分段外挑钢梁搭设高空超长悬挑模板支架技术

High-altitude Super-long Cantilever Template Bracket Technology for Segmented Steel Neams

南宁皓月大厦第26层高空大跨度悬挑结构施工中,在24层和25层分两段搭设钢梁外挑架,第一段钢梁外挑4 m,第二段钢梁利用第一段挑架支撑向外挑3 m,形成由下往上分段向外悬挑7 m的高空模板支撑体系。浇完混凝土后模板支架仅下沉4.1 mm,施工效果良好。

In the construction of the 26-storey high-altitude long-span cantilever structure of Haoyue Mansion in Nanning,steel beam external cantilever is erected in two sections on the 24-storey and 25-storey,the first section of steel beam external cantilever is 4 m,and the second section of steel beam external cantilever is 3 m by using the first section of cantilever support,forming a 7 m highaltitude formwork support system which is cantilevered from bottom to top.After pouring concrete,the formwork support only sinks 4.1 mm,and the construction effect is good.