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ES2275397A1 - Joint for cable anchorage for post or tightened structures has hollow truncated cone having top for limiting maximum advance of male truncated cone and approach of sectors of male truncated cone towards each other - Google Patents

Joint for cable anchorage for post or tightened structures has hollow truncated cone having top for limiting maximum advance of male truncated cone and approach of sectors of male truncated cone towards each other Download PDF

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Publication number
ES2275397A1
ES2275397A1 ES200500691A ES200500691A ES2275397A1 ES 2275397 A1 ES2275397 A1 ES 2275397A1 ES 200500691 A ES200500691 A ES 200500691A ES 200500691 A ES200500691 A ES 200500691A ES 2275397 A1 ES2275397 A1 ES 2275397A1
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Spain
Prior art keywords
truncated cone
cable
male
sectors
post
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.)
Granted
Application number
ES200500691A
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Spanish (es)
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ES2275397B1 (en
Inventor
Jose Manuel Peña Pascual
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TECN DEL PRETENSADO Y SERVICIO
TECNICAS DEL PRETENSADO Y SERVICIOS AUXILIARES SL
Original Assignee
TECN DEL PRETENSADO Y SERVICIO
TECNICAS DEL PRETENSADO Y SERVICIOS AUXILIARES SL
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Priority to ES200500691A priority Critical patent/ES2275397B1/en
Publication of ES2275397A1 publication Critical patent/ES2275397A1/en
Application granted granted Critical
Publication of ES2275397B1 publication Critical patent/ES2275397B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • 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
    • E04C5/122Anchoring devices the tensile members are anchored by wedge-action

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)
  • Piles And Underground Anchors (AREA)

Abstract

An anchorage block includes an orifice passage section comprised of a hollow truncated cone and at least one inner hollow male truncated cone with inner teeth presenting various sectors with intermediate reliefs. The hollow truncated cone is lodged in a specific section of the anchorage block to be crossed by a cable, and has a top that limits the maximum advance of the male truncated cone and the approach towards each other of the various sectors of the male truncated cone. The top may have the staggered form of a circular crown.

Description

Conjunto de anclaje de cables para estructuras postesadas a atirantadas.Cable anchor set for structures posts to cable ties.

Campo de la invenciónField of the Invention

La presente invención se refiere a un conjunto de anclaje de cables, de los empleados en estructuras postesadas o atirantadas dentro del sector de la construcción.The present invention relates to a set for anchoring cables, for employees in post-tensioned structures or trapped within the construction sector.

Estado de la técnica anteriorPrior art

Se conocen anclajes que se emplean en estructuras postesadas o atirantadas (por ejemplo, en el interior de puentes de hormigón) en los que el cable de postesado utilizado es sujetado mediante cuñas o piezas macho de dos o tres sectores.Anchors are known that are used in post-tensioned or cable-stayed structures (for example, inside of concrete bridges) in which the post-tensioning cable used is held by wedges or male parts of two or three sectors.

El cable queda sujeto mediante el efecto de acodalamiento entre el cono hembra del bloque de anclaje y el cono macho de la cuña o pieza macho, así como mediante el efecto de mordedura que realizan al cable los dientes situados en la superficie interior de la cuña o pieza macho (véanse las figuras 1 y 2).The cable is held by the effect of kinking between the female cone of the anchor block and the wedge male cone or male piece, as well as by the effect of bite that make the teeth located in the cable inner surface of the wedge or male part (see figures 1 and 2).

Los cables de postesado pueden presentar diámetros sustancialmente diferentes. En estos casos, se utilizarían diferentes configuraciones de bloques hembra y cuñas o piezas macho para cada tipo de cable.Post-tensioning cables may present substantially different diameters. In these cases, it would use different configurations of female blocks and wedges or   Male parts for each type of cable.

