南京德基广场高空大跨度钢结构及幕墙安装

INSTALLATION OF AERIAL WIDE-SPAN STEEL STRUCTURE AND CURTAIN WALL IN NANJING DEJI SQUARE VELARIUM ENGINEERING

南京德基广场二期天幕工程包含钢结构工程及幕墙工程,由于位于裙楼9层中庭天井上空,且工程现场不具备搭设满堂脚手架的条件,具有很大的施工难度。通过导轨将钢梁水平移至现场脚手架操作台上,安装钢梁下方钢结构三角撑形成一榀索桁架,并完成钢梁的预起拱和拉索预张拉,然后再移至吊装部位,待全部钢梁就位后,对钢结构梁进行起吊安装;最后将幕墙铝型材安装到位,安装玻璃。

Nanjing Deji Square Phase II Velarium Engineering includes steel structure and curtain wall. There are huge construction difficulties, because the velarium engineering is located on the 9th floor of the podium building above the cortile patio and conditions for erecting full scaffold are not available on the project site. The steel beam is horizontally translated through rail onto the scaffold installation platform on the project site and the triangular support of steel structure under the steel beam is installed to form a single cable truss. Pre-arching of steel beam and pretension of cable are completed, and then they are moved to the hoisting position. The whole steel beam is lifted after being placed at the correct position; at last, the extruded aluminum products of curtain wall and glass are installed.