EP2372036A1 - Anchoring device for pre-stressed reinforcement - Google Patents
Anchoring device for pre-stressed reinforcement Download PDFInfo
- Publication number
- EP2372036A1 EP2372036A1 EP11450033A EP11450033A EP2372036A1 EP 2372036 A1 EP2372036 A1 EP 2372036A1 EP 11450033 A EP11450033 A EP 11450033A EP 11450033 A EP11450033 A EP 11450033A EP 2372036 A1 EP2372036 A1 EP 2372036A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wedge
- anchor
- reduction
- tendon
- anchoring
- 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.)
- Withdrawn
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/08—Members specially adapted to be used in prestressed constructions
- E04C5/12—Anchoring devices
- E04C5/122—Anchoring devices the tensile members are anchored by wedge-action
Definitions
- the invention relates to an anchorage for tendons, in particular tension strands, for prestressing of structures, with an anchor body in which each tie member each an anchor wedge and a reduction wedge with oriented in the direction of the structure to be pretensioned wedge tips are mounted axially displaceable in succession about the clamping member.
- Such anchoring for tendons is common, for example, in bridge construction.
- a plurality of tendons in particular prestressing strands or tie rods, anchored in vorzuspannenden structure.
- the loaded on train tendons are also anchored at the other end accordingly and give the produced structure, such as a bridge, the required stability.
- An anchorage for tendons of the subject type is for example from the EP 0 197 912 B1 known.
- For the preparation of the anchoring a support of the anchor body via an intermediate member to the anchor plate on vorzuspannenden structure is required. This intermediate member is removed before the tensioning of the tendons, whereby the manufacturing cost is increased.
- the aim of the present invention is to provide an abovementioned anchoring, which is particularly suitable for highly dynamic applications.
- the anchoring is to achieve a high static and dynamic resistance of the tendons. Disadvantages of known constructions should be avoided or at least reduced.
- the object of the invention is achieved by an above-mentioned anchoring for tendons, wherein between each anchor wedge and each reduction wedge in each case a pressure ring is arranged, so that displacement of the anchor wedge results in a displacement of the reduction wedge.
- a pair of wedges consisting of the anchor wedge and the reduction wedge provided, which cooperates due to the interposed pressure ring.
- the tandem arrangement of the anchor wedge and reduction wedge at each tendon allows anchoring of the tendon by force on the anchor wedge, which thus causes a shift of the reduction wedge on the pressure ring.
- the use of an intermediate member between the anchor body and the anchor plate on the vorzuspannenden structure is not required.
- the anchor body and the pressure ring are preferably made of medium strength steel, and the anchor wedge is preferably made of high quality surface hardened steel. These materials are able to withstand the occurring forces.
- the anchor body is formed from a base body for receiving the anchor wedge and a preferably connectable to the body wedge bushing for receiving the reduction wedge , In such a two-part embodiment of the anchor body, the manufacture and assembly is simplified.
- the base body and the wedge bushing of the anchor body are screwed together via a thread.
- the wedge can also be inserted only in a corresponding bore or recess of the anchor body without thread.
- each pressure ring has a substantially T-shaped cross-section.
- the wedge tip of the anchor wedge acts on that part of the pressure ring with a smaller diameter and transmits the forces on the opposite part of the pressure ring with a larger diameter and subsequently on the broad part of the reduction wedge.
- Each reduction wedge is preferably formed of a material which is softer than the material of the tendon. This ensures that the surface of the reduction wedge presses into the tendon, in particular the tension strands, and causes it to optimally support it.
- the tendon made of steel or another relatively hard metal are in particular plastic, soft metal or hardwood as materials for the reduction wedge especially.
- the anchor wedge is preferably made of surface hardened steel.
- the reduction wedge may also have a coating on the surface facing the tendon. This coating is preferably formed of a softer material than that of the tendon.
- a sleeve can be arranged around the tensioning element, which sleeve presses into the surface of the tensioning element during anchoring. Accordingly, the sleeve is also formed of a softer material than the material of the tendon.
- Each anchor wedge and / or each reduction wedge may also consist of several ring sector-shaped segments, for example of two or three segments.
- an anchor body is provided for the storage of a plurality of tendons. Due to the construction of the anchoring according to the invention, it is possible every tendon to individually pretension and anchor, without requiring pressing with enormously high pressing forces.
