Reinforcement device

Abstract

Reinforcement device (2) which forms at least part of a reinforcement for a concrete structure, with a frame (4) which has retaining elements (12, 22, 23) at several positions, which are designed such that reinforcement means (14, 24, 24') can be fixedly received on them in a predetermined position relative to the frame (4), characterized in that the reinforcement device (2) forms a working scaffold and that at least one working platform (16) is fixed to the frame (4) and / or the frame (4) has receiving points for fixing at least one working platform (16).

Description

[0001] The invention relates to a reinforcement device that forms at least part of a reinforcement for a concrete structure, comprising a frame that has holding elements at several positions that are designed to accommodate reinforcement means in a predetermined position relative to the frame. Furthermore, the invention relates to a concrete structure with reinforcement in which the reinforcement device is used.

[0002] Reinforcement devices of the type mentioned above are known, for example, from KR 100873846 B1, DE 7032938 U, US 2009 / 0100784 A1 and US 2004 / 0099785 A1.

[0003] Reinforcements are used to strengthen concrete structures. The primary purpose of reinforcement is to increase the resistance of the concrete to tensile stresses. However, installing reinforcement in a concrete structure is complex and associated with safety risks. Particularly in concrete structures several meters high, such as parts of a bridge substructure such as bridge piers or abutments, workers must regularly climb on and within the reinforcement to install the reinforcement. If workers are injured during the installation of the reinforcement, they are often difficult to rescue.

[0004] The invention is therefore based on the object of providing reinforcement devices or concrete structures in which these reinforcement devices are used, which are characterized by assembly and safety advantages. This object is achieved by a reinforcement device having the features of claim 1 and a concrete structure according to claim 12.

[0005] The reinforcement device according to the invention forms at least part of the reinforcement for a concrete structure, in particular for parts of a bridge substructure several meters high, such as bridge piers or abutments. It has a frame with holding elements at several predetermined positions on the frame. The holding elements are designed such that they can accommodate reinforcement, which is thereby fixed in a predetermined position relative to the frame. With the reinforcement device according to the invention, the reinforcement can thus be installed easily and quickly. Additional fastening of the reinforcement using additional fastening means, for example by tying, is also possible. This reduces the risk posed by falling objects, such as reinforcement and / or tools for their additional fastening, if present.

[0006] The holding elements of the reinforcement device according to the invention are preferably designed such that reinforcement means can be held on them in such a way that they remain in their respective position independently without external influence. The holding elements can also fully bear the weight of the reinforcement means. Preferably, the holding elements can hold the reinforcement means in such a way that they are in a stable equilibrium. The holding elements and the reinforcement means subsequently held on them can be arranged on the inner sides and / or in particular the outer sides of the frame. The reinforcement means are therefore particularly easy to install and, due to their pre-fixed position, require fewer additional fastenings during the further course of installation. Reinforcement means arranged on the outer sides rather than on the inner sides of the frame also make it possible to create more space on the inner sides of the frame for additional structural elements, e.g.B. one or more work platforms are available.

[0007] It is advantageous if the holding elements of the reinforcement device are designed such that the reinforcement can be individually accommodated therein, independently of the other reinforcements. For this purpose, at least one holding element is provided on the frame for each reinforcement. Preferably, two holding elements are provided for each reinforcement. In the case of horizontally arranged, for example rod-shaped reinforcements, such as reinforcing bars, the individual reinforcements can thus be easily placed on two holding elements, for example, while remaining in position. Several reinforcements pre-assembled to form a reinforcement assembly can also be easily secured to the frame in this way.

[0008] The frame of the reinforcement device according to the invention advantageously has first holding elements for first reinforcement means, which are to be arranged essentially horizontally and in particular to be placed on these first holding elements. The first holding elements preferably also bear laterally with at least one of their sides against a contact surface of the first reinforcement means. Thus, lateral movements of the first reinforcement means, in particular mobility in the horizontal direction and orthogonal to the longitudinal direction of the first reinforcement means, are limited. The first holding elements are designed such that first reinforcement means with a particularly essentially circular cross-section, such as reinforcing bars, can be received therein in such a way that they cannot roll off the respective first holding elements.For this purpose, the first holding elements are designed, for example, as hook-shaped projections, trough-shaped recesses, or similarly, such that the reinforcement elements held thereon do not fall off, even in the event of slight contact, accidental impact, or the like. To this end, the first holding elements preferably form a receptacle for the first reinforcement elements in a stable equilibrium, so that the reinforcement elements automatically return to their intended receiving position after any displacement. In the case of first holding elements designed, for example, as hole-like or as openings, the falling of the first reinforcement means is virtually impossible if the recesses enclose the respective first reinforcement means beyond their cross-section, in particular completely.

