EP1000208B1 - Flat strip lamella for reinforcing building components and method for placing a flat strip lamella on a component - Google Patents
Flat strip lamella for reinforcing building components and method for placing a flat strip lamella on a component Download PDFInfo
- Publication number
- EP1000208B1 EP1000208B1 EP98941330A EP98941330A EP1000208B1 EP 1000208 B1 EP1000208 B1 EP 1000208B1 EP 98941330 A EP98941330 A EP 98941330A EP 98941330 A EP98941330 A EP 98941330A EP 1000208 B1 EP1000208 B1 EP 1000208B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flat strip
- strip lamella
- construction component
- lamella
- adhesive
- 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
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
- E04G23/0225—Increasing or restoring the load-bearing capacity of building construction elements of circular building elements, e.g. by circular bracing
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
- E04G2023/0251—Increasing or restoring the load-bearing capacity of building construction elements by using fiber reinforced plastic elements
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
- E04G2023/0251—Increasing or restoring the load-bearing capacity of building construction elements by using fiber reinforced plastic elements
- E04G2023/0255—Increasing or restoring the load-bearing capacity of building construction elements by using fiber reinforced plastic elements whereby the fiber reinforced plastic elements are stressed
- E04G2023/0259—Devices specifically adapted to stress the fiber reinforced plastic elements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/10—Methods of surface bonding and/or assembly therefor
- Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
- Y10T156/1028—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina by bending, drawing or stretch forming sheet to assume shape of configured lamina while in contact therewith
- Y10T156/103—Encasing or enveloping the configured lamina
Definitions
- the invention relates to a flat strip lamella for reinforcement of load-bearing or load-transmitting Components that consist of a composite structure from a Variety of flexible bends aligned parallel to each other or limp supporting fibers and one the supporting fibers shear-resistant binding matrix exists and the broadside by means of an adhesive attachable to the surface of the component to be reinforced is.
- the invention further relates to a method to attach such flat ribbon slats one component.
- Reinforcement slats of this type are known, for example from WO 96/21785.
- the reinforcement slats are there on elongated and / or flat components used.
- the one binder matrix from one Thermoset, especially made of epoxy resin Reinforcement slats do not allow bends with small ones Bending radii so that over a component edge guided, bow-like reinforcements are not possible with this were.
- bow-shaped reinforcements needed for reinforced concrete beams and reinforced concrete slab beams the relationship between the printing and Secure the tensile zone and avoid shear and transverse cracks.
- the invention is based on the object to develop a flat ribbon slat, the one cross-edge reinforcement of components.
- Another object of the invention is the development of a method for applying such Ribbon slats on components.
- the bending stiffness of the flat strip slats mainly caused by the binder matrix.
- the binder matrix consists of a thermoplastic.
- Such a change can be caused by a local temperature increase Ribbon slat deformed and to the surface contour of the component to be reinforced.
- the Glass transition point of the thermoplastic used Plastic should be above 100 ° C, begin during the flow transition area above 160 ° C should to ensure reliable handling.
- the local heating of the flat ribbon lamella can, for example, with the help of a hot air dryer respectively.
- thermoplastic from the group of polyolefins, vinyl polymers, polyamides, polyesters, Polyacetals, polycarbonates and thermoplastic polyurethanes and ionomers.
- the carrier fibers are useful as carbon fibers trained by a high modulus of elasticity award.
- the base fibers can also be aramid fibers, Glass fibers, polypropylene fibers and the like contain or consist of these.
- Ribbon slats on one across a component edge component to be reinforced is according to the invention suggested that the ribbon slat in its over the intermediate edge leading to the component edge to one above the glass transition point of the thermoplastic Heated binder temperature, in the heated state by the edge angle of the component appropriate angle and bent before or after cooling on the component over the component edge is glued on using an adhesive layer.
- Binder matrix allows the flat ribbon slats in the to apply the prestressed state to a component surface.
- the flat strip slats can be used with their projecting beyond the component surface to be reinforced free ends in the heated state on one clamping element each open or bend and fix it.
- the clamping elements can then be braced against each other be so that the flat strip slat in prestressed Condition on the component surface can.
- a distance can be used to clamp the clamping elements from the component surface to be reinforced Clamping mechanism can be provided.
- the tensioning mechanism can only be at one end of the flat strip lamella attack if the other end through a suitable Clamping element fixed to the component surface becomes.
- thermoplastic according to the invention Binder matrix the possibility of the free ends the flat strip slat under the influence of Pressure and heat in a wave or zigzag shape too press.
- the slat ends are deformed into one with a Glue filled component recess inserted so that the zigzag areas with the pasty glue fill in and after the adhesive has hardened with it form a positive connection.
- Binder matrix can also be used Use reinforcement of columnar components.
- the adhesive consisting of epoxy resin improve, it may be beneficial if the flat ribbon slat on their adhesive side surface of the binder exposing the surface of the fiber for example by roughening or grinding is liberated.