Cuando las cuñas soportan esfuerzos elevados de carga de rotura de cable, se produce el acodalamiento máximo entre el cono hembra del anclaje y el cono macho de la cuña, teniendo como resultado el efecto máximo de mordedura del cable por los dientes interiores de la cuña hasta que el cable puede romper por pérdida de sección.When wedges withstand high efforts of cable breaking load, maximum bending occurs between the female anchor cone and the wedge male cone, resulting in the maximum cable bite effect by the inner teeth of the wedge until the cable can break by loss of section.

Este sistema presenta el inconveniente de tener la incertidumbre de no saber cuándo se producirá la rotura del cable por efecto de mordedura. Cuando los cables son de diámetros no muy diferentes se utiliza el mismo sistema de anclaje para ellos, lo que puede agravar dicho inconveniente.This system has the disadvantage of having the uncertainty of not knowing when the breakage of the cable by bite effect. When the cables are diameters not very different the same anchoring system is used for them, which can aggravate this inconvenience.

Sumario de la invenciónSummary of the invention

El objeto de la presente invención es proporcionar un conjunto de anclaje que resuelva el problema de una excesiva mordedura de los dientes sobre el cable cuando éste está sometido a esfuerzos elevados.The object of the present invention is provide an anchor set that solves the problem of a excessive bite of the teeth on the cable when it is under high stress.

La invención se refiere a un conjunto de anclaje de cables, que comprende un bloque de anclaje con al menos un orificio pasante, comprendiendo dicho al menos un orificio pasante un tramo hueco troncocónico y otro tramo hueco, y al menos una pieza macho troncocónica interiormente hueca y con dientes interiores que presenta varios sectores con holguras intermedias, destinada a alojarse en el correspondiente tramo hueco troncocónico del bloque de anclaje y susceptible de ser atravesada por un cable, en el que al menos un tramo hueco troncocónico del bloque de anclaje comprende un tope que limita el avance máximo de la pieza macho troncocónica dentro del correspondiente tramo hueco troncocónico y, por tanto, la aproximación entre sí de los sectores de la pieza macho.The invention relates to an anchor assembly of cables, comprising an anchor block with at least one through hole, said at least one through hole comprising a truncated conical hollow section and another hollow section, and at least one internally hollow and teeth truncated conical male piece interiors that presents several sectors with intermediate clearances, destined to stay in the corresponding truncated conical hollow section of the anchor block and capable of being traversed by a cable, in which at least one truncated conical hollow section of the block of anchor includes a stop that limits the maximum advance of the piece conical male inside the corresponding hollow section conical trunk and, therefore, the approximation of the sectors to each other of the male piece.

Mediante el tope situado en el tramo hueco troncocónico se delimita claramente la posición final de la pieza macho troncocónica cuando el cable está sometido a esfuerzos elevados y, por consiguiente, se limita la mordedura de los dientes sobre dicho cable.By the stop located in the hollow section Conical trunk clearly defines the final position of the piece conical male when the cable is under stress elevated and, consequently, teeth bite is limited over said cable.

Otras realizaciones ventajosas de la invención se exponen en las reivindicaciones dependientes.Other advantageous embodiments of the invention they are set forth in the dependent claims.

Breve descripción de los dibujosBrief description of the drawings

A continuación se describirá una realización ilustrativa, y en ningún sentido limitativa, del objeto de la presente invención, haciendo referencia a los dibujos que se acompañan, en los cuales:An embodiment will be described below. illustrative, and in no sense limiting, of the purpose of the present invention, referring to the drawings that are accompany, in which:

La figura 1 muestra una vista en sección de un bloque de anclaje para un cable o cordón de acuerdo con la técnica anterior.Figure 1 shows a sectional view of a anchor block for a cable or cord according to the technique previous.

La figura 2 muestra una representación de un conjunto de anclaje de cable de acuerdo con la técnica anterior, que emplea el bloque de anclaje de la figura 1.Figure 2 shows a representation of a cable anchor assembly according to the prior art, which uses the anchor block of figure 1.

