WO2015049395A1 - Retaining device - Google Patents
Retaining device Download PDFInfo
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- WO2015049395A1 WO2015049395A1 PCT/ES2013/070684 ES2013070684W WO2015049395A1 WO 2015049395 A1 WO2015049395 A1 WO 2015049395A1 ES 2013070684 W ES2013070684 W ES 2013070684W WO 2015049395 A1 WO2015049395 A1 WO 2015049395A1
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- WO
- WIPO (PCT)
- Prior art keywords
- inner cylinder
- retaining device
- bushing
- retaining
- anchor bolt
- 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.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
-
- 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 present invention relates to an anchor bolt retaining device for ground clamping and slope stabilization. STATE OF THE TECHNIQUE
- a bar is used that is inserted through the mouth of a drill hole in the ground to be held.
- the free space between the introduced bar and the wall of the drill hole is filled by applying a filling material such as synthetic resin, cement grout, mortar, similar concrete, forming the anchor bolt bulb.
- a retaining device is positioned at the outer end of the anchor bolt bar to transmit the tensile stress to which said bar will be subjected on the surface of the ground to be fastened.
- the retaining device comprises a distributor plate having a through hole through which the outer end of the anchor bolt rod is inserted.
- the retaining device is completed with a tensioning nut that is arranged on the anchor bolt bar itself for which a thread is provided.
- the retaining device therefore, allows the movement of the ground to be coerced in response to the tensile stress requested on the pin bar, acting as a passive anchor.
- the retaining device is allowed to impose tractions on the bar itself before the movements occur in order to limit the movements if necessary, acted as an anchor active.
- the retaining device transmits and distributes proportionally the tensile stress, to which the anchor bolt bar is subjected, on the ground contact surface to be stabilized.
- the present invention seeks to solve one or more of the drawbacks set forth above by means of a retaining device of an anchor bolt as defined in the claims.
- One aspect is to provide a retaining device comprising a bushing, which serves as a delivery plate, including an elongated through hole through which the outer end of the bar of an anchor bolt is inserted, and retaining wedges adapted to be inserted in a housing gap that defines a space formed by the bushing itself, the bolt bar through it and the ground surface.
- the retaining device withstands high tensile forces without threaded joints, is simple in its manufacture and installation, and comprises a small number of elements
- the retaining device is easily and securely attachable to the outer end of the anchor bolt bar by the mouth side of a drill hole, supporting high tensile loads; the retaining device being fixed at any point along the anchor bolt bar. Allowing to shorten the bar of the anchor bolt on demand, that is, at any arbitrary point to complete by embedding the retaining device to the anchor bolt.
- the anchor bolt bar is made of a material composed of its excellent mechanical performance, lightness and chemical stability in weather conditions.
- the retaining device works in conjunction with a pin bar anchoring of non-metallic composite material without thread.
- a threaded joint in a non-metallic bolt bar weakens the anchor bolt-retaining device junction in such a way that prevents workloads greater than 10 tons.
- This type of construction of the retaining device is compact, easy to assemble and optimally fixes the fixing of an anchor bolt to the ground, maintaining the expected tensile tension with unlimited solvency, when transmitting the retaining device the force of traction on the material of the anchor bolt bar while simultaneously distributing the stresses is deteriorating the surface of the ground.
- the retaining device of a ground anchor bolt includes a distributor bushing and a set of retaining wedges, formed from a structural plastic material reinforced with staple fibers.
- the bushing bushing comprises, in turn, a hollow inner cylinder and a projecting eave that surrounds the outer contour of one of the ends of the bushing bushing.
- the hollow inner cylinder is open upper and lower, conically opening outwards, having a generatrix equal to or greater than 4 degrees with respect to the vertical axis of the truncated pyramid, preferably 5 degrees.
- the projecting eave is located on the outer face of the inner cylinder at the height of the smaller base of the inner cylinder of the bushing.
- the hollow inner cylinder forms with the anchor bolt rod inserted in the inner cylinder a housing gap adapted to embed the set of retaining wedges to an interlocking position.
- the retaining device is made of a thermoplastic material reinforced with short unidirectional glass fibers of less than 5mm length, preferably 3mm.
- the retaining device is made of a thermoplastic material including at least 15% by weight of staple reinforcement glass fibers, and at most 50% by weight of fibers.
- the anchor bolt comprises an anchor bar whose outer end is insertable through the smaller base of an inner cylinder included in a retaining device
- the anchor bolt bar is made of a thermosetting composite material based on a continuous matrix of fiberglass and resin arranged in the longitudinal direction of the bar.
