EP0943745A2 - 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 device for anchoring a tie rod in a reinforced concrete mass, with one for laying and fastening on the Reinforcement provided holder element, the tie rod the holder element penetrates and through the holder element at a predetermined angle is held to the support plane of the holder element.

Single-sided concrete walls are made with the help of trestles. The up for complete hardening of the concrete mass to be picked up from the trestles Concrete pressure is introduced into the ground via tension rods.

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

In an anchoring device known from DE-C-42 34 892 the Tension rod via a holder plate tied to the upper reinforcement layer fixed for concreting. To maintain the specified installation angle of 45 °, the holder plate has a correspondingly angled V-shaped Middle part on. In one of the two leg parts of the V-shaped middle part a sleeve passing through the leg part for carrying out the tension rod used. This guide part enables a stable position and direction Installation of the tie rod. The disadvantage of this anchoring device is that in addition to the holder plate, a separate guide sleeve for the tie rod must be provided, mainly due to the increase of the production costs for the anchoring device.

In another anchoring device, also known from DE-C-42 34 892 is a guide tube instead of the V-shaped middle part on the holder plate for the tie rod in the specified installation angle. An essential one The disadvantage of this embodiment is that the guide tube in a separate, additional costly operation on the holder plate must be applied. In addition, screwing in a threaded rod only possible if a guide tube with a corresponding internal thread or used with a special thread insert. Come in addition, that if the guide tube is very dirty, for example Concrete mass penetrates into the pipe interior, is practically no longer possible Inserting the tension rod without prior laborious cleaning or even screw in.

The invention is therefore based on the object of a device at the outset to create the type mentioned, which overcomes the aforementioned disadvantages, is inexpensive to manufacture and easy to use position and directionally stable installation of a tie rod enables.

The holder element leads to the achievement of the object according to the invention consists of two holder parts, at least a first holder part one for Implementation of the tie rod provided opening, the opening width is selected in at least one direction so that the maximum possible Tilt angle of the tie rod corresponds to the installation angle, and where the second holder part is arranged at a distance from the opening in the first holder part Stop for fixing the tension rod in the specified installation angle having.

With the holder element according to the invention, and directionally stable installation of a tie rod the same advantages as with a guide tube, but without the disadvantages of difficult handling when dirty.

In a first preferred embodiment of the invention, at least those holder parts which have openings as plate-shaped flat parts designed, wherein the holder element preferably from a single Flat part blank is shaped.

In a particularly stable embodiment of the invention, the second one Holder part also an opening provided for the passage of the tie rod on. In this case, the stop for fixing the tie rod in the predetermined installation angle formed by part of the opening. Appropriately are the plate-shaped flat parts in this embodiment arranged parallel to each other, so that openings of the same dimension can be arranged. Basically, however the two holder parts in a wide range at any angle to each other stand.

In a simple and therefore inexpensive embodiment According to the invention, the plate-shaped flat parts are essentially vertical arranged to each other. Here, the second holder part is preferably made of Part of the first holder part is punched out and out of the support plane of the holder element bent into its final position.

In a second preferred embodiment of the invention, the two are Holder parts formed from rod or wire material, the holder element is preferably formed from a single bar or wire blank.

The main advantage of the holder element according to the invention over The holder plates according to the prior art is that the holder parts in a simple way for screwing a tie rod into the holder element can be prepared by just the shape of the openings in the holder parts and, if necessary, the mutual distance between the two openings in the holder parts to the thread of a screwable into the holder element Must be adjusted.

In a particularly expedient embodiment of the invention Device penetrates one provided for receiving the tie rod Protection tube the openings in the holder parts and is non-positive in these and held in the specified installation angle via the stop. With the Protective tube is put together a sleeve-shaped anchoring element, this anchoring element on the one hand a threaded part for a this usable tie rod and on the other hand an anchoring part for Remains in the concrete mass. By using this arrangement with a protective tube, the insertion of a tie rod after the Set in concrete. This will result in the risk of accidents on construction sites that directly concreted in according to the state of the art and consequently freely towering Tension rods significantly reduced. In addition, the cumbersome Cutting off the tension rods using a cutting disc after concreting in, because the tension rods are simply unscrewed when using the protective tube and can be used again.

This is to protect against the penetration of still liquid concrete free end of the protective tube preferably placed a cap, wherein in a particularly preferred variant inside the cap one inward and one inserted in the threaded part and that Protective tube and the tension rod penetrating the cap adjacent sealing ring is arranged. Becomes the anchoring element Concreted without tension or anchor rod inserted in the threaded part, i.e. the anchor rod is only after concreting into the anchoring element screwed in so that the opening can be closed at the open A plug is inserted at the end of the cap become. Others for use with the anchoring element according to the invention preferred caps are for example DE-U-9314656 refer to.

