EP0394815B1 - Steel reinforcing cage - Google Patents
Steel reinforcing cage Download PDFInfo
- Publication number
- EP0394815B1 EP0394815B1 EP90107309A EP90107309A EP0394815B1 EP 0394815 B1 EP0394815 B1 EP 0394815B1 EP 90107309 A EP90107309 A EP 90107309A EP 90107309 A EP90107309 A EP 90107309A EP 0394815 B1 EP0394815 B1 EP 0394815B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- reinforcing
- profiles
- bends
- profile
- reinforcement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 55
- 229910000831 Steel Inorganic materials 0.000 title claims abstract 16
- 239000010959 steel Substances 0.000 title claims abstract 16
- 230000003068 static effect Effects 0.000 claims abstract description 39
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 27
- 238000004519 manufacturing process Methods 0.000 claims description 19
- 238000005452 bending Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 6
- 238000009435 building construction Methods 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 2
- 238000010276 construction Methods 0.000 abstract description 8
- 230000002787 reinforcement Effects 0.000 description 113
- 239000004567 concrete Substances 0.000 description 8
- 238000003466 welding Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
- E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
- E04C5/0604—Prismatic or cylindrical reinforcement cages composed of longitudinal bars and open or closed stirrup rods
- E04C5/0609—Closed cages composed of two or more coacting cage parts, e.g. transversally hinged or nested parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F27/00—Making wire network, i.e. wire nets
- B21F27/12—Making special types or portions of network by methods or means specially adapted therefor
- B21F27/121—Making special types or portions of network by methods or means specially adapted therefor of tubular form, e.g. as reinforcements for pipes or pillars
- B21F27/125—Making special types or portions of network by methods or means specially adapted therefor of tubular form, e.g. as reinforcements for pipes or pillars by attaching individual stirrups to longitudinal wires
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F27/00—Making wire network, i.e. wire nets
- B21F27/12—Making special types or portions of network by methods or means specially adapted therefor
- B21F27/121—Making special types or portions of network by methods or means specially adapted therefor of tubular form, e.g. as reinforcements for pipes or pillars
- B21F27/127—Making special types or portions of network by methods or means specially adapted therefor of tubular form, e.g. as reinforcements for pipes or pillars by bending preformed mesh
Definitions
- the invention relates to a reinforcement cage made of rebar for building and / or civil engineering according to the preamble of claim 1 and a method for its production.
- reinforcement cages for concrete construction are manufactured in such a way that the reinforcement brackets are individually machine-bent, manually aligned with each other in a corresponding number and at any point where the reinforcement brackets intersect or touch with the static reinforcing steel profiles Wiring.
- the known reinforcement cages are generally manufactured on construction sites, since they are too unstable for transport because of the wiring of the reinforcement stirrups with the static reinforcing steel profiles.
- the reinforcement cages are poured into concrete after alignment on the construction site to the finished structure.
- the manually manufactured basket is very unstable because the reinforcement brackets are wired to the static reinforcing steel profiles. Therefore, errors can occur due to improper concreting or improper handling of the reinforcement cages by the personnel.
- Another disadvantage is that, due to the wire connections between the reinforcement brackets and the static reinforcing steel profiles, it is hardly possible to transport larger reinforcement cages to construction sites, as the reinforcement brackets can jam with one another and to the static reinforcing steel profiles or from their position under the shocks during transport brought and a final satisfactory leveling on the construction site before concreting is generally not possible.
- EP-A-0 136 283 describes a reinforcement cage made of rebar for building or civil engineering, which has reinforcement brackets and static reinforcing steel profiles, a plurality of reinforcement profiles having a U-shaped lock in their end region and with perpendicular to the reinforcement profiles running centering and assembly profiles form a reinforcement bracket group and the reinforcement bracket group is connected to the static reinforcing steel profiles at predetermined locations to form the reinforcement cage.
- Each of the reinforcement cages described in EP-A-0 136 283 always consists of a plurality of reinforcement bracket groups which are connected to one another in the area of their locks by common pull-in bars. With such reinforcement cages, at least two reinforcement bracket groups are always necessary to form a reinforcement cage.
- the advantage of this two-part or multi-part design is undoubtedly the favorable stackability, which can be less favorable and, above all, not so space-saving with "all-round" reinforcement cages.
- the dimensions of the individual reinforcement bracket groups must always be matched to one another so that the associated locks can be connected to a common pull-in bar when they are assembled into reinforcement cages.
- a reinforcement cage with the features of the preamble of claim 1 is known from US-A-3375632.
- both centering and mounting profiles are arranged outside the lock area on the outside of the bracket and the lock consists of two U-shaped hooks. This arrangement is disadvantageous in terms of bending technology.
- the invention has for its object to provide a reinforcement cage that is easy to bend and with a few basic forms of bracket groups allows a variety of possible basket sizes with space-saving storage and transport options.
- each reinforcement bracket group has exactly two common centering and mounting profiles) that the lock of the reinforcement profiles bent to form a reinforcement bracket group has a U-shaped hook at one end of the reinforcement profile and is formed by an angle hook at the other end of the reinforcement profile, that each reinforcement bracket is essentially bent into a rectangle, that the first centering and mounting profile is arranged on the inside of the U-shaped hook and is encompassed by the angle hook and that the further centering and mounting profile is arranged inside on a side of the rectangle adjacent to the lock outside the area of the lock.
- the reinforcement stirrups made of bent reinforcing steel and the centering and assembly profiles connected to them form a dimensionally stable bond, although the connection of the individual curved reinforcement profiles is only made in the area of the lock and the adjacent rectangle side. It can quickly be seen that either a finished reinforcement cage can be made from a single reinforcement bracket group by inserting the static reinforcing steel profiles in their corner areas and, if necessary, at additional locations, and connecting them to the curved reinforcement profiles.
- the reinforcement cage according to the invention can also consist of a plurality of reinforcement bracket groups, which - depending on the desired dimensions of a finished reinforcement cage - are first nested and then connected to a multi-section or angled reinforcement cage by means of the inserted static reinforcing steel profiles.