La figura 3 muestra una vista en sección de un bloque de anclaje para un cable o cordón de acuerdo con la invención.Figure 3 shows a sectional view of a anchor block for a cable or cord according to the invention.

La figura 4 muestra una representación de un conjunto de anclaje de cable de acuerdo con la invención, que emplea el bloque de anclaje de la figura 3.Figure 4 shows a representation of a cable anchor assembly according to the invention, which use the anchor block of figure 3.

La figura 5 muestra un detalle de la figura 4.Figure 5 shows a detail of the figure Four.

La figura 6 muestra una representación de un anclaje múltiple según la invención.Figure 6 shows a representation of a multiple anchor according to the invention.

Descripción detallada de la invenciónDetailed description of the invention

Como se indicó al exponer el estado de la técnica, los conjuntos 1 de anclaje empleados normalmente, y que se representan en las figuras 1 y 2, comprenden un bloque 2 de anclaje, con un orificio pasante 3 que tiene un tramo hueco 4 troncocónico practicado en su interior, y una pieza macho 5 con forma habitual de tronco de cono, que aloja el cable 7 en su interior. La pieza macho 5 suele presentar varios sectores 5A, 5B (generalmente dos o tres).As indicated by exposing the state of the technique, the anchor sets 1 normally used, and that they are represented in figures 1 and 2, they comprise a block 2 of anchor, with a through hole 3 that has a hollow section 4 truncated conical inside, and a male piece 5 with usual form of cone trunk, which houses the cable 7 in its inside. The male part 5 usually has several sectors 5A, 5B (usually two or three).

Las figuras 3-6 representan el conjunto 1 de anclaje de la presente invención. Como se observa en ellas, el bloque 2 de anclaje presenta asimismo un tramo hueco 4 troncocónico en el cual puede insertarse la pieza macho 5 troncocónica, que consta de varios sectores (en la figura 4 dichos sectores se representan como 5A y 5B). El cable 7 recorre el interior de la pieza macho 5 troncocónica. En la parte interna de dicha pieza macho 5 hay una serie de dientes (no mostrados) cuya función es realizar un efecto de mordedura sobre el cable 7 cuando hay esfuerzos elevados sobre la pieza macho 5. En el conjunto de la figura, al bajar la pieza macho 5 dentro del tramo hueco 4 troncocónico los sectores 5A, 5B de la pieza macho 5 se aproximan (al disminuir la holgura 6 existente entre ellos) y ello produce el efecto de mordedura de los dientes en el cable 7. Cuanto más baje la pieza macho 5, mayor será la aproximación de los sectores 5A, 5B entre sí y mayor será el contacto de los dientes con el cable 7, aumentando así el efecto de mordedura.Figures 3-6 represent the anchor assembly 1 of the present invention. As seen in they, the anchor block 2 also has a hollow section 4 conical trunk in which the male part 5 can be inserted conical trunk, consisting of several sectors (in figure 4 said sectors are represented as 5A and 5B). Cable 7 runs through the inside of the male part 5 conical trunk. In the internal part of said male part 5 there is a series of teeth (not shown) whose function is to perform a bite effect on cable 7 when there are high forces on the male part 5. In the whole of the figure, when lowering the male part 5 inside the hollow section 4 Conical trunk sectors 5A, 5B of male part 5 approach (by decreasing the clearance 6 between them) and this produces the teeth bite effect on cable 7. The lower the male part 5, the greater the approximation of the sectors 5A, 5B each other and greater will be the contact of the teeth with the cable 7, thus increasing the bite effect.

En las figuras 3-6 se observa la existencia de un tope 8 que limita el avance máximo de la pieza macho 5 dentro del bloque 2 de anclaje. En la realización concreta mostrada en las figuras, dicho tope 8 está constituido sobre la pared del tramo hueco 4 troncocónico del bloque, y tiene una forma de escalonamiento en corona circular. La figura 5 muestra en detalle el contacto entre la superficie inferior de la pieza macho 5 y el tope 8, que impide a la primera cualquier avance adicional a su posición de avance máximo.Figures 3-6 show the existence of a stop 8 that limits the maximum advance of the piece male 5 inside the anchor block 2. In the concrete realization shown in the figures, said stop 8 is constituted on the wall of the hollow section 4 conical block, and has a shape of circular crown staggering. Figure 5 shows in detail the contact between the bottom surface of the male part 5 and the stop 8, which prevents the first any additional advance to Your maximum forward position.

