Reinforcement covering layer thickness positioner and use method as well as application thereof

Abstract

The invention belongs to the technical field of building members, and relates to a component for controlling thickness of a reinforcement covering layer in reinforced concrete structure building members and a use method as well as application of the component. The component comprises a clamping mechanism which is formed by bending and processing a steel wire, wherein the clamping mechanism consists of a clamping mouth, a clamping throat, a clamping cavity and an elastic cavity; and the size of the elastic cavity is less than the diameter of reinforcement before the reinforcement is clamped into the elastic cavity, and the size of the elastic cavity is the same as the diameter of the reinforcement after the reinforcement is clamped into the elastic cavity. The thickness of the reinforcement covering layer can be accurately controlled; the component is suitable for fixing the position of the reinforcement in the members and an embedded pipeline; hoop in two directions at the corner of the hoop can be simultaneously positioned; relative position between two layers of reinforcements and the thickness of the reinforcement covering layer can be simultaneously and accurately controlled; and the component has the advantages of simple, light and convenient structure, simple processes, strong anti-interference property, accuracy in positioning, standard production, high accuracy, high working efficiency, firmness in clamping, low probability of falling and displacement, high stability, reliable performance, wide application range, good construction effect, high guarantee rate, high rigidity and strength performance, environmental friendliness and economy.

Description

technical field [0001] The invention belongs to the technical field of building components, and in particular relates to a component for controlling the thickness of a steel bar protective layer in a reinforced concrete structure building component and its use method and application. Background technique [0002] At present, reinforced concrete structure is the dominant building structure form, the bond between steel and concrete and the similar temperature effect make steel and concrete work together; the main function of concrete cover is to maintain the bond between stressed steel and concrete Therefore, it is very important to ensure that the thickness of the protective layer of steel bars meets the design requirements during construction to ensure the bearing capacity and durability of reinforced concrete members. For horizontal steel bars, the protective layer thickness of steel bars can be ensured by supporting pads in formwork; for vertical steel bars in walls, colum...

AI Technical Summary

Problems solved by technology

At present, the commonly used method is to pre-embed the iron wire in the cement mortar block or penetrate the iron wire after the cement mortar block is formed, and then bind the iron wire to the steel bar. This method not only has many construction procedures, low work efficiency, and is prone to The position of the bound mortar block is not accurate, the binding is not firm, and there will be displacement, rotation, or even falling off, thus losing the effect of controlling the thickness of the protective layer; another method is to use plastic rings. The defect of this method is: plastic When the strength of the plastic is low, it is easy to cause deformation of the plastic ring; when the strength of the plastic is high, it lacks elasticity and is not easy to be stuck into the steel bar; and the amount of elastic film and thermal expansion coefficient of the plastic are different from that of the concrete, and the bonding between the plastic and the post-cast concrete Poor performance, it is easy to cause the intrusion of corrosive medium, resulting in corrosion of steel bars in the plastic ring

In the construction of shear walls, in order to ensure the accuracy of the spacing and row spacing of the vertical wall reinforcement and the thickness of the wall protective layer, ladder reinforcement is usually made as the reinforcement mesh limit, and the horizontal reinforcement of the ladder is made of reinforcement, which needs to be matched with the vertical reinforcement. Binding and pouring together with concrete, the workload is heavy and the steel bars are wasted

In the construction of tunnel engineering, the tunnel lining concrete is mostly circular double-layer steel mesh, and the steel bars are mostly bent with the transverse arc of the tunnel during the binding and installation stages. , easy to fall off; and the thickness of the protective layer is controlled by the formwork support on the trolley to the steel bars welded on the steel mesh. This method consumes a lot of steel bars, and the control effect of the protective layer thickness is not good

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