- reinforcement cages of great lengths by laterally displacing a plurality of individual reinforcement bracket groups and, if necessary, additionally nesting them with other reinforcement bracket groups, without having to change the basic shape of a reinforcement bracket group.
- each reinforcement bracket group is connected to one another only in the area of its lock and the adjacent rectangular side by means of centering and mounting profiles. This is only possible with rebar profiles made of rebar; the use of ring material does not lead to the desired success due to torsion.
- the centering and assembly profiles are welded to the reinforcement stirrups outside the bending points.
- the reinforcement stirrups are welded and / or wired to the static reinforcing steel profiles at predetermined locations. It was shown that it is no longer necessary to connect the reinforcement brackets to the static reinforcing steel profiles at all points without affecting the structural safety. This is particularly the case when the connection is made by spot welding at the connection points.
- the reinforcement bracket groups are welded and / or wired to the static reinforcing steel profiles at predetermined locations.
- the object of creating a method for producing the reinforcement cage is achieved according to the invention in that a number of reinforcing bar profiles corresponding to the number of reinforcement brackets is aligned with one another, the aligned reinforcing bar profiles with exactly one centering and assembly profile in the area of the lock and outside of this area with exactly one additional centering and mounting profile are welded to an aligned profile group, the aligned profile group is bent into a rectangular shape so that the second centering and assembly profile comes to lie outside the area of the lock, and the reinforcement bracket group with the static reinforcing steel profiles to that Reinforcement cage can be connected.
- centering and assembly profiles are welded to all reinforcing bar profiles of a reinforcement bracket group that intersect with them, so that during production, storage, transport and assembly, as well as during concreting, the centering ability is ensured until the concrete solidifies .
- one of the number of reinforcement brackets of each reinforcement bracket group and a number of reinforcement bracket groups corresponding to the number of reinforcement bracket profiles are aligned to form the groups, the aligned reinforcement bar profiles of each group with exactly one Centering and assembly profile in the area of the lock and outside of this area welded with exactly one further centering and assembly profile to form a profile group, the aligned profile groups bent to form reinforcement bracket groups to form a rectangular shape such that the second centering and assembly profile outside the area of the castle comes to rest, the reinforcement bracket groups aligned to each other and connected with static reinforcing steel profiles to the reinforcement cage at the specified points.
- bracket groups with the static reinforcing steel profiles are welded or wired together at the predetermined locations.
- Figures 1a to 1f show a perspective view of the manufacture of a reinforcement cage 1 (Fig. 2).
- centering and mounting profile 3 is arranged in the front area and the centering and mounting profile 4 in the rear area at right angles to the reinforcing bar profiles, so that they cross at right angles.
- Fig. 1g shows an enlarged view of the lock of a reinforcement bracket (detail X from Fig. 1f).
- FIG. 2 shows a reinforcement cage 13 consisting of two reinforcement bracket groups 11 and 12.
- the reinforcement bracket group 11 consists of the two centering and mounting profiles 14 and 15 and the reinforcement bracket 16
- the reinforcement bracket group 12 consists of the two centering and mounting profiles 17 and 18 and the reinforcement bracket 19.
- the two reinforcement bracket groups 11 and 12 are arranged at a predetermined distance from one another. Then the static reinforcing steel profiles 20 are arranged according to the specifications for the two reinforcement bracket groups and connected to them at the specified contact and crossing points by spot welding to form the reinforcement cage. This can be done in the production facility or only at the construction site.
- These reinforcement baskets are type baskets and serve the individual simplification of static reinforcement occurrences during manufacture and assembly.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
- Rod-Shaped Construction Members (AREA)
- Piles And Underground Anchors (AREA)
Abstract
Description
Die Erfindung betrifft einen Bewehrungskorb aus Betonstabstahl für den Hoch- und/oder den Tiefbau gemäß dem Oberbegriff von Patentanspruch 1 sowie Verfahren zu seiner Herstellung.The invention relates to a reinforcement cage made of rebar for building and / or civil engineering according to the preamble of claim 1 and a method for its production.
Im Hoch- und Tiefbau werden Bewehrungskörbe für den Betonbau in der Weise hergestellt, daß die Bewehrungsbügel einzeln maschinell gebogen werden, in entsprechender Anzahl zueinander manuell ausgerichtet und an jeder Stelle, an denen sich die Bewehrungsbügel mit den statischen Betonstahlprofilen kreuzen bzw. berühren mit diesen durch Verdrahten verbunden werden.In building construction and civil engineering, reinforcement cages for concrete construction are manufactured in such a way that the reinforcement brackets are individually machine-bent, manually aligned with each other in a corresponding number and at any point where the reinforcement brackets intersect or touch with the static reinforcing steel profiles Wiring.
Das Fertigen der bekannten Bewehrungskörbe erfolgt im allgemeinen an den Baustellen, da sie für den Transport wegen der Verdrahtung der Bewehrungsbügel mit den statischen Betonstahlprofilen zu instabil sind. Die Bewehrungskörbe werden nach dem Ausrichten auf der Baustelle zu dem fertigen Bauwerk in Beton eingegossen.The known reinforcement cages are generally manufactured on construction sites, since they are too unstable for transport because of the wiring of the reinforcement stirrups with the static reinforcing steel profiles. The reinforcement cages are poured into concrete after alignment on the construction site to the finished structure.
Dieses manuelle Fertigen der Bewehrungskörbe führt jedoch zu schwerwiegenden Nachteilen:
Trotz großer Sorgfalt bei der manuellen Fertigung ist der Streubereich der Maßhaltigkeit sehr groß.However, this manual production of the reinforcement cages leads to serious disadvantages:
Despite great care in manual production, the range of dimensional accuracy is very large.
Ungenauigkeiten treten bereits auf bei der Fertigung der einzelnen Bewehrungsbügel.Inaccuracies already occur during the manufacture of the individual reinforcement brackets.