- Fig. 1 shows a cross section of an anchorage for a tendon 1 in particular in the form of a prestressing strand for prestressing of structures 2, for example of bridges.
- the tendon 1 is arranged in the building 2.
- the anchoring for the tendon 1 is based on an anchor plate 3 on the vorzuspannenden structure 2 from.
- the anchoring consists of an anchor body 4, in which a pair of wedges, consisting of an anchor wedge 5 and a reduction wedge 6, are mounted axially displaceable around the tendon 1 with wedge tips oriented in the direction of the structure 2 to be pretensioned.
- the anchor body 4 consists of a base body 8, in which the anchor wedge 5 is arranged, and a wedge bushing 9, in which the reduction wedge 6 is arranged.
- the anchor wedge 5 is preferably made of surface hardened steel. This is the surface of the anchor wedge 5 harder than the steel usually used as the material for the tendon 1.
- the reduction wedge 6 is made of a material which is softer than that of the tendon 1, for example made of plastic, soft metal or hardwood. According to the invention, a pressure ring 7 is arranged between the anchor wedge 5 and the reduction wedge 6, so that upon displacement of the anchor wedge 5 a displacement of the reduction wedge 6 results.
- Fig. 2 shows the anchorage for a tendon 1 according to Fig. 1 in exploded view.
- the components namely the main body 8 and the wedge 9 of the anchor body 4, the anchor wedge 5, the reduction wedge 6 and the pressure ring 7 can be seen.
- a structure 11, in particular notches or grooves, may be provided, through which the anchoring is ensured by clamping.
- the reduction wedge 6 may be provided on the side facing the tendon 1 with a coating 12, preferably of a softer material than the material of the tendon 1.
- Fig. 3 shows the situation when tensioning the tendon 1, wherein in the direction of arrow X, a corresponding clamping force is exerted on the tendon 1.
- a screw connection of the wedge bush 9 with the main body 8 of the anchor body 4 via a thread 10 is not absolutely necessary. If the wedge bushing 9 can be supported on the anchor plate 3, a construction is conceivable in which the wedge bushing 9 is merely inserted into a bore or recess provided in the main body 8 of the anchor body 4 (not shown).
- Fig. 4 shows the anchoring of the tendon 1 in vorzuspannenden structure 2, wherein a corresponding pressing force along the arrows Y is exerted on the anchor wedge 5.
- This results in an axial displacement of the anchor wedge 5 in the direction of the structure 2 until the tip of the anchor wedge 5 impinges on the pressure ring 7 and this moves in the direction of reduction wedge 6.
- This will a part of the force transmitted to the reduction wedge 6, which is pressed into the corresponding conical bore in the wedge 9 and is thereby compressed and penetrates into the surface of the tendon 1.
- the tendons 1 can be anchored individually under the exercise of relatively low forces Y. As a result, pressing with lower forces are required, making handling much easier.
- Fig. 5 shows the top view of an anchorage for a plurality (here 19) of tendons 1 in a common anchor body. 4
- Fig. 6 shows a section through the anchorage according to Fig. 5 along the section line VI-VI in a slightly enlarged scale.
- an anchor wedge 5, a reduction wedge 6 and the intermediate pressure ring 7 in the common anchor body 4 are arranged.
- the anchor body 4 is supported on a perforated plate 13 and the underlying anchor plate 3 on vorzuspannenden structure 2 from.
- the perforated plate 13 may be formed, for example, of plastic. Due to the construction of the anchoring according to the invention, the tensioning and relaxing of the tendons 1 can also be done individually. As a result, a press with correspondingly lower pressing force is required for tensioning and relaxing the individual tendons 1. Alternatively, of course, several or all of the tendons 1 anchoring with a correspondingly large press with a correspondingly high pressing force can be simultaneously stretched or relaxed.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
Description
Die Erfindung betrifft eine Verankerung für Spannglieder, insbesondere Spannlitzen, zum Vorspannen von Baukörpern, mit einem Ankerkörper, in dem je Spannglied jeweils ein Ankerkeil und ein Reduktionskeil mit in Richtung des vorzuspannenden Baukörpers orientierten Keilspitzen hintereinander um das Spannglied axial verschiebbar gelagert ist.The invention relates to an anchorage for tendons, in particular tension strands, for prestressing of structures, with an anchor body in which each tie member each an anchor wedge and a reduction wedge with oriented in the direction of the structure to be pretensioned wedge tips are mounted axially displaceable in succession about the clamping member.
