为了解决第一代和第二代钢桁架楼承板净高较小等缺点,工程师研制了第三代钢筋桁架彩钢楼承板。钢筋桁架彩钢楼承板第三代地板支撑板是改变和减少原有地板支撑板的凸型和高压型, 钢筋桁架彩钢楼承板将地板中的钢筋在工厂用半自动钣金焊接设备加工成钢筋桁架,以取代地板承载的凸高和支承板能力。厂内钢桁架与楼承板焊接后采用硅烷、纯锰磷化、水洗、烘干、镀锌等除锈防锈环保技术,采用高频电阻焊连接。模板系统将混凝土楼板中的钢筋与施工模板相结合,形成一个能承受施工阶段湿混凝土自重和施工荷载的承重构件,该构件在施工阶段可作为钢梁的侧向支撑。在使用阶段,钢桁架与混凝土共同承担使用荷载。
In order to solve the shortcomings of the first generation and the second generation of steel truss floor support plates, such as the smaller net height of buildings, engineers developed the third generation of steel truss steel bearing plates. The third generation of floor support plates is to change and reduce the convex and high-pressure type of the original floor support plates, and the steel bars in the floor are processed into steel bars trusses by semi-automatic sheet metal welding equipment in the factory, so as to replace the convex height and bearing plate of the floor Carrying capacity. After welding, silane, pure manganese phosphating, water washing, drying, galvanizing and other rust removal and anti rust environmental protection technologies are used to connect the steel truss and floor support plate in the factory with high frequency resistance welding. The formwork system combines the reinforcement in the concrete floor slab with the construction formwork to form a load-bearing component which can bear the dead weight of wet concrete and construction load in the construction stage, and the component can be used as the lateral support of steel beam in the construction stage. In the use stage, the steel truss and concrete work together to bear the service load.
1. The stress mode and combination mode of the truss floor are reasonable, and the cast-in-place concrete is rigid as a whole, so the construction and use of the two-way slab can be easily completed. However, the lower skin of the ordinary profiled slab is perpendicular to the direction of the rib, and the reinforcement cannot be located.