This paper introduced the application of reinforcement truss floor support plate in a re-covering steel structure engineering, separately elaborated the composition, characteristics, construction technology and operation key points of reinforcement truss floor support plate, and through the comparison to opening shaped pressure steel plate, pointed out that the reinforcement truss floor support plate was helpful for acceler- ating speed, reducing cost, the integrated benefit was distinct.%针对钢筋桁架楼承板在某加层钢结构工程中的应用进行了介绍，分别阐述了钢桁架楼承板的构成、特点、施工工艺及操作要点，并通过与开口形压型钢板对比，指出钢筋桁架楼承板有利于加快进度，降低造价，综合效益显著。
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