EP1532331B1 - Method for applying tension members to supporting structures, and device for carrying out said method - Google Patents

Method for applying tension members to supporting structures, and device for carrying out said method Download PDF

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Publication number
EP1532331B1
EP1532331B1 EP03792339A EP03792339A EP1532331B1 EP 1532331 B1 EP1532331 B1 EP 1532331B1 EP 03792339 A EP03792339 A EP 03792339A EP 03792339 A EP03792339 A EP 03792339A EP 1532331 B1 EP1532331 B1 EP 1532331B1
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EP
European Patent Office
Prior art keywords
tension
anchor
tensioning
temporary
concrete
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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 - Fee Related
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EP03792339A
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German (de)
French (fr)
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EP1532331A1 (en
Inventor
Hans-Peter ANDRÄ
Markus Maier
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Leonhardt Andra und Partner Beratende Ingenieure VBI GmbH
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Leonhardt Andra und Partner Beratende Ingenieure VBI GmbH
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Priority to DE10237968A priority Critical patent/DE10237968B3/en
Priority to DE10237968 priority
Application filed by Leonhardt Andra und Partner Beratende Ingenieure VBI GmbH filed Critical Leonhardt Andra und Partner Beratende Ingenieure VBI GmbH
Priority to PCT/EP2003/009091 priority patent/WO2004018801A1/en
Publication of EP1532331A1 publication Critical patent/EP1532331A1/en
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/08Members specially adapted to be used in prestressed constructions
    • E04C5/12Anchoring devices
    • E04C5/127The tensile members being made of fiber reinforced plastics
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00Working measures on existing buildings
    • E04G23/02Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0218Increasing or restoring the load-bearing capacity of building construction elements
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00Working measures on existing buildings
    • E04G23/02Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0218Increasing or restoring the load-bearing capacity of building construction elements
    • E04G2023/0251Increasing or restoring the load-bearing capacity of building construction elements by using fiber reinforced plastic elements
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00Working measures on existing buildings
    • E04G23/02Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0218Increasing or restoring the load-bearing capacity of building construction elements
    • E04G2023/0251Increasing or restoring the load-bearing capacity of building construction elements by using fiber reinforced plastic elements
    • E04G2023/0255Increasing or restoring the load-bearing capacity of building construction elements by using fiber reinforced plastic elements whereby the fiber reinforced plastic elements are stressed
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00Working measures on existing buildings
    • E04G23/02Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0218Increasing or restoring the load-bearing capacity of building construction elements
    • E04G2023/0251Increasing or restoring the load-bearing capacity of building construction elements by using fiber reinforced plastic elements
    • E04G2023/0262Devices specifically adapted for anchoring the fiber reinforced plastic elements, e.g. to avoid peeling off