Ungenauigkeiten treten weiterhin auf bei der Montage der Bewehrungsbügel und der statischen Betonstahlprofile zu den Bewehrungskörben.Inaccuracies continue to occur when installing the reinforcement stirrups and the static reinforcing steel profiles to the reinforcement cages.
Ungenauigkeiten treten zusätzlich auf bei Montage der Bewehrungskörbe in die Bewehrungssysteme.Inaccuracies also occur when the reinforcement cages are installed in the reinforcement systems.
Die Folgen sind, daß die vorgegebenen Betondeckungen zum Teil unter- bzw. überschritten werden und daß der rechnerische statische Querschnitt im allgemeinen an den verschiedenen Stellen unterschiedlich ist. Außerdem ist die Transportfähigkeit sehr begrenzt, daher ist eine Vormontage in geschlossenen Räumen fast unmöglich, so daß eine Fertigung in Schlechtwetterperioden ausfällt.The consequences are that the specified concrete coverings are sometimes fallen short of or exceeded and that the calculated static cross section is generally different at the various points. In addition, the transportability is very limited, so pre-assembly in closed rooms is almost impossible, so that production fails in bad weather periods.
Der manuell gefertigte Korb ist sehr instabil, da die Bewehrungsbügel mit den statischen Betonstahlprofilen verdrahtet sind. Es können deshalb Fehler durch unsachgemäßes Betonieren oder durch unsachgemäßen Umgang des Personals mit den Bewehrungskörben auftreten.The manually manufactured basket is very unstable because the reinforcement brackets are wired to the static reinforcing steel profiles. Therefore, errors can occur due to improper concreting or improper handling of the reinforcement cages by the personnel.
Die Folge ist, daß nach dem Vergießen des Betons der geforderte Betondeckungsabstand oft unterschritten wird, so daß Feuchtigkeit zu den Bewehrungsbügeln diffundieren kann und bei Kälteeinwirkung ein Abplatzen des Betons im Bereich der unterschrittenen Betondeckung vorkommt. Diese freiliegenden Abschnitte der Bewehrungsbügel lösen das Durchrosten des freiliegenden Bewehrungssystems aus, so daß die statische Tragfähigkeit dieser Bauwerke in Frage gestellt bzw. dann nicht mehr gegeben ist.The result is that after pouring the concrete, the required concrete cover distance is often fallen short of, so that moisture can diffuse to the reinforcement stirrups and, when exposed to cold, the concrete flakes off in the area below the concrete cover. These exposed sections of the reinforcement stirrups cause rusting through of the exposed reinforcement system, so that the static load-bearing capacity of these structures is questioned or then no longer exists.
Die aufwendigen und umfassenden Sanierungsmaßnahmen zeigen, daß man diese Probleme trotz der jahrzehntelangen Erfahrungen mit bewehrten Beton bis heute noch nicht in den Griff bekommen hat.The complex and extensive renovation measures show that despite decades of experience with reinforced concrete, these problems have not yet been tackled.
Die Montage der Bewehrungsbügel und der statischen Betonstahlprofile zu den Bewehrungskörben ist eine höchst lohnintensive und damit kostenaufwendige Arbeit.The assembly of the reinforcement brackets and the static reinforcing steel profiles to the reinforcement cages is a highly wage-intensive and therefore costly work.
Weiterhin erfordern bereits die Ungenauigkeiten bei der Fertigung und bei der Montage einen erheblichen Sicherheitszuschlag.Furthermore, the inaccuracies in the manufacture and assembly require a considerable safety margin.
Ein weiterer Nachteil besteht darin, daß es aufgrund der Drahtverbindungen zwischen den Bewehrungsbügeln und den statischen Betonstahlprofilen kaum möglich ist, größere Bewehrungskörbe an Baustellen zu transportieren, da unter den Erschütterungen während des Transportes die Bewehrungsbügel untereinander und zu den statischen Betonstahlprofilen verkanten bzw. aus ihrer Lage gebracht werden und ein abschließendes zufriedenstellendes Richten auf der Baustelle vor dem Betonieren im allgemeinen nicht möglich ist.Another disadvantage is that, due to the wire connections between the reinforcement brackets and the static reinforcing steel profiles, it is hardly possible to transport larger reinforcement cages to construction sites, as the reinforcement brackets can jam with one another and to the static reinforcing steel profiles or from their position under the shocks during transport brought and a final satisfactory leveling on the construction site before concreting is generally not possible.
Aus der EP-A-0 136 283 ist ein Bewehrungskorb aus Betonstabstahl für den Hoch- oder den Tiefbau beschrieben, der Bewehrungsbügel und statische Betonstahlprofile aufweist, wobei eine Mehrzahl von Bewehrungsprofilen in ihrem Endbereich ein U-förmiges Schloß aufweisen und mit senkrecht zu den Bewehrungsprofilen verlaufenden Zentrier- und Montageprofilen eine Bewehrungsbügelgruppe bilden und wobei die Bewehrungsbügelgruppe mit den statischen Betonstahlprofilen an vorgegebenen Stellen zu dem Bewehrungskorb verbunden ist.EP-A-0 136 283 describes a reinforcement cage made of rebar for building or civil engineering, which has reinforcement brackets and static reinforcing steel profiles, a plurality of reinforcement profiles having a U-shaped lock in their end region and with perpendicular to the reinforcement profiles running centering and assembly profiles form a reinforcement bracket group and the reinforcement bracket group is connected to the static reinforcing steel profiles at predetermined locations to form the reinforcement cage.
