筒顶部4层施工技术

Construction Technology of Upper Four Floors of Core Tube in Guangzhou New TV Tower

广州新电视塔核心筒顶部4层作为桅杆基础的延伸,核心筒结构形式较标准层有了很大改变,主要表现在先行安装的钢结构系统复杂,安装精度高,原有用于标准层的钢平台体系无法适应顶上4层的施工要求,项目部综合考虑各种因素,最终采取钢平台空中解体、分别提升的技术方案,避开了阻挡钢平台提升的结构环梁和钢板剪力墙,顺利完成结构施工。

As extension of mast basement, the upper four floors of core tube have very much change on structure style comparing with the standard floor. The main change is the existing steel platform used in standard floor construction can＇t satisfy the construction requirement of the upper four floors because the installed steel structure system is very complex and has high installation precision. Considering all influence factors, the authors take technology scheme of air disintegration and lifting alone of steel platform to avoid structure ring-beam and steel plate shear wall which hold up lifting of steel platform. All these measures can assure complete successfully structure construction.