Description

  • Die Erfindung betrifft ein Verfahren zum Anbringen von gespannten bandförmigen Zuggliedern an Tragwerken (3), insbesondere Betontragwerken, wobei das Zugglied an mindestens einem Ende mittels einer Spannvorrichtung über einen am Zugglied befestigten temporären Spannanker gespannt und anschließend am Tragwerk befestigt wird.The invention relates to a method for attaching tensioned band-shaped tension members to supporting structures (3), in particular concrete structures, wherein the tension member is tensioned at least one end by means of a tensioning device via a temporary tension anchor attached to the tension member and then attached to the structure.
  • Zur Erhöhung der Tragfähigkeit (Ertüchtigung) oder zur Wiederherstellung der ursprünglichen Tragfähigkeit (Sanierung) von Tragwerken, insbesondere Betontragwerken aus Stahlbeton oder Spannbeton, ist es bekannt, nachträglich an der Oberfläche des Tragwerks bandförmige Zugglieder anzubringen, vorzugsweise lamellenartige Zugglieder aus Kunststoff mit zur Verstärkung eingelagerten Fasern, insbesondere Kohlefasern. Werden diese Zugglieder im vorgespannten Zustand verankert, so werden die Tragfähigkeit und Gebrauchstauglichkeit zusätzlich wesentlich verbessert. Hierzu ist es bekannt ( DE 198 49 605 A1 ), die oberflächenbündig angeordneten bandförmigen Zugglieder auf stählernen Grundplatten zu verankern, die in die Betonoberfläche eingelassen sind.To increase the sustainability (upgrading) or restore the original capacity (rehabilitation) of structures, especially concrete structures made of reinforced concrete or prestressed concrete, it is known to subsequently attach to the surface of the structure band-shaped tension members, preferably lamellar tension members made of plastic with fibers embedded for reinforcement , especially carbon fibers. If these tension members anchored in the prestressed state, the load capacity and serviceability are also significantly improved. For this it is known ( DE 198 49 605 A1 ), the flush-mounted band-shaped tension members to anchor on steel base plates, which are embedded in the concrete surface.
  • In entsprechender Weise können auch Tragwerke aus Stahl- oder Holzbauteilen saniert oder ertüchtigt werden.Similarly, structures made of steel or wood components can be rehabilitated or upgraded.
  • Das Herstellen der hierfür notwendigen Aussparung in der Betonoberfläche im Bereich der Verankerungseinrichtungen ist kostspielig und kann zu Beschädigungen der im Beton eingebetteten Bewehrung führen. Erschwerend kommt hinzu, dass diese notwendige Aussparung am spannseitigen Ende des Zugglieds nicht nur von der Größe der zur permanenten Verankerung vorgesehenen Grundplatte, sondern auch vom Spannweg der dort angeordneten Spannvorrichtung abhängt. Diese Aussparungen sind daher bei langen Zuggliedern, die einen größeren Spannweg erfordern, verhältnismäßig groß. Auch die im Betontragwerk verbleibende Grundplatte erhöht die Kosten der Verankerung der Zugglieder.The production of the necessary recess in the concrete surface in the area of anchoring devices is expensive and can cause damage to the concrete embedded reinforcement. To make matters worse, that this necessary recess depends on the tension-side end of the tension member not only on the size of the base plate provided for permanent anchoring, but also on the tensioning of the tensioning device arranged there. These recesses are therefore relatively large for long tension members that require a larger tension travel. The remaining in the concrete structure base plate increases the cost of anchoring the tension members.
  • Bei einem bekannten Verfahren der eingangs genannten Gattung (PATENT ABSTRACTS OF JAPAN vol. 1999, no. 12 (1999-10-29) & JP 11 182061 A (1999-07-06 )) wird das mittels einer gesonderten Spannvorrichtung vorgespannte Zugglied im vorgespannten Zustand an der Tragwerksoberfläche angeklebt. Die Enden des Zugglieds werden mittels Endbefestigungsblechen gehalten, um ein Abschälen zu verhindern. Die Kraftübertragung zwischen dem Zugglied und dem Tragwerk erfolgt ausschließlich durch Klebung.In a known method of the type mentioned ( PATENT ABSTRACTS OF JAPAN vol. 1999, no. 12 (1999-10-29 ) JP 11 182061 A (1999-07-06 )) is glued by means of a separate tensioning device tension member in the prestressed state on the structural surface. The ends of the tension member are held by Endbefestigungsblechen to prevent peeling. The power transmission between the tension member and the structure is done exclusively by gluing.
