JP3042600U - Reinforcing bar strips for planar reinforced concrete structures - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: To find a rebar strip which can be freely used and is simple, and which can be mass-produced, to prepare a stock plan using a small number of basic type rebar strips, And find a simple way. SOLUTION: In order to make a standard reinforcement member that can be part of a stock plan, the rebar strips have a width of at least 1000 and a maximum of 1200 mm and a width of 4 mm.
Up to 7 rebars (2) having a ribbed surface and a diameter of 6-16 mm, having a length of ~ 9 m and spaced 200 mm from each other, and 400-1 to each other
The positioning wire (3 ') adjacent to the free end of the reinforcing bar (2) is composed of a plurality of positioning wires (3, 3') arranged at intervals of 200 mm.
It has a distance of 00 mm.

Description

[Detailed description of the invention]

[0001]

[Industrial applications]

 The present invention is directed to a plurality of rebars arranged in parallel with each other and spaced from each other in a plane, and a plurality of positionings which are perpendicular to the rebars and welded to the rebars and which are formed to be thinner than the rebars. Reinforcement strip for planar reinforced concrete structures consisting of wire rods.

[0002]

[Prior art]

 Reinforcement of sheet-like reinforced concrete structures, using reinforcing bars that are laid individually, prefabricated reinforcement mats, so-called stock mats (Lagermatte), which must be fitted appropriately, ie must be cut. Must be used) or with a reinforcing mat, so-called Listenmatte, which is manufactured to be dimensionally adapted to the static and spatial requirements. The disadvantage of reinforcement by reinforcing bars is that the work of laying the reinforcing bars in both directions and tying the reinforcing bars by hand at the laying points requires a great deal of work. Stock mats must be cut, which results in considerable material loss. The disadvantage of wrist mats is that they are not ready for stockpiling, as many different types must be prefabricated with a few minutes of storage to cover all possible reinforcement issues. That is not the case.

Further, a plurality of reinforcing bars extending in parallel in one plane are welded by using a holding bar which is perpendicular to the reinforcing bars and which is thinner than the reinforcing bars. It is known to form a reinforcing member of In this case, the distance between the reinforcing bars is 15, 20 or 30 cm, their diameter is 8 to 20 mm, and the number of reinforcing bars in this reinforcing member is 4, 8 or 6 respectively, depending on the mutual distance. , Reinforcing bars of different diameters may be used in the reinforcement. The distance between the holding bars is 1.2 m, and the distance from the holding bars at the ends to the reinforcing bar ends is at least 60 and a maximum of 120 cm. The length of the reinforcing member can be selected within the range of 2.4 to 14 m. With this reinforcement member, a large number of reinforcement members with different structures must be produced, which makes inventory control virtually impossible. Another drawback is that the reinforcing bars project significantly laterally, which inevitably results in bending of the reinforcing bars during transport and handling, especially if they have a relatively small diameter. Large and constant spacings between the holding bars are also inconvenient, as they provide an unstable product during handling and transportation and also the division of long reinforcements into shape-stable sub-members at the installation site. Because it interferes.

It is known from Austrian Patent No. 346046 to reinforce cross-reinforced cover plates by means of at least two mutually mutually combinable partial reinforcing members, which are Each has a group of bars that extend in one direction and are consolidated and flexurally stiff. The partial reinforcements are laid one on top of the other in a cross-like manner, thus forming a cross-sectional reinforcement of the bars of any size and of any steel cross section, intersecting one another. The partial reinforcing member is composed of a plurality of reinforcing bars having the same length, and the reinforcing bars are unified into bending rigidity by two holding bars. The partial reinforcement members are constructed on the basis of a grid with certain modules, in which case the spacing between the reinforcing bars is in the modules, the length of the partial reinforcement members is several times the module length and the holding bar length, That is, the width of the partial reinforcing member is preferably several times that of the module. The distance from the end of the rebar to the retaining bar must be at least twice as large as the bond length of the rebar by a module (zumindest die doppelte Haftlaenge des Bewehrungsstabes vermehrt um den Modul). In order to be able to assemble the members into unitary shapes, the steel cross-section, especially of the reinforcing bars, must also be divided in a predetermined manner according to the length dimension of the members. This partial reinforcement member has the drawback that its assembly must be carried out with a certain grid size, its manufacture is extremely complicated and cumbersome. Moreover, a great variety of types are required to fulfill the reinforcement problem, and quick and flexible adaptation to changing installation plans at the building site is not possible.

