Telescopic steel formwork

Abstract

The invention provides a stretchable steel formwork. The stretchable steel formwork is particularly suitable for construction of a construction concrete formwork with the circular variable cross section. The stretchable steel formwork is roughly rectangular, and comprises a face plate and stiffening ribs, and the stiffening ribs are distributed on the outer side of the face plate in a crisscross mode to enhance the rigidity of the face plate. The face plate is rectangular, a stretchable adjusting edge a certain distance away from the face plate is arranged on one long edge of the face plate, and long-strip holes parallel to the short edges of the face plate are formed in the stretchable adjusting edge. A socket key is arranged on one of the two short edges of the face plate, and a socket groove is formed in the other short edge of the face plate. When the stretchable steel formworks are subjected to annular lap joint, the adjacent stretchable steel formworks are fixed through split bolts, and the stretchable adjusting edges are located on the inner sides; as the long-strip holes are formed, the lap joint length of the two stretchable steel formworks is calculated and determined according to the change rate of the cross section of a circular building, and the appearance quality of concrete is improved; meanwhile, the stretchable steel formwork is high in standardization and suitable for industrial production, the construction progress can be improved, and therefore the construction cost can be reduced.

Description

technical field [0001] The invention belongs to the field of building construction, in particular to a telescopic steel formwork used for casting concrete for a circular variable-section building structure. Background technique [0002] In building construction, some buildings (structures) with circular variable cross-sections (hereinafter referred to as buildings) are often encountered. When constructing structural concrete formwork, the traditional method is to use a small number of wedge-shaped formwork to achieve circular cross-section changes. the goal of. However, the traditional wedge-shaped formwork can only be made by hand on site, the production process is complicated, and it is not suitable for mass production. Therefore, the production efficiency of the wedge-shaped formwork is low, and the construction site is occupied; the installation of the wedge-shaped formwork is also complicated. At the same time, the wedge-shaped formwork is not easy to be connected and ...

AI Technical Summary

Problems solved by technology

However, the traditional wedge-shaped formwork can only be made by hand on site, the production process is complicated, and it is not suitable for mass production. Therefore, the production efficiency of the wedge-shaped formwork is low, and it also occupies the construction site; the installation of the wedge-shaped formwork is also complicated.

At the same time, the wedge-shaped formwork is not easy to be connected and reinforced with its adjacent formwork, resulting in uneven and tight joints of the formwork, easy to run out of the concrete during the construction process, the concrete surface will be misaligned and other uneven phenomena, and the wedge-shaped joint formed on the concrete surface is also difficult. Irregular, unsightly

In short, the use of wedge-shaped formwork is labor-intensive and the concrete appearance is not ideal

Images