EP0866191B1 - Formwork element - Google Patents
Formwork element Download PDFInfo
- Publication number
- EP0866191B1 EP0866191B1 EP98104415A EP98104415A EP0866191B1 EP 0866191 B1 EP0866191 B1 EP 0866191B1 EP 98104415 A EP98104415 A EP 98104415A EP 98104415 A EP98104415 A EP 98104415A EP 0866191 B1 EP0866191 B1 EP 0866191B1
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- EP
- European Patent Office
- Prior art keywords
- formwork element
- formwork
- textile
- element according
- web
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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
- E04C5/07—Reinforcing elements of material other than metal, e.g. of glass, of plastics, or not exclusively made of metal
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
- E04B5/36—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
Definitions
- the invention relates to a formwork element with an angled profile, consisting from a hydraulically bound matrix in which textile fibers are embedded.
- the known formwork element consists essentially of a hydraulic set matrix made of concrete, in which textile fibers are embedded.
- the known formwork element is made by spraying a mixture from the Concrete and the fibers are formed on a molding surface.
- the fibers are arbitrary oriented and not arranged as a whole as individual fibers.
- the formwork element has on the side facing away from the mold surface after its manufacture, a rough surface from which individual fibers protrude.
- the protruding fibers enable an easy and good connection with in-situ concrete, which is in contact with the formwork element for the manufacture of a building arrives. Due to the randomly oriented fibers, one is essentially in all Directions uniform pressure or tensile strength of the formwork element achieved.
- a prefabricated component is known from EP-A-0 135 374, which essentially consists of a hydraulically bound matrix, in which textile fibers are embedded are.
- the prefabricated component also has reinforcement that is at least one comprises in one direction coherent textile structure, which from the textile fibers is formed.
- the known prefabricated building elements are plate-shaped trained, with individual plates joined together to form different objects can be. On the one hand, this can be done by means of a screw connection respectively.
- fibers could protrude from a matrix be arranged overlapping and then, for example, using cement get connected.
- the textile structure formed from the textile fibers however not coherent at the junction, only arranged overlapping.
- the invention is based on the object, a formwork element in question to design and develop the standing type in such a way that it is lighter, thin-walled Design at least in one direction, namely the direction in which the component is exposed to increased pressure or tensile loads, higher pressure or Withstands tensile loads.
- the formwork element according to the invention solves the above task by Features of claim 1. Thereafter, the formwork element mentioned designed so that the formwork element as a prefabricated element with a Reinforcement in the form of a textile that is connected in at least one direction Formed is formed, which is formed from the textile fibers, and that the textile structure at least over part of the angularly adjacent sections of the profile, so that the textile structure is a three-dimensional reinforcement forms.
- a textile fabric i.e. an unordered but coherent aggregation of fibers, serve as reinforcement. It is particularly advantageous if the reinforcement is through a textile fabric, i.e. a structure of vertically crossing, properly intertwined threads is formed. Such a fabric is special particularly resilient in the direction of the warp and weft threads. Let also modern weaving machines are already used to weave very different fabrics, also realize three-dimensional structure. As textile reinforcement braids are also possible.
- the textile structure of the formwork element according to the invention could, for example Glass fibers can be produced or comprise glass fibers.
- the durability of such Reinforcement depends heavily on the chemical properties of the hydraulic set matrix of the formwork element. So the lifespan of Glass fibers in an alkaline environment only 50 to 100 years. In view of that cement or concrete is often used as the hydraulically set matrix hence the use of textile structures with carbon fibers and / or aramid fibers advantageous that are not attacked by the alkaline environment.
- the matrix of the formwork element according to the invention is preferably a cement-bound matrix is used, since these have very high stability requirements equivalent. However, it is also possible to implement the invention Formwork elements with another mineral-bound matrix.
- inventive has proven to be particularly advantageous Formwork elements in the context of integrated formwork systems during manufacture of concrete structures.
- each individual formwork element With the individual formwork elements, a mold is practically created for the one to be created Concrete body made by the outer shape of the concrete body to be created is reproduced. To do this, each individual formwork element must be in its Position removed or supported, so that the formwork next to its own weight also the weight of the wet concrete together with any reinforcement of the concrete body and other loads that occur during the construction phase wearing. The formwork also needs the concrete during the hardening phase protect against drying out.
- formwork systems Since the assembly and dismantling of reusable formwork systems is very time-consuming and is associated with a high level of labor, is used in practice frequently integrated formwork systems, i.e. formwork systems that are in or on the created concrete structure remain. Such formwork systems must also be optical Requirements are sufficient, for example, in the visual appearance of the Insert concrete structure.
- the reinforcement is due to the textile high resilience and load-bearing capacity of the formwork elements according to the invention pointed out at the same time relatively light and thin-walled construction.
- the Formwork elements can not only be self-supporting, but also so that they can withstand higher loads and next to their own weight also at least a large part of the weight of the building to be built can wear.
- the reinforcement elements can be embedded in the hydraulically bound matrix, but nevertheless arranged as far as possible on the outside of the formwork element his. As a result, the reinforcement can cause tensile stresses in particular absorb effectively.
- good post-treatment of the concrete can be guaranteed.
- the durability of the concrete structure can also be reduced improve.
- the formwork elements in the statics of built structure to be included.
- profile parts have a higher surface load capacity than simple panels on.
