Light prefabricated stair and manufacturing method thereof

Abstract

The invention provides a light prefabricated stair which is light in weight and good in strength. The light prefabricated stair comprises a concrete stair body and a plate-type combined framework arranged in the concrete stair body; the concrete stair body is formed by pouring foamed concrete; the plate-type combined framework comprises a bottom plate, a plurality of supporting plates and a plurality of connecting plates; the multiple supporting plates are continuously arranged on the surface of the bottom plate in the length direction of the bottom plate; the multiple supporting plates are arranged on the surface of the bottom plate at intervals in the width direction of the bottom plate; the multiple connecting plates are arranged at intervals in the length direction of the bottom plate and intersect with the multiple supporting plates; and a plurality of evenly-distributed unit holes are formed in the surface of each supporting plate and the surface of each connecting plate. According to the light prefabricated stair, each step plate part on the concrete stair body is effectively supported through the plate-type combined framework, so that the situation that the compressive strength, the bending strength and the impact strength are reduced due to the fact that no framework support exists in step plates poured only by foamed concrete is avoided.

Description

technical field [0001] The invention relates to a staircase and a manufacturing method thereof, in particular to a lightweight prefabricated staircase and a manufacturing method thereof. Background technique [0002] Prefabricated stairs are an important type of prefabricated components in prefabricated concrete structures, mainly divided into prefabricated beam stairs and prefabricated slab stairs. The prefabricated beam staircase is composed of stringers and treads, the treads are supported on the stringers, and the stringers are supported on the platform beams at both ends of the stairs. The platform beams and stringers are cast in situ and the treads are fully prefabricated. The prefabricated slab staircase is to prefabricate the inclined beams and the treads as a whole, and they are directly lapped on the platform beams during construction. The reinforcement of the slab stairs is relatively simple. Usually, a layer of reinforcement cage is laid under the treads, and th...

AI Technical Summary

Problems solved by technology

[0004] During the processing of the steel cage, the labor intensity of the workers is high and the efficiency is low, and the binding can only be done manually. The spacing of the steel bars of the steel cage is difficult to control. Excessive spacing deviation will cause uneven force on the steel cage and affect the prefabricated stairs. product quality

[0005] In addition, in order to pursue the lightness of the stairs, most of them set weight-reducing holes in the treads, or use foamed cement to make the treads. These methods all have a certain impact on the compressive strength, bending strength and impact strength of the stairs, which is not conducive to The long-term use of stairs is also not conducive to the safety of the building

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