[0009] The first holding elements are preferably part of substantially vertically extending profiles which are fastened to the frame, in particular to vertically arranged profiles of the frame and / or are formed by the frame itself. The first reinforcement means are preferably each received by two first holding elements, which in particular lie in a common horizontal plane. These first holding elements are preferably arranged on or near a common vertical side of the frame. The first holding elements are to be arranged relative to one another with respect to the length of the first reinforcement means to be received such that the first reinforcement means can be received therein in a stable manner and remain in position. For this purpose, the preferably two first holding elements are preferably arranged near ends of the first reinforcement means which are opposite in the longitudinal extent.The first, horizontally arranged reinforcement means can thus be arranged parallel to one another and in particular one above the other in at least one vertical plane in a simple and safe manner.

[0010] The reinforcement devices or their frames can be positioned next to each other and, if necessary, connected to form a longer reinforcement device. For this purpose, the first reinforcement elements can be longer than the individual frames and extend horizontally across several of them.

[0011] It is also possible to offset horizontal reinforcement from the frames, bridging them like a joint. Both of these strengthen the stability of the structure after pouring the in-situ concrete.

[0012] The frame advantageously has second holding elements for receiving second, substantially vertically extending reinforcement means. These second reinforcement means preferably have both horizontal and vertical legs and are in particular U-shaped or L-shaped. The second holding elements are preferably part of substantially horizontally extending profiles that are attached to the frame and / or formed by the frame itself. The second holding elements are designed, for example, as recesses and / or projections. For second reinforcement means with a substantially circular cross-section, the recesses are in particular designed in the shape of a circular segment. The vertical legs of the second reinforcement means can be received on the second holding elements. The position of the second reinforcement means can thus be laterally fixed in the horizontal direction and their movement is limited.For this purpose, the second reinforcement means lie laterally, in particular in an orthogonal direction to their essentially vertical direction of extension, on a contact surface of the second holding elements.

[0013] The frame preferably has, in its upper region, essentially horizontally arranged profiles on which the horizontal legs of the second reinforcement can rest, at least in some areas. This makes it possible to fix the position of the second reinforcement in the vertical direction. The horizontally arranged profiles are preferably in a common horizontal plane and parallel to one another. In this way, the second reinforcement can advantageously be placed on these profiles of the frame in a self-supporting manner and remain in position independently. The distance between the horizontally arranged profiles or, if present, the distance between several vertical legs of the second reinforcement must be selected to suit this purpose. For example, the internal dimension between two vertical legs of a second, U-shaped reinforcement orthe length of the horizontal leg of a second, L-shaped reinforcement means is to be dimensioned larger than the external dimension between the two horizontally arranged profiles of the frame. U-shaped reinforcement means preferably form a U-shape that is open in the direction of the base of the frame. The second reinforcement means are preferably arranged next to one another and parallel to one another. The vertical sections of the second reinforcement means can do without additional fastening. In the case of U-shaped second reinforcement means, their vertical sections are preferably held on at least one holding element on two opposite sides of the frame. This fixes the position of the reinforcement means in the horizontal direction. In order to reduce the dimensions of the U-shaped reinforcement means and thus improve their handling, the vertical legs can be designed in several parts.For this purpose, the parts of the vertical legs are preferably arranged to overlap one another at least partially in the vertical direction and can be connected to one another in the overlapping area. The holding elements are preferably designed such that no additional fastening means are required even for securing multiple vertical parts of the second reinforcement means. For this purpose, at least one second holding element is designed such that the mobility of the second reinforcement means received therein in the vertical direction is limited by positive and / or non-positive connection, in particular by clamping. The second reinforcement means are thus easily held at the desired height by the second holding elements.

[0014] The reinforcement device can preferably be designed such that, together with other reinforcement means, it forms a reinforcement cage that can be installed easily and quickly. For this purpose, reinforcement means are preferably arranged on at least one outer side of the reinforcement device. The reinforcement means can also be arranged crossing one another. They can also be connected to the frame and to one another additionally, for example, by knotting, braiding, tying, or welding. The advantage here is that the reinforcement means, which may be connected to one another, do not have to form an intrinsically stable structure and can also be arranged on just one side of the frame, since the reinforcement means are supported by the frame.