- the flat strip slats shown in the drawing 10 are for the subsequent reinforcement of components 12, as determined by reinforced concrete structures and masonry. They are with their one broadside 14 with help an adhesive preferably made of epoxy resin 16 attached to the surface of the component and additionally with their free ends 32, 34 on component 12 anchored (Fig. 2).
- the component 12 according to FIG. 2 is exemplified as a plate beam made of reinforced concrete, in which the Slat 10 is bow-shaped over the web 22 of the component 12 extends and thereby over the corner edges 24 of the Web 22 is bent.
- the flat strip lamella 10 has a composite structure a variety of aligned in parallel flexible or limp support fibers 26 made of carbon and from one the supporting fibers are shear-proof with each other connecting binder matrix 28 made of a thermoplastic Plastic on.
- the thermoplastic bandage Medium matrix 28 ensures that the flat strip lamella is relatively stiff at use temperature and through Heating up to a temperature above the glass transition point is plastically deformable.
- Fig. 2 also when anchoring one end 32 of the flat strip lamella of plastic deformability under Temperature increase made use of.
- the bent end 32 is glued to component 12 with adhesive 16.
- On the other free end 34 has the flat strip lamella a zigzag-shaped deformation on the under Exposure to pressure and heat has been generated. With this end 34 immerses the flat strip lamella 10 in one recess 35 of component 12 filled with adhesive and forms when the adhesive hardens in it Recess an anchoring.
- Fig. 5 In the embodiment shown in Fig. 5 is one Ribbon strip 10 spirally on a columnar Component 12 wound and glued to this. Around the flat ribbon slat will facilitate winding brought to an elevated temperature so that it easily brought into their spiral shape when wound up can be.
- the invention refers to a flat ribbon slat 10 for Reinforcement of load-bearing or load-transmitting Components 12, for example made of concrete, wood, steel, Natural stone or masonry.
- the flat strip slat 10 has a composite structure of a plurality of parallel aligned, pliable or limp Carrier fibers 26 and one of the carrier fibers are shear-resistant to one another connecting binder matrix 28. She is by means of an adhesive 16 on the broad surface attachable to the component to be reinforced.
- the binder matrix 28 made of a thermoplastic Plastic is made.
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- Architecture (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Working Measures On Existing Buildindgs (AREA)
- Reinforcement Elements For Buildings (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Reinforced Plastic Materials (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Supports For Plants (AREA)
- Package Frames And Binding Bands (AREA)
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
Die Erfindung betrifft eine Flachband-Lamelle zur Verstärkung von lastaufnehmenden oder lastübertragenden Bauteilen, die aus einer Verbundstruktur aus einer Vielzahl von parallel zueinander ausgerichteten biegsamen oder biegeschlaffen Tragfasern und einer die Tragfasern schubfest miteinander verbindenden Bindemittelmatrix besteht und die mittels eines Klebers breitseitig an der Oberfläche des zu verstärkenden Bauteils befestigbar ist. Die Erfindung betrifft ferner ein Verfahren zur Anbringung derartiger Flachband-Lamellen an einem Bauteil.The invention relates to a flat strip lamella for reinforcement of load-bearing or load-transmitting Components that consist of a composite structure from a Variety of flexible bends aligned parallel to each other or limp supporting fibers and one the supporting fibers shear-resistant binding matrix exists and the broadside by means of an adhesive attachable to the surface of the component to be reinforced is. The invention further relates to a method to attach such flat ribbon slats one component.
Verstärkungslamellen dieser Art sind beispielsweise bekannt aus der WO 96/21785. Die Verstärkungslamellen werden dort an langgestreckten und/oder flächigen Bauteilen eingesetzt. Die eine Bindemittelmatrix aus einem Duroplast, insbesondere aus Epoxidharz aufweisenden Verstärkungslamellen lassen keine Biegungen mit kleinen Biegeradien zu, so daß über eine Bauteilkante hinweg geführte, bügelartige Verstärkungen hiermit nicht möglich waren. Bügelförmige Bewehrungen werden beispielsweise benötigt, um bei Stahlbetonbalken und Stahlbetonplattenbalken den Zusammenhang zwischen der Druck- und Zugzone zu sichern und Schub- und Querrisse zu vermeiden. Reinforcement slats of this type are known, for example from WO 96/21785. The reinforcement slats are there on elongated and / or flat components used. The one binder matrix from one Thermoset, especially made of epoxy resin Reinforcement slats do not allow bends with small ones Bending radii so that over a component edge guided, bow-like reinforcements are not possible with this were. For example, bow-shaped reinforcements needed for reinforced concrete beams and reinforced concrete slab beams the relationship between the printing and Secure the tensile zone and avoid shear and transverse cracks.