A reinforcing unit for reinforcing sheet strips is known from Austrian patent 275111. The reinforcing unit has a width of 0.2 to 0.7 m and has at least 3, and at most 4, vertical wires, which ensure the shape stability of the reinforcing unit in the transverse direction. They are connected by a plurality of narrower wire rods that extend in the direction of. The disadvantage of this reinforcement unit is that it has a limited number of longitudinal wires and therefore only relatively narrow reinforcement strips can be produced. Furthermore, neither the arrangement of horizontal wires nor the dimensions of the reinforcing bars are described in detail.

[0006]

[Problems to be solved by the device]

 The task of the present invention is to find a freely reusable and simple rebar strip, which can be mass-produced and creates a stock plan (Lagerprogramme) using a small number of basic types of rebar strips. , And to find a simple method, and to enable the reinforcement of sheet-like reinforced concrete structures with little effort, and yet to be reinforced with reinforcement, a reinforcement mat configured as a stock mat and a wrist mat, In addition, the disadvantages of the known strip-shaped reinforcements must be avoided.

[0007]

[Means for Solving the Problems]

 The above problem is solved in a rebar strip of the type described at the outset according to the invention by a combination of the following features: a rebar strip for forming a standard reinforcing element of a stock plan has a width of at least 1000. , With a maximum of 1200 mm and a length of 4-9 m, and with a maximum of 7 ribs on the surface, spaced 200 mm apart, with a diameter in the range of 6-16 mm, It is formed by a plurality of positioning wire rods which are arranged at an interval of 400 to 1200 mm, and the positioning wire rod adjacent to the free end of the reinforcing bar has a distance of 200 to 500 mm from the end of the reinforcing bar. According to an advantageous embodiment of the invention, the rebar is made from hot-rolled or cold-deformed bar steel.

Advantageously, the positioning wire ends in alignment with the rebar.

[0009]

[Effect of the invention]

 The invention guarantees that the reinforced strips can be fitted to the dimensions of reinforced concrete structural parts to be reinforced with little cutting and with little loss. The rebar strips are stiff enough and easy to handle. Since the width is 1000 to 1200 mm, the storage area of this reinforcing bar strip is small. As a result of the above-mentioned protrusions of the reinforcing bar, it is possible without problems to push the reinforcing bar strip along the supporting surface into the reinforcing member or the like, and it is necessary to separate the positioning wire at the end of the reinforcing bar strip during installation. Absent.

The reinforcing bar strip according to the invention is used to form a standard reinforcing member of a stock plan, in which case only one basic type of reinforcing bar strip per diameter of the reinforcing bar is produced in large quantities in various lengths. This reinforcing bar strip can therefore be used in an optimal way to fulfill all the reinforcement problems, and as a result only a few basic types of reinforcing bar strip according to the invention are required to have a large number of strip-shaped reinforcing elements which were previously necessary. , Stock or wrist mat can be substituted. When creating a reinforcement plan, the reinforcing bar strip according to the invention can be treated like one thick reinforcing bar.

Compared with the conventional production of strip-shaped reinforcing members, stocks or wrist mats, the rebar strips can be produced particularly easily and economically, since they are already produced during the production of hot-rolled rebar. , Directly following the cooling bed of the rolling mill, the individual rebars can be cut to a length several times the final length of the rebar strips and bundled into bundles of the same length. At the rebar strip manufacturing plant, the rebar is removed from the bundle and cut into the corresponding standard length of rebar strip. There is no need for the time-consuming and tedious cutting work required in conventional stock mats, either in the laying place or for storage and storage.

For the production of rebar strips, the rebar is welded to the positioning wire using a commercially available grid welder. The standard production width of this grid welder is optimally utilized with a rebar strip width of 1.2 m, and one rebar strip at the same time can produce two strips of rebar particularly economically.

