Prefabricated staircase connection method

Abstract

The invention relates to a prefabricated stair connection method, comprising a floor platform and a stair. The upper end of the stair is placed on the upper floor; polystyrene is used to fill the space between the stair and the upper floor, and cement mortar is used for leveling; the lower end of the stair is placed on the lower floor, and the stair is connected to the upper floor. The lower floors are separated by linoleum and leveled with cement mortar; during installation, the prefabricated components to be connected are transported to the site, and after adjusting their positions properly, the corresponding steel bars are corrected, and then connected to the reserved steel bars at the connection site, and Concrete grouting is poured at the joints to achieve reliable force transmission; spiral bars arranged along the length of the hole are embedded around the pre-embedded steel bars to strengthen the integrity of the connection between components; the connection structure is relatively simple to operate and low in cost. It avoids a large number of steel bar lapping, binding, and cast-in-place work at the junction, which greatly improves work efficiency. It is more suitable for the connection between components of prefabricated stairs in the construction of industrialized houses.

Description

technical field [0001] The invention belongs to the technical field of construction engineering, and in particular relates to a method for connecting prefabricated stairs. Background technique [0002] The construction of traditional cast-in-place stairs takes too long, and the construction of stairs is undoubtedly one of the most complicated, most challenging and time-consuming parts of the work. The construction of traditional cast-in-place stairs requires measuring and setting out, supporting the bottom formwork of the stairs, the bottom formwork of the rest platform, binding the horizontal and vertical stress reinforcement bars at the bottom of the stair slab, supporting the side formwork of the stair, binding the negative reinforcement, the upper steel bar of the stair slab, and supporting Stepping formwork, concealed acceptance, pouring concrete, maintenance, formwork removal, and continuous watering and maintenance are a series of steps. The process is very complicate...

AI Technical Summary

Problems solved by technology

[0002] The construction of traditional cast-in-place stairs takes too long, and the construction of stairs is undoubtedly one of the most complicated, most challenging and time-consuming parts of the work.

The construction of traditional cast-in-place stairs requires measuring and setting out, supporting the bottom formwork of the stairs, the bottom formwork of the rest platform, binding the horizontal and vertical stress reinforcement bars at the bottom of the stair slab, supporting the side formwork of the stair, binding the negative reinforcement, the upper steel bar of the stair slab, and supporting Stepping formwork, concealed acceptance, pouring concrete, maintenance, formwork removal, and continuous watering and maintenance are a series of steps. The process is very complicated. It not only consumes a lot of formwork, but also the technology is difficult to control, which often results in the construction progress of each floor after the main building is completed. Problems in stair construction

[0003] In the current stair construction process of prefabricated buildings, the junction between the stair and the floor is fixed by cast-in-place, and the steel bars are left at the end of the stair to the platform slab, and then cast in-situ together with the platform, so that it can be carried out in a small construction space. The cast-in-place work is extremely inconvenient, the construction progress is slow, there are many supporting rods, and the supporting points are restricted by the construction, interspersed with the cross process; secondly, the stair platform slab of the public construction project is in the middle of the floor, which affects the overall pouring of the vertical components in this area , which has a lot of influence on the efficiency of prefabricated buildings

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