- prefabricated parts can easily be made from profile parts Assemble larger surface elements with which even larger spans can be bridged.
- a formwork element with a angled profile in the context of an integrated formwork affects the angled Profile positive for the creation of a shear connection between the formwork element and the concrete body to be created.
- Another advantageous possibility is a textile structure with a fleece in the form of protruding individual fibers as reinforcement use. After creating the concrete structure, the fleece is then one-sided in the hydraulically bound matrix of the formwork element and on the other Side embedded in the concrete body of the building.
- the formwork elements 1 shown in FIGS. 1 to 3 are exemplary embodiments, which consist of a hydraulically bound matrix 2, in which textile fibers are embedded.
- the textile fibers form a reinforcement 3 in the form of at least one textile structure connected in one direction.
- the reinforcement is involved 3 each around a textile fabric.
- the formwork elements 1 shown can be but just as well with reinforcement in the form of a textile scrim or braid realize.
- the reinforcement 3 can consist of glass fibers, carbon fibers, aramid fibers or a mixture of these fibers.
- the hydraulically set matrix 2 of the formwork elements 1 is usually be cement bound.
- the formwork elements 1 of the illustrated exemplary embodiments differ in the shape of their angled profile.
- Fig. 1 is a substantially U-shaped Formwork element shown that also for bridging larger areas other uniform formwork elements can be clamped together.
- FIG. 3 shows a series of two uniform formwork elements, which also have a substantially U-shaped profile. However, here is one the leg 4 longer than the other and has one at its free end Right angle arranged extension 5, which is when stringing together extends several uniform profiles over the leg 6 of the adjacent profile.
- a relative dense formwork can be assembled.
- Fig. 2 is a formwork element 1 in the form of a large panel element with integrated Web 7 shown that practically already from a string of U-shaped Sections exists.
- the length of the webs 7 of this profile corresponds to the Wall thickness of the concrete structure to be created. Accordingly, this is shown Formwork element 1 has been filled with in-situ concrete 8.
- the textile reinforcement extends in all three illustrated exemplary embodiments 3, ie the fabric, over all wall sections of the angled profile of the Formwork elements 1.
- a flat textile structure can be used, the corresponding placed at an angle and integrated into the matrix 2 of the formwork element 1, or it can also be a textile manufactured in the form of the formwork element 1 Formations, for example an appropriately woven fabric, can be used.
- the textile structure then represents a three-dimensional reinforcement 3.
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- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Reinforcement Elements For Buildings (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
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Abstract
Description
Die Erfindung betrifft ein Schalungselement mit einem gewinkelten Profil, bestehend aus einer hydraulisch abgebundenen Matrix, in der textile Fasern eingebettet sind.The invention relates to a formwork element with an angled profile, consisting from a hydraulically bound matrix in which textile fibers are embedded.
In der DE 44 22 448 A1 wird ein Schalungselement beschrieben, das aus Kurzfaserbeton hergestellt ist, einem Verbundwerkstoff, nämlich Feinbeton mit einer Faserverstärkung. Die bekannten Schalungselemente stellen relativ dünne aber feste Bauteile dar, da die Faserverstärkung relativ hohe Zug- und Biegezugspannungen aufnehmen kann. Die Faserverstärkung ist im gesamten Bauelement statistisch gleichmäßig verteilt und in allen Richtungen gleichmäßig belastbar. Sie folgt auch komplizierteren Formen und Strukturen des Schalungselements.DE 44 22 448 A1 describes a formwork element made of short fiber concrete is produced, a composite material, namely fine concrete with a fiber reinforcement. The known formwork elements are relatively thin but solid components because the fiber reinforcement absorb relatively high tensile and bending tensile stresses can. The fiber reinforcement is statistically uniform throughout the component distributed and resilient in all directions. It also follows more complicated ones Forms and structures of the formwork element.
Aus der DE-A-26 58 622 ist ein Schalungselement mit einem gewinkelten Profil bekannt. Das bekannte Schalungselement besteht im Wesentlichen aus einer hydraulisch abgebundenen Matrix aus Beton, in der textile Fasern eingebettet sind.From DE-A-26 58 622 a formwork element with an angled profile is known. The known formwork element consists essentially of a hydraulic set matrix made of concrete, in which textile fibers are embedded.
Das bekannte Schalungselement wird durch Aufspritzen eines Gemischs aus dem Beton und den Fasern auf eine Formoberfläche gebildet. Die Fasern sind dabei willkürlich orientiert und insgesamt als Einzelfasern nicht zusammenhängend angeordnet. An der der Formoberfläche abgewandten Seite weist das Schalungselement nach seiner Herstellung eine rauhe Oberfläche auf, von der einzelne Fasern abstehen. Die abstehenden Fasern ermöglichen eine leichte und gute Verbindung mit Ortbeton, der mit dem Schalungselement zur Herstellung eines Bauwerks in Kontakt gelangt. Durch die willkürlich orientierten Fasern ist eine im Wesentlichen in alle Richtungen gleichmäßige Druck- bzw. Zugfestigkeit des Schalungselements erreicht.The known formwork element is made by spraying a mixture from the Concrete and the fibers are formed on a molding surface. The fibers are arbitrary oriented and not arranged as a whole as individual fibers. The formwork element has on the side facing away from the mold surface after its manufacture, a rough surface from which individual fibers protrude. The protruding fibers enable an easy and good connection with in-situ concrete, which is in contact with the formwork element for the manufacture of a building arrives. Due to the randomly oriented fibers, one is essentially in all Directions uniform pressure or tensile strength of the formwork element achieved.