Ausgehend hiervon liegt der Erfindung die Aufgabe zugrunde, eine Flachband-Lamelle zu entwickeln, die eine kantenübergreifende Verstärkung von Bauteilen ermöglicht. Eine weitere Aufgabe der Erfindung besteht in der Entwicklung eines Verfahrens zur Anbringung derartiger Flachband-Lamellen an Bauteilen.Proceeding from this, the invention is based on the object to develop a flat ribbon slat, the one cross-edge reinforcement of components. Another object of the invention is the development of a method for applying such Ribbon slats on components.
Zur Lösung dieser Aufgabe werden die in den Patentansprüchen 1 sowie 6 bis 9 angegebenen Merkmalskombinationen vorgeschlagen. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den abhängigen Ansprüchen.To solve this problem, the in the claims 1 and 6 to 9 specified combinations of features suggested. Advantageous configurations and Further developments of the invention result from the dependent Claims.
Erfindungsgemäß wird die Biegesteifheit der Flachband-Lamellen vor allem durch die Bindemittelmatrix verursacht. Um die Flachband-Lamelle auch über gebogene Bauteiloberflächen und Bauteilkanten führen zu können, wird gemäß der Erfindung vorgeschlagen, daß die Bindemittelmatrix aus einem thermoplastischen Kunststoff besteht. Durch eine lokale Temperaturerhöhung kann eine solche Flachband-Lamelle verformt und an die Oberflächenkontur des zu verstärkenden Bauteils angepaßt werden. Der Glasumwandlungspunkt des verwendeten thermoplastischen Kunststoffs sollte zweckmäßig oberhalb 100 °C liegen, während der Fließübergangsbereich oberhalb 160 °C beginnen sollte, um eine zuverlässige Handhabung zu gewährleisten. Die lokale Aufheizung der Flachbandlamelle kann vor Ort beispielsweise mit Hilfe eines Heißluftföns erfolgen. According to the invention the bending stiffness of the flat strip slats mainly caused by the binder matrix. Around the flat strip lamella also over curved component surfaces and to be able to guide component edges proposed according to the invention that the binder matrix consists of a thermoplastic. Such a change can be caused by a local temperature increase Ribbon slat deformed and to the surface contour of the component to be reinforced. The Glass transition point of the thermoplastic used Plastic should be above 100 ° C, begin during the flow transition area above 160 ° C should to ensure reliable handling. The local heating of the flat ribbon lamella can, for example, with the help of a hot air dryer respectively.
Für die Bildung der Bindemittelmatrix kommt beispielsweise ein thermoplastischer Kunststoff aus der Gruppe der Polyolefine, Vinylpolymere, Polyamide, Polyesther, Polyacetale, Polycarbonate und thermoplastische Polyurethane und Ionomere in Betracht.For example, for the formation of the binder matrix a thermoplastic from the group of polyolefins, vinyl polymers, polyamides, polyesters, Polyacetals, polycarbonates and thermoplastic polyurethanes and ionomers.
Die Tragfasern sind zweckmäßig als Kohlenstoffasern ausgebildet, die sich durch einen hohen Elastizitätsmodul auszeichnen. Die Tragfasern können aber auch Aramidfasern, Glasfasern, Polypropylenfasern und dergleichen enthalten oder aus diesen bestehen.The carrier fibers are useful as carbon fibers trained by a high modulus of elasticity award. The base fibers can also be aramid fibers, Glass fibers, polypropylene fibers and the like contain or consist of these.
Zur Anbringung der erfindungsgemäßen langgestreckten Flachband-Lamellen an einem über eine Bauteilkante hinweg zu verstärkenden Bauteil wird gemäß der Erfindung vorgeschlagen, daß die Flachband-Lamelle in ihrem über die Bauteilkante hinweg zu führenden Zwischenbereich auf eine oberhalb des Glasumwandlungspunkts des thermoplastischen Bindemittels liegende Temperatur erhitzt, im erhitzten Zustand um einen dem Kantenwinkel des Bauteils entsprechenden Winkel gebogen und vor oder nach dem Abkühlen am Bauteil über die Bauteilkante hinweg mittels einer Kleberschicht aufgeklebt wird.To attach the elongated according to the invention Ribbon slats on one across a component edge component to be reinforced is according to the invention suggested that the ribbon slat in its over the intermediate edge leading to the component edge to one above the glass transition point of the thermoplastic Heated binder temperature, in the heated state by the edge angle of the component appropriate angle and bent before or after cooling on the component over the component edge is glued on using an adhesive layer.