Jeder der in der EP-A-0 136 283 beschriebenen Bewehrungskörbe besteht stets aus einer Mehrzahl von Bewehrungsbügelgruppen, welche im Bereich ihrer Schlösser durch gemeinsame Einziehstäbe miteinander verbunden sind. Bei solchen Bewehrungskörben sind also stets wenigstens zwei Bewehrungsbügelgruppen notwendig, um einen Bewehrungskorb zu bilden. Der Vorteil dieser zwei- oder mehrteiligen Ausführung besteht zweifelsohne in der günstigen Stapelbarkeit, welche bei "rundum geschlossenen" Bewehrungskörben ungünstiger und vor allem lange nicht so platzsparend erfolgen kann. Darüber hinaus müssen die einzelnen Bewehrungsbügelgruppen in ihren Abmessungen stets aufeinander abgestimmt sein, damit die zugehörigen Schlösser beim Zusammensetzen zu Bewehrungskörben jeweils mit einem gemeinsamen Einziehstab verbunden werden können.Each of the reinforcement cages described in EP-A-0 136 283 always consists of a plurality of reinforcement bracket groups which are connected to one another in the area of their locks by common pull-in bars. With such reinforcement cages, at least two reinforcement bracket groups are always necessary to form a reinforcement cage. The advantage of this two-part or multi-part design is undoubtedly the favorable stackability, which can be less favorable and, above all, not so space-saving with "all-round" reinforcement cages. In addition, the dimensions of the individual reinforcement bracket groups must always be matched to one another so that the associated locks can be connected to a common pull-in bar when they are assembled into reinforcement cages.
Ein Bewehrungskorb mit den Merkmalen des Oberbegriffs des Patentanspruchs 1 ist durch US-A-3375632 bekannt. Bei diesem Bewehrungskorb sind beide Zentrier- und Montageprofile außerhalb des Schloßbereichs auf der Außenseite des Bügels angeordnet und das Schloß besteht aus zwei U-förmig gebogenen Haken. Diese Anordnung ist biegetechnisch von Nachteil.A reinforcement cage with the features of the preamble of claim 1 is known from US-A-3375632. In this reinforcement cage, both centering and mounting profiles are arranged outside the lock area on the outside of the bracket and the lock consists of two U-shaped hooks. This arrangement is disadvantageous in terms of bending technology.
Ausgehend von diesem gattungsbildenden Stand der Technik, liegt der Erfindung die Aufgabe zugrunde, einen Bewehrungskorb zu schaffen, der einfach zu biegen ist und bei wenigen Grundformen von Bügelgruppen eine Vielzahl möglicher Korbgrößen bei gleichzeitig platzsparenden Lagerungs- und Transportmöglichkeiten zuläßt.Starting from this generic state of the art, the invention has for its object to provide a reinforcement cage that is easy to bend and with a few basic forms of bracket groups allows a variety of possible basket sizes with space-saving storage and transport options.
Diese Aufgabe wird bei einem Bewehrungskorb der zuvor genannten Art nach dem Kennzeichnungsteil des Patentanspruchs 1 dadurch gelöst, daß jede Bewehrungsbügelgruppe genau zwei gemeinsame Zentrier- und Montageprofile) aufweist, daß das Schloß der zu einer Bewehrungsbügelgruppe gebogenen Bewehrungsprofile von einem U-förmigen Haken an einem Ende des Bewehrungsprofils und von einem Winkelhaken am anderen Ende des Bewehrungsprofils gebildet wird, daß jeder Bewehrungsbügel im wesentlichen zu einem Rechteck gebogen ist, daß jeweils das erste Zentrier- und Montageprofil auf der Innenseite des U-förmigen Hakens angeordnet ist und von dem Winkelhaken umgriffen wird und daß das weitere Zentrier- und Montageprofil innen auf einer an das Schloß angrenzenden Seite des Rechteckes außerhalb des Bereiches des Schlosses angeordnet ist.This object is achieved in a reinforcement cage of the aforementioned type according to the characterizing part of claim 1 in that each reinforcement bracket group has exactly two common centering and mounting profiles) that the lock of the reinforcement profiles bent to form a reinforcement bracket group has a U-shaped hook at one end of the reinforcement profile and is formed by an angle hook at the other end of the reinforcement profile, that each reinforcement bracket is essentially bent into a rectangle, that the first centering and mounting profile is arranged on the inside of the U-shaped hook and is encompassed by the angle hook and that the further centering and mounting profile is arranged inside on a side of the rectangle adjacent to the lock outside the area of the lock.
Überraschenderweise bilden die Bewehrungsbügel aus gebogenem Betonstabstahl und die mit ihnen verbundenen Zentrier- und Montageprofile einen formstabilen Verbund, obwohl die Verbindung der einzelnen gebogenen Bewehrungsprofile nur im Bereich des Schlosses und der angrenzenden Rechteckseite erfolgt. Es ist schnell ersichtlich, daß sich entweder ein fertiger Bewehrungskorb aus einer einzigen Bewehrungsbügelgruppe herstellen läßt, indem in deren Eckbereichen und gegebenenfalls an zusätzlichen Stellen die statischen Betonstahlprofile eingeschoben und mit den gebogenen Bewehrungsprofilen verbunden werden. Dadurch, daß die einzelnen Bewehrungsprofile gewissermaßen parallele "Rippen" bilden und die Verbindung lediglich im Schloßbereich und der angrenzenden Rechteckseite erfolgt (wie bei einer "Wirbelsäule"), lassen sich mehrere erfindungsgemäße Bewehrungsbügelgruppen ineinander verschachtelt und damit äußert platzsparend zwischenlagern und zur Baustelle transportieren.Surprisingly, the reinforcement stirrups made of bent reinforcing steel and the centering and assembly profiles connected to them form a dimensionally stable bond, although the connection of the individual curved reinforcement profiles is only made in the area of the lock and the adjacent rectangle side. It can quickly be seen that either a finished reinforcement cage can be made from a single reinforcement bracket group by inserting the static reinforcing steel profiles in their corner areas and, if necessary, at additional locations, and connecting them to the curved reinforcement profiles. Because the individual reinforcement profiles form, so to speak, parallel "ribs" and the connection only takes place in the lock area and the adjacent side of the rectangle (as with a "spine"), several reinforcement bracket groups according to the invention can be nested one inside the other and thus space-savingly stored and transported to the construction site.