  • Aufgabe der Erfindung ist es, ein Verfahren der eingangs genannten Gattung so auszubilden, dass die Verankerung oberflächenbündiger Zugglieder wesentlich vereinfacht wird.The object of the invention is to provide a method of the type mentioned in such a way that the anchoring surface-flush tension members is substantially simplified.
  • Diese Aufgabe wird erfindungsgemäß durch das in Anspruch 1 beanspruchte Verfahren gelöst.This object is achieved by the method claimed in claim 1.
  • Da sich das Zugglied während des Spannvorgangs in einem Abstand zu der Oberfläche des Tragwerks befindet, können die Enden des Zugglieds am temporären Spannanker auf einer unter dem Zugglied liegenden Spannplatte des temporären Spannankers durch Klemmung befestigt werden, ohne dass für diese Spannplatte eine Aussparung in der Oberfläche des Tragwerks hergestellt werden müsste. Durch das anschließende Andrücken des Zugglieds an die Oberfläche mittels einer permanenten Ankerklammer wird die kraftschlüssige Verbindung zwischen dem Zugglied und dem Tragwerk hergestellt, wobei das bandförmige Zugglied nunmehr oberflächenbündig angeordnet ist. Die Einleitung der Spannkraft erfolgt unter Ausnutzung der Andrückkraft der Ankerklammer, so dass der zwischen der Ankerklammer und dem Ende des Zugglieds angeordnete temporäre Spannanker entfernt werden kann.Since the tension member is at a distance to the surface of the structure during the tensioning process, the ends of the tension member can be secured to the temporary tension anchor on a lying under the tension member clamping plate of the temporary tension anchor by clamping, without that for this clamping plate a recess in the surface of the structure would have to be made. By the subsequent pressing of the tension member to the surface by means of a permanent anchor bracket, the non-positive connection between the tension member and the supporting structure is produced, wherein the band-shaped tension member is now arranged flush with the surface. The introduction of the clamping force takes place by utilizing the pressing force of the anchor bracket, so that the arranged between the anchor bracket and the end of the tension member temporary tension anchor can be removed.
  • Damit entfällt die Notwendigkeit, eine am Tragwerk verbleibende Grundplatte vorzusehen und eine Aussparung zum Versenken dieser Grundplatte herzustellen. Damit werden dem Verfahren auch neue Anwendungsgebiete erschlossen, bei denen von Hause aus Aussparungen für die Grundplatte und den Spannweg nicht möglich sind, so dass sogar eine Übertragung des Verfahrens auf Stahltragwerke oder Holztragwerke ermöglicht wird.This eliminates the need to provide a base plate remaining on the structure and to produce a recess for countersinking this base plate. Thus, the method also new applications are developed in which from the outset recesses for the base plate and the clamping path are not possible, so that even a transfer of the method to steel structures or wooden structures is possible.
  • Ein weiterer besonderer Vorteil des erfindungsgemäßen Verfahrens besteht darin, dass es auch bei gevouteten Tragwerken, insbesondere Betontragwerken einsetzbar ist, beispielsweise Fahrbahnplatten im Brückenbau, wobei die Spannkraft der Zugglieder unmittelbar am Rand der Voutung eingeleitet werden kann. Dies ist bei der herkömmlichen Art zum Anbringen von gespannten bandförmigen Zuggliedern an Betontragwerken nicht möglich. Zumindest an der Spannankerseite kann die Spannkraft nicht unmittelbar an der Voutung eingeleitet werden, weil die für die Spanneinrichtung erforderliche Aussparung zu weit in den Voutenbereich hineingreifen und möglicherweise die Voutenbewehrung durchstoßen würde.Another particular advantage of the method according to the invention is that it can also be used in coveted structures, in particular concrete structures, for example, roadway plates in bridge construction, wherein the tension of the tension members can be initiated directly at the edge of the Voutung. This is not possible in the conventional manner for attaching tensioned band-shaped tension members to concrete structures. At least on the tension armature side, the tensioning force can not be introduced directly to the haunch because the clearance required for the tensioner would extend too far into the haunch area and possibly pierce the haunch reinforcement.