Die erfindungsgemäße Verwendung einer thermoplastischen Bindemittelmatrix erlaubt es, die Flachband-Lamellen im vorgespannten Zustand auf eine Bauteiloberfläche aufzubringen. Die Flachband-Lamellen lassen sich mit ihren über die zu verstarkende Bauteiloberfläche überstehenden freien Enden in erhitztem Zustand auf je ein Spannelement aufziehen oder aufbiegen und daran fixieren. Die Spannelemente können dann gegeneinander verspannt werden, so daß die Flachband-Lamelle in vorgespanntem Zustand auf die Bauteiloberfläche aufgeklebt werden kann. Zum Verspannen der Spannelemente kann ein im Abstand von der zu verstärkenden Bauteiloberfläche angeordneter Spannmechanismus vorgesehen werden. Der Spannmechanismus kann auch nur an einem Ende der Flachband-Lamelle angreifen, wenn das andere Ende durch ein geeignetes Spannelement an der Bauteiloberfläche fixiert wird.The use of a thermoplastic according to the invention Binder matrix allows the flat ribbon slats in the to apply the prestressed state to a component surface. The flat strip slats can be used with their projecting beyond the component surface to be reinforced free ends in the heated state on one clamping element each open or bend and fix it. The clamping elements can then be braced against each other be so that the flat strip slat in prestressed Condition on the component surface can. A distance can be used to clamp the clamping elements from the component surface to be reinforced Clamping mechanism can be provided. The tensioning mechanism can only be at one end of the flat strip lamella attack if the other end through a suitable Clamping element fixed to the component surface becomes.
Weiter besteht mit der erfindungsgemäßen thermoplastischen Bindemittelmatrix die Möglichkeit, die freien Enden der Flachband-Lamelle unter der Einwirkung von Druck und Wärme in eine Wellen- oder Zick-Zack-Form zu pressen. Zur formschlüssigen Verankerung werden die auf diese Weise verformten Lamellenenden in eine mit einem Kleber ausgefüllte Bauteilausnehmung eingeführt, so daß sich die Zick-Zack-Bereiche mit dem pastösen Kleber ausfüllen und nach dem Erhärten des Klebers mit diesem eine formschlüssige Verbindung bilden.There is also the thermoplastic according to the invention Binder matrix the possibility of the free ends the flat strip slat under the influence of Pressure and heat in a wave or zigzag shape too press. For positive anchoring, the are on this way, the slat ends are deformed into one with a Glue filled component recess inserted so that the zigzag areas with the pasty glue fill in and after the adhesive has hardened with it form a positive connection.
Die Flachband-Lamelle mit der erfindungsgemäßen thermoplastischen Bindemittelmatrix läßt sich ferner zur Verstärkung säulenförmiger Bauteile einsetzen. Dazu wird die auf eine Temperatur oberhalb des Glasübergangsbereichs der Bindemittelmatrix erhitzte Flachband-Lamelle auf die mit einem flüssigen Reaktionskleber beschichtete Oberfläche des säulenförmigen Bauteils spiralig aufgewickelt und im aufgewickelten Zustand bei gleichzeitigem Aushärten des Klebers auf Gebrauchstemperatur abgekühlt, Um Flüssigkeitsansammlungen unter der Flachbandwicklung zu vermeiden, ist es von Vorteil, wenn zwischen zwei Spiralwindungen der Flachband-Lamelle ein Abstand eingehalten wird.The flat strip lamella with the thermoplastic according to the invention Binder matrix can also be used Use reinforcement of columnar components. To the temperature is above the glass transition range of the binder matrix heated flat strip lamella onto the one coated with a liquid reaction adhesive Spiral surface of the columnar component wound up and in the wound state at simultaneous hardening of the adhesive to service temperature cooled to keep fluid under to avoid the ribbon winding, it is advantageous if between two spiral turns of the flat strip lamella a distance is maintained.
Um die Haftwirkung zwischen der Flachband-Lamelle und dem beispielsweise aus Epoxidharz bestehenden Kleber zu verbessern, kann es von Vorteil sein, wenn die Flachband-Lamelle an ihrer kleberseitigen Oberfläche von dem Bindemittel unter Freilegung von Tragfaseroberflächen beispielsweise durch Aufrauhen oder Anschleifen befreit wird.To the adhesive effect between the flat strip and for example, the adhesive consisting of epoxy resin improve, it may be beneficial if the flat ribbon slat on their adhesive side surface of the binder exposing the surface of the fiber for example by roughening or grinding is liberated.
Im folgenden wird die Erfindung anhand der in der Zeichnung in schematischer Weise dargestellten Ausführungsbeispiele näher erläutert. Es zeigen
- Fig. 1a
- eine Draufsicht auf einen Ausschnitt aus einer Verstärkungslamelle;
- Fig. 1b
- einen Schnitt entlang der Schnittlinie B-B der Fig. 1a in vergrößerter Darstellung;
- Fig. 2
- einen Schnitt durch einen Stahlbeton-Plattenbalken mit bügelförmig gebogener Verstärkungslamelle;
- Fig. 3
- das eine Ende der Verstärkungslamelle, das in die Bauteilausnehmung der Fig. 2 einführbar ist;
- Fig. 4
- eine Spannvorrichtung zur vorgespannten Anbringung der Verstärkungslamelle an einem Bauteil;
- Fig. 5
- eine ausschnittsweise Seitenansicht eines mit einer Verstärkungslamelle spiralig umwickelten säulenförmigen Bauteils.