[0015] It is therefore particularly advantageous for the reinforcement device according to the invention if the frame is inherently stable and preferably self-supporting. For this purpose, the frame can be designed, for example, as a rack with at least three, preferably four vertically arranged profiles that are braced together, e.g., by horizontal profiles. These can also form a fall protection device and, for this purpose, are to be fixed at a suitable distance from the support surface and / or a working height. The stability of the frame can be achieved by a suitable selection of profiles, for example, by L-, U-, T-, and / or H-shaped profiles. Additional bracing profiles can stiffen the frame.

[0016] A particular advantage of such inherently stable frames is that the connections usually required for conventional reinforcements between the individual reinforcement elements on different sides, such as S-shaped hooks, U-profiles or similar, can be dispensed with.

[0017] The frame is preferably designed to be so inherently rigid that it can be brought into its final position in a pre-assembled state as a whole, in particular including all reinforcements to be accommodated therein. For example, the pre-assembled frame can be pushed, rolled, or lifted into its final position using a lifting device. Even if no further fastening elements are necessary for the stability of the frame, the frame can be additionally fastened to its base, i.e. the substructure, to increase its stability against tipping. For additional fastening of the frame to the base, additional fastening elements can be provided in the base area of ​​the frame, for example on optionally available adjustable feet.

[0018] The reinforcement device according to the invention has a scaffold shape and thus forms a working scaffold as a reinforcement scaffold or reinforcement frame. Persons working there can stand in and on it and overcome height differences between the base of the frame and their respective working position. They can then attach reinforcements to the holding elements and, if necessary, further secure them, e.g., by tying them together. This significantly simplifies the installation of the reinforcements, improves work ergonomics, and increases safety for the workers. Should a worker nevertheless have an accident or collapse for any reason, it is considerably easier to rescue them with the reinforcement device according to the invention than with large reinforcements constructed using conventional methods.

[0019] According to the invention, one or more work platforms, for example scaffolding floors, are attached to the frame of reinforcement scaffolding at designated locations or are an integral part of the frame. Advantageously, the work platform is arranged at least substantially inside the reinforcement device and at least partially enclosed by the frame, in particular by the vertical profiles of the frame. Suitable work platforms or scaffolding floors should be able to support both the persons working there and the necessary work equipment. It is also advantageous if the height of the work platform can be variably set on the work scaffold in order to enable different working heights. This makes it possible to create ergonomic conditions for assembling the reinforcement at different heights. For this purpose, mounting points for the work platform are preferably defined on the frame at different heights.As an alternative to these mounting points on the frame, the position of the work platform can be adjusted, for example, using a lifting device such as an electric cable hoist. The work platform must then be designed to be guided accordingly within the frame. It is advantageous for the safety of the workers that, with the solution according to the invention, they do not have to climb up the reinforcement to overcome a height difference.

[0020] The reinforcement device can preferably have ladder rungs and / or ladder rung mounts. This allows height differences between, for example, the floor space and the working height or any existing work platform to be easily and safely overcome.

[0021] To facilitate easy installation of the reinforcement device even on sloping or uneven surfaces, the frame can be equipped with adjustable feet for leveling. Additional mounting points for additional mounting of the reinforcement device on the support surface can be provided to increase stability against tipping.

[0022] A significant reduction in the construction time for the concrete structure as a whole can also be achieved if the frame of the reinforcement device preferably has fastening points for the particularly detachable fixing of formwork elements and / or the frame is at least partially formed by formwork element(s). Preferably and if present, the formwork elements can be fastened to the profiles of the frame with holding elements. A cavity is formed surrounded by the formwork elements, in which the holding elements are arranged and which can be filled with a grouting or filling compound such as in-situ concrete. If the formwork elements themselves at least partially form the frame, they can also at least partially bear the weight of the reinforcement. After filling the cavity with the grouting or filling compound, the formwork elements can either be dismantled or remain as permanent formwork.In any case, the reinforcement frame with holding elements and reinforcement remains as reinforcement in the hardened casting or filling compound.