Further, the rebar strip width of 1.2 m is 2. It has the advantage that the standard loading area of a 4 m truck can be optimally utilized.

Compared to wrist mats, the rebar strip according to the invention has the advantage that it can be handled with one labor or up to two labor depending on its weight and length and can be transported hochkant. . Another advantage over wrist mats is the ease with which various bi-directional reinforcements can be selected in a reinforced concrete structure to be cross-reinforced. Compared to conventional reinforcement mats, whether stock mats or wrist mats, the rebar strips of the present invention do not cause lap and lay-up of steel at the time of laying, and there is no static stacking due to the multiple layers in the butt area. It has the advantage that no loss of power occurs.

[0015]

[Embodiment of the invention]

 Other features and advantages of the present invention will be described in detail with reference to the accompanying drawings with reference to the following embodiments.

The rebar strips 1 shown in FIGS. 1 and 2 have rebars 2 arranged in one plane parallel to each other and at a distance of 200 mm from one another, the rebars having a plurality of laterally extending positionings. They are connected to each other by wires 3 and 3 '. The rebar strip 1 has a width of 1200 mm. Within the scope of the invention, the number of rebars 2 can be 6, and rebar strips with a width of 1000 mm can also be produced.

The diameter of the reinforcing bar 2 is in the range of 6 to 16 mm, depending on the static requirements for the reinforcing bar strip 1. The classification based on the diameter of the reinforcing bar strip 2 is performed in 1 mm increments (Schritte) in the range of 6 to 10 mm and in 2 mm increments in the range of 10 to 16 mm. The surface of the reinforcing bar 2 is provided with ribs in order to enhance the adhesion of the reinforcing bar 2 in the concrete. The rebar 2 is made from hot-rolled or cold-deformed, drawn or rolled rebar steel with mechanical strength corresponding to the static requirements for the rebar strip 1.

The reinforcing bar strip 1 has a length of 4 to 9 m, and the classification based on the length is performed at intervals of 500 mm in the range of 4 to 7 m and at intervals of 1000 mm in the range of 7 to 9 m. This length-based classification requires only a small amount of rebar strip cutting and fits the dimensions of the reinforced concrete structure to be reinforced with almost no loss.

The mutual spacing of the positioning wires 3, 3'is in the range 400 to 1200 mm, preferably 500 or 1000 mm. The number of positioning wires 3, 3'is obtained from the total length of the reinforcing bar strip 1, the positioning wires 3'on both outer sides adjoining the free end of the reinforcing bar 2 have a projection 4 on the side of the reinforcing bar 2. It is arranged so that the length of the protrusion 4 is 200-500 mm, corresponding to the total length of the rebar strip. If the locating wires 3, 3'have an advantageous mutual spacing of 500 and 1000 mm, the bar protrusion 4 is 250 or 500 mm. The protrusion 4 thus has no problem of pushing the reinforcing bar strip along the support surface into the beam, lateral reinforcements, supports or the like, and is capable of separating positioning wires. Is relatively large.

Since the positioning wire rods 3, 3 ′ do not have to perform static tasks, the diameter of the positioning wire rods 3, 3 ′ is smaller than the diameter of the reinforcing bar 2 and is in the range of 4-10 mm. Classification based on diameter is in 1 mm increments. The locating wire 3, 3'can have a smooth surface and does not require special material properties, so it can be made, for example, from rolled wire. The positioning wires 3, 3 ′ are welded to the reinforcing bar 2 at the intersection, and the positioning wires 3, 3 ′ are aligned with the reinforcing bar 2 and end.

The spacing and diameter of the locating wires 3, 3 ′ must be adapted so that the reinforcing bar strip 1 has sufficient rigidity and shape stability for transportation, handling and laying. Within the scope of the present invention, it is also possible to manufacture reinforcing bar strips in which positioning wires are arranged at different intervals in one reinforcing bar strip. The distribution of locating wires within the rebar strips is optimized with regard to the shape stability of the rebar strips, the splittability of long rebar strips and the rigidity and shape stability of partial strips, depending on the diameter of the rebar.