- Fig. 1a
- a plan view of a section of a reinforcing lamella;
- Fig. 1b
- a section along the section line BB of Figure 1a in an enlarged view.
- Fig. 2
- a section through a reinforced concrete slab with a bow-shaped reinforcing lamella;
- Fig. 3
- one end of the reinforcing lamella, which can be inserted into the component recess of FIG. 2;
- Fig. 4
- a tensioning device for the prestressed attachment of the reinforcing lamella to a component;
- Fig. 5
- a partial side view of a columnar component spirally wrapped with a reinforcing lamella.
Die in der Zeichnung dargestellten Flachband-Lamellen
10 sind zur nachträglichen Verstärkung von Bauteilen
12, wie Stahlbetonkonstruktionen und Mauerwerk bestimmt.
Sie sind mit ihrer einen Breitseite 14 mit Hilfe
eines vorzugsweise aus Epoxidharz bestehenden Klebers
16 an der Oberfläche des Bauteils befestigt und
zusätzlich mit ihren freien Enden 32,34 am Bauteil 12
verankert (Fig. 2).The flat strip slats shown in the
Das Bauteil 12 nach Fig. 2 ist beispielhaft als Plattenbalken
aus Stahlbeton ausgebildet, bei welchem die
Lamelle 10 sich bügelartig über den Steg 22 des Bauteils
12 erstreckt und dabei über die Eckkanten 24 des
Stegs 22 gebogen ist.The
Die Flachband-Lamelle 10 weist eine Verbundstruktur aus
einer Vielzahl von parallel zueinander ausgerichteten
biegsamen oder biegeschlaffen Tragfasern 26 aus Kohlenstoff
und aus einer die Tragfasern schubfest miteinander
verbindenden Bindemittelmatrix 28 aus einem thermoplastischen
Kunststoff auf. Die thermoplastische Binde
mittelmatrix 28 sorgt dafur, daß die Flachband-Lamelle
bei Gebrauchstemperatur relativ steif ist und durch
Aufheizen auf eine Temperatur oberhalb des Glasumwandlungspunktes
plastisch verformbar ist. Um die zunächst
langgestreckte Flachband-Lamelle 10 über die Ecken 24
zu führen, wird sie an dem Zwischenbereich 30 auf eine
Temperatur oberhalb des Glasumwandlungspunkts der
thermoplastischen Bindemittelmatrix erhitzt und dem
ggf. abgerundeten Eckwinkel entsprechend um 90' plastisch
gebogen. Diese Biegung bleibt nach dem Abkühlen
auf Gebrauchstemperatur erhalten.The
Bei dem in Fig. 2 gezeigten Ausführungsbeispiel wird
auch bei der Verankerung des einen Endes 32 der Flachband-Lamelle
von der plastischen Verformbarkeit unter
Temperaturerhöhung Gebrauch gemacht. Das abgebogene Ende
32 ist mit dem Kleber 16 am Bauteil 12 angeklebt. An
ihrem anderen freien Ende 34 weist die Flachband-Lamelle
eine zick-zack-förmige Verformung auf, die unter
Einwirkung von Druck und Wärme erzeugt worden ist. Mit
diesem Ende 34 taucht die Flachband-Lamelle 10 in eine
mit Kleber ausgefüllte Ausnehmung 35 des Bauteils 12
ein und bildet beim Aushärten des Klebers in dieser
Ausnehmung eine formschlüssige Verankerung.In the embodiment shown in Fig. 2
also when anchoring one
Bei dem in Fig. 4 gezeigten Ausführungsbeispiel werden
die freien Enden 36 der Flachband-Lamelle 10 in erhitztem,
plastisch ver formbarem Zustand auf trommelförmige
Spannelemente 38 aufgezogen und dort verankert. Die
Spannelemente 38 können unter der Einwirkung eines geeigneten
Spannmechanismus in Richtung des Doppelpfeils
39 gegeneinander verschoben werden, so daß die Flachband-Lamelle
10 beim Aufkleben auf das Bauteils 12 mit
Hilfe des Klebers 16 vorgespannt ist. Wird die Vorspannung
bis zum Aushärten des Klebers aufrechterhalten,
erhält man eine Verbesserung der Verstärkungswirkung.In the embodiment shown in Fig. 4
the free ends 36 of the
Bei dem in Fig. 5 gezeigten Ausführungsbeispiel ist eine
Flachbandlamelle 10 spiralig auf ein säulenförmiges
Bauteil 12 aufgewickelt und an diesem angeklebt. Um
das Aufwickeln zu erleichtern, wird die Flachband-Lamelle
auf eine erhöhte Temperatur gebracht, so daß sie
beim Aufwickeln leicht in ihre spiralige Form gebracht
werden kann.In the embodiment shown in Fig. 5 is one
Zusammenfassend ist folgendes festzustellen: Die Erfindung
bezieht sich auf eine Flachband-Lamelle 10 zur
Verstärkung von lastaufnehmenden oder lastübertragenden
Bauteilen 12, beispielsweise aus Beton, Holz, Stahl,