  • In Weiterbildung des Erfindungsgedankens ist vorgesehen, dass das Zugglied zwischen zwei an beiden Enden des Zugglieds befestigten temporären Spannankern in einem Abstand zur Oberfläche des Tragwerks gespannt wird und dass das Zugglied anschließend nahe an seinen beiden Enden mittels jeweils einer permanenten Ankerklammer auf die Oberfläche gedrückt wird.In development of the invention it is provided that the tension member between two fixed at both ends of the tension member temporary tension anchors is stretched at a distance from the surface of the structure and that the tension member is then pressed close to its two ends by means of a respective permanent anchor bracket on the surface.
  • Die Erfindung betrifft auch eine Vorrichtung zur Durchführung des Verfahrens. Ausgehend von einer bekannten Vorrichtung ( DE 198 49 605 A1 ) mit einem bandförmigen Zugglied, das an mindestens einem Ende mit einem temporären Spannanker verbunden ist, mit einer am temporären Spannanker während des Spannvorgangs angreifenden Spannvorrichtung und mit einer permanenten Verankerunseinrichtung, ist die erfindungsgemäße Vorrichtung durch die Merkmale des Anspruchs 4 gekennzeichnet.The invention also relates to a device for carrying out the method. Starting from a known device ( DE 198 49 605 A1 ) with a band-shaped tension member which is connected at at least one end with a temporary tension anchor, with a tensioning device acting on the temporary tensioning anchor during the tensioning operation and with a permanent anchoring device, the device according to the invention is characterized by the features of claim 4.
  • Im Vergleich zu der bekannten Vorrichtung ist die erfindungsgemäße Vorrichtung wesentlich kostengünstiger, weil keine permanenten Spannplatten am Tragwerk verbleiben und weil hierfür keine Aussparungen in der Oberfläche vorgesehen werden müssen.Compared to the known device, the device according to the invention is much cheaper, because no permanent clamping plates remain on the structure and because this no recesses must be provided in the surface.
  • Das bandförmige Zugglied kann unmittelbar auf die Oberfläche gedrückt werden. In Ausgestaltung des Erfindungsgedankens ist es auch möglich, zwischen dem Zugglied und der Oberfläche des Tragwerks und/oder der Ankerklammer eine Kleberschicht anzuordnen, die nach dem Andrücken des Zugglieds auf die Oberfläche aushärtet.The band-shaped tension member can be pressed directly onto the surface. In an embodiment of According to the invention it is also possible to arrange an adhesive layer between the tension member and the surface of the structure and / or the anchor bracket, which cures after pressing the tension member to the surface.
  • Die Kleberschicht erhöht die kraftübertragende Verbindung zwischen dem Zugglied und der Oberfläche bzw. der Ankerklammer.The adhesive layer increases the force-transmitting connection between the tension member and the surface or the anchor bracket.
  • Es ist auch möglich, im Bereich der Ankerklammer eine reibungserhöhende und/oder lastverteilende Zwischenschicht aufzukleben.It is also possible to glue a friction-increasing and / or load-distributing intermediate layer in the region of the anchor bracket.
  • Weitere vorteilhafte Ausgestaltungen des Erfindungsgedankens sind Gegenstand weiterer Unteransprüche.Further advantageous embodiments of the inventive concept are the subject of further subclaims.
  • Die Erfindung wird nachfolgend an Ausführungsbeispielen näher erläutert, die in der Zeichnung dargestellt sind.
    Es zeigen:
    • Fig. 1 in vereinfachter Darstellungsweise ein Betontragwerk mit einem im Abstand zur Betonoberfläche angeordneten vorgespannten Zugglied,
    • Fig. 2 einen Schnitt entsprechend der Fig. 1, nachdem das Zugglied mittels Ankerklammern gegen die Betonoberfläche gedrückt wurde,
    • Fig. 3 in einem Schnitt entsprechend den Fig. 1 und 2 die Anordnung des bandförmigen Zugglieds an der Betonoberfläche nach dem Entfernen der temporären Spannanker,
    • Fig. 4-6 in Darstellungen entsprechend den Fig. 1-3 die Verfahrensschritte bei Anwendung bei einem gevouteten Betontragwerk,
    • Fig. 7 einen vergrößerten Schnitt längs der Linie VII-VII in Fig. 2,
    • Fig. 8 in einem Schnitt entsprechend der Fig. 3 eine Ausführung mit einer zwischen dem Zugglied und der Betonoberfläche angeordneten Kleberschicht,
    • Fig. 9 einen vergrößerten Schnitt längs der Linie IX-IX in Fig. 8 und
