Open type spiral staircase constructed by casting fair-faced concrete folded plates in situ and construction method of spiral staircase

Abstract

The invention discloses an open type spiral staircase constructed by casting fair-faced concrete folded plates in situ. The open type spiral staircase is characterized in that an upright column with the diameter of 800 mm is arranged in the middle of the spiral staircase, spiral stairs are arranged around the upright column, the height of the first floor of spiral stair thread is 160 mm, the height of each of the second floor and the third floor of spiral stair thread is 161.53 mm, the length of each floor is 2,000 mm, the sector angle of the surface of a sector tread is 12 degrees, the outer side width of the sector tread is 502.65 mm, and the spiral stairs and the upright column are constructed by casting fair-faced concrete. The invention further discloses a construction method of the open type spiral staircase constructed by casting the fair-faced concrete folded plates in situ. According to the method, smooth multi-layer plastic covered plates for formworks contacted with fair-faced concrete are adopted, and a multi-layer plate is further added to the outer layer of each multi-layer plastic covered plate. The open type spiral staircase and the construction method have the following benefits: the stair surfaces do not need any special treatment, the appearance is attractive, simple and graceful, the structure is light and firm, the large-diameter column is arranged in the middle, the staircase has larger length and larger width as well as appropriate height, and stair climbing is easy; the staircase is formed by casting the fair-faced concrete.

Description

technical field [0001] The invention relates to the technical field of building structures, and belongs to an open cast-in-place fair-faced concrete folding-plate spiral staircase and a manufacturing method thereof. Background technique [0002] At present, the existing spiral stairs are either welded by steel plates, the diameter of the middle column is relatively small, and it feels laborious to rotate up the stairs, the length of the stairs is short, the width of the stairs is also narrow, and the height of the stairs is not suitable; For those made of concrete, after the construction is completed, a layer of building surface or decorative surface should be made on the outside, and after the construction of fair-faced concrete is completed, the surface does not require any special treatment, and the appearance is exquisite, simple, elegant and solemn, reflecting modern technology. Beautiful, light and transparent, light and firm structure. [0003] The spiral staircase w...

AI Technical Summary

Problems solved by technology

[0003] The spiral staircase welded by the steel plate gives people a feeling of incompatibility with the building, and it is not visually simple, elegant, and solemn; and when people walk on the steel staircase, they will make noise. In order to prevent the steel plate from rusting, it is necessary to clean it regularly maintain

Although the non-fair-faced concrete has a good appearance after decoration, it is quite different from the architectural style of this project; and the appearance of the decoration needs to be maintained regularly. If this decoration style becomes out of fashion, the spiral staircase will become a part of the building. big stain

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