Naturstein oder Mauerwerk. Die Flachband-Lamelle 10
weist eine Verbundstruktur aus einer Vielzahl von parallel
ausgerichteten, biegsamen oder biegeschlaffen
Tragfasern 26 und einer die Tragfasern schubfest miteinander
verbindenden Bindemittelmatrix 28 auf. Sie ist
mittels eines Klebers 16 breitseitig an der Oberfläche
des zu verstärkenden Bauteils befestigbar. Um die Flachband-Lamelle
auch über Eckkanten eines Bauteils biegen
zu können, wird gemäß der Erfindung vorgeschlagen, daß
die Bindemittelmatrix 28 aus einem thermoplastischen
Kunststoff besteht.In summary, the following can be stated: The invention
refers to a
Claims (10)
- Flat strip lamella for reinforcing load-bearing or load-transmitting building components (12), preferably comprised of concrete, which comprises a composite structure of a plurality of parallel-aligned bendable or flexible reinforcing fibers (26) and a binder matrix (28) which joins the reinforcing fibers in a shear-resistant manner, and which can be attached facewise to the outer surface of the reinforcing construction component (12) by means of an adhesive (16), characterized therein, that the binding matrix (28) consists of a thermoplastic resin.
- Flat strip lamella according to claim 1, characterized therein, that the glass transition point of the thermoplastic resin is at least 100°C and the melting point is at least 160°C.
- Flat strip lamella according to claim 1 or 2, characterized therein, that the thermoplastic resin is selected from the group consisting of polyolefins, vinylpolymers, polyamide, polyester, polyacetale, polycarbonate, polyurethane and ionomers.
- Flat strip lamella according to one of claims 1 through 3, characterized therein, that the reinforcing fibers are or include carbon fibers.
- Flat strip lamella according to one of claims 1 through 4, characterized therein, that the carrying fibers are or include aramid fibers, glass fibers or polypropylene fibers.
- Method for attachment of a premanufactured longitudinally extending flat strip lamella according to one of claims 1 through 5 to a construction component (12) over at least one corner edge (24), characterized therein, that the flat strip lamella is heated in the intermediate area (30) to be applied over the corner (24) of the construction component to a temperature above the glass transition point of the thermoplastic binder, that it is bent in the heated condition at an angle corresponding to that of the corner or edge angle of the construction component, and that before or after cooling it is adhered to the construction component over the construction edge by means of a adhesive layer (16).
- Method for attachment of a premanufactured flat strip lamella according to one of claims 1 through 5 to a construction component surface, characterized therein, that the flat strip lamella (10) with each free end in a heated condition is drawn or bent upon a respective tensioning element, and is arrested thereto, and that the tensioning elements (38) are tensioned against each other and the flat strip lamella (10) is adhered to the construction component surface in this pretensioned condition.
- Method for attachment of a flat strip lamella according to one of claims 1 through 5 to a construction component with the aid of an adhesive, characterized therein, that a wave or zigzag shape is pressed in into the free ends (34) of the flat strip lamella (10) under the application of pressure and heat, and while inserting the lamella ends (34) into a construction component recess the wave or zigzag areas are filled with adhesive under production of a form fitting connection.
- Method for attachment of a flat strip lamella according to one of claims 1 through 5 to an construction component with the aid of an adhesive, characterized therein, that the flat strip lamella is heated to a temperature above the glass transition pint of the binder is wound in a spiral manner about a column-shaped construction component and in this wound state is cooled to room temperature with simultaneous hardening of the adhesive.