    • Fig. 10-12 abgewandelte Ausführungsformen in Schnitten entsprechend der Fig. 9.
    The invention will be explained in more detail by exemplary embodiments, which are illustrated in the drawing.
    Show it:
    • Fig. 1 in a simplified representation a concrete structure with a spaced apart from the concrete surface prestressed tension member,
    • Fig. 2 a cut according to the Fig. 1 after the tension member has been pressed against the concrete surface by anchor brackets,
    • Fig. 3 in a cut according to the Fig. 1 and 2 the arrangement of the band-shaped tension member on the Concrete surface after removal of the temporary tension anchors,
    • Fig. 4-6 in representations according to the Fig. 1-3 the process steps when applied to a haunched concrete structure,
    • Fig. 7 an enlarged section along the line VII-VII in Fig. 2 .
    • Fig. 8 in a section corresponding to the Fig. 3 an embodiment with an adhesive layer arranged between the tension member and the concrete surface,
    • Fig. 9 an enlarged section along the line IX-IX in Fig. 8 and
    • Fig. 10-12 modified embodiments in sections corresponding to Fig. 9 ,
  • Ein bandförmiges Zugglied 1 (Fig. 1) ist zur Anbringung an einer Betonoberfläche 2 eines Betontragwerks 3 zur Erhöhung der aktuellen Tragfähigkeit vorgesehen. Hierzu wird das zunächst in einem Abstand a zu der Betonoberfläche 2 des Betontragwerks 3 angeordnete Zugglied 1 an seinen beiden Enden jeweils an einem temporären Spannanker 4 befestigt, wobei eine untere Spannplatte 5 des temporären Spannankers, deren Dicke gleich dem Abstand a ist, zwischen der Unterseite des Zuggliedes 1 und der Betonoberfläche 2 zu liegen kommt.A band-shaped tension member 1 ( Fig. 1 ) is provided for attachment to a concrete surface 2 of a concrete structure 3 to increase the current carrying capacity. For this purpose, the first arranged at a distance a to the concrete surface 2 of the concrete structure 3 tension member 1 is attached at its two ends to a temporary tension anchor 4, wherein a lower clamping plate 5 of the temporary tension anchor whose thickness is equal to the distance a, between the bottom the tension member 1 and the concrete surface 2 comes to rest.
  • Sodann wird durch gegenseitiges Spannen der temporären Spannanker 4 die erforderliche Vorspannkraft auf das Zugglied 1 aufgebracht. Vorzugsweise wird hierbei einer der beiden temporären Spannanker 4 am Betontragwerk 3 festgelegt, während der andere temporäre Spannanker 4 mittels einer Spannvorrichtung (nicht dargestellt), wie sie beispielsweise aus der DE 198 49 605 A1 bekannt ist, im erforderlichen Maße vorgespannt wird.Then, by mutual tensioning of the temporary tensioning anchor 4, the required biasing force is applied to the tension member 1. Preferably, in this case one of the two temporary tensioning anchors 4 is fixed to the concrete structure 3, while the other temporary tensioning anchor 4 by means of a tensioning device (not shown), as for example from the DE 198 49 605 A1 is known to be biased to the extent necessary.
  • Sodann wird in geringem Abstand vor jedem der beiden temporären Spannanker 4 jeweils eine Ankerklammer 6 angebracht, die - weil sie später am Betontragwerk 3 verbleibt - in diesem Zusammenhang als permanente Ankerklammer 6 bezeichnet wird. Die permanente Ankerklammer 6 (Fig. 7) wird mittels beidseitig des Zuggliedes 1 im Betontragwerk 3 eingelassenen Schraubbolzen 7 und Spannmuttern 8 so auf das Zugglied 1 gedrückt, dass dieses Zugglied 1 gegen die Betonoberfläche 2 gedrückt wird. Die dabei ausgeübte Anpresskraft bewirkt eine kraftschlüssige Verbindung zwischen dem vorgespannten, oberflächenbündig angeordneten Zugglied 1 und der Betonoberfläche 2.Then, in each case an anchor bracket 6 is attached at a short distance in front of each of the two temporary clamping anchor 4, which - because it later remains on the concrete structure 3 - is referred to in this context as a permanent anchor bracket 6. The permanent anchor bracket 6 ( Fig. 7 ) is pressed by means of both sides of the tension member 1 embedded in the concrete structure 3 bolts 7 and 8 clamping nuts so on the tension member 1 that this tension member 1 is pressed against the concrete surface 2. The applied pressure force causes a frictional connection between the prestressed, flush-mounted tension member 1 and the concrete surface. 2