Eine derartige Verankerung für Spannglieder ist beispielsweise im Brückenbau üblich. Dabei wird meist eine Vielzahl an Spanngliedern, insbesondere Spannlitzen oder Spannstäben, im vorzuspannenden Baukörper verankert. Die auf Zug belasteten Spannglieder werden am anderen Ende ebenfalls entsprechend verankert und verleihen dem herzustellenden Bauwerk, beispielsweise einer Brücke, die erforderliche Stabilität. Eine Verankerung für Spannglieder der gegenständlichen Art ist beispielsweise aus der
Insbesondere bei wechselnden dynamischen Beanspruchungen, wie sie insbesondere bei vorgespannten Brücken, wie Hängebrücken oder Schrägseilbrücken auftreten, ist eine Überprüfung und gegebenenfalls Korrektur der Vorspannung häufig notwendig, um eine entsprechend hohe Sicherheit aufweisen zu können.In particular, with changing dynamic stresses, as they occur in particular in prestressed bridges, such as suspension bridges or cable-stayed bridges, a review and, where appropriate, correction of the bias is often necessary to have a correspondingly high security can.
Ziel der vorliegenden Erfindung ist die Schaffung einer oben genannten Verankerung, die insbesondere für hochdynamische Anwendungen besonders geeignet ist. Mit der Verankerung soll eine hohe statische und dynamische Widerstandsfähigkeit der Spannglieder erreicht werden. Nachteile bekannter Konstruktionen sollen vermieden oder zumindest reduziert werden.The aim of the present invention is to provide an abovementioned anchoring, which is particularly suitable for highly dynamic applications. The anchoring is to achieve a high static and dynamic resistance of the tendons. Disadvantages of known constructions should be avoided or at least reduced.
Gelöst wird die erfindungsgemäße Aufgabe durch eine oben genannte Verankerung für Spannglieder, wobei zwischen jedem Ankerkeil und jedem Reduktionskeil jeweils ein Druckring angeordnet ist, sodass bei Verschiebung des Ankerkeils eine Verschiebung des Reduktionskeils resultiert. Im Ankerkörper ist somit je Spannglied ein Keilpaar, bestehend aus dem Ankerkeil und dem Reduktionskeil, vorgesehen, welches aufgrund des dazwischen angeordneten Druckrings zusammenwirkt. Die tandemartige Anordnung des Ankerkeils und Reduktionskeils bei jedem Spannglied ermöglicht eine Verankerung des Spanngliedes durch Krafteinwirkung auf den Ankerkeil, der somit eine Verschiebung des Reduktionskeils über den Druckring bewirkt. Die Verwendung eines Zwischenglieds zwischen dem Ankerkörper und der Ankerplatte an dem vorzuspannenden Baukörper ist nicht erforderlich. Da somit auch keine Verschiebung des Ankerkörpers notwendig ist, können die einzelnen Spannglieder einer Verankerung für eine Vielzahl von Spanngliedern unabhängig voneinander vorgespannt und verankert werden. In der Folge sind Spannpressen mit geringerer Presskraft notwendig, deren Handhabung einfacher ist. Der Ankerkörper und der Druckring sind vorzugsweise aus Stahl von mittlerer Festigkeit hergestellt, der Ankerkeil besteht vorzugsweise aus hochwertigem Oberflächen-gehärteten Stahl. Diese Materialien halten den auftretenden Kräften entsprechend stand.The object of the invention is achieved by an above-mentioned anchoring for tendons, wherein between each anchor wedge and each reduction wedge in each case a pressure ring is arranged, so that displacement of the anchor wedge results in a displacement of the reduction wedge. In the anchor body is thus per tendon a pair of wedges, consisting of the anchor wedge and the reduction wedge provided, which cooperates due to the interposed pressure ring. The tandem arrangement of the anchor wedge and reduction wedge at each tendon allows anchoring of the tendon by force on the anchor wedge, which thus causes a shift of the reduction wedge on the pressure ring. The use of an intermediate member between the anchor body and the anchor plate on the vorzuspannenden structure is not required. Thus, since no displacement of the anchor body is necessary, the individual tendons an anchor for a variety of tendons can be independently biased and anchored. As a result, clamping presses with lower pressing force are necessary, their handling is easier. The anchor body and the pressure ring are preferably made of medium strength steel, and the anchor wedge is preferably made of high quality surface hardened steel. These materials are able to withstand the occurring forces.