- Figure 1 shows a perspective of a bushing of a retaining device
- Figure 2 shows an elevation view of a section of the bushing
- Figure 3 shows a perspective of a retaining wedge of the retaining device
- Figure 4 shows a perspective of the retaining device of an anchor bolt in the locking position of the anchor bolt bar
- Figure 5 shows an elevational view of a section of the anchor bolt retaining device in the locked position.
- a retaining device 11 of an anchor bolt comprising a bushing 12 and a set of retaining wedges 15.
- the bushing 12 includes a hollow inner cylinder 13 and a projecting eave 14 that surrounds the outer contour of one of the ends of the bushing 12.
- the projecting eave 14 allows the device retainer 141 transmit the tensile stress to which the anchor bolt is subjected to the ground surface.
- the hollow inner cylinder 13 of the bushing 12 is open upper and lower, and has an inverted truncated pyramid shape. which opens conically outwards, for the housing of the wedge set 15 and the anchor bolt bar.
- the projecting eave 14 is at the same end as the minor base of the truncated pyramid of the inner cylinder 13 of the bushing 12. That is, the bushing 12 has an inverted type T shape with an elongated through hole open conically outwardly.
- the truncated pyramid of the inner cylinder 13 of the bushing 12 has a generatrix equal to or greater than 4 degrees with respect to the vertical axis of the truncated pyramid, preferably 5 degrees.
- the set of retaining wedges 15 comprises at least two retaining wedges that have a shape of the truncated pyramidal circular sector type corresponding to the truncated pyramid of the inner cylinder 13 of the distributor sleeve 12.
- the finished assembly of the retaining device 11 of the anchor bolt is carried out by means of the interlocking of the set of retaining wedges 15 within the housing gap, by means of a pushing force in the direction of the ground and coaxial with the anchor bolt bar .
- the retaining wedges 15 slide on the rod 41 of the bolt, entering into the housing gap until reaching the blocking situation considered in the geotechnical design.
- the fixing or retention capacity of the retaining device 11 is based on the concept of pressure closure by means of wedges.
- the recessing of the wedge set 15 will be carried out by means of an anchoring bar testing device between 20 and 32 mm in diameter. This device allows a controlled, homogeneous and integral interlocking of the wedge set 15 achieving a stable fixation or interlocking of the retaining device 11 on the anchor bolt.
- the tangential resistance is gradually increasing during the interlocking phase until conditions of elastic non-return are reached.
- the interlocking position will also allow the retaining device 11 to achieve a gradual increase in the state of loads up to the working limit of the bar 41 of the anchor bolt without bar-wedge slippage, by generating the introduction of the wedges to pressure at sufficient depth and provide high frictional forces to allow an interlocking in the final position of the retaining wedges 15.
- the rod 41 of the anchor bolt is formed by a thermosetting composite material based on a resin matrix and fiber of the fiberglass, carbon or similar type continuous arranged in the longitudinal direction of the bar, which gives the bar 41 high mechanical performance in tension equivalent to structural steel.
- the retaining device 11 including the distributor bushing 12 and the set of retaining wedges 15, is formed by a structural plastic material reinforced with discontinuous fibers so that the retaining device 11 has high mechanical properties.
- thermoplastic material used as the base material is of the polypropylene (PP), polyamide (PA) type as cheaper plastics. For applications with lower mechanical requirements, recycled thermoplastic material can be used.
- the short staple reinforcement fibers are made of glass.
- the reinforcement of the thermoplastic material includes at least 15% by weight of staple reinforcement fibers, and at most 50% by weight of fibers.
- the discontinuous glass fibers have a length of less than 5mm, preferably 3mm and are unidirectional.
- the different elements of the retaining device 11 are manufactured by injection molding molten thermoplastic material into corresponding molds so that the glass fibers are embedded within the thermoplastic material.
- the retaining device 11 has high mechanical properties.
- the bolt assembly, anchor bar 41 and retaining device 11 are made entirely of non-metallic materials.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
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- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
Description
DISPOSITIVO RETENEDQR RETENEDQR DEVICE
OBJETO OBJECT
[0001] La presente invención se refiere a un dispositivo retenedor de bulones de anclaje para la sujeción de terrenos y estabilización de taludes. ESTADO DE LA TÉCNICA [0001] The present invention relates to an anchor bolt retaining device for ground clamping and slope stabilization. STATE OF THE TECHNIQUE
[0002] Es conocido en el estado de la técnica la utilización de bulones de anclaje para la sujeción y estabilización del terreno. [0002] The use of anchor bolts for securing and stabilizing the ground is known in the state of the art.