Der erfindungsgemäße Bewehrungskorb kann auch aus einer Mehrzahl von Bewehrungsbügelgruppen bestehen, welche - je nach den gewünschten Abmessungen eines fertigen Bewehrungskorbes - zunächst ineinander geschachtelt und dann mittels der eingeschobenen statischen Betonstahlprofile zu einem mehrschnittigen oder winkelförmigen Bewehrungskorb verbunden werden. Darüber hinaus ist es möglich, durch seitliches Versetzen einer Mehrzahl einzelner Bewehrungsbügelgruppen und gegebenenfalls zusätzliches Ineinanderschachteln mit weiteren Bewehrungsbügelgruppen Bewehrungskörbe großer Längen herzustellen, ohne die Grundform einer Bewehrungsbügelgruppe ändern zu müssen.The reinforcement cage according to the invention can also consist of a plurality of reinforcement bracket groups, which - depending on the desired dimensions of a finished reinforcement cage - are first nested and then connected to a multi-section or angled reinforcement cage by means of the inserted static reinforcing steel profiles. In addition, it is possible to move reinforcement cages of great lengths by laterally displacing a plurality of individual reinforcement bracket groups and, if necessary, additionally nesting them with other reinforcement bracket groups, without having to change the basic shape of a reinforcement bracket group.
Jede Bewehrungsbügelgruppe wird bei vorliegender Erfindung nur im Bereich ihres Schlosses und der angrenzenden Rechteckseite durch Zentrier- und Montageprofile miteinander verbunden. Dies ist nur mit Betonstahlprofilen aus Betonstabstahl möglich; die Verwendung von Ringmaterial führt aufgrund auftretender Torsion nicht zum gewünschten Erfolg.In the present invention, each reinforcement bracket group is connected to one another only in the area of its lock and the adjacent rectangular side by means of centering and mounting profiles. This is only possible with rebar profiles made of rebar; the use of ring material does not lead to the desired success due to torsion.
In einer weiteren Ausgestaltung der Erfindung sind die Zentrier- und Montageprofile außerhalb der Biegestellen mit den Bewehrungsbügeln verschweißt. Durch diese Maßnahmen wird erreicht, daß das Biegen exakt und problemlos durchgeführt werden kann.In a further embodiment of the invention, the centering and assembly profiles are welded to the reinforcement stirrups outside the bending points. These measures ensure that the bending can be carried out precisely and without problems.
In einer noch weiteren Ausgestaltung der Erfindung sind die Bewehrungsbügel an vorgegebenen Stellen mit den statischen Betonstahlprofilen verschweißt und/oder verdrahtet. Es zeigte sich nämlich, daß es ohne Beeinträchtigung der baulichen Sicherheit nicht mehr erforderlich ist, die Bewehrungsbügel an allen Stellen mit den statischen Betonstahlprofilen zu verbinden. Dies ist insbesondere dann der Fall, wenn an den Verbindungsstellen die Verbindung durch Punktschweißen hergestellt ist.In yet another embodiment of the invention, the reinforcement stirrups are welded and / or wired to the static reinforcing steel profiles at predetermined locations. It was shown that it is no longer necessary to connect the reinforcement brackets to the static reinforcing steel profiles at all points without affecting the structural safety. This is particularly the case when the connection is made by spot welding at the connection points.
Es zeigte sich, daß auch dann, wenn der erfindungsgemäße Bewehrungskorb nicht an allen Stellen punktgeschweißt ist, er bei Belastungen seine ursprüngliche Form bzw. Gestalt wieder annimmt, sofern seine Elastizitätsgrenze nicht überschritten wird.It was found that even if the reinforcement cage according to the invention is not spot-welded at all points, it assumes its original shape or shape when subjected to loads, provided its elastic limit is not exceeded.
In einer noch weiteren Ausgestaltung der Erfindung sind mehrere Bewehrungsbügelgruppen mit statischen Betonstahlprofilen an vorgegebenen Stellen mit statischen Betonstahlprofilen zu dem Bewehrungskorb verbunden.In a still further embodiment of the invention, several reinforcement bracket groups with static reinforcing steel profiles are connected to the reinforcing cage at predetermined locations with static reinforcing steel profiles.
Die genaue Fertigung der einzelnen Bügelgruppen und die genaue Vorgabe und Orientierung der statischen Betonstahlprofile sowie die Ausrichtung der Bewehrungsbügelgruppen zu ihnen sichern die genaue Fertigung von Bewehrungskörben mit kompliziertem Aufbau.The precise manufacture of the individual bracket groups and the exact specification and orientation of the static reinforcing steel profiles as well as the alignment of the reinforcement bracket groups to them ensure the precise manufacture of reinforcement cages with a complicated structure.
Erfindungsgemäß sind die Bewehrungsbügelgruppen an vorgegebenen Stellen mit den statischen Betonstahlprofilen verschweißt und/oder verdrahtet.According to the invention, the reinforcement bracket groups are welded and / or wired to the static reinforcing steel profiles at predetermined locations.
Aufgrund der Maßhaltigkeit beim Fertigen der einzelnen Bewehrungsbügelgruppen ist es nämlich ohne weiteres möglich, nach dem Baukastenprinzip aus einzelnen Bewehrungskörben Gesamtkörbe aufzubauen, die mit den vorgegebenen Abmessungen übereinstimmen. Hierbei kann es sich um beliebige geometrische Figuren handeln, wobei die einzelnen Bewehrungskörbe für sich allein einfach herzustellen sind und - aneinandergefügt und/oder ineinander verschachtelt - komplizierte Bewehrungseinheiten bilden.Due to the dimensional accuracy during the manufacture of the individual reinforcement bracket groups, it is in fact easily possible to use the modular principle to build up complete baskets from individual reinforcement cages, which correspond to the specified dimensions. These can be any geometrical figures, the individual reinforcement cages being simple to produce on their own and, when joined together and / or nested, form complicated reinforcement units.
