Inner Hole Formwork for Concrete Cup Foundation of Steel Structure Building

Abstract

The invention discloses an inner hole formwork frame of a steel structure building concrete cup foundation. The inner hole formwork frame comprises a cup mouth inner formwork and a supporting frame; the cup mouth inner formwork comprises a front formwork, a rear formwork, a left formwork, a right formwork and a bottom formwork, and the front formwork, the rear formwork, the left formwork and the right formwork are respectively of a trapezoid shape with the upper part larger than the lower part and are respectively provided with a sliding way; the supporting frame comprises four vertical columns, a plurality of cross arms and a plurality of ejection wheels, wherein the vertical columns and the cross arms are welded together, the ejection wheels are arranged on the cross arms, and the supporting frame is of a trapezoid shape with the upper part larger than the lower part. The inner hole formwork frame has the beneficial effects that the inner formwork can be fixed easily, conveniently, quickly and stably, the phenomena that the formwork is shifted and swelled and concrete is vibrated incompactly are avoided in the pouring process of concrete, cup mouths are formed regularly, the cup mouth inner formwork can be disassembled easily, post processing is avoided, and the time and the labor can be saved. The inner hole formwork frame cannot be damaged easily when the inner formwork is disassembled and can be repeatedly used, and therefore the environment can be protected and rubbish can be avoided.

Description

technical field [0001] The invention relates to a formwork in construction engineering, in particular to a formwork with inner holes in a concrete cup-shaped foundation of a steel structure building. Background technique [0002] A concrete foundation of a steel structure building is formed by pouring concrete, and there is a cup-shaped square opening (such as figure 1 , figure 2 ), which is called the concrete cup-shaped foundation of a steel structure building. After the steel column is inserted into the cup-shaped square opening and positioned, it is filled with concrete and fixed. At present, in the construction of concrete cup-shaped foundations of steel structures, wooden formwork is usually used, supported by wooden squares and steel pipes to form a cup-shaped inner mold. Due to the small size of the cup mouth (about 600×600mm), the depth is relatively large (about 1250mm) , resulting in difficult and unstable fixation of the inner mold. When pouring concrete, it i...

AI Technical Summary

Problems solved by technology

At present, in the construction of concrete cup-shaped foundations of steel structures, wooden formwork is usually used, supported by wooden squares and steel pipes to form a cup-shaped inner mold. Due to the small size of the cup mouth (about 600×600mm), the depth is relatively large (about 1250mm) , resulting in difficult and unstable fixation of the inner mold. During concrete pouring, it is easy to run out of the mold, expand the mold, and the concrete is not compacted due to vibration. and laborious

When the inner mold is removed, it is easily damaged and cannot be reused, resulting in waste

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