摘要
重庆来福士观景天桥底部弧形铝板幕墙系统位于200m高空,面积约8700m^2,具有提升场地条件复杂、提升高度高、风荷载影响大、提升吊点布置复杂、提升结构刚度弱等特点。结合现场条件及结构特点,提出了"地面拼装,分段提升,靠近塔楼侧提升段先提升再滑移就位"的整体施工方案。针对高空提升过程中,风荷载作用下提升结构摆动过大的问题,提出了竖向预应力拉索水平位移控制系统,有效地控制了提升过程提升结构的水平摆动量;通过"先提升后滑移"技术,巧妙解决了塔楼边缘幕墙系统水平投影和塔楼边界碰撞的难题;应用倾斜起吊技术,实现了利用单一拼装场地的多次提升施工;对提升吊点定位、提升控制等关键问题进行分析,最终安全、经济、高效地完成了幕墙系统的提升安装施工。
The bottom arc aluminum panel curtain wall system of Chongqing Raffles scenic space corridor is designed to be 200 m above the ground with an area of 8700 m^2. This project is characterized by complex lifting site conditions,large lifting height,large influence of wind load,complex lifting points layout,weak lifting structure stiffness. The construction program of "low level assembly,sectional lifting,some of them sliding after lifting"is put forward by taking into account of the on-site condition and structural characteristics. In view of large influence of wind load,horizontal displacement control system of vertical prestressing cables is proposed,which controlled the horizontal translation of lifting structure effectively. Through the technology of "sliding after lifting ",collision between the edge of curtain wall system and tower boundary is solved skillfully. Several different lifting processes are achieved on a single assembly site by using inclined lifting technology. Key problems such as lifting point positioning,lifting control are analyzed,and the lifting project is completed safely,economically and efficiently.
作者
牛功科
梁存之
岳国君
Niu Gongke;Liang Cunzhi;Yue Guojun(China Academy of Building Research,Beijing 100013,China)
出处
《建筑科学》
CSCD
北大核心
2020年第3期134-138,共5页
Building Science
基金
“十二五”国家科技支撑计划课题“建筑结构绿色建造专项技术研究”(No.2012BAJ03B06)。
关键词
整体提升
提升控制
竖向预应力拉索水平位移控制系统
高空滑移
倾斜起吊
integral lifting
lifting control
horizontal displacement control system of vertical prestressing cable
high level sliding
inclined lifting
