武汉国际博览中心椭球面网壳低位拼装技术

Low-position Assembly of Ellipsoid Shell of Wuhan International Expo Center

椭球面网壳是武汉国际博览中心洲际酒店星空会所椭球体钢连廊的围护结构。针对其拼装难题,结合结构形式特点,提出了椭球面网壳低位拼装技术,地面与裙房顶拼装相结合,将网壳分为6个单元,拼装胎架量身定做,可重复使用,网壳拼装时无须三维测量定位,第1-5单元地面拼装,单元内分块,块内焊接,块间对接,转运裙房顶,挂式安装。第6单元在20层桁架楼面上拼装,短行程提升,补杆对接。实践表明,该技术拼装精度高,安全、高效。

Ellipsoid shell is the retaining structure of ellipsoid steel corridor for Star Club of Continental Hotel of Wuhan International Expo Center. Based on the difficult of its assembly,combined with the characteristics of the structure,this paper introduces the low-position assembly technology of ellipsoid shells,the assembly on the top of the podium is combined with ground. The shells are divided into six units,the assembly jig is customized,which could be reused,and shell assembly does not need threedimensional measurement and positioning. No. 1 to No. 5 unit assembly is on the ground,blocking in unit,welding in block,docking among blocks,transporting on the top of the podium,hanging-type installing. No. 6 unit assembly is on the 20 th truss,lifting with short stroke,docking with reinforcing bar. Engineering practice shows that the assembly technology is accurate,safe and efficient.