EP0943745B1 - Anchoring device for a tension bar in a reinforced concrete mass - Google Patents

Abstract

The bracket (10) has a two-part construction, at least one part (16) containing an opening (22,24) for a tension rod (12) to be passed through, and the other part (20) including a stop for fixing the rod in a preselected angle relative to the bracket plane. The width of the tension rod opening in at least one direction (X) is chosen to provide the maximum tension rod angle.

Description

The invention relates to a method for anchoring a tension rod in a reinforced concrete mass, with one for support and attachment to the Reinforcement provided holder element.

Single-sided concrete walls are made with the help of support beams. The up for complete curing of the concrete mass to be absorbed by the support brackets Concrete pressure is introduced via tie rods in the ground.

When anchoring trestles in floor slabs or foundations the position and directionally stable installation of the anchoring parts of essential Importance. In particular, strict care must be taken that the usual equipped with an anchoring element tension rod in one Angle of 45 ° to the plane of the base plate or the foundation installed becomes.

In an anchoring device known from DE-C-42 34 892 is the Tension rod via a holder plate tied to the upper reinforcement layer fixed for setting in concrete. To comply with said installation angle of 45 °, the holder plate has a corresponding angled V-shaped Middle section on. In one of the two leg portions of the V-shaped central part is a sleeve portion passing through the sleeve for carrying out the tensioning rod used. This guide allows a position and directionally stable Installation of the tension rod. The disadvantage of this anchoring device is that in addition to the holder plate a separate guide sleeve for The tension rod must be provided, which is mainly due to the increase the cost price for the anchoring device affects.

In another, also known from DE-C-42 34 892 anchoring device is a guide tube instead of the V-shaped center part on the holder plate set for the tension rod in the specified installation angle. An essential Disadvantage of this embodiment is that the guide tube in a separate, additional cost-causing operation to the holder plate must be recognized. In addition, the screwing in a threaded rod only possible if a guide tube with corresponding internal thread or with a special threaded insert is used. Come in addition, that it is heavily contaminated the guide tube, if, for example Concrete mass penetrates into the interior of the pipe, practically no longer possible, one Tension rod without prior tedious cleaning introduce or even screwed.

The invention is therefore based on the object, a method with a holder element of the above to create said type, which overcomes the aforementioned disadvantages, is inexpensive to manufacture and easy handling a position and direction stable installation of a tensioning rod allows.

For the inventive solution of the problem leads a method having the features of claim 1.

The holder element according to the invention results in respect of the positional and directionally stable installation of a tension rod the same advantages as with a guide tube, but without the disadvantages of difficult handling with pollution.

In a preferred embodiment of the invention the holder element preferably from a single Material cut is shaped.

In a particularly stable embodiment of the invention, the second Holder part also provided for carrying out the tensioning rod opening on. In this case, the stop for fixing the tension rod in predetermined installation angle formed by a part of the opening. Conveniently, are in this embodiment, the holder parts arranged parallel to each other, so that openings in both parts of the holder same dimension can be arranged. In principle, however, can the two holder parts in a wide range at an arbitrary angle to each other stand.

In a simple and therefore inexpensive to manufacture embodiment the invention, the holder parts are substantially perpendicular arranged to each other. Here, the second holder part is preferably from the Partially punched first holder part and from the support plane of the holder element bent into its final position.

The main advantage of the inventive holder element over The holder plates according to the prior art is that the holder parts in a simple way for screwing a tension rod in the holder element can be prepared by merely changing the shape of the openings in the holder parts and possibly the mutual distance of the two openings in the holder parts to the thread of a screwed into the holder element Tension rod must be adjusted.

In a particularly advantageous embodiment of the inventive Device penetrates a provided for receiving the tension rod Protective tube, the openings in the holder parts and is non-positively in this and held over the stop in the specified installation angle. With the Protective tube is a sleeve-shaped anchoring element plugged together, this anchoring element on the one hand a threaded part for a in this usable tension rod and on the other hand an anchoring part for Whereabouts in the concrete mass. By using this arrangement with a protective tube, the insertion of a tensioning rod after completed Concreting done. As a result, the risk of accidents on construction sites due the directly embedded in the prior art and therefore freely towering Tension rods significantly reduced. In addition, eliminates the cumbersome Separating the tension rods by means of a cutting disc after setting in concrete, because the tension rods simply unscrewed when using the protective tube and can be used again.