[0003] Para conseguir ésta estabilización se utiliza una barra que se introduce a través de la boca de un orificio de perforación practicado en el terreno a sujetar. El espacio libre existente entre la barra introducida y la pared del taladro de perforación es rellenado mediante la aplicación de un material de relleno tal como resina sintética, lechada de cemento, mortero, hormigón similar, conformando el bulbo del bulón de anclaje. [0003] In order to achieve this stabilization, a bar is used that is inserted through the mouth of a drill hole in the ground to be held. The free space between the introduced bar and the wall of the drill hole is filled by applying a filling material such as synthetic resin, cement grout, mortar, similar concrete, forming the anchor bolt bulb.
[0004] Un dispositivo retenedor se posiciona en el extremo exterior de la barra del bulón de anclaje para transmitir el esfuerzo de tracción al que estará sometida dicha barra sobre la superficie del terreno a sujetar. [0004] A retaining device is positioned at the outer end of the anchor bolt bar to transmit the tensile stress to which said bar will be subjected on the surface of the ground to be fastened.
[0005] El dispositivo retenedor comprende una placa repartidora que presenta un taladro pasante a través del cual es insertado el extremo exterior de la barra del bulón de anclaje. El dispositivo retenedor se completa con una tuerca tensora que se dispone sobre la propia barra del bulón de anclaje para la cual se ha previsto una rosca. El dispositivo retenedor, por tanto, permite coaccionar el movimiento del terreno respondiendo al esfuerzo de tracción solicitado sobre la barra del bulón, actuando como un anclaje pasivo. Además, apretando la tuerca roscada en el extremo del bulón contra la placa repartidora, se permite al dispositivo retenedor imponer tracciones a la propia barra antes de que se produzcan los movimientos con objeto de limitar los movimientos en caso que fuera necesario, actuado como un anclaje activo. [0005] The retaining device comprises a distributor plate having a through hole through which the outer end of the anchor bolt rod is inserted. The retaining device is completed with a tensioning nut that is arranged on the anchor bolt bar itself for which a thread is provided. The retaining device, therefore, allows the movement of the ground to be coerced in response to the tensile stress requested on the pin bar, acting as a passive anchor. In addition, by tightening the threaded nut at the end of the bolt against the distributor plate, the retaining device is allowed to impose tractions on the bar itself before the movements occur in order to limit the movements if necessary, acted as an anchor active.
[0006] Por lo tanto, el dispositivo retenedor transmite y distribuye proporcionalmente el esfuerzo de tracción, al que es sometida la barra del bulón de anclaje, sobre la superficie de contacto del terreno a estabilizar. [0006] Therefore, the retaining device transmits and distributes proportionally the tensile stress, to which the anchor bolt bar is subjected, on the ground contact surface to be stabilized.
[0007] El uso de barras roscadas supone un problema adicional sobre el proceso de fabricación del bulón de anclaje, influyendo sobre las prestaciones mecánicas del propio bulón. Primero porque se encarece el proceso de fabricación y segundo porque se pierde sección resistente en la propia barra. [0007] The use of threaded bars poses an additional problem with the process of manufacturing the anchor bolt, influencing the mechanical performance of the bolt itself. First because the manufacturing process becomes more expensive and secondly because a resistant section is lost in the bar itself.
[0008] Otra alternativa es practicar el mecanizado sólo en el extremo de aplicación del bulón de anclaje. Esta solución incorpora el problema añadido de prever las longitudes de barra de antemano y, por tanto, romper la continuidad del proceso de producción. [0008] Another alternative is to practice machining only at the application end of the anchor bolt. This solution incorporates the added problem of anticipating bar lengths in advance and, therefore, breaking the continuity of the production process.
SUMARIO SUMMARY
[0009] La presente invención busca resolver uno o más de los inconvenientes expuestos anteriormente mediante un dispositivo retenedor de un bulón de anclaje como es definido en las reivindicaciones. [0009] The present invention seeks to solve one or more of the drawbacks set forth above by means of a retaining device of an anchor bolt as defined in the claims.