Die Aufgabe, ein Verfahren zum Herstellen des Bewehrungskorbes zu schaffen, wird erfindungsgemäß dadurch gelöst, daß eine der Anzahl der Bewehrungsbügel entsprechende Anzahl von Betonstabstahlprofilen zueinander ausgerichtet wird, die zueinander ausgerichteten Betonstabstahlprofile mit genau einem zentrier- und Montageprofil im Bereich des Schlosses und außerhalb dieses Bereiches mit genau einem weiteren Zentrier- und Montageprofil zu einer ausgerichteten Profilgruppe verschweißt werden, die ausgerichtete Profilgruppe unter gemeinsamer Bildung der Bewehrungsbügel zu einer Bewehrungsbügelgruppe derart zu einer Rechteckform gebogen wird, daß das zweite Zentrier- und Montageprofil außerhalb des Bereiches des Schlosses zu liegen kommt, und die Bewehrungsbügelgruppe mit den statischen Betonstahlprofilen zu dem Bewehrungskorb verbunden werden.The object of creating a method for producing the reinforcement cage is achieved according to the invention in that a number of reinforcing bar profiles corresponding to the number of reinforcement brackets is aligned with one another, the aligned reinforcing bar profiles with exactly one centering and assembly profile in the area of the lock and outside of this area with exactly one additional centering and mounting profile are welded to an aligned profile group, the aligned profile group is bent into a rectangular shape so that the second centering and assembly profile comes to lie outside the area of the lock, and the reinforcement bracket group with the static reinforcing steel profiles to that Reinforcement cage can be connected.
Erfindungswesentlich ist, daß die Zentrier- und Montageprofile mit allen sich mit ihnen kreuzenden Betonstabstahlprofilen einer zu bildenden Bewehrungsbügelgruppe verschweißt werden, so daß während der Produktion, der Lagerung, des Transportes und der Montage, sowie beim Betonieren die Zentrierfähigkeit bis zum Erstarren des Betons gewährleistet ist. Dies hat zwangsläufig zur Folge, daß die statischen Betonstahlprofile sich wie vorgegeben innerhalb des Bewehrungssystems zentrieren.It is essential to the invention that the centering and assembly profiles are welded to all reinforcing bar profiles of a reinforcement bracket group that intersect with them, so that during production, storage, transport and assembly, as well as during concreting, the centering ability is ensured until the concrete solidifies . This inevitably means that the static reinforcing steel profiles are centered within the reinforcement system as specified.
Erfindungsgemäß werden die Bewehrungsbügel und die statischen Betonstahlprofile an den vorgegebenen Stellen miteinander verschweißt oder verdrahtet.According to the reinforcement stirrup and the static reinforcing steel profiles are welded or wired together at the predetermined locations.
Zum Herstellen von Bewehrungskörben von kompliziertem Aufbau bzw. komplizierter Geometrie werden in einer weiteren Ausgestaltung der Erfindung eine der Anzahl der Bewehrungsbügel jeder Bewehrungsbügelgruppe und eine der Anzahl der Bewehrungsbügelgruppen entsprechende Anzahl von Betonstabstahlprofilen unter Bildung der Gruppen ausgerichtet, die zueinander ausgerichteten Betonstabstahlprofile jeder Gruppe mit genau einem Zentrier- und Montageprofil im Bereich des Schlosses und außerhalb dieses Bereiches mit genau einem weiteren Zentrier- und Montageprofil zu einer Profilgruppe verschweißt, die ausgerichteten Profilgruppen unter Bildung der Bewehrungsbügel zu Bewehrungsbügelgruppen derart zu einer Rechteckform gebogen, daß das zweite Zentrier- und Montageprofil außerhalb des Bereiches des Schlosses zu liegen kommt, die Bewehrungsbügelgruppen zueinander ausgerichtet und mit statischen Betonstahlprofilen zu dem Bewehrungskorb an den vorgegebenen Stellen verbunden.To produce reinforcement cages with a complicated structure or geometry, in a further embodiment of the invention, one of the number of reinforcement brackets of each reinforcement bracket group and a number of reinforcement bracket groups corresponding to the number of reinforcement bracket profiles are aligned to form the groups, the aligned reinforcement bar profiles of each group with exactly one Centering and assembly profile in the area of the lock and outside of this area welded with exactly one further centering and assembly profile to form a profile group, the aligned profile groups bent to form reinforcement bracket groups to form a rectangular shape such that the second centering and assembly profile outside the area of the castle comes to rest, the reinforcement bracket groups aligned to each other and connected with static reinforcing steel profiles to the reinforcement cage at the specified points.
Erfindungsgemäß werden die Bügelgruppen mit den statischen Betonstahlprofilen an den vorgegebenen Stellen miteinander verschweißt oder verdrahtet.According to the invention, the bracket groups with the static reinforcing steel profiles are welded or wired together at the predetermined locations.
Die Erfindung ist in der Zeichnung anhand von Ausführungsbeispielen erläutert.The invention is explained in the drawing using exemplary embodiments.
Es zeigen
- Fig. 1a - 1f
- schematisch die Herstellung eines Bewehrungskorbes,
- Fig. 1g
- das Detail X aus Figur 1f und
- Fig. 2
- einen aus zwei Bewehrungsbügelgruppen aufgebauten Bewehrungskorb.
- 1a-1f
- schematically the production of a reinforcement cage,
- Fig. 1g
- the detail X from Figure 1f and
- Fig. 2
- a reinforcement cage made up of two reinforcement bracket groups.
Die Figuren 1a bis 1f zeigen in einer perspektivischen Ansicht das Herstellen eines Bewehrungskorbes 1 (Fig. 2).Figures 1a to 1f show a perspective view of the manufacture of a reinforcement cage 1 (Fig. 2).