To protect against the ingress of still liquid concrete mass is the free end of the protective tube preferably a cap mounted, wherein in a particularly preferred variant in the interior of the cap an inwardly directed and one inserted into the threaded part and the Protective tube and the attached cap penetrating tension rod is disposed adjacent sealing ring. Will the anchoring element without embedded in the threaded part clamping or anchor rod embedded, i. The anchor rod is only after successful concreting into the anchoring element screwed in, so can close the opening at the free End of the attached cap inserted a locking pin become. Further for use with the anchoring element according to the invention preferred closure caps are, for example, DE-U-9314656 refer to.

In principle, any materials can be used for the production of the holder element are used, which meet the requirements with regard to deformability, mechanical strength and corrosion resistance. A preferred one Material is steel, but also versions in example Plastic or composite materials conceivable.

In a particularly expedient embodiment of the inventive Anchoring device with a protective tube are the openings in the holder parts designed so that the standardized and construction sites usually used spacer tubes in the inventive Holder element can be used and the default installation angle without further action. In the same way is the outer diameter of the sleeve-shaped anchoring element in the region of its Plug connection with the protective tube to the inner diameter of the standardized Adapted spacer tubes. This has the advantage of being a standard spacer tube in the inventive anchoring element readily as Protective tube can be used.

Fig. 1

ein Schrägsicht auf eine erste Ausführungsform eines Halterelementes;

Fig. 2

eine Seitenansicht des Halterelementes von Fig. 1 in Blickrichtung y;

Fig. 3

eine Seitenansicht des Halterelementes von Fig. 1 in Blickrichtung x;

Fig. 4

eine Seitenansicht einer zweiten Ausführungsform eines Halterelementes;

Fig. 5

eine Schrägsicht auf eine dritte Ausführungsform eines Halterelementes;

Fig. 6

eine Seitenansicht einer vierten Ausführungsform eines Halterelementes;

Fig. 7

eine Schrägsicht auf eine fünfte Ausführungsform eines Halterelementes;

Fig. 8

eine Seitenansicht einer sechsten Ausführungsform eines Halterelementes;

Fig. 9

eine Schrägsicht auf eine siebte Ausführungsform eines Halterelementes;

Fig. 10

eine Seitenansicht auf das Halterelement von Fig. 9 in Blickrichtung y;

Fig. 11

eine Seitenansicht auf das Halterelement von Fig. 9 in Blickrichtung x;

Fig. 12

eine Schrägsicht auf eine achte Ausführungsform eines Halterelementes;

Fig. 13

eine Seitenansicht einer Verankerungsvorrichtung mit dem Halterelement von Fig. 1;

Fig. 14

eine Schrägsicht auf eine neunte Ausführungsform eines Halterelementes;

Fig. 15

eine Seitenansicht des Halterelementes von Fig. 14 in Blickrichtung y.

Further advantages, features and details of the invention will become apparent from the following description of preferred embodiments and from the drawing; this shows schematically in

Fig. 1

an oblique view of a first embodiment of a holder element;

Fig. 2

a side view of the holder element of Figure 1 in the direction y.

Fig. 3

a side view of the holder element of Figure 1 in the viewing direction x.

Fig. 4

a side view of a second embodiment of a holder element;

Fig. 5

an oblique view of a third embodiment of a holder element;

Fig. 6

a side view of a fourth embodiment of a holder element;

Fig. 7

an oblique view of a fifth embodiment of a holder element;

Fig. 8

a side view of a sixth embodiment of a holder element;

Fig. 9

an oblique view of a seventh embodiment of a holder element;

Fig. 10

a side view of the holder element of Figure 9 in the direction y.