[0010] Un aspecto es suministrar un dispositivo retenedor que comprende un casquillo repartidor, que sirve a la vez como placa de reparto, incluyendo un taladro alargado pasante a través del cual es insertable el extremo exterior de la barra de un bulón de anclaje, y cuñas retenedoras adaptadas para ser insertables en un intersticio de alojamiento que define un espacio conformado por el propio casquillo, la barra del bulón pasante a su través y la superficie del terreno. [0010] One aspect is to provide a retaining device comprising a bushing, which serves as a delivery plate, including an elongated through hole through which the outer end of the bar of an anchor bolt is inserted, and retaining wedges adapted to be inserted in a housing gap that defines a space formed by the bushing itself, the bolt bar through it and the ground surface.
[0011] El dispositivo retenedor soporta fuerzas de tracción elevadas sin uniones roscadas, es sencillo en su fabricación y en su instalación, y comprende un número reducido de elementos [0011] The retaining device withstands high tensile forces without threaded joints, is simple in its manufacture and installation, and comprises a small number of elements
[0012] El dispositivo retenedor es acoplable de forma sencilla y segura al extremo exterior de la barra del bulón de anclaje por el lado de la boca de un orificio de perforación, soportando cargas de tracción elevadas; siendo el dispositivo retenedor fijable en cualquier punto a lo largo de la barra del bulón de anclaje. Permitiendo acortar la barra del bulón de anclaje a demanda, es decir, en cualquier punto arbitrario para completar por empotramiento el dispositivo retenedor al bulón de anclaje. [0012] The retaining device is easily and securely attachable to the outer end of the anchor bolt bar by the mouth side of a drill hole, supporting high tensile loads; the retaining device being fixed at any point along the anchor bolt bar. Allowing to shorten the bar of the anchor bolt on demand, that is, at any arbitrary point to complete by embedding the retaining device to the anchor bolt.
[0013] La barra del bulón de anclaje es realizada en un material compuesto por sus excelentes prestaciones mecánicas, de ligereza y estabilidad química en condiciones de intemperie. [0013] The anchor bolt bar is made of a material composed of its excellent mechanical performance, lightness and chemical stability in weather conditions.
[0014] El dispositivo retenedor trabaja en conjunción con una barra de bulón de anclaje de material compuesto no metálico sin rosca. Una unión roscada en una barra de bulón no metálica debilita la unión bulón de anclaje-dispositivo retenedor de tal manera que impide garantizar cargas de trabajo superiores a 10 toneladas. [0015] Este tipo de construcción del dispositivo retenedor es compacto, fácil de montar y soluciona de una manera óptima la fijación de un bulón de anclaje al terreno, manteniendo con solvencia ilimitada la tensión de tracción prevista, al transmitir el dispositivo retenedor la fuerza de tracción sobre el material de la barra del bulón de anclaje distribuyendo simultáneamente los esfuerzos son deteriorar la superficie del terreno. [0014] The retaining device works in conjunction with a pin bar anchoring of non-metallic composite material without thread. A threaded joint in a non-metallic bolt bar weakens the anchor bolt-retaining device junction in such a way that prevents workloads greater than 10 tons. [0015] This type of construction of the retaining device is compact, easy to assemble and optimally fixes the fixing of an anchor bolt to the ground, maintaining the expected tensile tension with unlimited solvency, when transmitting the retaining device the force of traction on the material of the anchor bolt bar while simultaneously distributing the stresses is deteriorating the surface of the ground.
[0016] El dispositivo retenedor de un bulón de anclaje de terreno, incluye un casquillo repartidor y un juego de cuñas retenedoras, formado a partir de un material plástico estructural reforzado con fibras discontinuas. [0016] The retaining device of a ground anchor bolt includes a distributor bushing and a set of retaining wedges, formed from a structural plastic material reinforced with staple fibers.
[0017] El casquillo repartidor comprende, a su vez, un cilindro interior hueco y un alero saliente que rodea el contorno exterior de uno de los extremos del casquillo repartidor. El cilindro interior hueco está abierto superior e inferiormente, abriéndose cónicamente hacia fuera, teniendo una generatriz igual o superior de 4 grados respecto del eje vertical del troncopiramidal, preferentemente, de 5 grados. [0018] El alero saliente se encuentra localizado sobre la cara exterior del cilindro interior a la altura de la base menor del cilindro interior del casquillo repartidor. [0017] The bushing bushing comprises, in turn, a hollow inner cylinder and a projecting eave that surrounds the outer contour of one of the ends of the bushing bushing. The hollow inner cylinder is open upper and lower, conically opening outwards, having a generatrix equal to or greater than 4 degrees with respect to the vertical axis of the truncated pyramid, preferably 5 degrees. [0018] The projecting eave is located on the outer face of the inner cylinder at the height of the smaller base of the inner cylinder of the bushing.
