Abstract：
Beijing Greenland Center No.4 business office building project is a super high-rise building, building height of 260m, high-rise steel structure roof reached 20 meters high, the steel truss with large slenderness ratio, poor stability. Influence of high-altitude wind installation difficulty is greater, the high-rise steel truss rod, welding quality requirement is high, the quantity of welding. BIM technology optimization of truss column base connection form use the Department of project, take the truss temporary support optimization of a series of measures to ensure the stability, installation and construction quality of high-rise steel truss roof.
