Outside frame column back arris, back arris system and back arris system construction method

Abstract

The invention discloses an outside frame column back arris. The outside frame column back arris comprises a body constituted by two square through pipes, first connecting components and second connecting components. A first gap is formed between the two square through holes, a first connecting hole is formed in each first connecting component, and a second connecting hole is formed in each second connecting component. The axes of the first connecting holes and the second connecting holes form 45 degrees with the square through pipes correspondingly, and the axes of the first connecting hole are perpendicular to those of the second connecting holes. A back arris system comprises the four outside frame column back arrises and four obliquely-pulling screws, each obliquely-pulling screw penetrates through the corresponding first connecting component and the corresponding second connecting component, and the two ends of each obliquely-pulling screw are fixed through connecting nuts. A back arris system construction method comprises the following steps that steel bars are bound, a steel bar cage is formed after profile steel is welded; aluminum formworks are assembled; the outside frame column back arrises are assembled; and with shrinkage of the cross section of a wall column, the positions of the obliquely-pulling screws are adjusted. According to the outside frame column back arris, the back arris system and the back arris system construction method, oppositely-pulling screws do not need to be arranged in the columns or the steel bar cage of a wall body in a penetrating mode.

Description

technical field [0001] The invention relates to an outer frame column back flute in the field of construction engineering, and also includes a back flute system composed of the outer frame column back flute, and further includes a back flute system construction method. Background technique [0002] The formwork commonly used in concrete pouring in the construction industry includes steel formwork, wooden formwork, and plastic formwork. Lightweight, but its strength is low, not waterproof, prone to mildew and rot, low reuse rate, consumes wood resources, and is not conducive to environmental protection; plastic formwork is poor in rigidity, easily deformed, and high in cost. [0003] The emergence of aluminum formwork solves the above problems. In order to stabilize the overall structure of the existing aluminum formwork, a back corrugation will be provided on the aluminum formwork. The setting of the back corrugation can effectively prevent the aluminum formwork from burstin...

AI Technical Summary

Problems solved by technology

[0002] The formwork commonly used in concrete pouring in the construction industry includes steel formwork, wooden formwork, and plastic formwork. Lightweight, but its strength is low, not waterproof, easy to mildew and rot, low reuse rate, needs to consume wood resources, and is not conducive to environmental protection; the rigidity of plastic formwork is poor, easily deformed, and the cost is high

[0003] The emergence of aluminum formwork solves the above problems. In order to stabilize the overall structure of the existing aluminum formwork, a back corrugation will be provided on the aluminum formwork. The setting of the back corrugation can effectively prevent the aluminum formwork from bursting during the process of pouring concrete. However, due to the unreasonable design of the back flute, the aluminum formwork is prone to arching and the service life is short. The traditional aluminum formwork reinforced back flute cannot be used universally because of the corner connection welding, and the deformation of the welded back flute is easy to cause the formwork to form. Explosion point problem on concrete surface

[0004] In addition, most of the existing back flutes cannot be used in combination. The back flutes are mostly one-to-one processing relative to the formwork. Every time new concrete is poured, a new corresponding back flute needs to be prepared. The materials used cannot be reused. It is very wasteful of materials and produces more construction waste

In addition, for structures with large cross-sections of columns, generally, tension screws are added inside the column reinforcement cage to strengthen the strength of the back corrugation. However, the internal reinforcement of the column is relatively dense, and there are section steels, so it is not easy to use tension screws for reinforcement.

Since the split screw is welded to the section steel, it is impossible to take out the split screw after pouring concrete, and it will take a lot of manual removal of the screw in the later stage; there are many cross-sectional shrinkages in the column, resulting in the need for multiple cuts on the back of the column.

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