Prestressed concrete hollow slab and construction method thereof

Abstract

The invention relates to a building floor slab, in particular to a prestressed concrete hollow slab and a construction method thereof. The hollow slab comprises two SP plates, wherein two ends of each SP plate are provided with nicks for holding column reinforcements respectively; the sections of each SP plate are provided with a plurality of reinforcement casings; one end of each reinforcement is connected with the one reinforcement casing, and the other end of each reinforcement is free; a plurality of steel hinge ropes are pre-embedded inside the two SP plates along the direction of long edges; and two ends of the steel hinge ropes are threaded out from the nicks, wherein the out-treaded ends of the steel hinge ropes pre-embedded inside a first hollow SP plate are connected with a steel-hinge-rope fixing frame. The method comprises the steps of placing the reinforcements in the SP plates through the nicks at two ends of the two SP plates, installing and fixing the steel-hinge-rope fixing frame and the reinforcements on the column reinforcements, bundling and fixing intersections of the steel hinge ropes, the reinforcements and the column reinforcements by use of bundling reinforcements, inserting porous steel pipes into second holes of the SP plates, injecting concrete into the pipes and casting the concrete into the SP plates after concrete strength is up. The prestressed concrete hollow slab has the characteristics of saving energy consumption and the like, along with simple rapid installation.

Description

technical field [0001] The invention relates to building floor slabs, in particular to a prestressed concrete hollow slab and a construction method thereof. Background technique [0002] The floor slab used in the building, the cast-in-place slab is a floor slab poured at the construction site according to different floor slab specifications of the specific floor. The formwork is supported at the construction site, and the bottom is paved with double-layer two-way steel bars, and it is directly poured with concrete on site. After forming, the entire slab is a single casting. The overall seismic resistance and impermeability of the cast-in-place slab are good, there is no gap between the slabs, and it is usually not affected by the settlement of the foundation. The overall force is uniform and the partition wall compartment can be built at will. However, the amount of steel bars is large, the cost is high, the load is heavy, the on-site construction process is complicated, ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a prestressed concrete hollow slab and its construction method, which solves the problem that the joints of the existing SP slab cannot be handled, and can replace the cast-in-place slab

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