Aus der EP-A-0 135 374 ist ein Fertigbauelement bekannt, das im Wesentlichen aus einer hydraulisch abgebundenen Matrix besteht, in die textile Fasern eingebettet sind. Das Fertigbauelement weist des Weiteren eine Bewehrung auf, die ein zumindest in einer Richtung zusammenhängendes textiles Gebilde umfasst, das aus den textilen Fasern gebildet wird. Die bekannten Fertigbauelemente sind plattenförmig ausgebildet, wobei zur Bildung unterschiedlicher Gegenstände einzelne Platten aneinandergefügt werden können. Dies kann zum einen mittels einer Verschraubung erfolgen. Zum anderen könnten aus jeweils einer Matrix hervorstehende Fasern überlappend angeordnet werden und anschließend beispielsweise mittels Zement verbunden werden. Dabei ist das aus den textilen Fasern gebildete textile Gebilde jedoch an der Anschlussstelle nicht zusammenhängend, sondern lediglich überlappend angeordnet.A prefabricated component is known from EP-A-0 135 374, which essentially consists of a hydraulically bound matrix, in which textile fibers are embedded are. The prefabricated component also has reinforcement that is at least one comprises in one direction coherent textile structure, which from the textile fibers is formed. The known prefabricated building elements are plate-shaped trained, with individual plates joined together to form different objects can be. On the one hand, this can be done by means of a screw connection respectively. On the other hand, fibers could protrude from a matrix be arranged overlapping and then, for example, using cement get connected. Here is the textile structure formed from the textile fibers however not coherent at the junction, only arranged overlapping.
Der Erfindung liegt nun die Aufgabe zugrunde, ein Schalungselement der in Rede stehenden Art so auszugestalten und weiterzubilden, dass es bei leichter, dünnwandiger Bauform zumindest in einer Richtung, nämlich der Richtung, in der das Bauelement erhöhten Druck- bzw. Zugbelastungen ausgesetzt ist, höheren Druck- bzw. Zugbelastungen standhält.The invention is based on the object, a formwork element in question to design and develop the standing type in such a way that it is lighter, thin-walled Design at least in one direction, namely the direction in which the component is exposed to increased pressure or tensile loads, higher pressure or Withstands tensile loads.
Das erfindungsgemäße Schalungselement löst die voranstehende Aufgabe durch die
Merkmale des Patentanspruches 1. Danach ist das eingangs genannte Schalungselement
so ausgestaltet, dass das Schalungselement als Fertigbauelement mit einer
Bewehrung in Form eines zumindest in einer Richtung zusammenhängenden textilen
Gebildes ausgebildet ist, das aus den textilen Fasern gebildet wird, und dass sich
das textile Gebilde zumindest über einen Teil der winklig aneinandergrenzenden Abschnitte
des Profils erstreckt, so dass das textile Gebilde eine dreidimensionale Bewehrung
bildet.The formwork element according to the invention solves the above task by
Features of
Erfindungsgemäß ist zunächst erkannt worden, dass Textilfasern hohe Zugspannungen aufnehmen können und sich insofern nicht nur als Komponente eines Verbundwerkstoffs, sondern auch zur Realisierung von eigenständigen Bewehrungselementen eignen. Es ist ferner erkannt worden, dass sich mit Hilfe von textilen Bewehrungselementen äußerst belastbare aber dennoch sehr dünnwandige Schalungselemente realisieren lassen, da die textilen Bewehrungselemente nicht rosten und daher keine Mindestüberdeckung derartiger Bewehrungselemente eingehalten werden muss. Aufgrund ihrer Dünnwandigkeit sind die erfindungsgemäßen Schalungselemente relativ leicht, wodurch sowohl der mit dem Transport als auch der mit der Montage dieser Schalungselemente verbundene Aufwand in Grenzen gehalten werden kann. Schließlich ist noch ausgehend von den bekannten Schalungselementen mit einer statistisch gleichmäßig verteilten Faserbewehrung erkannt worden, dass die Belastbarkeit eines Schalungselements zumindest in einer Richtung bei vergleichbarem Materialaufwand erheblich erhöht werden kann, wenn die textilen Fasern gerichtet in die hydraulisch abgebundene Matrix des Schalungselements eingebettet werden, wenn also zumindest in Richtung der zu erwartenden Zugspannung zusammenhängende Fasern vorgesehen sind. Daher wird erfindungsgemäß vorgeschlagen, ein Schalungselement mit einer textilen Bewehrung in Form eines zumindest in einer Richtung zusammenhängenden textilen Gebildes zu versehen.According to the invention, it was first recognized that textile fibers have high tensile stresses can absorb and therefore not only as a component of a composite material, but also for the realization of independent reinforcement elements suitable. It has also been recognized that using textiles Reinforcement elements extremely resilient but still very thin-walled formwork elements can be realized because the textile reinforcement elements do not rust and therefore no minimum coverage of such reinforcement elements was observed must become. Due to their thin walls, the formwork elements according to the invention relatively light, which makes both the one with the transport and the one with the assembly of these formwork elements associated effort kept within limits can be. Finally, starting from the known formwork elements with a statistically evenly distributed fiber reinforcement, that the resilience of a formwork element at least in one direction Comparable cost of materials can be increased significantly if the textile Fibers embedded in the hydraulically bound matrix of the formwork element if at least in the direction of the expected tension contiguous fibers are provided. It is therefore proposed according to the invention a formwork element with a textile reinforcement in the form of a least to provide a coherent textile structure in one direction.
