关于钢筋混凝土筒仓顶板支撑体系的讨论

Discussion on the Supporting System of the Reinforced Concrete Silo Roof

文章结合河北大唐国际丰润电厂新建三座3万吨储煤筒仓工程筒仓钢筋混凝土顶板支撑体系的施工难题,对比介绍满堂脚手架支撑体系,钢平台支撑体系,型钢混凝土组合结构无支撑体系顶板等三种施工方法,并简要说明型钢混凝土组合结构顶板在该工程中的应用。满堂脚手架工艺简单,支撑稳定,便于计算,但资源投入大,拆除时材料运输难度大。钢平台支撑体系吊装及安装难度大,专业性强,受力复杂,拆除难度大,但材料可重复利用,资源投入少,危险系数大。型钢混凝土组合结构施工简便,可与筒仓壁板同时施工,节约工期,支撑体系拆除工作量小,混凝土养护时间短,但需要投入型钢和大型吊装设备。

Combined with the construction problems of reinforced concrete roof support system of three newly built three 30,000-ton coal storage silo project in Hebei Datang International Fengrun Thermal Power Co.,Ltd.,this paper introduces three construction methods of full scaffolding support system,steel platform support system,steel-steel concrete composite structure without support system roof,and briefly describes the application of the steel reinforced concrete composite structure roof in this project.The technology of full scaffold is simple,the support is stable and easy to calculate,but the resource input is large,and the material transportation is difficult when dismantling.It is difficult to lift and install the support system of steel platform,which is characterized by strong specialty,complex stress and difficult removal.However,the materials can be reused,with less resource input and high risk coefficient.The steel-concrete composite structure is easy to construct,and can be constructed simultaneously with the silo wall panel,which saves the construction period.The demolition workload of the support system is small,and the concrete curing time is short.However,the steel section and large hoisting equipment are needed.