Fig. 11

a side view of the holder element of Figure 9 in the direction x;

Fig. 12

an oblique view of an eighth embodiment of a holder element;

Fig. 13

a side view of an anchoring device with the holder element of Fig. 1;

Fig. 14

an oblique view of a ninth embodiment of a holder element;

Fig. 15

a side view of the holder element of FIG. 14 in the direction of y.

A illustrated in FIGS. 1 to 3 holder member 10 for a tension rod 12th or for a provided for receiving a tension rod protective tube 14th has a strip-shaped support plate 16. Approximately in the middle of a long side edge the support plate 16 protrudes at right angles to this and with a Oblique inclination according to the axial direction z of the tension rod 12 or of the protective tube 14 from a side strip 18. The free end of the sidelight 18 is bent at right angles to a holder strip 20, so that cross-section a C-shaped profiling results, wherein the support plate 16 and the holder strip 20 are parallel to each other.

In the support plate 16 and the holder strip 20 is an opening 22, 24 for each Implementation of the tension rod 12 and the protective tube 14 is arranged. The Dimension of the spaced a from each other openings 22, 24 is selected so that the inserted into the holder member 10 tension rod 12 and the Protective tube 14 occupies the maximum possible angle of inclination and on this Way in the holder member 10 is held positively and / or non-positively. Of the maximum possible installation angle of the tension rod 12 and the protective tube 14 corresponds to the predetermined installation angle a with respect to a through the Platen 16 defined support level E.

The shape and the dimension of the two openings 22, 24 can in wide Borders vary. To adjust the installation angle α is the opening width in the direction of inclination decisive; this is according to the set Installation angle α greater than the diameter D of the tension rod 12 and des Protective tube 14. The shape of the opening 22, 24 is for example an ellipse, whose small diameter Y substantially the diameter D of the tension rod 12 and the protective tube 14 corresponds and their large diameter X is chosen so that the desired installation angle α between Bar or protective tube axis z and support level E results.

In the strip-shaped support plate 16 are to facilitate the tying the holder plate 10 on a reinforcement layer longitudinal slots 26 for Implementation of iron trusses arranged.

In the embodiment of a holder plate 10 shown in FIG. 4, the strip-shaped Platen 16 at one of its ends to form the side strip 18 and the holder strip 20 bent twice at right angles. As in the embodiment according to FIGS. 1 to 3, the support plate are also here 16 and the holder strip 20 arranged parallel to each other. The location the openings 22, 24 corresponds to that of FIG. 1.

The illustrated in Fig. 5 embodiment of a holder element 10 is made a sheet metal blank to form a U-shaped cross-section with parallel shaped leg strip 28, 30 shaped. In the thigh strip 28, 30 pairs of openings 32, 34 are arranged. These openings 32, 34 may have the same or different dimensions in pairs and also define different installation angles α. This makes it possible to get one single holder element for tension rods 12 or protective tubes 14 different Diameter to provide. It should be noted here that for a screw-in tension rod, the shape of the openings and possibly the mutual distance of the openings can be easily adjusted can.

Since the maximum inclination angle of the tension rod 12 and the protective tube 14 through the width of one of the two openings 20, 24 and 32, 34 in the direction of inclination is predetermined, basically a single opening is sufficient. Instead of a second opening is a stop element which the Tensioning rod 12 and the protective tube 14 in its the installation angle α corresponding fixed at maximum tilt. Such embodiments with an opening and an associated stop element are in Figs. 6 to 11 is shown.

6 shows a holder element 10, in which the strip-shaped support plate 16 terminal bent to the holder strip 20. The tension rod 12 or the Protective tube 14 penetrates the opening 22 in the support plate 16 and is from Holder strip 20, the free end forms a stop 36, in his the Installation angle a corresponding maximum angle of inclination fixed.

