福州海峡奥体中心体育场空间巨型劲性环梁施工技术

Construction Technology of Space Giant Stiffness Ring Beam in the Strait Olympic Sports Center Stadium of Fuzhou

福州海峡奥林匹克体育中心体育场工程钢结构罩棚内环支座空间巨型劲性环梁属于超高超重超大截面劲性钢筋混凝土组合结构。单节最大钢梁重达10t,钢梁对接焊拼装为高空作业,型钢外包钢筋直径大、量多,模板支撑超高超重,混凝土下料空间狭小、振捣设备无法插入,质量难以保证,对此制订针对性施工方案,快速、精确地完成了该空间巨型劲性环梁的施工。

Space giant stiffness ring beam,the steel canopy bearing inner ring for Fuzhou Strait Olympic Sports Center Stadium, belongs to steel reinforced concrete composite structures which locates at ultra high altitude, overweight and has large section. It is difficult to guarantee the construction quality because the single largest steel beams weighing 10t, steel beams butt welding aerial, large quantities of large diameter steel outsourcing rebar, overweight and ultra？high formwork supports, and narrows concrete pouring space and vibrating equipment cannot be inserted. For above difficulties, authors develop targeted construction program and completed construction tasks of the space giant stiffness ring beam quickly and accurately.