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沈阳博览中心工程钢屋盖长 2 0 4m、宽 144m ,作为主承力的大跨度横桁架采用分段制作地面预拼、搭设管式立体支撑胎架、高空拼装焊接工艺
Shenyang Expo Center project steel roof cover length 204m, width 144m, as the main force of the long-span horizontal truss segment prefabricated use of the ground to build tube-shaped three-dimensional support tire rack, high-altitude assembly welding process