Profiled steel sheet

Abstract

The invention discloses a profiled steel sheet and aims at providing a profiled steel sheet having strong joint working capability together with concrete, approximately equal bending resistance moment at front and back effective cross sections as well as good fire resistance and corrosion resistance. The profiled steel sheet comprises a bottom plate (1), a top plate (2), ventral plates (3), a steel bar bracket (5) and a suspended ceiling hook (6). The ventral plates (3) are arranged at the two sides of each top plate (2). A cavity with lateral surfaces communicated with outside is formed by the enclosure of the top plate (2), the ventral plates (3) and the bottom plate (1). The two ends of the steel bar bracket (5) are suspended from the edge of the top plate (2). The suspended ceiling hook (6) penetrates through the bottom plate (1) and is fixed on the top plate (2). When a plurality of profiled steel sheets are paved side by side, a longitudinal edge (7) extends into and is mutually meshed with a longitudinal edge (8). The profiled steel sheet can be used for steel structural buildings and can form a composite floor plate after concreting thereon.

Description

technical field [0001] The present invention relates to profiled steel sheets. The present invention is especially designed but not exclusively applied to steel and concrete composite building (roof) roofs, and the present invention is described in this context. Background technique [0002] The steel and concrete composite slab formed by directly pouring concrete on the profiled steel plate is an important building (roof) cover form in steel structure buildings, and its application has been very common. There are two main ways to use the profiled steel plate in the composite building (roof) cover: one is only used as a formwork in the construction stage; the other is used as a formwork in the construction stage, and it is used as a longitudinal reinforcement and concrete in the normal use stage of the building structure. The profiled steel plate in the prior art is made of a hot-dip galvanized thin steel coil as a raw material, and is formed by multi-channel rolling, and i...

AI Technical Summary

Problems solved by technology

Therefore, the most widely used double-sided galvanizing amount is 275g / m 2 The profiled steel plate made of hot-dip galvanized thin steel coil is far from meeting the 50-year corrosion life requirement under the general urban atmosphere

In addition, when the bottom of the composite floor slab is equipped with additional reinforcement, the reinforcement is often placed directly in the rib groove of the profiled steel plate during construction, and there is no measure to ensure the thickness of the protection layer of the reinforcement.

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