[0019] El cilindro interior hueco forma con la barra del bulón de anclaje insertada en el cilindro interior un intersticio de alojamiento adaptado para empotrar el juego de cuñas retenedoras hasta una posición de enclavamiento. [0019] The hollow inner cylinder forms with the anchor bolt rod inserted in the inner cylinder a housing gap adapted to embed the set of retaining wedges to an interlocking position.
[0020] El dispositivo retenedor está realizado en un material termoplástico reforzado con fibras de vidrio unidireccionales cortas discontinuas de longitud inferior a 5mm, preferentemente, de 3mm. El dispositivo retenedor está realizado en un material termoplástico incluyendo como mínimo un 15% en peso de fibras de vidrio discontinuas de refuerzo, y como máximo un 50% en peso de fibras. [0020] The retaining device is made of a thermoplastic material reinforced with short unidirectional glass fibers of less than 5mm length, preferably 3mm. The retaining device is made of a thermoplastic material including at least 15% by weight of staple reinforcement glass fibers, and at most 50% by weight of fibers.
[0021] El bulón de anclaje comprende una barra de anclaje cuyo extremo exterior es insertable a través de la base menor de un cilindro interior incluido en un dispositivo retenedor. [0021] The anchor bolt comprises an anchor bar whose outer end is insertable through the smaller base of an inner cylinder included in a retaining device
[0022] La barra de bulón de anclaje está realizada con un material compuesto termoestable a base de una matriz de resina y fibra de vidrio continua dispuesta en la dirección longitudinal de la barra. BREVE DESCRIPCIÓN DE LAS FIGURAS [0022] The anchor bolt bar is made of a thermosetting composite material based on a continuous matrix of fiberglass and resin arranged in the longitudinal direction of the bar. BRIEF DESCRIPTION OF THE FIGURES
[0023] Una explicación más detallada del dispositivo de acuerdo con realizaciones de la invención se da en la siguiente descripción basada en las figuras adjuntas en las que: [0023] A more detailed explanation of the device according to embodiments of the invention is given in the following description based on the attached figures in which:
[0024] la figura 1 muestra una perspectiva de un casquillo repartidor de un dispositivo retenedor, [0024] Figure 1 shows a perspective of a bushing of a retaining device,
[0025] la figura 2 muestra una vista en alzado una sección del casquillo repartidor, [0025] Figure 2 shows an elevation view of a section of the bushing,
[0026] la figura 3 muestra una perspectiva de una cuña retenedora del dispositivo retenedor, [0027] la figura 4 muestra una perspectiva del dispositivo retenedor de un bulón de anclaje en posición de enclavamiento de la barra del bulón de anclaje, y [0026] Figure 3 shows a perspective of a retaining wedge of the retaining device, [0027] Figure 4 shows a perspective of the retaining device of an anchor bolt in the locking position of the anchor bolt bar, and
[0028] la figura 5 muestra una vista en alzado una sección del dispositivo retenedor del bulón de anclaje en posición de enclavamiento. [0028] Figure 5 shows an elevational view of a section of the anchor bolt retaining device in the locked position.
DESCRIPCIÓN DE UN MODO DE REALIZACIÓN [0029] En relación con las figuras 4 y 5, se ilustra un dispositivo retenedor 11 de un bulón de anclaje; que comprende un casquillo repartidor 12 y un juego de cuñas retenedoras 15. DESCRIPTION OF AN EMBODIMENT [0029] In relation to Figures 4 and 5, a retaining device 11 of an anchor bolt is illustrated; comprising a bushing 12 and a set of retaining wedges 15.
[0030] En relación ahora con las figuras 1 y 2, el casquillo repartidor 12 incluye un cilindro interior 13 hueco y un alero saliente 14 que rodea el contorno exterior de uno de los extremos del casquillo repartidor 12. El alero saliente 14 permite al dispositivo retenedor 141 transmitir a la superficie del terreno el esfuerzo de tracción al que está sometido el bulón de anclaje. [0030] In relation to Figures 1 and 2 now, the bushing 12 includes a hollow inner cylinder 13 and a projecting eave 14 that surrounds the outer contour of one of the ends of the bushing 12. The projecting eave 14 allows the device retainer 141 transmit the tensile stress to which the anchor bolt is subjected to the ground surface.