Um die Herstellung des Ankerkörpers zu erleichtern und die Anordnung der Ankerkeile und Reduktionskeile innerhalb der dafür vorgesehenen konischen Bohrungen zu ermöglichen, ist vorgesehen, dass der Ankerkörper aus einem Grundkörper zur Aufnahme des Ankerkeils und einer mit dem Grundkörper vorzugsweise verbindbaren Keilbüchse zur Aufnahme des Reduktionskeils gebildet ist. Bei einer derartigen zweiteiligen Ausführung des Ankerkörpers ist die Herstellung und der Zusammenbau vereinfacht.In order to facilitate the manufacture of the anchor body and to allow the arrangement of the anchor wedges and reduction wedges within the designated conical holes, it is provided that the anchor body is formed from a base body for receiving the anchor wedge and a preferably connectable to the body wedge bushing for receiving the reduction wedge , In such a two-part embodiment of the anchor body, the manufacture and assembly is simplified.
Vorteilhafterweise sind der Grundkörper und die Keilbüchse des Ankerkörpers miteinander über ein Gewinde verschraubt. Dies stellt eine einfache und wirkungsvolle Verbindungsmöglichkeit der beiden Teile des Ankerkörpers dar. Die Keilbüchse kann aber auch bloß in einer entsprechenden Bohrung oder Ausnehmung des Ankerkörpers ohne Gewinde eingesteckt werden.Advantageously, the base body and the wedge bushing of the anchor body are screwed together via a thread. This represents a simple and effective way of connecting the two parts of the anchor body. However, the wedge can also be inserted only in a corresponding bore or recess of the anchor body without thread.
Um eine Übertragung der axialen Verschiebung des Ankerkeils auf den Reduktionskeil zu ermöglichen, weist jeder Druckring im Wesentlichen T-förmigen Querschnitt auf. Die Keilspitze des Ankerkeils wirkt dabei auf jenen Teil des Druckrings mit geringerem Durchmesser und überträgt die Kräfte auf den gegenüberliegenden Teil des Druckrings mit größerem Durchmesser und in der Folge auf den breiten Teil des Reduktionskeils. Durch eine derartige Konstruktion werden die auftretenden Kräfte optimal verteilt.In order to enable a transfer of the axial displacement of the anchor wedge on the reduction wedge, each pressure ring has a substantially T-shaped cross-section. The wedge tip of the anchor wedge acts on that part of the pressure ring with a smaller diameter and transmits the forces on the opposite part of the pressure ring with a larger diameter and subsequently on the broad part of the reduction wedge. By such a construction, the forces are optimally distributed.
Jeder Reduktionskeil ist vorzugsweise aus einem Material, welches weicher ist als das Material des Spanngliedes, gebildet. Dadurch wird gewährleistet, dass sich die Oberfläche des Reduktionskeils in das Spannglied, insbesondere die Spannlitzen, einpresst und einen optimalen Halt desselben bewirkt. Bei der üblichen Ausführung des Spanngliedes aus Stahl bzw. einem anderen relativ harten Metall eignen sich insbesondere Kunststoff, Weichmetall oder Hartholz als Materialien für den Reduktionskeil besonders.Each reduction wedge is preferably formed of a material which is softer than the material of the tendon. This ensures that the surface of the reduction wedge presses into the tendon, in particular the tension strands, and causes it to optimally support it. In the usual embodiment of the tendon made of steel or another relatively hard metal are in particular plastic, soft metal or hardwood as materials for the reduction wedge especially.
Um einen optimalen Halt des Ankerkeils am Spannglied zu ermöglichen, ist dieser an der dem Spannglied zugewandten Oberfläche mit einer Struktur, insbesondere Kerben, Rillen oder dergleichen, versehen. Der Ankerkeil besteht vorzugsweise aus Oberflächen-gehärtetem Stahl.In order to allow an optimal hold of the anchor wedge on the tendon, this is provided on the tendon facing surface with a structure, in particular notches, grooves or the like. The anchor wedge is preferably made of surface hardened steel.
Der Reduktionskeil kann an der dem Spannglied zugewandten Oberfläche auch eine Beschichtung aufweisen. Diese Beschichtung ist vorzugsweise aus einem weicheren Material als jenes des Spanngliedes gebildet.The reduction wedge may also have a coating on the surface facing the tendon. This coating is preferably formed of a softer material than that of the tendon.