In the embodiment of a holder element 10 according to FIG. 7 is in the same As in the embodiment according to FIGS. 1 to 3 on the support plate 16 approximately in the middle of one of its longitudinal edges of the side strips 18 below Forming a stop strip 42 bent twice at right angles. These Embodiment corresponds substantially to that of FIGS. 1 to 3, wherein However, only the opening 22 is present in the support plate and the holder strip 20 with opening 24 on the minimum required stop strip 42, whose one longitudinal edge forms the stop 36 has been reduced.

The embodiment shown in Fig. 8 is a modification of the holder member of Fig. 7, wherein the stop strip 42 chosen so wide and positioned so is that he has two stops 36a, b for the two possible tilt positions the tension rod 12 and the protective tube 14 offers. In this Holder member may thus be a the opening 22 penetrating the tension rod 12th or a protective tube 14 are positioned in two different directions.

In a further, not shown in the drawing, from the holder element According to Fig. 8 modified variant is instead of the wide stop strip 42 a holder part with two differently sized openings provided for example, a tension rod and a protective tube. The opening 22 in the holder part 16 is dimensioned in this case so that they forms a stop for both a tension rod and a protective tube.

In the embodiment of a holder element shown in FIGS. 9 to 11 10 are instead of a strip-shaped support plate 16 two Support strips 38, 40 provided. A first support strip 38 protrudes from the shoulder in one direction in the support plane E from. The second edition strip 40 is with the side strip 18 via a stop strip 42nd connecting connecting web and protrudes into the first support strip 38 opposite direction in the support plane E from. From the side strip 18 protrudes at right angles from the holder strip 20 with the opening 24. An in the opening 24 inserted tension rod 12 and a protective tube 14 is of the Stop 42 in its predetermined by the opening 24 inclined position below Formation of the installation angle a held frictionally.

The towering from the support plane E support strips 38, 40 are at their Roughened upper edge or provided with a toothing 44. This results a better position stabilization of the holder element 10, if this with Iron ties is tied to a reinforcement. Of course you can the support strips 38, 40 with slots or holes to carry out be provided by iron binders.

The embodiment variant of a holder element 10 shown in FIG. 12 is made a wire or a rod 46 is formed. A first support loop 48 forms the support plane E. An additional turn defines an opening 50 for Implementation of a tension rod 12 and a protective tube 14. The wire or the rod 46 is to another holder loop 52 having a second opening 53rd formed at a distance a to the first opening 50. From Fig. 12 is readily understandable that instead of a closed holder loop 52 a stop for fixing the tension rod 12 and the protective tube 14 in its maximum, The inclination angle corresponding to the installation angle α is sufficient. Of course it is also possible to have different dimensions Opening loops for carrying out a tension rod or a protective tube to arrange, as for example, in connection with the above Fig. 8 modified embodiment is described.

The embodiments shown in FIGS. 1 to 12 and 14 and 15 represent only a small section of a large number of possible variations a holder element with two openings or an opening and a stop for fixing a tension rod or a protective tube represents.

In the embodiment of an anchoring device shown in FIG. 13 with the holder element of Fig. 1 is a protective tube 14 made of plastic inserted into the openings 22, 24 in the support plate 16 and in the holder strip 20. An anchoring element 56 with a threaded portion 58 and a Anchoring part 60 is inserted at one end into the protective tube 14. The tension rod 12 passes through the protective tube 14 and is connected to the threaded portion 58 of the anchoring element 56 bolted. The free end of the protective tube 14 is a cap 62 attached. From the inner wall of the cap 62 protrudes integrally molded flexible and inwardly tapered trained sealing ring 64 from whose clear width is about the Kemdurchmesser of the inserted tension rod 12 corresponds. Will the anchoring element 56 cast in without inserted tension rod 12, so can on the cap 62 an opening for the later to be used tension rod 10th Closing closure pin 66 may be provided as a lid.

The positioning of the anchoring element 56 is carried out before infusion the concrete mass 68 by tying the holder element 10 on the upper Reinforcement layer 54 of a reinforcement. The holder element 10 can over the Slots 26 are tied in the support plate 16.