In principle, any materials can be used to manufacture the holder element are used, which meet the requirements regarding deformability, mechanical strength and corrosion resistance. A preferred one Material is steel, but there are also designs in, for example Plastic or composite materials possible.

In a particularly expedient embodiment of the invention Anchoring device with a protective tube are the openings in the holder parts designed so that the standardized and on construction sites Spacer tubes usually used in the inventive Holder element can be used and the specified installation angle without further measures. The outside diameter is the same of the sleeve-shaped anchoring element in the area of it Plug connection with the protective tube the inside diameter of the standardized Spacer tubes adapted. This has the advantage of being a standard spacer tube in the anchoring element according to the invention without further ado Protection 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 result from the following description of preferred exemplary embodiments and from the drawing; this shows schematically in

Figure 1 is an oblique view of a first embodiment of a holder element.

FIG. 2 shows a side view of the holder element from FIG. 1 in viewing direction y;

FIG. 3 shows a side view of the holder element from FIG. 1 in the viewing direction x;

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

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

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

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

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

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

FIG. 10 shows a side view of the holder element from FIG. 9 in viewing direction y;

FIG. 11 shows a side view of the holder element from FIG. 9 in the viewing direction x;

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

FIG. 13 shows a side view of an anchoring device with the holder element from FIG. 1; FIG.

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

FIG. 15 shows a side view of the holder element from FIG. 14 in the direction of view y.

A holder element 10 for a tie rod 12 shown in FIGS. 1 to 3 or for a protective tube 14 provided for receiving a tension rod has a strip-shaped support plate 16. Approximately in the middle of a longitudinal side edge the support plate 16 protrudes at right angles to this and with a Inclination according to the axial direction z of the tie rod 12 or a protective strip 14 from a side strip 18. The free end of the side strip 18 is bent at right angles to a holder strip 20, so that it is cross-sectional results in a C-shaped profile, the support plate 16 and the holder strips 20 are parallel to each other.

In the support plate 16 and in the holder strip 20, an opening 22, 24 is arranged for the passage of the tie rod 12 and the protective tube 14, respectively. The dimension of the openings 22, 24 at a distance from one another is selected such that the tension rod 12 or the protective tube 14 inserted into the holder element 10 assumes the maximum possible angle of inclination and is thus held in the holder element 10 in a positive and / or non-positive manner . The maximum possible installation angle of the tension rod 12 or the protective tube 14 corresponds to the predetermined installation angle α with respect to a support plane E defined by the support plate 16.

The shape and the dimension of the two openings 22, 24 can vary within wide limits. The opening width in the direction of inclination is decisive for setting the installation angle α ; this is corresponding to the installation angle α to be set larger than the diameter D of the tension rod 12 or the protective tube 14. The shape of the opening 22, 24 is, for example, an ellipse, the small diameter Y of which essentially corresponds to the diameter D of the tension rod 12 or the protective tube 14 corresponds and whose large diameter X is selected so that the desired installation angle α between the rod or protective tube axis z and the support plane E is obtained.

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

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

The embodiment of a holder element 10 shown in FIG. 5 is made of a sheet metal blank to form a U-shaped cross section with parallel mutually standing leg strips 28, 30 are formed. In the thigh strips 28, 30 openings 32, 34 are arranged in pairs. These openings 32, 34 can have the same or different dimensions in pairs and also define different installation angles α. This makes it possible only holder element for tie rods 12 or protective tubes 14 different To provide diameters. It should be noted here that for a screw-in tie rod, the shape of the openings and, if applicable, mutual distance of the openings can be easily adjusted can.

Since the maximum angle of inclination of the tie rod 12 or the protective tube 14 through the width of one of the two openings 20, 24 and 32, 34 in the direction of inclination a single opening is generally sufficient. Instead of a second opening is a stop element, which the Tension rod 12 or the protective tube 14 in its corresponding to the installation angle α maximum tilt position fixed. Such embodiments with an opening and an associated stop element are shown in FIGS 11 shown.

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

7 is the same in the embodiment of a holder element 10 according to FIG Way as in the embodiment according to FIGS. 1 to 3 on the platen 16 approximately in the middle of one of its longitudinal edges of the side strips 18 below Formation of a stop strip 42 bent twice at right angles. This Embodiment corresponds essentially to that of FIGS. 1 to 3, wherein however, only the opening 22 is present in the platen and the holder strip 20 with opening 24 on the minimally required stop strips 42, whose one longitudinal edge forms the stop 36 has been reduced.

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

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

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

The support strips 38, 40 rising from the support level E are on their Roughened upper edge or provided with teeth 44. This gives a better position stabilization of the holder element 10, if this with Iron trusses are tied to a reinforcement. Of course you can the support strips 38, 40 also with slots or holes for implementation be provided by iron binders.

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

The embodiment variants shown in FIGS. 1 to 12 and 14 and 15 represent only a small selection from a large number of possible variations a holder element with two openings or one opening and a stop for fixing a tie rod or a protective tube represents.

