SI9600315A - Reinforcing steel web - Google Patents

Abstract

The reinforcement relates to that having longitudinal bars running parallel to one another and with are held at a distance by spacers (13). The bars are joined by bent lateral bars, a number of which substitute for the spacers. The longitudinal bars (1,2) are each located on the outer side of the bent region of the lateral bars (3). The longitudinal bars are made from a different material to that of the lateral bars. Spacers with a different angle to that of the lateral bars are provided for different spacings over the reinforcement.

Description

Reinforced concrete reinforcement

The invention relates to reinforced concrete reinforcement with two substantially parallel running arm positions forming substantially parallel longitudinal bars and their connecting transverse bars, which are supported at a distance by spacers, consisting essentially of an odd number of parallel parallel runs the bars connected to the broken, transverse bars at regular intervals, the part of the bars of both armaments being replaced by the longitudinal bars of the spacer brackets, and that part of the bars is connected to the further bars of the armims.

The object of the type defined above is known from patent AT 399.006.

Flat reinforced concrete structures are almost always two positions of reinforced concrete reinforcement, the upper and lower horizontal structures and the inner and outer vertical structures. These consist of intersecting rods in the upper as well as lower positions. Prior to concreting, these armime positions are laid on the formwork, tied and spaced with spacers. This spacing of the upper or lower intersection of the reinforcing reinforcement must be done very carefully, firmly and labor-intensive to prevent slipping during concreting or even during the laying of steel reinforcement. The spacers according to the basic patent are manufactured in such a way that the longitudinal rods on the inside of the fracture region of the transverse rods are connected to the latter, preferably welding. After the fracture operation, the broken arms of the transverse bars partially enclose the longitudinal bar in question. The disadvantage of this reinforced concrete structure is that it occurs if e.g. due to the above loading, a certain bending point between the longitudinal and transverse bars of the spacer holder fails, until the bars of the reinforcement position therein move in the downward direction, which means a loss of distance at this point, since the longitudinal rod there may leak down.

Therefore, it is an object of the invention to provide reinforced concrete reinforcement of the aforementioned type, which allows, even if one or more twist points of the spacer holders fail, permanent and reliable spacing with a predetermined spacing.

According to the invention, this is achieved by the fact that the longitudinal bars are arranged each time on the outside of the breaking region of the transverse bars.

In this way, the longitudinal bars, after the fracture operation, lie at a very high or high angle. the outermost position, and therefore, even in the case of a collapsed or similarly twisted city with a transverse rod, in this place they cannot escape downwards, since the transverse rod in each case lies beneath the twisted site and supports the attachment point of the longitudinal and transverse bars.

Further, it may be contemplated according to the invention that the longitudinal bars and the transverse bars are made of different materials.

This can save on high-grade material, since only high-stressed parts of reinforced concrete reinforcement, namely longitudinal bars, should be made of high-strength material.

According to another embodiment of the invention, it may be contemplated that spacers with different angles of transverse bars are provided for different spacing of armaments connected via spacers.

This enables the spacer holders to be made in advance and the required height of the spacer brackets is adjusted by more or less open unfolding or bending in the sense of convergence of the arms.

It is a further object of the invention to provide a method of manufacturing a spacer holder for reinforced concrete reinforcement for reinforced concrete structures in two planar extending arm positions, wherein the spacer holder has an odd number one exceeding the number of longitudinal bars interconnected via transverse bars, with the transverse bars closing in the area of the median longitudinal bar, according to patent AT 399.006.

According to the invention, this is achieved by connecting, in one working operation, the longitudinal bars and the transverse rods, preferably welding, in a width determined by the height of the spacing, and in the same working operation the transverse rods are bent so that they protrude away from the central longitudinal rod.

By welding and bending the spacer handle performed in one working operation, the work time can be significantly reduced compared to the known manufacturing method.

In addition, it can be further provided that the belt bending curvature is selected depending on the required stiffness and / or. or the height of the reinforced concrete part to be reinforced so that the height of the spacer holder can be varied very easily.

It is a further object of the invention to replace part of a conventional reinforced concrete reinforcement.

According to the invention, we therefore propose that the quality of steel of the longitudinal bars of the mesh arm used for the manufacture of spacer brackets is selected depending on the quality of the steel of the main reinforcement, and the diameter of the longitudinal bars of the mesh arm used for the manufacture of spacer brackets, depending on the thickness of the transverse bars.

For the placement of wall fittings, the spacer holder is a significant relief, with the longitudinal bars being able to form the inner and outer main fittings.

All spacers can be positioned with openings (yawns) against the pre-fabricated side of the wall paneling (outside or inside), whereby the wall longitudinal armature can be attached to the standing spacer pieces by utilizing the parts projecting over the folded transverse bars.

After fixing one armature of the position, we can insert the elements with the bent part on the already connected parts and then connect them with the longitudinal armature on the other side. In this case, no further armime bars are required, with the spacer arms forming a vertical main armature.

Similarly, we can work by using a very thin construction steel mesh instead of the longitudinal reinforcement, with the vertical bars of the net and the vertical bars of the spacers, taken together, can serve as the vertical main reinforcement.

Due to the flexural rigidity of the pre-prepared arm elements, both arm positions can be tied to the same ones on the floor and then put as a pre-prepared, large, complete arm element into the formwork.

As reinforcing elements made of thin rods and spatially reshaped have only a small mass, it is important to pay particular attention to the fact that as much transport as possible is carried from the place of production to the construction site with as little transport as possible. costs.