- Method according to one of claims 6 through 9,
characterized therein, that the reinforcing fibers (26) are at least partially exposed by removal of binder (28) from the surface of the side which is to be connected with the construction component.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19733067 | 1997-07-31 | ||
| DE19733067A DE19733067A1 (en) | 1997-07-31 | 1997-07-31 | Ribbon slat for reinforcing components and method for attaching the ribbon slat to a component |
| PCT/EP1998/004383 WO1999006651A1 (en) | 1997-07-31 | 1998-07-15 | Flat strip lamella for reinforcing building components and method for placing a flat strip lamella on a component |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1000208A1 EP1000208A1 (en) | 2000-05-17 |
| EP1000208B1 true EP1000208B1 (en) | 2001-11-14 |
Family
ID=7837538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98941330A Expired - Lifetime EP1000208B1 (en) | 1997-07-31 | 1998-07-15 | Flat strip lamella for reinforcing building components and method for placing a flat strip lamella on a component |
Country Status (20)
| Country | Link |
|---|---|
| US (1) | US20020124930A1 (en) |
| EP (1) | EP1000208B1 (en) |
| JP (1) | JP2001512200A (en) |
| KR (1) | KR100417892B1 (en) |
| CN (1) | CN1127603C (en) |
| AT (1) | ATE208852T1 (en) |
| AU (1) | AU738490B2 (en) |
| BR (1) | BR9811578A (en) |
| CA (1) | CA2278650C (en) |
| DE (2) | DE19733067A1 (en) |
| DK (1) | DK1000208T3 (en) |
| ES (1) | ES2166612T3 (en) |
| HK (1) | HK1024039A1 (en) |
| HU (1) | HU223369B1 (en) |
| IL (1) | IL134118A (en) |
| NO (1) | NO314002B1 (en) |
| NZ (1) | NZ336978A (en) |
| PL (1) | PL335439A1 (en) |
| PT (1) | PT1000208E (en) |
| WO (1) | WO1999006651A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1331327A1 (en) | 2002-01-29 | 2003-07-30 | Sika Schweiz AG | Reinforcing device |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MXPA02006894A (en) * | 2000-01-13 | 2004-08-12 | Dow Chemical Co | Composites of reinforcing fibers and thermoplastic resins as external structural supports. |
| DE10032595A1 (en) * | 2000-07-07 | 2002-01-17 | Josef Scherer | Reinforcement for building surfaces |
| US20020170651A1 (en) * | 2001-05-15 | 2002-11-21 | Edwards Christopher M. | Method for reinforcing cementitious structures |
| FI20011069A (en) * | 2001-05-22 | 2002-11-23 | Patenttitoimisto T Poutanen Oy | New drives for wood construction |
| KR100471509B1 (en) * | 2001-06-11 | 2005-03-08 | 고조 힌시츠 호쇼켄큐쇼 가부시키가이샤 | Method, material and construction for reinforcing a structure |
| WO2003027416A1 (en) * | 2001-09-25 | 2003-04-03 | Structural Quality Assurance, Inc. | Structure reinforcing construction, reinforcing material, earthquake isolation device, and reinforcing method |
| KR20030070251A (en) * | 2002-02-23 | 2003-08-30 | 윤미숙 | Fiber reinforced permeating concrete block and method for manufacturing same |
| JP3903314B2 (en) * | 2002-10-25 | 2007-04-11 | 清水建設株式会社 | Repair and reinforcement method for long wooden members |
| WO2006039755A1 (en) * | 2004-10-12 | 2006-04-20 | The University Of Southern Queensland | A strengthening system |
| KR100894492B1 (en) * | 2008-04-23 | 2009-05-07 | (주)희상리인포스 | Reinforcing method of ferroconcrete using aramid strip members |
| IT1399040B1 (en) * | 2010-01-27 | 2013-04-05 | Fidia Srl | PROCEDURE FOR THE REINFORCEMENT OF STRUCTURAL ELEMENTS |
| CN101929254B (en) * | 2010-09-01 | 2011-09-28 | 中南大学 | Method for lapping and anchoring fiber sheet around rod to reinforce structural component |
| CN102121316B (en) * | 2011-01-12 | 2012-12-12 | 北京交通大学 | Construction method for reinforcing circular structures by pre-tensioned high-strength fiber cloth |
| US9085898B2 (en) * | 2013-03-04 | 2015-07-21 | Fyfe Co. Llc | System and method of reinforcing a column positioned proximate a blocking structure |
| JP6220542B2 (en) * | 2013-04-15 | 2017-10-25 | ファイベックス株式会社 | Fixing structure of tension member |
| EP3216944B1 (en) * | 2013-06-06 | 2021-09-29 | Sika Technology Ag | Assembly for reinforcing support structures |
| ITMI20131316A1 (en) * | 2013-08-02 | 2015-02-03 | Interbau S R L | ANTI-SEISMIC CONNECTION BETWEEN TWO STRUCTURAL ELEMENTS, PARTICULARLY BETWEEN TWO PREFABRICATED STRUCTURAL ELEMENTS, OF THE BEAM-PILLAR TYPE, BEAM-BEAM, BEAM-TILE OR LIKE. |