  • Sodann werden die beiden temporären Spannanker nach dem Andrücken des Zuggliedes 1 auf die Betonoberfläche 2 entfernt (Fig. 3).Then the two temporary clamping anchors are removed after pressing the tension member 1 on the concrete surface 2 ( Fig. 3 ).
  • In den Fig. 4-6, die den Fig. 1-3 entsprechen, ist dargestellt, dass die beschriebenen Verfahrensschritte zur Anbringung des Zuggliedes 1 an einem Betontragwerk 3 auch durchgeführt werden können, wenn die Betonoberfläche 2' an den beiden Enden des Betontragwerks 3 jeweils eine Voutung 2'a aufweist, d.h. einen gegenüber dem ebenen Mittelbereich der Betonoberfläche 2' ansteigenden Bereich. Die beiden temporären Spannanker 4 befinden sich hierbei im Bereich der Voutung 2'a, ohne dass auch hier eine Aussparung im Oberflächenbereich des Betontragwerks 3 erforderlich wäre.In the Fig. 4-6 that the Fig. 1-3 , it is shown that the described method steps for attaching the tension member 1 to a concrete structure 3 can also be performed when the concrete surface 2 'at the two ends of the concrete structure 3 each one Voutung 2'a has, ie a relative to the flat central region of the concrete surface 2 'increasing region. The two temporary tensioning anchors 4 are located in the area of the haunch 2'a, without any need for a recess in the surface area of the concrete structure 3.
  • In der schon vorher beschriebenen Weise wird das Zugglied 1 durch die permanenten Ankerklammern 6 an die Betonoberfläche 2' angedrückt (Fig. 5). Daraufhin werden die temporären Spannanker 4 entfernt (Fig. 6).In the manner already described above, the tension member 1 is pressed by the permanent anchor brackets 6 to the concrete surface 2 '( Fig. 5 ). Then the temporary tension anchors 4 are removed ( Fig. 6 ).
  • Bei beiden beschriebenen Ausführungsformen wird beim Entfernen der temporären Spannanker 4 die Umlenkkraft, die beim Andrücken der Ankerklammern 6 einerseits an der Verankerung der Ankerklammer 6 und andererseits an der Spannplatte 5 des temporären Spannankers 4 entsteht, in einen Anpressdruck zwischen der Ankerklammer 6 und dem Betontragwerk 3 umverteilt. Dadurch wird das Zugglied 1 zwischen der Betonoberfläche 2 bzw. 2' und der Ankerklammer 6 eingeklemmt.In both described embodiments, when removing the temporary tensioning anchors 4, the deflecting force which is produced when the anchor clamps 6 are pressed against the anchoring of the anchor clamp 6 on the one hand and on the clamping plate 5 of the temporary tension anchor 4 on the other hand, is brought into contact pressure between the anchor clamp 6 and the concrete structure 3 redistributed. As a result, the tension member 1 between the concrete surface 2 and 2 'and the anchor bracket 6 is clamped.
  • Wie in den Fig. 8 und 9 gezeigt ist, kann zwischen dem Zugglied 1 und der Betonoberfläche 2 eine Kleberschicht 9 angeordnet werden, die nach dem Andrücken des Zuggliedes 1 auf die Betonoberfläche 2 aushärtet.As in the 8 and 9 is shown, an adhesive layer 9 can be arranged between the tension member 1 and the concrete surface 2, which cures after pressing the tension member 1 on the concrete surface 2.
  • In Fig. 10 ist gezeigt, dass zusätzlich auch zwischen dem Zugglied 1 und der Ankerklammer 6 eine Kleberschicht 10 angeordnet sein kann, die nach dem Andrücken des Zuggliedes 1 auf die Betonoberfläche 2 aushärtet.In Fig. 10 It is shown that in addition between the tension member 1 and the anchor bracket 6, an adhesive layer 10 may be arranged, which cures after pressing the tension member 1 on the concrete surface 2.
  • Beim Ausführungsbeispiel gemäß Fig. 11 ist im Bereich der Ankerklammer 7 auf dem Zugglied 1 mittels der Kleberschicht 10 eine reibungserhöhende und/oder lastverteilende Zwischenschicht 11 aufgeklebt, beispielsweise aus Stahl.According to the embodiment Fig. 11 is in the region of the anchor bracket 7 on the tension member 1 by means of the adhesive layer 10, a friction-increasing and / or load-distributing intermediate layer 11 bonded, for example made of steel.
  • Fig. 12 zeigt eine weitere Ausführungsform, bei der die Ankerklammer 6 auf ihrer Oberseite eine Versteifungsrippe 12 aufweist, die dazu dient, einen gleichmäßigen Klemmdruck zu erzeugen. Stattdessen oder zusätzlich kann auf der Ankerklammer 6 auch eine federartige Lastverteilungsplatte angeordnet sein. Fig. 12 shows a further embodiment in which the anchor bracket 6 has on its upper side a stiffening rib 12 which serves to produce a uniform clamping pressure. Instead or in addition, a spring-like load distribution plate may be arranged on the anchor bracket 6.