Gemäß Figur la werden sieben Betonstabstahlprofile 2 parallel und in vorgegebenem Abstand zueinander ausgerichtet.According to Figure la, seven reinforcing
Anschließend wird im vorderen Bereich das Zentrier- und Montageprofil 3 und im hinteren Bereich das Zentrier- und Montageprofil 4 im rechten Winkel zu den Betonstabstahlprofilen angeordnet, so daß sie sich rechtwinklig kreuzen.Subsequently, the centering and mounting
An sämtlichen Kreuzungsstellen 5 erfolgt durch Punktschweißen die Verbindung sämtlicher Zentrier- und Montageprofile mit den Betonstabstahlprofilen.At all
Die über das Zentrier- und Montageprofil 3 vorstehenden Endabschnitte 6 der Betonstabstahlprofile werden mit dem Zentrier- und Montageprofil 3 im ersten Biegetakt in eine Ebene parallel zur Ebene der Betonstabstahlprofile in Fig. 1a U-förmig unter Bildung des einen Teil des Schlosses 7 (Figur 1f und 1g) so gebogen, daß das Zentrier- und Montageprofil 3 auf der Innenseite des U verläuft und die Stirnflächen 8 der Endabschnitte in Richtung zum zweiten Zentrier- und Montageprofil 4 zeigen.The over the centering and mounting
Anschließend werden die weiteren Biegetakte gemäß den Figuren 1c bis 1f so durchgeführt, daß die aus Figur 1f ersichtliche Bewehrungsbügelgruppe 9 unter Bildung des Schlosses 7 gebogen ist, deren Bewehrungsbügel mit 10 bezeichnet sind.The further bending cycles according to FIGS. 1c to 1f are then carried out in such a way that the reinforcement bracket group 9 shown in FIG. 1f is bent to form the
Die Fig. 1g zeigt in vergrößerter Darstellung das Schloß eines Bewehrungsbügels (Detail X aus Fig. 1f).Fig. 1g shows an enlarged view of the lock of a reinforcement bracket (detail X from Fig. 1f).
Wesentlich ist, daß die beiden Zentrier- und Montageprofile auf der einen Seite der Betonstabstahlprofile angeordnet sind (vgl. insbesondere Figur 1) und daß ihre Anordnung so getroffen ist, daß sie außerhalb der Biegestellen verlaufen, so daß das Biegen problemlos durchgeführt werden kann.It is essential that the two centering and mounting profiles are arranged on one side of the reinforcing bar profiles (cf. in particular Figure 1) and that their arrangement is such that they run outside the bending points so that the bending can be carried out without problems.
Die Figur 2 zeigt einen aus zwei Bewehrungsbügelgruppen 11 und 12 bestehenden Bewehrungskorb 13.FIG. 2 shows a
Die Bewehrungsbügelgruppe 11 besteht aus den beiden Zentrier- und Montageprofilen 14 und 15 und den Bewehrungsbügeln 16, die Bewehrungsbügelgruppe 12 aus den beiden Zentrier- und Montageprofilen 17 und 18 und den Bewehrungsbügeln 19.The
Die beiden Bewehrungsbügelgruppen 11 und 12 werden in vorgegebenem Abstand zueinander angeordnet. Dann werden die statischen Betonstahlprofile 20 nach Vorgabe zu den beiden Bewehrungsbügelgruppen angeordnet und an den vorgegebenen Berührungs- und Kreuzungsstellen mit ihnen durch Punktschweißen unter Bildung des Bewehrungskorbes verbunden. Dies kann in der Produktionsstätte oder auch erst an der Baustelle erfolgen.The two
Aus Figur 2 ist ohne weiteres ersichtlich, daß nach dem Baukastenprinzip Bewehrungskörbe mit kompliziertem räumlichem Aufbau herstellbar sind.From Figure 2 it is readily apparent that reinforcement cages with a complicated spatial structure can be produced according to the modular principle.
Diese Bewehrungskörbe sind Typenkörbe und dienen der individuellen Vereinfachung von statischen Bewehrungsvorkommnissen bei der Fertigung sowie der Montage.These reinforcement baskets are type baskets and serve the individual simplification of static reinforcement occurrences during manufacture and assembly.
Hierbei handelt es sich um batteriegeschweißte standsichere Bewehrungsbügel aus Betonstabstahl nach DIN 488 ohne statische Trageeisen bei unterschiedlichen Stababständen und wechselnden Stabdurchmessern.These are battery-welded, stable reinforcement bars made of rebar according to DIN 488 without static carrying iron with different bar spacings and changing bar diameters.
Es werden erhebliche Produktions- und Montagekosten bei nach diesem Verfahren hergestellten Bewehrungskörben gegenüber der herkömmlichen Produktions- und Montageart eingespart.Considerable production and assembly costs are saved in the case of reinforcement cages produced using this method compared to the conventional type of production and assembly.
Claims (10)
- A reinforcing cage of reinforcing rod steel for building construction or underground structures which has reinforcing bends and static steel profiles, wherein a plurality of reinforcing profiles have a lock in their end zone and cooperate with centring and assembly profiles extending perpendicularly of the reinforcing profiles to form a group of reinforcing bends, the group of reinforcing bends having the static steel profiles being connected at given places to the reinforcing cage and each reinforcing bend being bent substantially into a rectable, and each group of reinforcing bends has precisely two common centring and assembly profiles (3, 4); characterized in that the lock (7) of the reinforcing profiles bent to form a group of reinforcing bends (11, 12) is formed by a U-shaped hook at the other end of the reinforcing profile and by an angle hook at the other end of the reinforcing profile; in each case the first centring and assembly profile (3) is disposed on the inside of the U-shaped hook and is engaged around by the angle hook; and the other centring and assembly profile (4) is disposed on the inside on a side of the rectangle adjoining the lock (7) outside the zone of the lock.
- A reinforcing cage according to claim 1, characterized in that the centring and assembly profiles are welded to the reinforcing bends outside the bending places.
- A reinforcing cage according to claims 1 or 2, characterized in that the reinforcing bends are welded or wired to the static steel profiles at given places.