| CH710538B1 (en) * | 2014-12-18 | 2018-09-28 | Re Fer Ag | Method for creating prestressed structures or components by means of tension elements made of shape memory alloys and building or component equipped therewith. |
| DE102017126447A1 (en) | 2017-11-10 | 2019-05-16 | CHT Germany GmbH | Coating of fiber products with aqueous polymer dispersions |
| CN109457992B (en) * | 2018-10-30 | 2021-10-08 | 兰州大学 | Method for sticking reinforced concrete structure outside body with anchor |
| CN110453621B (en) * | 2019-07-31 | 2021-06-11 | 湖州泰益智能科技有限公司 | Prevent empting road hard shoulder |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3318901A1 (en) * | 1983-05-25 | 1984-11-29 | Gustav 5140 Erkelenz Stange | Process for reliable fastening of a support attached to an exterior surface of a flat moulding in the region of the surface edges and mould for this |
| DE3843535A1 (en) * | 1988-12-23 | 1990-06-28 | Elastogran Kunststoff Technik | Use of semifinished products of fibre-reinforced plastic for the production of mouldings, in particular bumper brackets |
| DK0803020T3 (en) | 1995-01-09 | 1999-06-14 | Empa | Attachment of reinforcing slats |
| DE19634840A1 (en) * | 1995-08-29 | 1997-03-06 | Erhard Vesper | Mfr. of shaped decorative parts for car interiors etc. reducing waste |
-
1997
- 1997-07-31 DE DE19733067A patent/DE19733067A1/en not_active Withdrawn
-
1998
- 1998-07-15 KR KR10-1999-7007053A patent/KR100417892B1/en not_active IP Right Cessation
- 1998-07-15 JP JP2000505383A patent/JP2001512200A/en active Pending
- 1998-07-15 CN CN98803602A patent/CN1127603C/en not_active Expired - Lifetime
- 1998-07-15 WO PCT/EP1998/004383 patent/WO1999006651A1/en active IP Right Grant
- 1998-07-15 BR BR9811578-2A patent/BR9811578A/en not_active IP Right Cessation
- 1998-07-15 DE DE59802160T patent/DE59802160D1/en not_active Expired - Fee Related
- 1998-07-15 ES ES98941330T patent/ES2166612T3/en not_active Expired - Lifetime
- 1998-07-15 AU AU89752/98A patent/AU738490B2/en not_active Expired
- 1998-07-15 PT PT98941330T patent/PT1000208E/en unknown
- 1998-07-15 AT AT98941330T patent/ATE208852T1/en active
- 1998-07-15 HU HU0004549A patent/HU223369B1/en not_active IP Right Cessation
- 1998-07-15 US US09/341,747 patent/US20020124930A1/en not_active Abandoned
- 1998-07-15 EP EP98941330A patent/EP1000208B1/en not_active Expired - Lifetime
- 1998-07-15 DK DK98941330T patent/DK1000208T3/en active
- 1998-07-15 NZ NZ336978A patent/NZ336978A/en unknown
- 1998-07-15 IL IL13411898A patent/IL134118A/en not_active IP Right Cessation
- 1998-07-15 PL PL98335439A patent/PL335439A1/en not_active Application Discontinuation
- 1998-07-15 CA CA002278650A patent/CA2278650C/en not_active Expired - Lifetime
-
1999
- 1999-09-29 NO NO19994733A patent/NO314002B1/en not_active IP Right Cessation
-
2000
- 2000-05-30 HK HK00103203A patent/HK1024039A1/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1331327A1 (en) | 2002-01-29 | 2003-07-30 | Sika Schweiz AG | Reinforcing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1251152A (en) | 2000-04-19 |
| NO314002B1 (en) | 2003-01-13 |
| DE59802160D1 (en) | 2001-12-20 |
| HUP0004549A2 (en) | 2001-04-28 |
| WO1999006651A1 (en) | 1999-02-11 |
| KR20000070791A (en) | 2000-11-25 |
| ES2166612T3 (en) | 2002-04-16 |
| PL335439A1 (en) | 2000-04-25 |
| WO1999006651A8 (en) | 1999-08-12 |
| DK1000208T3 (en) | 2002-02-25 |
| AU8975298A (en) | 1999-02-22 |
| AU738490B2 (en) | 2001-09-20 |
| JP2001512200A (en) | 2001-08-21 |
| PT1000208E (en) | 2002-05-31 |
| IL134118A0 (en) | 2001-04-30 |
| NO994733L (en) | 1999-09-29 |
| EP1000208A1 (en) | 2000-05-17 |
| HK1024039A1 (en) | 2000-09-29 |
| US20020124930A1 (en) | 2002-09-12 |
| CN1127603C (en) | 2003-11-12 |
| DE19733067A1 (en) | 1999-02-04 |
| HUP0004549A3 (en) | 2002-01-28 |
| BR9811578A (en) | 2000-08-29 |
| HU223369B1 (en) | 2004-06-28 |
| NO994733D0 (en) | 1999-09-29 |
| NZ336978A (en) | 2001-08-31 |
| ATE208852T1 (en) | 2001-11-15 |
| CA2278650A1 (en) | 1999-02-11 |
| IL134118A (en) | 2003-05-29 |
| CA2278650C (en) | 2003-01-21 |
| KR100417892B1 (en) | 2004-02-11 |
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