[0023] Further advantages and details of the invention emerge from the claims and embodiments shown in the drawings, which are described below; they show: Fig. 1: a perspective view of a reinforcement device according to the invention, Fig. 2: a side view of the reinforcement device according to the invention from Fig. 1, Fig. 3: a view from direction III of the subject of Fig. 1 and Fig. 2, Fig. 4: an enlargement of detail IV from Fig. 3, Fig. 5: a top view from direction V of the object from Fig. 1.

[0024] In Fig. 1 shows a reinforcement device 2 according to the invention or a reinforcement frame with a frame 4. In the embodiment shown, the frame 4 has four vertically extending profiles 6, which are connected to horizontally arranged profiles 8 like posts of a frame. In addition, in this embodiment, the frame 4 has profiles 10 that diagonally brace the posts 6 and stiffen the frame. Holding elements 12, 22, and 23 protrude from the frame 4 on two opposite sides and accommodate reinforcements 14, 24, and 24'. A work platform 16 with a scaffolding floor or insert shelf 17 (shown transparent here) was exemplarily fixed at approximately mid-height of the frame 2, but its attachment is variable. The insert shelf 17, which can be designed, for example, as a wooden plank, rests on a subframe formed by the work platform.It is advantageous if the insert shelf 17 is detachably attached to the work platform 16 so that it can be removed and reused before filling the reinforcement device. Workers can move freely on the work platform 16, assembling the reinforcement elements 14, 24, and 24' at an ergonomic height and, if provided, additionally connecting them to the frame 4 and / or to each other. In the standing area, i.e., at the bottom, the illustrated reinforcement frame has two adjustable feet 18 for leveling. These can be used to compensate for unevenness or an inclination of the support surface.

[0025] In Fig. 2, first reinforcement means 14 are clearly visible and, as shown here, are preferably designed as straight bars and arranged horizontally by being suspended in the first holding elements 10, as also in Fig. 3 and Fig. 4. A first reinforcement 14 is held on each of two first holding elements 10. The first reinforcement 14 protrudes laterally in their longitudinal direction, both beyond the first holding elements 10 and beyond the frame 4. Second reinforcement 24 is arranged substantially vertically. Fig. In the embodiment shown in Figure 2, the second reinforcement means 24 are U-shaped and advantageously rest with their horizontal legs in a self-supporting manner on two horizontally arranged profiles 8' of the frame 4. The legs of the second reinforcement means 24 can be formed in one piece or, as shown, in multiple parts. At least part of a vertical leg of the second reinforcement means is received in a second holding element. In the present exemplary embodiment, the vertical legs of the second reinforcement means are each formed in two parts. The lower part 24' of the vertical leg is received on the second holding elements 22 and 23. In an overlap region B, this lower part 24' of the vertical leg and the upper part of the vertical leg of the second reinforcement means 24 overlap.The individual parts 24 and 24' can be connected to each other in the overlapping area, for example by braiding, knotting, tying and / or welding.

[0026] Particularly when the vertically extending parts of the second, U-shaped reinforcement means are designed in multiple parts, it is advantageous if at least the lower parts 24' remain in position and are fixed to the holding elements. For this purpose, at least one of the second holding elements 22, 23 is preferably designed such that it can fix these parts of the second reinforcement means in their vertical position. In the present exemplary embodiment, the upper second holding element 23 is designed as a fixing holding element. For this purpose, the upper holding element 23 can be arranged at an incline such that the second reinforcement means 24', which in the present case is ribbed, rest on the upper second holding elements 23 with their ribs inclined relative to the longitudinal axis of the reinforcement means. Alternatively or additionally, the second reinforcement means 24' can be connected to the upper second holding elements 23, for example by clamping.For this purpose, when the second reinforcement 24' is oriented vertically, a sufficiently high clamping force acts on this second reinforcement 24' from two opposite edges of the second holding element 23 to support the weight of the second reinforcement 24'. To change the height of the second reinforcement 24', it can be moved from its vertical orientation to an inclined position corresponding to the inclination of the upper holding element 23, so that the clamping force is reduced. For secure fixation, the second reinforcement 24' can be fastened with additional fastening means (not shown). For this purpose, for example, an additional reinforcement rod or similar can rest on the profile 23', to which the second reinforcement 24' can be tied, for example with comparatively thick wire that can support the weight of the reinforcement.The fixation of the reinforcement means enables simple positioning and time-saving installation of the second reinforcement means 24' by individual persons and / or with only one hand, without the need to additionally hold and / or fasten the second reinforcement means 24'. It can also be seen that the first reinforcement means 14 and the second reinforcement means 24 or 24' each intersect in areas C. In these areas C, the reinforcement means 14 and 24 or 24' can also be connected to each other, for example, by tying.

