Template device for reserving concrete stair construction crack

Abstract

A template device for reserving a concrete stair construction crack includes a bottom die (1), lateral dies (2), and a sealing plate (3); the bottom die (1) is supported on secondary columns (6); the secondary columns (6) are supported on a primary column (7); a reserved plate crack (8) with the width of 10-12 cm is retained in a twice concrete construction crack position of the bottom die (1); the sealing plate (3) seals first poured concrete at the construction crack position in a manner of being perpendicular to the bottom die (1), and reserved gaps (4) are formed; stair longitudinal steel bars (5) pass through the reserved gaps (4); and the reserved gaps are formed according to the size and spacing of the stair longitudinal steel bars (5). The sealing plate is arranged on the construction crack position, the construction crack concrete surface is linear and straight; rubbish and sundries generated during construction can be discharged from the reserved plate crack, and cleaning work before concrete pouring is reduced; and a safe mesh fabric is hanged under the reserved plate crack, which can collect the rubbish and the sundries, and will not cause environment pollution.

Description

technical field [0001] The invention relates to a stair formwork device in building engineering construction, in particular to a formwork device for retaining construction joints of concrete stairs. Background technique [0002] Cast-in-situ reinforced concrete stairs are the main components of most buildings at present, and the construction quality of the two concrete joints is the main focus of quality acceptance. The stair construction joints are usually left at the place where the shear force is small, that is, about 1 / 3 of each stair run. At present, in order to ensure that the slope of the two concrete of the stair is consistent, the stair formwork is supported once, the bottom form is penetrated, and the concrete is poured to the stair height of 1 / 3 Stop, after the concrete has formed strength, the elastic wire chisels away the excess concrete at the construction joints, and pours the second concrete after cleaning. [0003] There are many deficiencies in this kind ...

AI Technical Summary

Problems solved by technology

[0003] There are many deficiencies in this kind of stair formwork. First, the joints are usually not straight, and the garbage at the joints is easy to clean up, which affects the appearance at the slightest, and affects the structural force at the worst. Second, the garbage falls to the next step when the construction joints are cleaned. layer, which does not meet the requirements of the standard chemical site; third, the workload of chiseling concrete and cleaning up garbage at joints is heavy, which affects work efficiency

[0004] Therefore there are above-mentioned inconveniences and problems in the known stair formwork setting mode

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