CN108360754A - A kind of method and device controlling shear wall and thickness of concrete cover - Google Patents

Abstract

The invention discloses a method and a device for controlling the thickness of a shear wall and a concrete protective layer. In the invention, a piece of angle steel is respectively welded at both ends of a supporting steel bar to form a set of template positioning devices; the total length L of the template positioning device is the same as that of the shear wall The thickness B of the formwork positioning device is equal; then a group of formwork positioning devices are welded to the steel mesh in the shear wall. When welding, ensure that the distance between the outer plane of the angle steel at both ends of the formwork positioning device and the outermost side of the steel mesh should be equal to the concrete cover thickness b required by the design ; Then the two templates are attached to the outer plane of the angle steel on the template positioning device and the template is fixed with the pull screw. The invention controls the thickness of the shear wall through the length of the formwork positioning device, and controls the thickness of the concrete protective layer through the distance between the welding spot of the formwork positioning device and the outer plane of the positioning angle steel. Therefore, the position of the reinforcement mesh in the shear wall is accurately controlled, the thickness of the shear wall and the thickness of the concrete protective layer are ensured, and the pouring quality and construction efficiency of the shear wall are improved.

Description

Method and device for controlling thickness of shear wall and concrete protective layer

technical field

The invention relates to a method and a device for controlling the thickness of a shear wall and a concrete protective layer, belonging to the technical field of shear wall construction.

Background technique

During the construction of the frame shear wall structure, the steel bars in the shear wall are the skeleton of the entire shear wall. Therefore, the distance between the outermost reinforcement in the shear wall and the shear wall surface (concrete protective layer) and the thickness of the shear wall are directly related to the safety of the building structure. Due to the complex structure of steel bars in the frame shear wall, it brings a lot of inconvenience to the steel bar installation project.

Contents of the invention

The object of the present invention is to provide a method and device for controlling the thickness of the shear wall and the concrete cover, so as to improve the accuracy of steel bar positioning and wall thickness control in the construction process of the shear wall, thereby overcoming the deficiencies in the prior art.

Technical scheme of the present invention is realized like this:

A method for controlling the thickness of a shear wall and a concrete cover of the present invention, the method is to weld a piece of angle steel at both ends of the supporting steel bar to make a group of formwork positioning devices; the total length L of the formwork positioning device and the thickness of the shear wall B is equal; then weld a group of formwork positioning devices to the steel mesh in the shear wall. When welding, it should be ensured that the distance between the outer plane of the angle steel at both ends of the formwork positioning device and the outermost side of the steel mesh should be equal to the thickness b of the concrete cover required by the design; Then the two templates are attached to the outer plane of the angle steel on the template positioning device and the templates are fixed by the pull screw.

In the aforementioned method, the quantity of the set of template positioning devices is determined according to the area of the shear wall and the thickness of the template, and is evenly distributed in the shear wall.

In the aforementioned method, the reinforcement mesh includes longitudinal reinforcement and horizontal reinforcement, and the reinforcement of the template positioning device is welded to the horizontal reinforcement.

In the aforementioned method, the paired pull screws fix the template near the template positioning device.

A template positioning device of the present invention used in the above method includes supporting steel bars, angle steels are welded at both ends of the supporting steel bars, and the two ends of the supporting steel bars are welded vertically to the inner plane of the angle steels.

In the aforementioned template positioning device, the positioning angle steel adopts a 50×50×3 mm angle steel with a length of 50-80 mm; the supporting steel bar adopts a steel bar with a diameter of 12 mm.

Due to the adoption of the above technical scheme, compared with the prior art, the present invention controls the thickness of the shear wall through the length of the template positioning device, and controls the concrete protection through the distance between the welding point of the template positioning device and the outer plane of the positioning angle steel. layer thickness. Therefore, the position of the reinforcement mesh in the shear wall is accurately controlled, the thickness of the shear wall and the thickness of the concrete protective layer are ensured, and the pouring quality of the shear wall is improved. The method of the invention is easy to operate, the template positioning device used is simple to manufacture, and the construction efficiency can be improved.

Description of drawings

Fig. 1 is a schematic diagram of the method of the present invention;

Figure 2 is an axonometric view of Figure 1;

Fig. 3 is the schematic diagram of the used template positioning device of the present invention;

FIG. 4 is an isometric view of FIG. 3 .

In the figure: 1-supporting steel bar, 2-positioning angle steel, 3-formwork positioning device, 4-reinforcing mesh, 5-formwork, 6-tie-tie screw, 7-longitudinal steel bar, 8-horizontal steel bar.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments, but not as any limitation to the present invention.