The spacing between the positioning wire rods is preferably 500 mm for reinforcing bar diameters of 6 and 7 mm, and is preferably 1000 mm for the same diameter of 12 to 16 mm. For the rebar diameters of 8 and 10 mm, the positioning wire spacing is advantageously 500 mm in the central region of the rebar strip and 1000 mm in the edge region of the rebar strip 1. These 500 mm and / or 1000 mm increments provide regular dimensions that reduce the laying of this rebar strip and the control of this laying.

The laying of the reinforcing bar strip according to the invention is carried out as follows: The reinforcing bar strips are first laid side by side in one direction, all reinforcing bars being arranged parallel to one another in one plane. Subsequently, the reinforcing bar strips are laid in the other direction perpendicular to the above direction, and in this case also the reinforcing bars of all the reinforcing bar strips lie in one plane.

If the spacing between the positioning wires 3, 3 ′ is equal to 1000 mm, the following example of the stock plan is obtained: strip length (m) positioning wire rod protrusion (mm) 4 4 500 4.5 5 5 250 5 5 500 5.5 6 250 6 6 500 500 6.5 7 250 7 7 500 8 8 500 9 9 9 500 If the spacing between the positioning wires 3, 3'is 500 mm, the following stockplan example is obtained: strip length (m) Positioning wire rod Projection (mm) 4 7 500 4.5 8 8 500 5 9 500 5.5 10 500 6 11 11 500 6.5 12 500 7 13 500 8 15 500 500 9 17 500

[Brief description of the drawings]

FIG. 1 is a plan view of a reinforcing bar strip according to the present invention.

2 is a cross-sectional view of the rebar strip of FIG.

[Explanation of symbols]

1 Reinforcing bar strip, 2 Reinforcing bar, 3, 3'positioning wire, 4 Projection

Claims (9)

[Utility model registration claims] 1. A reinforcing bar strip for a planar reinforced concrete structure, comprising a plurality of reinforcing bars arranged in parallel with one another at a distance from each other, and a reinforcing bar extending perpendicularly to the reinforcing bars and welded to the reinforcing bars. Of a plurality of locating wire rods that are narrower than the reinforcing bar and have at least 1000 and up to 120 reinforcing bar strips to form the standard reinforcing bar members of the stock plan.
Having a width of 0 mm and a length of 4 to 9 m and 2
Up to 7 rebars with ribbed surfaces and a diameter of 6-16 mm, spaced apart by 00 mm (2)
And a plurality of positioning wire rods (3, 3 ') arranged at intervals of 400 to 1200 mm, and the positioning wire rod (3') adjacent to the free end of the reinforcing bar (2) is the reinforcing bar end. Reinforcing bar strip for sheet reinforced concrete structures, characterized in that it has a distance of 200-500 mm from the section. 2. Reinforcing bar strip according to claim 1, wherein the reinforcing bar (2) is made from hot rolled reinforced steel. 3. Reinforcing bar strip according to claim 1, wherein the reinforcing bar (2) is made from cold deformed reinforced steel. 4. The positioning wire (3, 3 ') is a reinforcing bar (2).
Reinforcing bar strip according to any one of claims 1 to 3, ending in alignment with. 5. The classification based on the length of the reinforcing bar strip (1) is in the range of 4 to 7 m in increments of 500 mm and 7 to 7.
Reinforcing bar strip according to any one of claims 1 to 4, which is carried out in steps of 1000 mm in the range of 9 m. 6. Reinforcing bar strip according to claim 1, wherein the spacing between the positioning wires (3, 3 ′) is 500 and / or 1000 mm. 7. The protrusion (4) on the side of the reinforcing bar (2) is 250 or 500 m farther than the positioning wire (3 ') on the end side.
7. The reinforcing bar strip according to claim 6, which extends m. 8. The classification based on the diameter of the reinforcing bar strip (1) is in the range of 6 to 10 mm in 1 mm increments, and 10
Reinforcement strip according to any one of claims 1 to 7, which is carried out in 2 mm increments in the range from -16 mm. 9. Reinforcing bar strip according to claim 1, wherein the positioning wires (3, 3 ′) are classified in steps of 1 mm and have a diameter of 4 to 10 mm.