La figura 6 muestra un anclaje múltiple, en el que sobre el mismo bloque 2 de anclaje se han practicado varios huecos 4 troncocónicos hembra en los que se insertan las correspondientes piezas macho 5, destinadas a alojar sendos cables 7 en su interior.Figure 6 shows a multiple anchor, in the that on the same anchor block 2 several have been practiced 4 female frustoconical holes in which the corresponding male parts 5, intended to accommodate two cables 7 inside.

A partir de la presente invención es posible realizar diseños de longitud de piezas macho 5 y número de dientes capaces de garantizar que la carga de rotura del sistema se encuentre dentro de normativa para la posición última de dichas piezas macho 5, al permitir una aproximación limitada de los sectores 5A, 5B entre sí y, por tanto, de los dientes al cable 7.From the present invention it is possible make designs of length of male parts 5 and number of teeth able to ensure that the system breaking load is find within regulations for the last position of said male parts 5, by allowing a limited approximation of the sectors 5A, 5B with each other and, therefore, from the teeth to the cable 7.

Aunque dicho tope 8 también podría colocarse sobre el elemento de pieza macho 5, resulta más conveniente realizarlo en el tramo hueco 4 troncocónico interior del bloque. En el ejemplo de las figuras, únicamente habría que realizar un mecanizado en el bloque 2 de anclaje, para dejar una superficie de tope 8 en forma de corona circular y un tramo hueco 9 inferior, si se desea, cilíndrico, de diámetro suficiente para el paso del cable 7.Although said stop 8 could also be placed on the male part element 5, it is more convenient make it in the hollow section 4 conical interior of the block. In the example of the figures, only one would have to perform machined in the anchor block 2, to leave a surface of stop 8 in the form of a circular crown and a hollow section 9 lower, if desired, cylindrical, of sufficient diameter for the cable passage 7.

Aunque se ha descrito y representado una realización del invento, es evidente que pueden introducirse en ella modificaciones comprendidas dentro del alcance del mismo, no debiendo considerarse limitado éste a dicha realización, sino únicamente al contenido de las reivindicaciones siguientes.Although it has been described and represented a embodiment of the invention, it is evident that they can be introduced into her modifications within the scope of the same, no this should be considered limited to said realization, but only to the content of the following claims.

Claims (3)