[0031] El cilindro interior 13 hueco del casquillo repartidor 12 está abierto superior e inferiormente, y presenta una forma del tipo troncopiramidal invertida que se abre cónicamente hacia afuera, para el alojamiento del juego de cuñas 15 y la barra del bulón de anclaje. El alero saliente 14 se encuentra en el mismo extremo que la base menor del troncopiramidal del cilindro interior 13 del casquillo repartidor 12. Es decir, el casquillo repartidor 12 presenta una forma del tipo T invertida con un taladro alargado pasante abierto cónicamente hacia afuera. [0031] The hollow inner cylinder 13 of the bushing 12 is open upper and lower, and has an inverted truncated pyramid shape. which opens conically outwards, for the housing of the wedge set 15 and the anchor bolt bar. The projecting eave 14 is at the same end as the minor base of the truncated pyramid of the inner cylinder 13 of the bushing 12. That is, the bushing 12 has an inverted type T shape with an elongated through hole open conically outwardly.
[0032] El troncopiramidal del cilindro interior 13 del casquillo repartidor 12 tiene una generatriz igual o superior de 4 grados respecto del eje vertical del troncopiramidal, preferentemente, de 5 grados. [0033] En relación ahora con las figuras 3, 4 y 5, el juego de cuñas retenedoras 15 comprende al menos dos cuñas retenedoras que presentan una forma del tipo sector circular cilindrico troncopiramidal correspondiente al troncopiramidal del cilindro interior 13 del casquillo repartidor 12. [0032] The truncated pyramid of the inner cylinder 13 of the bushing 12 has a generatrix equal to or greater than 4 degrees with respect to the vertical axis of the truncated pyramid, preferably 5 degrees. [0033] In relation now to Figures 3, 4 and 5, the set of retaining wedges 15 comprises at least two retaining wedges that have a shape of the truncated pyramidal circular sector type corresponding to the truncated pyramid of the inner cylinder 13 of the distributor sleeve 12.
[0034] Una vez que el extremo exterior de la barra 41 del bulón de anclaje es insertada a través de la base menor del troncocónico del cilindro interior 13 del casquillo 12 y el alero saliente 14 apoya contra la superficie exterior del paramento del terreno, quedando disponible un intersticio de alojamiento en el que es insertable el juego de cuñas retenedoras 15. [0034] Once the outer end of the bar 41 of the anchor bolt is inserted through the smaller base of the conical trunk of the inner cylinder 13 of the bushing 12 and the projecting eave 14 rests against the outer surface of the ground face, remaining available an accommodation gap in which the set of retaining wedges 15 is inserted.
[0035] El montaje acabado del dispositivo retenedor 11 del bulón de anclaje se realiza por medio del enclavamiento del juego de cuñas retenedoras 15 dentro del intersticio de alojamiento, mediante una fuerza de empuje en dirección al terreno y coaxial con la barra del bulón de anclaje. Las cuñas retenedoras 15 se deslizan sobre la barra 41 del bulón introduciéndose dentro del intersticio de alojamiento hasta alcanzar la situación de bloqueo considerada en el diseño geotécnico. La capacidad de fijación o retención del dispositivo retenedor 11 se basa en el concepto de cierre por presión mediante cuñas. [0035] The finished assembly of the retaining device 11 of the anchor bolt is carried out by means of the interlocking of the set of retaining wedges 15 within the housing gap, by means of a pushing force in the direction of the ground and coaxial with the anchor bolt bar . The retaining wedges 15 slide on the rod 41 of the bolt, entering into the housing gap until reaching the blocking situation considered in the geotechnical design. The fixing or retention capacity of the retaining device 11 is based on the concept of pressure closure by means of wedges.
[0036] El empotramiento del juego de cuñas 15 se realizará mediante un dispositivo de tesado de barras de anclaje de entre 20 y 32 mm de diámetro. Este dispositivo permite un enclavamiento controlado, homogéneo y solidario del juego de cuñas 15 lográndose una fijación o enclavamiento estable del dispositivo retenedor 11 sobre el bulón de anclaje. [0036] The recessing of the wedge set 15 will be carried out by means of an anchoring bar testing device between 20 and 32 mm in diameter. This device allows a controlled, homogeneous and integral interlocking of the wedge set 15 achieving a stable fixation or interlocking of the retaining device 11 on the anchor bolt.