- A reinforcing cage according to one of claims 1 to 3, characterized in that a number of groups of reinforcing bends having static reinforcing steel profiles is connected via reinforcing steel profiles at given places to the reinforcing cage.
- A reinforcing cage according to claim 4, characterized in that the groups of reinforcing bends are connected to the static steel profiles outside the bending places.
- A reinforcing cage according to claims 4 or 5, characterized in that the groups of reinforcing bends are welded or wired to the static steel profiles at given places.
- A process for the production of the reinforcing cage according to one of claims 1 to 3, characterized in that a number of steel rod profiles corresponding to the number of reinforcing bends are aligned in relation to one another; the rod steel profiles aligned in relation to one another having to precisely one centring and assembly profile in the zone of the lock and outside said zone having precisely one further centring and assembly profile are welded into an aligned profile group; the aligned profile group is so bent, accompanied by the common formation of the reinforcing bends into a group of reinforcing bends, into a rectangular shape that the second centring and assembly profile comes to lie outside the zone of the lock, and the group of reinforcing bends having the static profiles are connected to the reinforcing cage.
- A process according to claim 7, characterized in that the reinforcing bends and the static steel profiles are welded or wired to one another at the given places.
- A process for the production of the reinforcing cage according to one of claims 4, 5 or 6, characterized in that the number of reinforcing bends corresponding to each group of reinforcing bends, and a number of rod steel profiles corresponding to the number of groups of reinforcing bends are aligned to form the groups; the rod steel profiles of each group aligned with one another having precisely one centring and assembly profile in the zone of the lock and outside said zone having precisely one further centring and assembly profile are welded into a profile group; the aligned profile groups are so bent, accompanied by the formation of the reinforcing bends into groups of reinforcing bends, that the second centring and assembly profile comes to lie outside the zone of the lock, and the groups of reinforcing bends aligned in relation to one another and having static steel profiles are connected at the given places to the reinforcing cage.
- A process according to claim 9, characterized in that the groups of bends having the static steel profiles are welded or wired to one another at the given places.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3913349 | 1989-04-22 | ||
| DE3913349 | 1989-04-22 | ||
| DE3929633 | 1989-09-06 | ||
| DE3929633 | 1989-09-06 | ||
| DE19893938508 DE3938508A1 (en) | 1989-04-22 | 1989-11-20 | Concrete-reinforcing steel cage - has profiled components welded to common centring one |
| DE3938508 | 1989-11-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0394815A1 EP0394815A1 (en) | 1990-10-31 |
| EP0394815B1 true EP0394815B1 (en) | 1996-02-28 |
Family
ID=27199458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP90107309A Expired - Lifetime EP0394815B1 (en) | 1989-04-22 | 1990-04-18 | Steel reinforcing cage |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0394815B1 (en) |
| AT (1) | ATE134735T1 (en) |
| DE (3) | DE3943739C2 (en) |
| DK (1) | DK0394815T3 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH695106A5 (en) * | 2001-01-23 | 2005-12-15 | Fischer Reinach Ag | A process for preparing a Schubarmierung in supported concrete floors. |
| FR2883315B1 (en) * | 2005-03-21 | 2007-05-04 | Kp1 Soc Par Actions Simplifiee | SUSPENSION FOR CONCRETE SLAB OR SIMILAR |
| EP1878846B1 (en) * | 2006-07-14 | 2013-08-28 | RUWA Drahtschweisswerk AG | Connecting cage, its use and connecting reinforcement manufactured therewith |
| EP1964980A1 (en) * | 2007-02-28 | 2008-09-03 | Etienne Heirwegh | Excavating means and method to cast in-situ cast walls |
| EP2588677B1 (en) * | 2010-07-01 | 2016-03-16 | Sidenor S.A. | Structure for strengthening concrete and method for producing a structure for strengthening concrete |
| WO2016138923A1 (en) * | 2015-03-02 | 2016-09-09 | Sidenor S.A. | Structure for strengthening a longitudinally extending concrete wall |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3375632A (en) * | 1964-12-23 | 1968-04-02 | Congy Marcel | Reinforcement element for beams and poles made from reinforced concrete |
| DE1946135U (en) * | 1966-07-23 | 1966-09-15 | Baustahlgewebe Gmbh | STRUCTURAL MAT FOR THE PRODUCTION OF STRUCTURE REINFORCEMENT |
| DE2614026A1 (en) * | 1976-04-01 | 1977-10-06 | Bauunternehmung M Allmendinger | Concrete foundation pile reinforcing cage - has lengthways reinforcing rods inside mesh with curved rods forming cylindrical sheath |
| AT379636B (en) * | 1983-07-15 | 1986-02-10 | Best Baueisen & Stahl | REINFORCEMENT BASKET FOR SPACIOUS ARMORING OF REINFORCED CONCRETE BODIES |
| AT378979B (en) * | 1983-09-01 | 1985-10-25 | Best Baueisen & Stahl | REINFORCEMENT FOR STEEL CONCRETE CONSTRUCTION |
-
1989
- 1989-11-20 DE DE3943739A patent/DE3943739C2/en not_active Expired - Fee Related
- 1989-11-20 DE DE3943654A patent/DE3943654C2/en not_active Expired - Fee Related
-
1990
- 1990-04-18 EP EP90107309A patent/EP0394815B1/en not_active Expired - Lifetime
- 1990-04-18 DK DK90107309.8T patent/DK0394815T3/en active
- 1990-04-18 AT AT90107309T patent/ATE134735T1/en not_active IP Right Cessation
- 1990-04-18 DE DE59010154T patent/DE59010154D1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| ATE134735T1 (en) | 1996-03-15 |
| DK0394815T3 (en) | 1996-06-24 |
| DE3943739C2 (en) | 1998-04-30 |
| DE59010154D1 (en) | 1996-04-04 |
| DE3943654C2 (en) | 1997-03-20 |
| EP0394815A1 (en) | 1990-10-31 |
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