Ebenso kann im Bereich jedes Reduktionskeils eine Hülse um das Spannglied angeordnet werden, welche sich bei der Verankerung in die Oberfläche des Spanngliedes einpresst. Demgemäß ist die Hülse auch aus einem weicheren Material als das Material des Spanngliedes gebildet.Likewise, in the region of each reduction wedge, a sleeve can be arranged around the tensioning element, which sleeve presses into the surface of the tensioning element during anchoring. Accordingly, the sleeve is also formed of a softer material than the material of the tendon.
Jeder Ankerkeil und bzw. oder jeder Reduktionskeil kann auch aus mehreren ringsektorförmigen Segmenten, beispielsweise aus zwei oder drei Segmenten, bestehen.Each anchor wedge and / or each reduction wedge may also consist of several ring sector-shaped segments, for example of two or three segments.
Vorteilhafterweise ist ein Ankerkörper für die Lagerung einer Vielzahl an Spanngliedern vorgesehen. Durch die erfindungsgemäße Konstruktion der Verankerung ist es möglich jedes Spannglied einzeln vorzuspannen und zu verankern, ohne dass dafür Pressen mit enorm hohen Presskräften erforderlich wäre.Advantageously, an anchor body is provided for the storage of a plurality of tendons. Due to the construction of the anchoring according to the invention, it is possible every tendon to individually pretension and anchor, without requiring pressing with enormously high pressing forces.
Die vorliegende Erfindung wird anhand der beigefügten Zeichnungen näher erläutert.The present invention will be explained in more detail with reference to the accompanying drawings.
Darin zeigen:
- Fig. 1
- einen Querschnitt durch eine Ausführungsform einer Verankerung für ein Spannglied;
- Fig. 2
- die Verankerung gemäß
Fig. 1 in Explosionsdarstellung; - Fig. 3
- die Verankerung gemäß
Fig. 1 beim Spannen des Spanngliedes; - Fig. 4
- die Verankerung gemäß
Fig. 3 beim Verankerungsvorgang; - Fig. 5
- eine Draufsicht auf eine Verankerung für eine Vielzahl von Spanngliedern; und
- Fig. 6
- einen Querschnitt durch die Verankerung gemäß
Fig. 5 entlang der Schnittlinie VI-VI.
- Fig. 1
- a cross-section through an embodiment of an anchor for a tendon;
- Fig. 2
- anchoring according to
Fig. 1 in exploded view; - Fig. 3
- anchoring according to
Fig. 1 during tensioning of the tendon; - Fig. 4
- anchoring according to
Fig. 3 during the anchoring process; - Fig. 5
- a plan view of an anchorage for a plurality of tendons; and
- Fig. 6
- a cross section through the anchorage according to
Fig. 5 along the section line VI-VI.
Bei der Anordnung mehrerer Spannglieder 1, vorzugsweise einer Vielzahl von Spanngliedern 1, in einem Ankerkörper 4 können die Spannglieder 1 einzeln unter Ausübung relativ geringer Kräfte Y verankert werden. Dadurch sind Pressen mit geringeren Kräften erforderlich, wodurch die Handhabung wesentlich erleichtert wird.In the arrangement of a plurality of
Claims (10)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT4532010A AT509076B1 (en) | 2010-03-22 | 2010-03-22 | ANCHORING FOR SPANNING MEMBERS |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2372036A1 true EP2372036A1 (en) | 2011-10-05 |
Family
ID=43877269
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11450033A Withdrawn EP2372036A1 (en) | 2010-03-22 | 2011-03-09 | Anchoring device for pre-stressed reinforcement |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2372036A1 (en) |
AT (1) | AT509076B1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103343593A (en) * | 2013-07-25 | 2013-10-09 | 长沙理工大学 | Prestressed tendon anchorage device capable of being freely regulated and controlled at high precision |
CN111594242A (en) * | 2020-05-15 | 2020-08-28 | 浙江聚能岩土锚固研究有限公司 | Prestressed expanding shell anchor rod and construction method thereof |
CN113897863A (en) * | 2021-09-06 | 2022-01-07 | 龚鹏鹏 | Combined prestressed anchorage device |