After pouring and curing the concrete mass 68 is a wall formwork created and supported by trestles. The trestles will be in known manner on the protruding from the concrete mass 68 tension rod 12 anchored. It is of particular importance that the tension rod in is installed at an angle of 45 ° to the foundation, as in the manufacture the wall occurring concrete pressure on the anchoring in the bottom plate or into the foundation. Because the dimension of Openings 22, 24 are selected in the support plate 16 and the holder strip 20 so is that an inserted tension rod or a protective tube with the support level E of the support plate 16 the predetermined angle α of, for example, 45 ° forms, the angle of inclination of the protective tube 14 contributes to the foundation professional arrangement of the holder element also 45 °. After the production the wall of the tension rod 12 from the anchoring element 56th turned out and can be used again. This in the concrete mass 68 remaining protective tube 14 is then cut off at ground level.

In the embodiment of a holder plate 10 shown in Figs. 4 and 5 is off the strip-shaped support plate 16 a second holder part 70 partially punched out and leaving an opening 72 in the support plate 16 at right angles bent over to this.

Claims (12)

1. Method for anchoring a tensioning rod (12) in a reinforced concrete mass (68) with a retaining element (10) provided for support and attachment to the reinforcement (54) with two retaining parts (16, 20; 28, 30; 38, 40; 48, 52; 70) of flat bar, rod or wire material, where at least a first retaining part (16, 28, 38, 40, 48) has a first opening (22, 32, 50) provided for passage of the tensioning rod (12), the opening width of which in at least one direction (x) is selected so that the maximum possible slope angle of the tensioning rod (12) corresponds to an installation angle (α) and one of the retaining parts (16, 28, 38, 40, 48) forms a support plane (E) and the second retaining part (20, 30, 52, 70) has a stop arranged at a distance (a) from the opening (22, 32, 50) in the first retaining part (16, 28, 38) to fix the tensioning rod (12) in the prespecified installation angle (α), in which method the retaining part (16, 28, 38, 40, 48) forming the support plane (E) is laid on the reinforcement and attached thereto and the concrete mass (68) cast thereon.
2. Method according to claim 1, characterised in that the retaining element (12) is formed from a single material section.
3. Method according to claim 1 or 2, characterised in that the stop which is arranged on the second retaining part (20, 30, 52, 70) to fix the tensioning rod (12) at a prespecified installation angle (α) is part of a second opening (24, 34, 53).
4. Method according to any of claims 1 to 3, characterised in that the retaining parts are arranged parallel to each other.
5. Method according to any of claims 1 to 3, characterised in that the retaining parts are arranged substantially perpendicular to each other.
6. Method according to claim 5, characterised in that the second retaining part (70) is partly punched out of the first retaining part (16) and is bent substantially at right angles out of the support plane (E).
7. Method according to any of claims 1 to 6, characterised in that the shape of the opening (22, 24; 32, 34; 50, 53) in the retaining parts (16, 20; 28, 30; 48, 52), and where applicable the mutual spacing (a) of the two openings in the retaining parts, is adapted to the thread of a tension rod (12) which can be screwed into the retaining element (10).
8. Method according to any of claims 1 to 7, characterised in that a protective tube (14) which is provided to hold the tension rod (12) penetrates the opening (22, 24; 32, 34; 50, 53) in the retaining parts (16, 20; 28, 30; 48, 53) and is held in this by force fit and by way of the stop at the prespecified installation angle (α).
9. Method according to claim 8, characterised in that a sleeve-like anchoring element (56) with a threaded rod part (58) for a tensioning rod (12) which can be inserted therein and an anchoring part (60) is attached to the protective tube (14).
10. Method according to claim 8 or 9, characterised in that a closing cap (62) is placed on the free end of the protective tube (14).
11. Method according to claim 10, characterised in that in the inside of the closing cap (62) is arranged a inward-facing sealing ring (64) that is inserted in the threaded part (58) and lies on the tensioning rod (12) which passes through the protective tube (14) and applied dosing cap (52).
12. Method according to claim 10 or 11, characterised in that the closing cap (62) at its free end has an opening which can be closed with a closing peg (66).

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