[0037] La movilización de la resistencia tangencial en la interfaz barra-cuña se realiza gracias a la fricción entre ambas superficies y la fuerza normal que la cuña efectúa sobre la barra 41. [0037] The mobilization of the tangential resistance in the bar-wedge interface is carried out thanks to the friction between both surfaces and the normal force that the wedge made on bar 41.
[0038] La resistencia tangencial va creciendo paulatinamente durante la fase de enclavamiento hasta alcanzar unas condiciones de no retorno elástico. La posición de enclavamiento además va a permitir al dispositivo retenedor 11 conseguir un aumento gradual del estado de cargas hasta el límite de trabajo de la barra 41 del bulón de anclaje sin que se produzca deslizamiento barra-cuña, al generar la introducción de las cuñas a presión a la profundidad suficiente y aportar fuerzas de rozamiento elevadas para permitir así un enclavamiento en la posición final de las cuñas retenedoras 15. [0039] La barra 41 del bulón de anclaje está formada por un material compuesto termoestable a base de una matriz de resina y fibra del tipo fibra de vidrio, carbono o similar continua dispuesta en la dirección longitudinal de la barra, que confiere a la barra 41 unas altas prestaciones mecánicas en tracción equivalentes al acero estructural. [0040] Para distribuir uniformemente las fuerzas de tracción generadas, es importante además el tipo de material con el cual es fabricado el dispositivo retenedor 11. Por ello, y con objeto de responder a las prestaciones estructurales mencionadas el dispositivo retenedor 11 se ha diseñado a partir de materiales suficientemente resistentes. [0041] El dispositivo retenedor 11, incluyendo el casquillo repartidor 12 y el juego de cuñas retenedoras 15, está formado por un material plástico estructural reforzado con fibras discontinuas para que el dispositivo retenedor 11 presente unas elevadas propiedades mecánicas. [0038] The tangential resistance is gradually increasing during the interlocking phase until conditions of elastic non-return are reached. The interlocking position will also allow the retaining device 11 to achieve a gradual increase in the state of loads up to the working limit of the bar 41 of the anchor bolt without bar-wedge slippage, by generating the introduction of the wedges to pressure at sufficient depth and provide high frictional forces to allow an interlocking in the final position of the retaining wedges 15. [0039] The rod 41 of the anchor bolt is formed by a thermosetting composite material based on a resin matrix and fiber of the fiberglass, carbon or similar type continuous arranged in the longitudinal direction of the bar, which gives the bar 41 high mechanical performance in tension equivalent to structural steel. [0040] To evenly distribute the tensile forces generated, it is also important the type of material with which the retaining device 11 is manufactured. Therefore, and in order to respond to the structural benefits mentioned, the retaining device 11 has been designed to from sufficiently resistant materials. [0041] The retaining device 11, including the distributor bushing 12 and the set of retaining wedges 15, is formed by a structural plastic material reinforced with discontinuous fibers so that the retaining device 11 has high mechanical properties.
[0042] El material termoplástico utilizado como material base es del tipo polipropileno (PP), poliamida (PA) como plásticos más económicos. Para aplicaciones de menor exigencia mecánica se puede utilizar material termoplástico reciclado. [0042] The thermoplastic material used as the base material is of the polypropylene (PP), polyamide (PA) type as cheaper plastics. For applications with lower mechanical requirements, recycled thermoplastic material can be used.
[0043] Las fibras cortas discontinuas de refuerzo son de vidrio. El refuerzo del material termoplástico incluye como mínimo un 15% en peso de fibras discontinuas de refuerzo, y como máximo un 50% en peso de fibras. Las fibras discontinuas de vidrio tienen una longitud inferior a 5mm, preferentemente, de 3mm y son unidireccionales. [0044] Los diferentes elementos del dispositivo retenedor 11 son fabricados mediante moldeo por inyección de material termoplástico fundido en moldes correspondientes de manera que las fibras de vidrio están embebidas dentro del material termoplástico. El dispositivo retenedor 11 presenta unas elevadas propiedades mecánicas. [0043] The short staple reinforcement fibers are made of glass. The reinforcement of the thermoplastic material includes at least 15% by weight of staple reinforcement fibers, and at most 50% by weight of fibers. The discontinuous glass fibers have a length of less than 5mm, preferably 3mm and are unidirectional. [0044] The different elements of the retaining device 11 are manufactured by injection molding molten thermoplastic material into corresponding molds so that the glass fibers are embedded within the thermoplastic material. The retaining device 11 has high mechanical properties.