Es gibt nun verschiedene Möglichkeiten, das erfindungsgemäße Schalungselement in werkstofftechnologischer Hinsicht zu variieren. So könnte ein textiles Gelege, d.h. eine nicht geordnete aber dennoch zusammenhängende Zusammenballung von Fasern, als Bewehrung dienen. Besonders vorteilhaft ist es, wenn die Bewehrung durch ein textiles Gewebe, also ein Gebilde aus senkrecht sich kreuzenden, ordnungsgemäß miteinander verflochtenen Fäden, gebildet wird. Ein solches Gewebe ist insbesondere in Richtung der Kett- und Schussfäden besonders belastbar. Außerdem lassen sich mit modernen Webmaschinen heute bereits sehr großflächige Gewebe unterschiedlichster, auch dreidimensionaler Struktur realisieren. Als textile Bewehrung kommen schließlich auch Geflechte in Frage.There are various options for the formwork element according to the invention to vary in terms of material technology. A textile fabric, i.e. an unordered but coherent aggregation of fibers, serve as reinforcement. It is particularly advantageous if the reinforcement is through a textile fabric, i.e. a structure of vertically crossing, properly intertwined threads is formed. Such a fabric is special particularly resilient in the direction of the warp and weft threads. Let also modern weaving machines are already used to weave very different fabrics, also realize three-dimensional structure. As textile reinforcement braids are also possible.
Das textile Gebilde des erfindungsgemäßen Schalungselements könnte bspw. aus Glasfasern hergestellt sein bzw. Glasfasern umfassen. Die Beständigkeit einer derartigen Bewehrung hängt stark von den chemischen Eigenschaften der hydraulisch abgebundenen Matrix des Schalungselements ab. So beträgt die Lebensdauer von Glasfasern im alkalischen Milieu lediglich 50 bis 100 Jahre. Im Hinblick darauf, dass als hydraulisch abgebundene Matrix oftmals Zement oder Beton verwendet wird, ist daher die Verwendung von textilen Gebilden mit Kohlenstoff-Fasern und/oder Aramid-Fasern vorteilhaft, die von dem alkalischen Milieu nicht angegriffen werden. Als Matrix des erfindungsgemäßen Schalungselements wird, wie bereits angedeutet, vorzugsweise eine zementgebundene Matrix verwendet, da diese sehr hohen Stabilitätsanforderungen entspricht. Möglich ist aber auch die Realisierung des erfindungsgemäßen Schalungsetements mit einer anderen mineralisch gebundenen Matrix. The textile structure of the formwork element according to the invention could, for example Glass fibers can be produced or comprise glass fibers. The durability of such Reinforcement depends heavily on the chemical properties of the hydraulic set matrix of the formwork element. So the lifespan of Glass fibers in an alkaline environment only 50 to 100 years. In view of that cement or concrete is often used as the hydraulically set matrix hence the use of textile structures with carbon fibers and / or aramid fibers advantageous that are not attacked by the alkaline environment. As As already indicated, the matrix of the formwork element according to the invention is preferably a cement-bound matrix is used, since these have very high stability requirements equivalent. However, it is also possible to implement the invention Formwork elements with another mineral-bound matrix.
Als besonders vorteilhaft erweist sich die Verwendung von erfindungsgemäßen Schalungselementen im Rahmen von integrierten Schalungssystemen bei der Herstellung von Betonbauwerken.The use of inventive has proven to be particularly advantageous Formwork elements in the context of integrated formwork systems during manufacture of concrete structures.
Mit den einzelnen Schalungselementen wird praktisch eine Gussform für den zu erstellenden Betonkörper hergestellt, indem die äußere Form des zu erstellenden Betonkörpers nachgebildet wird. Dazu muss jedes einzelne Schalungselemente in seiner Position ab- bzw. unterstützt werden, so dass die Schalung neben ihrem Eigengewicht auch das Gewicht des nassen Betons zusammen mit einer etwaigen Bewehrung des Betonkörpers sowie weitere während der Bauphase auftretende Belastungen trägt. Die Schalung muss den Beton außerdem während der Aushärtphase vor dem Austrocknen schützen.With the individual formwork elements, a mold is practically created for the one to be created Concrete body made by the outer shape of the concrete body to be created is reproduced. To do this, each individual formwork element must be in its Position removed or supported, so that the formwork next to its own weight also the weight of the wet concrete together with any reinforcement of the concrete body and other loads that occur during the construction phase wearing. The formwork also needs the concrete during the hardening phase protect against drying out.
Da der Auf- und Abbau von wiederverwendbaren Schalungssystemen sehr zeitintensiv ist und mit einem hohen Arbeitseinsatz verbunden ist, verwendet man in der Praxis häufig integrierte Schalungssysteme, also Schalungssysteme, die in bzw. an dem erstellten Betonbauwerk verbleiben. Derartige Schalungssysteme müssen auch optischen Anforderungen genügen, sich bspw. in das optische Erscheinungsbild des Betonbauwerks einfügen.Since the assembly and dismantling of reusable formwork systems is very time-consuming and is associated with a high level of labor, is used in practice frequently integrated formwork systems, i.e. formwork systems that are in or on the created concrete structure remain. Such formwork systems must also be optical Requirements are sufficient, for example, in the visual appearance of the Insert concrete structure.