Claims (9)

  1. Method for applying tensioned strip-like tension members (1) to surfaces of supporting structures (3), in particular concrete supporting structures, wherein the tension member (1) is tensioned at at least one end by means of a tensioning device via a temporary tensioning anchor (4) fastened to the tension member (1), and is then fastened to the supporting structure (3), characterized in that the tension member (1) is tensioned at a distance (a) from the surface (2) of the supporting structure (3) via a tensioning plate (5) of the temporary tensioning anchor (4) that is arranged between the tension member (1) and the surface of the supporting structure, and in that the tension member (1) is then pressed onto the surface (2) and connected in a force-locking manner thereto by means of at least one permanent anchor clamp (6) which engages over the tension member (1) close to the temporary tensioning anchor (4).
  2. Method according to Claim 1, characterized in that the tension member (1) is tensioned at a distance (a) from the surface (2) between two temporary tensioning anchors (4) fastened to both ends of the tension member (1), and in that the tension member (1) is then pressed close to its two ends onto the surface (2) by means of a respective permanent anchor clamp (6).
  3. Method according to Claim 1 or 2, characterized in that the temporary tensioning anchor (4) or the two temporary tensioning anchors (4) is or are removed after the tension member (1) has been pressed onto the surface (2).
  4. Apparatus for carrying out the method according to one of Claims 1-3, with a supporting structure (3) and a strip-like tension member (1) which is to be applied thereto and which is connected at at least one end to a temporary tensioning anchor (4), with a tensioning device acting on the temporary tensioning anchor (4) during the tensioning operation, and with a permanent anchoring device, wherein the tensioning plate (5) of the temporary tensioning anchor (4) is arranged between the tension member (1) and the surface (2) of the supporting structure, and wherein the apparatus comprises at least one anchor clamp (6) which engages over the tension member (1) close to the temporary tensioning anchor (4) and can be pressed against the surface (2) to obtain the force-locking connection.
  5. Apparatus according to Claim 4, characterized in that an adhesive layer (9) which hardens after the tension member (1) is pressed onto the surface (2) is arranged between the tension member (1) and the surface (2).
  6. Apparatus according to Claim 4 or 5, characterized in that an adhesive layer (10) which hardens after the tension member (1) is pressed onto the surface (2) is arranged between the tension member (1) and the anchor clamp (6).
  7. Apparatus according to Claim 4, characterized in that a friction-increasing and/or load-distributing intermediate layer (11) is adhesively bonded to the tension member (1) in the region of the anchor clamp (6).
  8. Apparatus according to Claim 4, characterized in that the anchor clamp (6) is provided on its upper side with at least one reinforcing rib (12).
  9. Apparatus according to Claim 4, characterized in that spring-like load distribution plates are arranged on the anchor clamp (6).
EP03792339A 2002-08-20 2003-08-16 Method for applying tension members to supporting structures, and device for carrying out said method Expired - Fee Related EP1532331B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE10237968A DE10237968B3 (en) 2002-08-20 2002-08-20 Process for mounting a pre-stressed tension element on a concrete supporting framework comprises pre-stressing the tension element via a temporary anchor and then pressing the tension element onto the surface using a permanent anchor clamp
DE10237968 2002-08-20
PCT/EP2003/009091 WO2004018801A1 (en) 2002-08-20 2003-08-16 Method for applying tension members to supporting structures, and device for carrying out said method

