Stress spreader for preventing cracks

Abstract

The present invention relates to a stress distribution device for preventing cracks occurring at a corner formed by installing a window in a concrete building. In a stress distribution device, which is embedded in the placed concrete from a corner of an opening part, which is provided in a wall surface to form a window or a door when constructing a new building, so as to prevent the generation ofcracks from the corner, the stress distribution device comprising: a support protrusion piece coming into contact with the corner of a form; a curved piece having a semicircular shape extending from the support protrusion piece to both sides and having a through hole, through which the concrete can be poured; and ground pieces integrally extended from both end surfaces of the curved piece and folded so as to come into contact with the side surface of the form, wherein such the curved pieces have fitting protrusions and insertion groove parts at the same positions on the upper and lower surfaces so as to be fitted and fastened to each other.

Description

technical field [0001] The present invention relates to a stress dispersing device for preventing cracks generated from the edges of openings for installing windows, doors, etc., when new concrete buildings are built. Background technique [0002] Generally speaking, if figure 1 As shown, on the walls 1 of buildings such as independent houses, apartments, villas, buildings, etc., there are openings 1a of the size suitable for the purpose such as doors, windows 2, etc. After the fixed frame is installed on the inner peripheral surface of the above-mentioned opening, the Doors or windows are installed on the above-mentioned fixed frame for use. [0003] If the wall of the above-mentioned building using concrete is only equipped with an opening, there is a problem that cracks 3 will be generated on the concrete wall 2 starting from the edge of the opening. Therefore, in order to prevent the above cracks, as figure 2 As shown, reinforcing bars 12 are embedded in the openings ...

AI Technical Summary

Problems solved by technology

[0011] However, in the stress dispersing plate of the above-mentioned prior art, the shear stress generated from the edge part directly collides with the stress dispersing plate due to the vibration and impact generated by the building, and cracks are generated after the shear stress is transmitted to the stress dispersing plate due to the collision impact, so that it cannot be effectively eliminate the problem

[0012] In addition, in the prior art stress dispersing plate, since the concrete is poured in a state where it is located at the edge portion, the stress dispersing plate is washed away by the poured concrete when pouring the concrete. The stress dispersing plate is installed on the steel bar and tied with iron wires, thus reducing the working efficiency

Images