An dieser Stelle sei nochmals auf die auf die textile Bewehrung zurückzuführende hohe Belastbarkeit und Tragfähigkeit der erfindungsgemäßen Schalungselemente bei gleichzeitiger relativ leichter und dünnwandiger Bauweise hingewiesen. Die Schalungselemente können nicht nur selbsttragend realisiert werden, sondern auch so, dass sie höheren Belastungen standhalten und neben ihrem eigenen Gewicht auch noch zumindest einen großen Teil des Gewichts des zu erstellenden Bauwerks tragen können. Da eine Korrosion der textilen Bewehrungselemente auszuschließen ist, eine Mindestüberdeckung der Bewehrungselemente also nicht erforderlich ist, können die Bewehrungselemente zwar in die hydraulisch abgebundene Matrix eingebettet, aber dennoch möglichst weit an der Außenseite des Schalungselements angeordnet sein. Dadurch kann die Bewehrung auftretende Zugspannungen besonders effektiv aufnehmen. Durch Wahl eines geeigneten Materials für die Matrix des Schalungselements lässt sich eine gute Nachbehandlung des Betons gewährleisten. Im Falle einer integrierten Schalung lässt sich dadurch auch die Beständigkeit des Betonbauwerks verbessern. Außerdem können die Schalungselemente in die Statik des erstellten Bauwerks einbezogen werden.At this point I would like to say that the reinforcement is due to the textile high resilience and load-bearing capacity of the formwork elements according to the invention pointed out at the same time relatively light and thin-walled construction. The Formwork elements can not only be self-supporting, but also so that they can withstand higher loads and next to their own weight also at least a large part of the weight of the building to be built can wear. To prevent corrosion of the textile reinforcement elements a minimum coverage of the reinforcement elements is not necessary, the reinforcement elements can be embedded in the hydraulically bound matrix, but nevertheless arranged as far as possible on the outside of the formwork element his. As a result, the reinforcement can cause tensile stresses in particular absorb effectively. By choosing a suitable material for the formwork element matrix good post-treatment of the concrete can be guaranteed. in the In the case of integrated formwork, the durability of the concrete structure can also be reduced improve. In addition, the formwork elements in the statics of built structure to be included.
Zunächst weisen Profilteile im Vergleich zu einfachen Platten eine höhere Flächenbelastbarkeit auf. Außerdem lassen sich aus Profilteilen einfach in Fertigbauweise größere Flächenelemente zusammensetzen, mit denen auch größere Spannweiten überbrückt werden können. Bei Verwendung eines Schalungselements mit einem gewinkelten Profil im Rahmen einer integrierten Schalung wirkt sich das gewinkelte Profil positiv auf die Herstellung einer Schubverbindung zwischen dem Schalungselement und dem zu erstellenden Betonkörper aus.First of all, profile parts have a higher surface load capacity than simple panels on. In addition, prefabricated parts can easily be made from profile parts Assemble larger surface elements with which even larger spans can be bridged. When using a formwork element with a angled profile in the context of an integrated formwork affects the angled Profile positive for the creation of a shear connection between the formwork element and the concrete body to be created.
Selbstverständlich gibt es verschiedenste Ausgestaltungsmöglichkeiten zur Realisierung eines winkligen Profils für ein Schalungselement. In der Praxis haben sich Profile mit einem oder mehreren U-förmigen Abschnitten bewehrt.Of course there are various design options for implementation of an angled profile for a formwork element. In practice there are profiles reinforced with one or more U-shaped sections.
Bereits voranstehend ist im Zusammenhang mit integrierten Schalungssystemen die Schubverbindung zwischen den Schalungselementen und dem Betonbauwerk angesprochen worden. Dazu wird als besonders vorteilhafte Variante des erfindungsgemäßen Schalungselements ein Schalungselement vorgeschlagen, dessen textiles Bewehrungselement Fortsätze aufweist, die nicht in die hydraulisch abgebundene Matrix eingebettet sind. Diese Fortsätze ragen dann praktisch zunächst in die nasse Betonmasse und später in den ausgehärteten Betonkörper hinein. Dadurch lässt sich eine hervorragende Schubverbindung nach Art einer Verdübelung realisieren. Mit Hilfe von modernen textilverarbeitenden Maschinen, insbesondere modernen Webstühlen, lassen sich ganz unterschiedliche flächige textile Gebilde mit Fortsätzen, also letztendlich dreidimensionale textile Gebilde, herstellen. Diese Fortsätze könnten bspw. in Form von nasenartig abragenden Faserverbänden oder Gewebestücken realisiert sein. Eine andere vorteilhafte Möglichkeit besteht darin, ein textiles Gebilde mit einem Flausch in Form von abragenden einzelnen Fasern als Bewehrung zu verwenden. Nach dem Erstellen des Betonbauwerks ist der Flausch dann einseitig in die hydraulisch abgebundene Matrix des Schalungselements und auf der anderen Seite in den Betonkörper des Bauwerks eingebettet. The above is already in connection with integrated formwork systems Shear connection between the formwork elements and the concrete structure addressed Service. For this purpose, a particularly advantageous variant of the invention Formwork element proposed a formwork element, the textile Reinforcing element has extensions that are not hydraulically set in the Matrix are embedded. These projections then practically protrude into the wet Concrete mass and later into the hardened concrete body. This allows realize an excellent shear connection in the manner of an anchoring. With Using modern textile processing machines, especially modern looms, very different flat textile structures with extensions, ultimately, three-dimensional textile structures. These extensions could for example in the form of nose-like protruding fiber bandages or pieces of fabric be realized. Another advantageous possibility is a textile structure with a fleece in the form of protruding individual fibers as reinforcement use. After creating the concrete structure, the fleece is then one-sided in the hydraulically bound matrix of the formwork element and on the other Side embedded in the concrete body of the building.