[0045] Por lo tanto, el conjunto del bulón, barra 41 de anclaje y dispositivo retenedor 11 están fabricados íntegramente por materiales no metálicos. [0045] Therefore, the bolt assembly, anchor bar 41 and retaining device 11 are made entirely of non-metallic materials.
[0046] Diseño geométrico, materiales y proceso de fabricación permiten hacer compatible estados de cargas en el bulón de anclaje superiores a 10 toneladas con una alta estabilidad química a la intemperie y a precios competitivos de mercado. [0046] Geometric design, materials and manufacturing process make it possible to make compatible states of loads in the anchor bolt exceeding 10 tons with high chemical stability in the open and at competitive market prices.
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/ES2013/070684 WO2015049395A1 (en) | 2013-10-03 | 2013-10-03 | Retaining device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/ES2013/070684 WO2015049395A1 (en) | 2013-10-03 | 2013-10-03 | Retaining device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2015049395A1 true WO2015049395A1 (en) | 2015-04-09 |
Family
ID=52778291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/ES2013/070684 Ceased WO2015049395A1 (en) | 2013-10-03 | 2013-10-03 | Retaining device |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2015049395A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020002111A1 (en) * | 2018-06-25 | 2020-01-02 | Carbo-Link Ag | Anchor sleeve and anchor system |
| IT202300003774A1 (en) * | 2023-03-02 | 2024-09-02 | Sireg Geotech S R L | TIE ROD HEAD |
| EP4520869A1 (en) * | 2023-09-06 | 2025-03-12 | Marti AG Bern | Anchor head system |
| RU236208U1 (en) * | 2025-05-21 | 2025-07-31 | Акционерное общество "Обнинское научно-производственное предприятие "Технология" им. А.Г.Ромашина" | A fixing device made of composite material for positioning and fixing a fixture on the surface of a mold shell of a tool |
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|---|---|---|---|---|
| EP0232944A2 (en) * | 1986-02-14 | 1987-08-19 | Akzo N.V. | A device for anchoring a tendon and a process for preparing prestressed concrete |
| US4837995A (en) * | 1987-05-13 | 1989-06-13 | Mitsubishi Mining And Cement Co., Ltd. | Anchoring device for a tension member of prestressed concrete |
| US5713169A (en) * | 1994-04-25 | 1998-02-03 | Eidgenossische Materialprufungsund Forschungsanstalt EMPA | Anchorage device for high-performance fiber composite cables |
| JPH11315700A (en) * | 1998-05-01 | 1999-11-16 | Shimizu Corp | Fixing structure of tension material for anchor |
| US20060179742A1 (en) * | 2005-02-14 | 2006-08-17 | Precision Surelock, Inc. | Anchor for concrete post-tension anchoring |
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2013
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0232944A2 (en) * | 1986-02-14 | 1987-08-19 | Akzo N.V. | A device for anchoring a tendon and a process for preparing prestressed concrete |
| US4837995A (en) * | 1987-05-13 | 1989-06-13 | Mitsubishi Mining And Cement Co., Ltd. | Anchoring device for a tension member of prestressed concrete |
| US5713169A (en) * | 1994-04-25 | 1998-02-03 | Eidgenossische Materialprufungsund Forschungsanstalt EMPA | Anchorage device for high-performance fiber composite cables |
| JPH11315700A (en) * | 1998-05-01 | 1999-11-16 | Shimizu Corp | Fixing structure of tension material for anchor |
| US20060179742A1 (en) * | 2005-02-14 | 2006-08-17 | Precision Surelock, Inc. | Anchor for concrete post-tension anchoring |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020002111A1 (en) * | 2018-06-25 | 2020-01-02 | Carbo-Link Ag | Anchor sleeve and anchor system |
| CN112469873A (en) * | 2018-06-25 | 2021-03-09 | 碳连接股份公司 | Anchor sleeve and anchor system |
| US11761208B2 (en) | 2018-06-25 | 2023-09-19 | Carbo-Link Ag | Anchor sleeve and anchor system |
| IT202300003774A1 (en) * | 2023-03-02 | 2024-09-02 | Sireg Geotech S R L | TIE ROD HEAD |
| EP4520869A1 (en) * | 2023-09-06 | 2025-03-12 | Marti AG Bern | Anchor head system |
| RU236208U1 (en) * | 2025-05-21 | 2025-07-31 | Акционерное общество "Обнинское научно-производственное предприятие "Технология" им. А.Г.Ромашина" | A fixing device made of composite material for positioning and fixing a fixture on the surface of a mold shell of a tool |
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