In the armyme element according to the invention, the outer position of the longitudinal bars allows the stacking of all armyam elements into large bundles without having to carry too much empty space.

The invention is further explained on the basis of the drawings. In this respect, FIG. 1 shows a side view of a reinforced concrete reinforcement according to the invention; FIG. 2 is a spacer holder of FIG. 1 in the front view; 3 shows a side view of a reinforced concrete reinforcement according to the invention; 4 shows the reinforced concrete reinforcement of FIG. 3 in the front view; 5 shows the reinforced concrete reinforcement of FIG. 3 and 4 in axonometric representation, FIG. 6 is a schematic view of the manufacture of a spacer holder for reinforced concrete reinforcement according to the invention; 7 shows a further reinforced concrete reinforcement with the free ends of the transverse bars in the front view; and FIG. 8 presentations of reinforced concrete reinforcement as can be stacked in a small space.

The spacer holders 13 according to the invention as shown in FIG. 1 and 2, essentially consisting of longitudinal bars 1 and 2, which are interconnected by means of broken transverse bars 3, preferably a fused joint. In this case, the longitudinal bars 1 and 2 of the invention are each arranged on the outside of the refractive region of the transverse bars 3.

With this comes the advantage that, if e.g. due to fracture, a certain twist breaks the point between the longitudinal bar 1 or 2 and the transverse rod 3, no displacement of the above longitudinal longitudinal rod 1 in the downward direction is possible and therefore the distance in the predetermined size is maintained.

The manufacture of spacer holders as indicated in FIG. 6, is carried out according to the invention by connecting, preferably welding, in a particular working operation of the longitudinal rod 1, 2 and the transverse rod 3, to a spacer in the Width, conditioned by the height of the spacing, and in the same working operation of the transverse rod, bend away from the central longitudinal rod 1. This, in comparison with the known manufacturing processes, results in a reduction of the working dimension. The angle of 10, which is surrounded by the crossbar arms, can also be selected according to needs. If we change this angle to 10, the width 4 and the height 5 of the spacer holder can be made differently sized and thus adjusted to the thickness of the reinforced concrete part 20 according to FIG. 4.

With these spacers, the armaments of the position can be interconnected while maintaining a predetermined distance. These armime positions have longitudinal bars 6 and transverse bars 8 respectively. longitudinal bars 7 and transverse bars 9. In this case, all longitudinal bars 6 can rest on and be connected to the transverse bars 8. In the same way, the transverse bars 9 lie on the longitudinal bars 7. As can be seen from the drawings of FIG. 4 and 5, therefore, the longitudinal bars 1 and 2 of the spacer bracket 13 are at the same height as the transverse bars 8 and 9, with a suitable deviation from the formwork through the projecting ends of the transverse bars 3.

FIG. 5, it is seen that the longitudinal bars 1, 2 of the spacer brackets 13 are connected in the same way as the transverse bars 8, 9 to the longitudinal bars 6, 7 and can therefore withstand the corresponding tensile forces. In the joint armature, however, this results in very few masses whose cross section cannot be tightened to absorb the tensile forces.

In the case of reinforced concrete reinforcement according to FIG. 7, the spacers 13 are arranged rotatably rotated 180 °. Here, the longitudinal bars 6, 7 are connected to the spacer 13 as longitudinal reinforcement. In such a design of reinforced concrete reinforcement according to FIG. 7, in the first working operation of the longitudinal rod 6 in the area of the first formwork wall 14, it can be connected to the standing spacers 13a, and in the second working operation, the spacer brackets 13 can be connected to the longitudinal rods 7. This arrangement is also suitable for large-scale pre-fabrication due to rigidity.

Claims (6)

Patent claims 1. Reinforced concrete reinforcement with two substantially parallel reinforcing positions formed by substantially parallel longitudinal bars and their connecting transverse bars, which are supported at a distance by spacers consisting essentially of an odd number of parallel parallel bars. , which are connected to the broken, at regular intervals, transverse bars, with a portion of the bars of both armaments replacing the longitudinal bars of the spacer brackets, and that portion of the bars being connected to the further bars of the armaments, characterized in that the longitudinal bars (1, 2 ) arranged at each side on the outside of the breaking zone of the transverse bars (3). 2. Reinforced concrete reinforcement according to claim 1, characterized in that the longitudinal bars (1,2) and the transverse bars (3) are made of different materials. Reinforced concrete reinforcement according to claim 1 or 2, characterized in that spacers with different angles of transverse bars are provided for different spacings of armaments connected via spacers (13). 4. A method of manufacturing a spacer for reinforced concrete reinforcement for reinforced concrete structures in two planes extending armored positions, the spacer having an odd number one exceeding the number of longitudinal bars interconnected by transverse bars, wherein the transverse bars are folded in the region of the median longitudinal rods, characterized in that in one working operation the longitudinal bars and the transverse rods are connected, preferably welded, in a width determined by the height of the spacing, and in the same working operation the transverse rods are folded so as to project away from the central longitudinal rod. Method according to claim 4, characterized in that the belt bending curvature is selected depending on the required stiffness and / or. or the height of the reinforced concrete part to be reinforced. 6. Reinforced concrete reinforcement made according to the method of claim 4 or 5, characterized in that the quality of the steel of the longitudinal bars of the mesh armor used for the manufacture of spacers is selected depending on the quality of the steel of the main reinforcement, the diameter of the longitudinal bars of the mesh of the mesh used for the manufacture distance holders, however, depending on the thickness of the transverse bars.