Es gibt nun verschiedene Möglichkeiten, die Lehre der vorliegenden Erfindung in vorteilhafter Weise auszugestalten und weiterzubilden. Dazu ist einerseits auf die dem Patentanspruch 1 nachgeordneten Ansprüche, andererseits auf die nachfolgende Erläuterung dreier Ausführungsbeispiele der Erfindung anhand der Zeichnung zu verweisen. In Verbindung mit der Erläuterung der bevorzugten Ausführungsbeispiele werden auch im allgemeinen bevorzugte Ausgestaltungen und Weiterbildungen der Lehre erläutert. In der Zeichnung zeigt
- Fig. 1
- ein Schalungselement in perspektivischer Darstellung,
- Fig. 2
- eine Schnittdarstellung einer integrierten Schalung in Form eines Großtafelelements, das durch ein erfindungsgemäßes Schalungselement gebildet ist und
- Fig. 3
- eine Anordnung von erfindungsgemäßen Schalungselementen.
- Fig. 1
- a formwork element in perspective,
- Fig. 2
- a sectional view of an integrated formwork in the form of a large panel element, which is formed by a formwork element according to the invention and
- Fig. 3
- an arrangement of formwork elements according to the invention.
Die in den Fig. 1 bis 3 dargestellten Schalungselemente 1 sind Ausführungsbeispiele,
die aus einer hydraulisch abgebundenen Matrix 2 bestehen, in der textile Fasern
eingebettet sind.The
Erfindungsgemäß bilden die textilen Fasern eine Bewehrung 3 in Form eines zumindest
in einer Richtung zusammenhängenden textilen Gebildes.According to the invention, the textile fibers form a
Bei den hier dargestellten Ausführungsbeispielen handelt es sich bei der Bewehrung
3 jeweils um ein textiles Gewebe. Die dargestellten Schalungselemente 1 ließen sich
aber genausogut mit einer Bewehrung in Form eines textilen Geleges oder Geflechts
realisieren. Die Bewehrung 3 kann aus Glasfasern, Kohlenstoff-Fasern, Aramid-Fasem
oder auch einem Gemisch aus diesen Fasern gebildet sein.In the exemplary embodiments shown here, the reinforcement is involved
3 each around a textile fabric. The
Die hydraulisch abgebundene Matrix 2 der Schalungselemente 1 wird in der Regel
zementgebunden sein.The hydraulically set
Die Schalungselemente 1 der dargestellten Ausführungsbeispiele unterscheiden sich
in der Form ihres gewinkelten Profils. In Fig. 1 ist ein im Wesentlichen U-förmiges
Schalungselement dargestellt, das zum Überbrücken größerer Flächen auch mit
weiteren gleichförmigen Schalungselementen zusammengespannt werden kann.The
Fig. 3 zeigt eine Aneinanderreihung von zwei gleichförmigen Schalungselementen,
die ebenfalls ein im Wesentlichen U-förmiges Profil aufweisen. Hier ist allerdings einer
der Schenkel 4 länger als der andere und weist an seinem freien Ende einen im
rechten Winkel angeordneten Fortsatz 5 auf, der sich bei Aneinanderreihung von
mehreren gleichförmigen Profilen über den Schenkel 6 des angrenzenden Profils erstreckt.