Publications (2)

Publication Number Publication Date
EP1532331A1 EP1532331A1 (en) 2005-05-25
EP1532331B1 true EP1532331B1 (en) 2009-04-08

Family

ID=30010619

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03792339A Expired - Fee Related EP1532331B1 (en) 2002-08-20 2003-08-16 Method for applying tension members to supporting structures, and device for carrying out said method

Country Status (10)

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US (1) US7296385B2 (en)
EP (1) EP1532331B1 (en)
JP (1) JP4271146B2 (en)
KR (1) KR20050058424A (en)
AT (1) AT428037T (en)
AU (1) AU2003255452A1 (en)
DE (2) DE10237968B3 (en)
DK (1) DK1532331T3 (en)
ES (1) ES2325580T3 (en)
WO (1) WO2004018801A1 (en)

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US8904721B2 (en) * 2008-06-12 2014-12-09 University Of Utah Research Foundation Anchoring, splicing and tensioning elongated reinforcement members
AU2009257335A1 (en) * 2008-06-12 2009-12-17 University Of Utah Research Foundation Anchoring, splicing and tensioning elongated reinforcement members
WO2011130298A1 (en) 2010-04-13 2011-10-20 The University Of Utach Research Foundation Sheet and rod attachment apparatus and system
EP2447446A1 (en) * 2010-10-28 2012-05-02 Sika Technology AG Device for fastening tension members to reinforced concrete beams
FR2969196B1 (en) 2010-12-15 2014-02-07 Soletanche Freyssinet METHOD FOR REINFORCING A CONSTRUCTION STRUCTURE USING AT LEAST ONE REINFORCING STRIP
CN102094536B (en) * 2011-02-28 2013-12-18 卓清 Array type waved tooth clamp anchor
JP2013217118A (en) * 2012-04-10 2013-10-24 Kawashima Kensetsu:Kk Brace structure of wooden building and seismic strengthening structure of existing wooden building
CH706630B1 (en) * 2013-05-14 2013-12-31 S & P Clever Reinforcement Company Ag Method for pretensioning steel structure e.g. iron bridge, involves vertically driving lifting element to polymer tapes in region between end anchorages for causing traction force tensioning between end regions of polymer tapes
CN103572970B (en) * 2013-11-12 2016-02-24 中建三局建设工程股份有限公司 The stopping means of automatic adjustment intermediate plate stroke and using method thereof
WO2015097212A1 (en) * 2013-12-23 2015-07-02 Tenroc Technologies Ab A pre-stressing device, and a method for reinforcing a structural member
CA2989725A1 (en) * 2015-06-26 2016-12-29 Danmarks Tekniske Universitet Anchorage device
CN104912336B (en) * 2015-07-06 2017-04-05 天津银龙预应力材料股份有限公司 A kind of self-locking device of deformed bar tensioning
CN105862608B (en) * 2016-05-20 2017-09-19 东南大学 The automation tensioning system and method for a kind of pre-stress fibre plate reinforcing slab plate
US10669730B1 (en) * 2018-11-19 2020-06-02 Dirk A. Taylor Method and apparatus for repairing retaining walls

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DE19753318A1 (en) * 1997-12-02 1999-06-10 Sika Ag Reinforcing element for load-bearing or load-transmitting components and method for fastening it to a component surface
JP4004616B2 (en) * 1997-12-24 2007-11-07 オリエンタル建設株式会社 Reinforcement method of concrete member by fiber material tension
CA2321896C (en) 1998-02-26 2005-10-18 Urs Meier Method and device for applying pretensed tension-proof reinforcing strips to a construction
DE19849605A1 (en) * 1998-10-28 2000-05-04 Goehler Andrae Und Partner Ber Tensioning device for a band-shaped tension member
FR2790500B1 (en) * 1999-03-01 2002-06-07 Freyssinet Int Stup Method and device for reinforcing a concrete structure
KR20010036486A (en) * 1999-10-08 2001-05-07 박상일 Method for designing and fabricating multi-step tension prestressed girder
DE10040628A1 (en) * 2000-08-16 2002-02-28 Josef Scherer Device for tightening reinforcing elements in pre-stressed concrete structures includes tensioning means with mechanical drive to contact coupling member connected to reinforcement element and second coupling member connected to structure
BE1013910A3 (en) * 2001-01-10 2002-12-03 Immo Emergo Nv Pretensioned strengthening member for bridge span, is attached to underside of span to overcome sagging

Also Published As

Publication number Publication date
JP2005535814A (en) 2005-11-24
US7296385B2 (en) 2007-11-20
JP4271146B2 (en) 2009-06-03
EP1532331A1 (en) 2005-05-25
AU2003255452A1 (en) 2004-03-11
WO2004018801A1 (en) 2004-03-04
US20050247016A1 (en) 2005-11-10
DE50311396D1 (en) 2009-05-20
DK1532331T3 (en) 2009-08-10
DE10237968B3 (en) 2004-02-05
KR20050058424A (en) 2005-06-16
ES2325580T3 (en) 2009-09-09
AT428037T (en) 2009-04-15

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