A method for controlling the thickness of a shear wall and a concrete cover of the present invention, as shown in Figure 1 and Figure 2: the method is to weld a positioning angle steel 2 at both ends of the supporting steel bar 1 to make a group of formwork positioning devices 3; The total length L of the formwork positioning device 3 is equal to the thickness B of the shear wall; then a set of formwork positioning device 3 is welded to the steel mesh 4 in the shear wall, and the angle steel 2 at both ends of the formwork positioning device 3 should be ensured during welding. The distance between the outer plane of the outer plane and the outermost side of the steel mesh 4 should be equal to the thickness b of the concrete cover required by the design; . The quantity of a group of template positioning devices 3 is determined according to the area of the shear wall and the thickness of the template 5, and is evenly distributed in the shear wall. The reinforcement mesh 4 includes a longitudinal reinforcement 7 and a horizontal reinforcement 8, and the reinforcement 1 of the template positioning device 3 is welded to the horizontal reinforcement 8. The template 5 is fixed near the template positioning device 3 by the pull screw 6 .

A kind of template positioning device of the present invention that is used for above-mentioned method, as shown in Figure 3 and Figure 4, this device comprises support steel bar 1, is welded with angle steel 2 at the two ends of support steel bar 1, and support steel bar 1 two ends and positioning The inner plane of angle steel 2 is welded vertically. The positioning angle steel 2 adopts a 50×50×3mm angle steel with a length of 50-80mm; the supporting steel bar 1 adopts a steel bar with a diameter of 12mm.

Example

In this example, the template is positioned by the template positioning device shown in Fig. 3 and Fig. 4 . The formwork positioning device 3 includes a supporting steel bar 1 with a diameter of 12 mm. A positioning angle steel 2 of 50×50×3 mm is welded at both ends of the supporting steel bar 1 respectively. The total length L of the template positioning device 3 should be equal to the thickness of the shear wall. The thickness of the shear wall is controlled by the template positioning device 3 . When building the formwork 5 of the shear wall, a group of formwork positioning devices 3 are first welded on the steel mesh 4 in the shear wall, and the formwork positioning device 3 should be perpendicular to the shear wall surface during welding. The supporting steel bars 1 of the template positioning device 3 are welded to the horizontal steel bars 8 of the steel mesh 4 in the shear wall. During welding, the distance between the outer plane of the positioning angle steel 2 and the edge of the outermost steel bar of the steel mesh 4 is equal to the concrete required by the design. Protective layer thickness b. When welding the formwork positioning device 3, multiple formwork positioning devices 3 can be evenly distributed in the shear wall, and ensure that the outer planes of the positioning angle steel 2 of the multiple formwork positioning devices 3 are on the same plane. Then the two templates 5 are fixed by the pull screw 6 . The position of the pulling screw 6 should be as close as possible to the template positioning device 3, so as to prevent the template from being deformed. Concrete pouring can be carried out after the template 5 is fixed. The specific pouring process can be carried out according to the pouring specification.

Claims (6)

1. A method for controlling the thickness of a shear wall and a concrete cover, is characterized in that: the method is to weld a piece of angle steel respectively at the two ends of the support reinforcement to make a group of formwork positioning devices; the total length L of the formwork positioning device and the shear force The thickness B of the wall is equal; and then a group of formwork positioning devices are welded to the steel mesh in the shear wall. When welding, it should be ensured that the distance between the outer plane of the angle steel at both ends of the formwork positioning device and the outermost side of the steel mesh should be equal to the concrete protective layer required by the design Thickness b; then the two formworks are attached to the outer plane of the angle steel on the formwork positioning device and the formwork is fixed with a pull screw. 2. the method for controlling shear wall and concrete cover thickness according to claim 1, is characterized in that: the quantity of described one group of formwork positioning device is determined according to the area of shear wall and the thickness of formwork, and in shear wall evenly distributed within. 3. The method for controlling the thickness of the shear wall and the concrete cover according to claim 1, characterized in that: the reinforcement mesh includes longitudinal reinforcement and horizontal reinforcement, and the reinforcement of the template positioning device is welded to the horizontal reinforcement. 4. The method for controlling the thickness of the shear wall and the concrete cover according to claim 1, characterized in that the formwork is fixed near the formwork positioning device by the paired tension screw. 5. A template positioning device for the method of any one of claims 1 to 4, comprising a supporting steel bar (1), characterized in that: angle steel (2) is welded at both ends of the supporting steel bar (1), And the two ends of the supporting steel bar (1) are vertically welded to the inner plane of the angle steel (2). 6. The template positioning device according to claim 5, characterized in that: the angle steel (2) adopts a 50×50×3mm angle steel with a length of 50-80mm; the supporting steel bar (1) adopts a steel bar with a diameter of 12mm.