Mit den in Fig. 3 dargestellten Schalungselementen 1 kann so eine relativ
dichte Schalung zusammengesetzt werden.3 shows a series of two uniform formwork elements,
which also have a substantially U-shaped profile. However, here is one
the leg 4 longer than the other and has one at its free end
Right angle arranged
In Fig. 2 ist ein Schalungselement 1 im Form eines Großtafelelements mit integrierten
Stegen 7 dargestellt, das praktisch bereits aus einer Aneinanderreihung von U-förmigen
Abschnitten besteht. Die Länge der Stege 7 dieses Profils entspricht der
Wandungsdicke des zu erstellenden Betonbauwerks. Dementsprechend ist das dargestellte
Schalungselement 1 mit Ortbeton 8 aufgefüllt worden.In Fig. 2 is a
In allen drei dargestellten Ausführungsbeispielen erstreckt sich die textile Bewehrung
3, also das Gewebe, über alle Wandungsabschnitte des gewinkelten Profils der
Schalungselemente 1. Bei der Herstellung der dargestellten Schalungselemente 1
kann entweder ein flächiges textiles Gebilde verwendet werden, das entsprechend
gewinkelt gelegt und in die Matrix 2 des Schalungselements 1 eingebunden wird,
oder es kann auch ein in der Form des Schalungselementes 1 hergestelltes textiles
Gebilde, bspw. ein entsprechend gewebtes Gewebe, verwendet werden. Letztlich
stellt das textile Gebilde dann eine dreidimensionale Bewehrung 3 dar.The textile reinforcement extends in all three illustrated
Wie bereits einleitend erwähnt, sollte im Falle einer integrierten Schalung eine Schubverbindung zwischen den Schalungselementen und dem zu erstellenden Betonkörper hergestellt werden. Dazu könnten Teile des textilen Gebildes aus der Innenwandung des Schalungselements herausragen, so dass sie letztlich in den zu erstellenden Betonkörper eingebunden werden und so praktisch eine Verdübelung zwischen Schalungselement und Betonkörper bilden. Das textile Gebilde könnte dazu mit Fortsätzen in Form von Ausstülpungen, hervortretenden Gewebeteilen oder sonstigen Faserverbänden versehen sein oder auch mit einer Art Flausch aus einzelnen abragenden Fasern.As already mentioned in the introduction, in the case of integrated formwork, a Shear connection between the formwork elements and the concrete body to be created getting produced. Parts of the textile structure from the inner wall could do this of the formwork element protrude, so that they ultimately in the to be created Concrete bodies are integrated and practically an anchoring between Formwork element and concrete body. The textile structure could do this with extensions in the form of protuberances, protruding tissue parts or other Fiber bandages can be provided or with a kind of fleece from individual protruding fibers.
In den Fig. 1 und 2 ist angedeutet, dass auch das mit Hilfe der dargestellten Schalungselemente
1 zu erstellende Betonbauwerk mit einer eigenen Bewehrung, und
zwar einer Stahlbewehrung versehen werden kann. Dazu werden entsprechende
Bewehrungselemente 9 auf oder in der Schalung angeordnet bevor die Schalung
selbst mit Ortbeton vergossen wird.1 and 2 it is indicated that this also with the help of the formwork elements shown
1 concrete structure to be built with its own reinforcement, and
a steel reinforcement can be provided. To do this,
Claims (12)
- Formwork element having an angled profile-section, comprising a hydraulically bound matrix (2), in which textile fibres are embedded,
characterised in that the formwork element is in the form of a prefabricated structural element having a reinforcement (3) in the form of a textile web, which is continuous at least in one direction and which is formed from the textile fibres, and in that the textile web extends at least over part of the portions of the profile-section which adjoin each other at an angle, so that the textile web forms a three-dimensional reinforcement (3). - Formwork element according to claim 1, characterised in that the web is an interlaid scrim.
- Formwork element according to claim 1, characterised in that the web is a woven fabric.
- Formwork element according to claim 1, characterised in that the web is a mesh.
- Formwork element according to any one of claims 1 to 4, characterised in that the web comprises glass fibres.
- Formwork element according to any one of claims 1 to 5, characterised in that the web comprises carbon fibres.
- Formwork element according to any one of claims 1 to 6, characterised in that the web comprises aramide fibres.
- Formwork element according to any one of claims 1 to 7, characterised in that the matrix (2) is mineral- and preferably cement-bound.
- Formwork element according to any one of claims 1 to 8, characterised in that the profile-section has one or more U-shaped portions.
- Formwork element according to any one of claims 1 to 9, characterised in that the textile web has extensions which are not embedded in the hydraulically bound matrix.
- Formwork element according to claim 10, characterised in that the textile web has extensions in the form of protruding fibre formations.
- Formwork element according to claim 10, characterised in that the textile web has extensions in the form of protruding individual fibres.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19711211 | 1997-03-18 | ||
| DE19711211A DE19711211C2 (en) | 1997-03-18 | 1997-03-18 | Formwork element |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0866191A2 EP0866191A2 (en) | 1998-09-23 |
| EP0866191A3 EP0866191A3 (en) | 1999-11-03 |
| EP0866191B1 true EP0866191B1 (en) | 2003-11-12 |
