Laminated floor slab for steel buildings

Abstract

The invention relates to a laminated floor slab for steel buildings, which belongs to the field of building profiles and comprises a prefabricated concrete bottom plate, middle keels and a cast-in-place concrete top layer. The prefabricated concrete bottom plate is composed of a hot galvanized wire mesh, transverse clamping channel steel strips, side plates and a cast concrete layer. Crack resistance and seismic resistance of the floor slab are improved greatly. The middle keels are longitudinally disposed at intervals and fixedly connected with the transverse clamping channel steel strips of the prefabricated concrete bottom plate, so that stability and no shifting of the middle keels are ensured. The middle keels are totally enclosed in the cast-in-place concrete layer by the cast-in-place top layer, so that casting quality of cast-in-place concrete is guaranteed, and the strength of the cast-in-place concrete top layer is fully enhanced. The laminated floor slab is high in rigidity, high in bearing capacity, crack-resistant, excellent in seismic resistance, excellent in overall thermal insulation and sound insulation properties, simple in manufacture and available for industrial on-line production. Therefore, the requirements of high-rise steel buildings and large-span floor systems on floor slabs can be widely met.

Description

technical field [0001] The invention relates to a laminated floor slab for a steel structure building, which belongs to the field of building profiles. Background technique [0002] At present, there are cast-in-place floor slabs and prefabricated floor slabs used in China. The cast-in-place floor slabs have good integrity, but they need on-site formwork and concrete pouring. The construction period is long, difficult, and the formwork is worn out. The cost is high, and the prefabricated floor does not require on-site formwork, the construction period is short, and the cost is low, but the prefabricated components are self-heavy, difficult to hoist, cracks are prone to occur in the assembly parts of the components, and the integrity is poor. There are also deficiencies in the existing laminated floor slabs. Ribbed prestressed concrete prefabricated component slabs, including reinforced concrete bottom slab, reinforced concrete longitudinal ribs and bottom prestressed tendons...

AI Technical Summary

Problems solved by technology

[0002] At present, there are cast-in-place floor slabs and prefabricated floor slabs used in China. The cast-in-place floor slabs have good integrity, but they need on-site formwork and concrete pouring. The construction period is long, difficult, and the formwork is worn out. The cost is high, and the prefabricated floor does not require on-site formwork, the construction period is short, and the cost is low, but the prefabricated components are self-heavy, difficult to hoist, cracks are prone to occur in the assembly parts of the components, and the integrity is poor. There are also deficiencies in the existing laminated floor slabs. Ribbed prestressed concrete prefabricated component slabs, including reinforced concrete bottom slab, reinforced concrete longitudinal ribs and bottom prestressed tendons, this prefabricated bottom slab has concrete perforated ribs, which is convenient for passing steel bars, but the prefabricated component slab is easy to break during transportation and hoisting, prefabricated The production process of the prestressed tendons of the floor is complicated, the anti-arch value of the prefabricated components is large, and the floor is thin. The prestressed tendons inside lead to poor fire performance of the laminated floor. At the same time, more slab bottom supports are required during construction. , not suitable for large-span floor structures

[0003] For example, the patent of Publication No. CN101769030A discloses a prefabricated concrete floor with steel ribs, including a prefabricated concrete floor with steel ribs, longitudinal steel ribs, prefabricated floor structural steel bars, holes reserved on the longitudinal steel ribs, and steel ribs. The suspension ring is reserved, the construction of the prefabricated floor is complicated, and it is not convenient for factory production

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