[0027] The Fig. 3 and Fig. 4 show, in particular, first holding elements 12 with first reinforcement means 14 stably arranged thereon and remaining in their position. The first holding elements 12 are part of vertically arranged profiles 12' that are fixed to the frame 4. The profiles 12' each have a plurality of holding elements 12. The holding elements 12 can alternatively or additionally be formed by the vertical profiles 6 of the frame 4. To avoid an unwieldy size of the individual profiles 12', they can be designed in several parts, particularly in the vertical direction of the reinforcement device 2. The first reinforcement means 14 can also bridge a plurality of reinforcement devices 2 arranged one behind the other in their longitudinal direction.For this purpose, they can be considerably longer than the reinforcement device 2 itself or, for example, like a joint connection, always extend from half of one reinforcement device 2 to half of the adjacent reinforcement device 2.

[0028] Furthermore, Fig. 3 and Fig. 4, the second reinforcement elements 24, each of which rests with its horizontal leg on the upper side of the horizontally arranged profiles 8' of the frame 4. The radii in the corners of the U-shaped, second reinforcement elements 24 are suitably dimensioned for this purpose.

[0029] Also Fig.Figure 5 shows a plan view of the second reinforcement means 24, which rest on the horizontally arranged profiles 8' of the frame 4, which are parallel to one another and in particular lie in a common horizontal plane. In the illustrated embodiment, the second holding elements 23 are part of horizontally extending profiles 23'. Furthermore, it can be seen that the upper parts of the vertical legs of the second reinforcement means 24 and the lower parts 24' of the vertical legs are each arranged directly next to one another in order to be easily connected to one another.

[0030] The reinforcement frame 2 according to the invention and shown here in a preferred embodiment has great advantages with regard to occupational safety and also considerably simplifies and accelerates the construction of large reinforcements in particular.

Claims

[1] Reinforcement device (2) which forms at least part of a reinforcement for a concrete structure, with a frame (4) which has holding elements (12, 22, 23) at several positions, which are designed in such a way that reinforcing means (14, 24, 24') can be fixedly received on them in a predetermined position relative to the frame (4), characterized by that the reinforcement device (2) forms a working scaffold and that at least one working platform (16) is fixed to the frame (4) and / or the frame (4) has receiving points for fixing at least one working platform (16). [2] Reinforcing device (2) according to claim 1, characterized by that the holding elements (12, 22, 23) are designed in such a way that reinforcement means (14, 24, 24') can be received thereon independently and remain in their respective position. [3] Reinforcing device (2) according to one of the preceding claims, characterized bythat the holding elements (12, 22, 23) are designed such that the reinforcement means (14, 24, 24') can be individually received thereon independently of the other reinforcement means (14, 24, 24'), for which purpose at least one holding element (12, 22, 23), in particular two holding elements (12, 22, 23), are provided for each reinforcement means (14, 24, 24'). [4] Reinforcing device (2) according to one of the preceding claims, characterized by that the frame (4) has first holding elements (12) for receiving first, horizontally arranged reinforcement means (14). [5] Reinforcing device (2) according to one of the preceding claims, characterized by that the frame (4) has second holding elements (22, 23) for receiving second, substantially vertically extending reinforcement means (24, 24'). [6] Reinforcing device (2) according to one of the preceding claims, characterized bythat it forms a reinforcement cage together with other reinforcement means (14, 24, 24'). [7] Reinforcing device (2) according to one of the preceding claims, characterized by that the frame (4) is inherently stable and preferably self-standing. [8] Reinforcing device (2) according to one of the preceding claims, characterized by that the height of the working platform (16) can be variably set relative to the base of the work scaffold in order to enable different working heights. [9] Reinforcing device (2) according to one of the preceding claims, characterized by that the frame (4) has ladder rungs and / or receptacles for ladder rungs. [10] Reinforcing device (2) according to one of the preceding claims, characterized by that the frame (4) has adjustable feet (18) for leveling. [11] Reinforcing device (2) according to one of the preceding claims, characterized bythat the frame (4) has fastening points for, in particular detachably, fixing formwork elements and / or is at least partly formed by formwork elements. [12] Concrete structure with reinforcement, characterized by that the reinforcement is formed at least in part by a reinforcement device (2) according to one of claims 1 to 11.

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