In the embodiment of an anchoring device shown in FIG. 13 1 is a protective tube 14 made of plastic inserted into the openings 22, 24 in the support plate 16 or in the holder strip 20. An anchoring element 56 with a threaded part 58 and one Anchoring part 60 is inserted into protective tube 14 at one end. The tie rod 12 passes through the protective tube 14 and is with the threaded part 58 of the anchoring element 56 screwed. The free end of the protective tube 14 is a closure cap 62 is placed. From the inner wall of the cap 62 protrudes an integrally molded flexible and tapering inward trained sealing ring 64 from, the clear width about the core diameter of the tie rod 12 used corresponds. Becomes the anchoring element 56 concreted in without inserted tie rod 12, this can be done on the sealing cap 62 an opening for the tie rod 10 to be used later closing plug 66 may be provided as a lid.

The anchoring element 56 is positioned before the pouring the concrete mass 68 by tying the holder element 10 to the upper Reinforcement layer 54 of reinforcement. The holder member 10 can Slots 26 are tied in the platen 16.

After pouring and hardening the concrete mass 68, a wall formwork created and supported on trestles. The trestles are in in a known manner via the tie rod protruding from the concrete mass 68 12 anchored. It is particularly important that the tension rod in an angle of 45 ° to the foundation is built in, because of the manufacturing the concrete pressure on the wall is anchored in the floor slab or must be introduced into the foundation. Because the dimension of Openings 22, 24 in the support plate 16 and in the holder strip 20 are selected in this way is that an inserted tie rod or a protective tube with the support level E of the support plate 16 the predetermined angle α of 45 °, for example forms, the angle of inclination of the protective tube 14 to the foundation professional arrangement of the holder element also 45 °. After making the wall becomes the tie rod 12 from the anchoring element 56 unscrewed and can be used again. That in the concrete mass 68 Protective tube 14 remaining is then cut off at ground level.

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

Claims (13)

Device for anchoring a tie rod (12) of a reinforced concrete mass (68), with a holder element (10) provided for resting and fastening on the reinforcement (54), the tie rod (12) penetrating the holder element (10) and through the holder element ( 10) is held at a predetermined installation angle (α) to the support plane (E) of the holder element (10),
characterized in that
the holder element (10) consists of two holder parts (16, 20; 28, 30; 38, 40), at least one first holder part having an opening (22, 24; 32, 34; 50, 52) provided for the passage of the tensioning rod (12) ), the opening width of which is selected in at least one direction (x) such that the maximum possible angle of inclination of the tensioning rod (12) corresponds to the installation angle ( α ), and the second holder part being arranged at a distance (α) from the opening in the first holder part Has stop for fixing the tie rod (12) in the specified installation angle ( α ). Device according to claim 1, characterized in that at least Holder parts having openings are plate-shaped flat parts and that Holder element preferably formed from a single flat part blank is. Apparatus according to claim 1 or 2, characterized in that the stop arranged on the second holder part for fixing the tension rod (12) in the predetermined installation angle ( α ) is part of an opening. Device according to claim 2 or 3, characterized in that the plate-shaped flat parts are arranged parallel to each other. Device according to claim 2 or 3, characterized in that the plate-shaped flat parts arranged substantially perpendicular to each other are. Apparatus according to claim 5, characterized in that the second Holder part (70) partially punched out of the first holder part (16) and out the support plane (E) of the holder element (10) substantially at right angles is bent. Device according to claim 1, characterized in that the holder parts are formed from rods or wire material (46) and the holder element (10) preferably from a single bar or wire blank is shaped. Device according to one of claims 1 to 7, characterized in that that the shape of the openings (22,24; 32,34; 50,52) in the holder parts (16.20; 28.30; 38.40) and, if applicable, the mutual distance (a) of the two Openings in the holder parts to the thread one in the holder element (10) screw-in tension rod (12) is adapted. Device according to one of claims 1 to 8, characterized in that that a protective tube provided for receiving the tensioning rod (12) (14) the openings (22,24; 32,34; 50,52) in the holder parts (16.20; 28.30; 38.40) penetrates and in these non-positively and over the Stop is held in the specified installation angle (α). Apparatus according to claim 9, characterized in that a sleeve-shaped Anchoring element (56) with a threaded part (58) for one in this insertable tie rod (12) and an anchoring part (60) is put together with the protective tube (14). Apparatus according to claim 9 or 10, characterized in that the a cap (62) is placed on the free end of the protective tube (14) is. Device according to claim 11, characterized in that inside the cap (62) one inward and one in the Threaded part (58) inserted and the protective tube (14) and the attached Closing cap (62) penetrating tension rod (12) Sealing ring (64) is arranged. Apparatus according to claim 11 or 12, characterized in that the Locking cap (62) at its free end, one with a locking pin (66) has a closable opening.

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