Family
ID=7823751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98104415A Expired - Lifetime EP0866191B1 (en) | 1997-03-18 | 1998-03-12 | Formwork element |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0866191B1 (en) |
| AT (1) | ATE254223T1 (en) |
| DE (2) | DE19711211C2 (en) |
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| CN101307650B (en) * | 2004-06-09 | 2010-09-01 | 邱则有 | Open formwork element for concrete filling |
| CN1629433B (en) * | 2003-12-15 | 2011-04-27 | 湖南邱则有专利战略策划有限公司 | A shuttering member |
| CN1978816B (en) * | 2005-12-08 | 2011-04-27 | 湖南邱则有专利战略策划有限公司 | Cast-in-situ concrete hollow slab |
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| CN100342100C (en) * | 2003-10-21 | 2007-10-10 | 邱则有 | Hollow form component |
| CN100354486C (en) * | 2003-10-21 | 2007-12-12 | 邱则有 | Thin wall pipe for concrete filling |
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| CN101089315B (en) * | 2003-10-21 | 2015-07-08 | 湖南邱则有专利战略策划有限公司 | Hollow mould component |
| CN100354489C (en) * | 2003-10-30 | 2007-12-12 | 邱则有 | Permanent shuttering member |
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| CN100365219C (en) * | 2003-11-02 | 2008-01-30 | 邱则有 | Concrete filled light mould member |
| CN1296584C (en) * | 2003-11-02 | 2007-01-24 | 邱则有 | Concrete filled light mould member |
| CN1293274C (en) * | 2003-11-02 | 2007-01-03 | 邱则有 | Concrete filled light mould member |
| CN1304710C (en) * | 2003-11-02 | 2007-03-14 | 邱则有 | Concrete filled light mould member |
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| CN101230732B (en) * | 2004-05-25 | 2011-09-07 | 湖南邱则有专利战略策划有限公司 | Bowl-shaped formwork component |
| CN100366842C (en) * | 2004-05-25 | 2008-02-06 | 邱则有 | Basin-like formwork |
| CN100366841C (en) * | 2004-05-25 | 2008-02-06 | 邱则有 | Cavity formwork |
| CN100366840C (en) * | 2004-05-25 | 2008-02-06 | 邱则有 | Lightweight mould member |
| CN101319567B (en) * | 2004-06-09 | 2011-06-08 | 湖南邱则有专利战略策划有限公司 | Opening formwork component for concrete filling |
| CN101319566B (en) * | 2004-06-09 | 2012-05-23 | 湖南邱则有专利战略策划有限公司 | Opening formwork component for concrete filling |
| CN101603368B (en) * | 2004-06-09 | 2012-09-12 | 湖南邱则有专利战略策划有限公司 | Opening mould casing component used for concrete filling |
| DE102022116063A1 (en) | 2022-06-28 | 2023-12-28 | Rheinisch-Westfälische Technische Hochschule Aachen, abgekürzt RWTH Aachen, Körperschaft des öffentlichen Rechts | Multi-layer component for a ceiling, method for producing a multi-layer component and use of textile concrete strips |
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| DE1852949U (en) * | 1962-02-27 | 1962-06-07 | Edwin Horbach | MULTI-LAYER PANEL. |
| US4021258A (en) * | 1972-09-25 | 1977-05-03 | Teijin Limited | Concrete structure and method of preparing same |
| AT344966B (en) * | 1976-08-23 | 1978-08-25 | Oestreicher Friedrich | CONCRETE COMPONENT |
| DE2658622A1 (en) * | 1976-12-23 | 1978-06-29 | Heinz Carl | Concrete bonding formwork element - is formed of sprayed fibre concrete with fibres protruding on rear side |
| DE7714361U1 (en) * | 1977-05-06 | 1977-08-25 | Babcock-Bsh Ag Vormals Buettner- Schilde-Haas Ag, 4150 Krefeld | SLAB, PREFERABLY MADE OF PLASTER, FOR THE PRODUCTION OF LOST FORMWORK |
| DE3165840D1 (en) * | 1981-06-12 | 1984-10-11 | Werner Vogel | Reinforcement in the shape of plastic-laminated fibre cloth |
| GB8322645D0 (en) * | 1983-08-23 | 1983-09-28 | Lambeg Ind Research Assn | Textile reinforced cement structure |
| DE3337268B4 (en) * | 1983-10-13 | 2005-02-17 | Matériaux de Construction International | Tension belt made of a hydraulically setting compound |
| ATE65818T1 (en) * | 1985-11-07 | 1991-08-15 | Akzo Nv | PLASTIC REINFORCEMENT ELEMENT USABLE IN REINFORCED CONCRETE, ESPECIALLY IN PRESTRESSED CONCRETE, REINFORCED CONCRETE PROVIDED WITH SUCH REINFORCEMENT ELEMENTS AND METHODS FOR PRODUCTION OF REINFORCEMENT ELEMENTS AND REINFORCED AND PRESTRESSED CONCRETE. |
| US5763043A (en) * | 1990-07-05 | 1998-06-09 | Bay Mills Limited | Open grid fabric for reinforcing wall systems, wall segment product and methods of making same |
| DE4422448A1 (en) * | 1994-06-29 | 1996-01-11 | Reymann Technik Gmbh | The visible surface of a formwork part forming a precast concrete element |
| DE19525508C2 (en) * | 1994-08-16 | 1999-01-21 | Hochtief Ag Hoch Tiefbauten | Process for improving the load-bearing capacity of components made of reinforced concrete or masonry |
| US5657595A (en) * | 1995-06-29 | 1997-08-19 | Hexcel-Fyfe Co., L.L.C. | Fabric reinforced beam and column connections |
-
1997
- 1997-03-18 DE DE19711211A patent/DE19711211C2/en not_active Expired - Lifetime
-
1998
- 1998-03-12 AT AT98104415T patent/ATE254223T1/en active
- 1998-03-12 DE DE59810119T patent/DE59810119D1/en not_active Expired - Lifetime
- 1998-03-12 EP EP98104415A patent/EP0866191B1/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1629433B (en) * | 2003-12-15 | 2011-04-27 | 湖南邱则有专利战略策划有限公司 | A shuttering member |
| CN101307650B (en) * | 2004-06-09 | 2010-09-01 | 邱则有 | Open formwork element for concrete filling |
| CN1978816B (en) * | 2005-12-08 | 2011-04-27 | 湖南邱则有专利战略策划有限公司 | Cast-in-situ concrete hollow slab |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19711211A1 (en) | 1998-10-01 |
| EP0866191A3 (en) | 1999-11-03 |
| DE19711211C2 (en) | 2001-05-10 |
| ATE254223T1 (en) | 2003-11-15 |
| EP0866191A2 (en) | 1998-09-23 |
| DE59810119D1 (en) | 2003-12-18 |
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