CN114592512A (en) * | 2022-03-11 | 2022-06-07 | 深圳市工勘岩土集团有限公司 | Anchor structure for reducing size and thickness of anchor backing plate |
Families Citing this family (3)
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CN103539042B (en) * | 2012-07-16 | 2015-09-16 | 甘肃第一建设集团有限责任公司 | Spiral anchor restorer and using method thereof |
CN103009478B (en) * | 2012-12-21 | 2014-10-01 | 中铁九局集团有限公司桥梁分公司 | Tensioning locking and lossless extending device |
CN104233955B (en) * | 2013-07-04 | 2016-04-06 | 南通大学 | For the spiral friction-type ground tackle of fiber-reinforced composite material rib drag-line |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3534989A (en) * | 1968-05-29 | 1970-10-20 | Joslyn Mfg & Supply Co | End fitting |
DE2512114A1 (en) * | 1975-03-19 | 1976-09-30 | Intercontinentale Technik Gmbh | Composite tension element end anchorage - uses filler of compressed prisms in end-tapered anchor housing |
EP0197912B1 (en) | 1985-03-05 | 1990-04-11 | Vorspann-Technik Gesellschaft m.b.H. | Anchoring device for stressing members |
JPH07189427A (en) * | 1993-12-27 | 1995-07-28 | Tokyo Seiko Co Ltd | Anchorage construction of end of frp reinforcing material |
EP1227200A1 (en) * | 2001-01-29 | 2002-07-31 | VSL International AG | Device for Anchoring one end of a stay to a base |
AT412564B (en) * | 2003-12-22 | 2005-04-25 | Burtscher Stefan L Dipl Ing Dr | Anchoring for pre-tensioned and/or stressed tensile elements comprises a wedge and anchoring body formed by at least two wedge-shaped layers lying over each other |
WO2009042241A1 (en) * | 2007-09-25 | 2009-04-02 | Sorkin Felix L | Apparatus for preventing shrinkage of a sheathing over a tendon |
-
2010
- 2010-03-22 AT AT4532010A patent/AT509076B1/en not_active IP Right Cessation
-
2011
- 2011-03-09 EP EP11450033A patent/EP2372036A1/en not_active Withdrawn
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3534989A (en) * | 1968-05-29 | 1970-10-20 | Joslyn Mfg & Supply Co | End fitting |
DE2512114A1 (en) * | 1975-03-19 | 1976-09-30 | Intercontinentale Technik Gmbh | Composite tension element end anchorage - uses filler of compressed prisms in end-tapered anchor housing |
EP0197912B1 (en) | 1985-03-05 | 1990-04-11 | Vorspann-Technik Gesellschaft m.b.H. | Anchoring device for stressing members |
JPH07189427A (en) * | 1993-12-27 | 1995-07-28 | Tokyo Seiko Co Ltd | Anchorage construction of end of frp reinforcing material |
EP1227200A1 (en) * | 2001-01-29 | 2002-07-31 | VSL International AG | Device for Anchoring one end of a stay to a base |
AT412564B (en) * | 2003-12-22 | 2005-04-25 | Burtscher Stefan L Dipl Ing Dr | Anchoring for pre-tensioned and/or stressed tensile elements comprises a wedge and anchoring body formed by at least two wedge-shaped layers lying over each other |
WO2009042241A1 (en) * | 2007-09-25 | 2009-04-02 | Sorkin Felix L | Apparatus for preventing shrinkage of a sheathing over a tendon |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103343593A (en) * | 2013-07-25 | 2013-10-09 | 长沙理工大学 | Prestressed tendon anchorage device capable of being freely regulated and controlled at high precision |
CN111594242A (en) * | 2020-05-15 | 2020-08-28 | 浙江聚能岩土锚固研究有限公司 | Prestressed expanding shell anchor rod and construction method thereof |
CN113897863A (en) * | 2021-09-06 | 2022-01-07 | 龚鹏鹏 | Combined prestressed anchorage device |
CN113897863B (en) * | 2021-09-06 | 2024-04-30 | 柳州市东桥预应力科技有限公司 | Use method of combined prestress anchorage device |
CN114592512A (en) * | 2022-03-11 | 2022-06-07 | 深圳市工勘岩土集团有限公司 | Anchor structure for reducing size and thickness of anchor backing plate |
Also Published As
Publication number | Publication date |
---|---|
AT509076A4 (en) | 2011-06-15 |
AT509076B1 (en) | 2011-06-15 |
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