1. Conjunto (1) de anclaje de cables para estructuras postesadas o atirantadas, que comprende:1. Cable anchor set (1) for post-tensioned or cable-stayed structures, comprising: un bloque (2) de anclaje con al menos un orificio pasante (3), comprendiendo dicho al menos un orificio pasante (3) un tramo hueco troncocónico (4) y otro tramo hueco, yan anchor block (2) with at least one through hole (3), said at least one hole comprising through (3) a truncated conical hollow section (4) and another hollow section, Y al menos una pieza macho troncocónica (5) interiormente hueca y con dientes interiores que presenta varios sectores (5A, 5B) con holguras intermedias (6), destinada a alojarse en el correspondiente tramo hueco troncocónico (4) del bloque (2) de anclaje y susceptible de ser atravesada por un cable (7),at least one conical male part (5) internally hollow and with inner teeth that presents several sectors (5A, 5B) with intermediate clearances (6), intended for staying in the corresponding truncated conical hollow section (4) of the anchor block (2) and capable of being crossed by a cable (7), caracterizado porque al menos un tramo hueco troncocónico (4) del bloque (2) de anclaje comprende un tope (8) que limita el avance máximo de la pieza macho troncocónica (5) dentro del correspondiente tramo hueco troncocónico (4) y, por tanto, la aproximación entre sí de los sectores (5A, 5B) de la pieza macho (5). characterized in that at least one truncated conical hollow section (4) of the anchor block (2) comprises a stop (8) that limits the maximum advance of the truncated conical male part (5) within the corresponding truncated conical hollow section (4) and therefore , the approximation of the sectors (5A, 5B) of the male part (5). 2. Conjunto (1) de anclaje de cables para estructuras postesadas o atirantadas según la reivindicación 1, caracterizado porque el tope (8) tiene forma escalonada de corona circular.2. Cable anchor assembly (1) for post-tensioned or cable-stayed structures according to claim 1, characterized in that the stop (8) has a circular crown stepped shape. 3. Conjunto (1) de anclaje de cables para estructuras postesadas o atirantadas según cualquiera de las reivindicaciones anteriores, caracterizado porque el al menos un orificio pasante (3) del bloque (2) de anclaje comprende un tramo hueco (9) cilíndrico conectado al hueco troncocónico (4), permitiendo ambos el paso del cable (7).3. Cable anchor assembly (1) for post-tensioned or cable-stayed structures according to any of the preceding claims, characterized in that the at least one through hole (3) of the anchor block (2) comprises a hollow cylindrical section (9) connected to the Trunk conical hollow (4), allowing both the passage of the cable (7).
ES200500691A 2005-03-23 2005-03-23 CABLE ANCHORAGE ASSEMBLY FOR POSTED OR ATTACHED STRUCTURES. Expired - Fee Related ES2275397B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES200500691A ES2275397B1 (en) 2005-03-23 2005-03-23 CABLE ANCHORAGE ASSEMBLY FOR POSTED OR ATTACHED STRUCTURES.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES200500691A ES2275397B1 (en) 2005-03-23 2005-03-23 CABLE ANCHORAGE ASSEMBLY FOR POSTED OR ATTACHED STRUCTURES.

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ES2275397A1 true ES2275397A1 (en) 2007-06-01
ES2275397B1 ES2275397B1 (en) 2008-04-16

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2166457A (en) * 1938-07-28 1939-07-18 Electroline Company Reclaiming member and entrance guide for connectors
US3524228A (en) * 1968-07-09 1970-08-18 William F Kelly Anchor for post-tensioning prestressed concrete
US3596330A (en) * 1964-10-13 1971-08-03 Cementation Co Ltd The Anchors for structural tensile members
US3766609A (en) * 1969-03-26 1973-10-23 A Brandestini Anchoring body for key anchoring tension members
ES8404457A1 (en) * 1983-05-10 1984-04-16 Shinko Wire Co Ltd Wire anchor for concrete
US4799307A (en) * 1986-05-30 1989-01-24 Tech Research, Inc. Anchor apparatus for a tendon in prestressed concrete slab
US20020108329A1 (en) * 2001-01-29 2002-08-15 Vsl International Ag Device for anchoring one end of a stay to a base

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2166457A (en) * 1938-07-28 1939-07-18 Electroline Company Reclaiming member and entrance guide for connectors
US3596330A (en) * 1964-10-13 1971-08-03 Cementation Co Ltd The Anchors for structural tensile members
US3524228A (en) * 1968-07-09 1970-08-18 William F Kelly Anchor for post-tensioning prestressed concrete
US3766609A (en) * 1969-03-26 1973-10-23 A Brandestini Anchoring body for key anchoring tension members
ES8404457A1 (en) * 1983-05-10 1984-04-16 Shinko Wire Co Ltd Wire anchor for concrete
US4799307A (en) * 1986-05-30 1989-01-24 Tech Research, Inc. Anchor apparatus for a tendon in prestressed concrete slab
US20020108329A1 (en) * 2001-01-29 2002-08-15 Vsl International Ag Device for anchoring one end of a stay to a base

Also Published As

Publication number Publication date
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