某工程大跨度屋盖普通钢筋混凝土梁施工

Construction for Long-span Roof with the Normal Reinforced Concrete Beam in Some Building

大跨度屋面梁的施工质量是建筑结构可靠性的关键。而高空模板支撑、钢筋、混凝土作为钢筋混凝土结构施工中三大分项,都举足轻重,挠度和裂缝更是检验大跨梁施工质量的重要指标,为此,梁起拱值和施工缝设置是大跨度屋盖梁结构可靠性的关键因素。从这几个方面介绍该工程大跨度屋盖普通钢筋混凝土梁施工的一些方法和要点。

Construction quality of long-span roof beam is critical for structural reliability.The high-sky formwork support,reinforcement,concrete construction as three main items of reinforced concrete structure are significant,and deflection and crack are the important indexes for testing construction quality of the beam.So the pre-deflection value and layout of construction joint are the key factors for reliability of long-span roof beam.The author introduces some construction methods and the key points on long-span reinforced concrete roof beam form these aspects.