EP2886745B1 - Élément de tension d'espacement pour fournir un coffrage pour les murs en béton étanches - Google Patents

Élément de tension d'espacement pour fournir un coffrage pour les murs en béton étanches Download PDF

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Publication number
EP2886745B1
EP2886745B1 EP13198212.6A EP13198212A EP2886745B1 EP 2886745 B1 EP2886745 B1 EP 2886745B1 EP 13198212 A EP13198212 A EP 13198212A EP 2886745 B1 EP2886745 B1 EP 2886745B1
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EP
European Patent Office
Prior art keywords
bushes
tension member
formwork
facing
spacing tension
Prior art date
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Active
Application number
EP13198212.6A
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German (de)
English (en)
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EP2886745A1 (fr
Inventor
Guido Faresin
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.)
Faresin Building SpA
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Faresin Building SpA
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Publication date
Application filed by Faresin Building SpA filed Critical Faresin Building SpA
Priority to EP13198212.6A priority Critical patent/EP2886745B1/fr
Priority to ES13198212.6T priority patent/ES2631052T3/es
Publication of EP2886745A1 publication Critical patent/EP2886745A1/fr
Application granted granted Critical
Publication of EP2886745B1 publication Critical patent/EP2886745B1/fr
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    • 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
    • E04G17/00Connecting or other auxiliary members for forms, falsework structures, or shutterings
    • E04G17/06Tying means; Spacers ; Devices for extracting or inserting wall ties
    • E04G17/065Tying means, the tensional elements of which are threaded to enable their fastening or tensioning
    • E04G17/0655Tying means, the tensional elements of which are threaded to enable their fastening or tensioning the element consisting of several parts
    • E04G17/0658Tying means, the tensional elements of which are threaded to enable their fastening or tensioning the element consisting of several parts remaining completely or partially embedded in the cast material

Definitions

  • the present invention relates to a spacing tension member for providing formwork for providing watertight concrete walls.
  • US 2 292 548 A discloses a form tie used for holding together forms used in concrete work, consisting of two or more parallel rods 1, maintained in spaced apart relationship by means of helices 2 and 3, each located at one end of the rods and secured between the same by being welded, and each consisting of a spirally formed length of rod constituting a thread for the reception of the threaded end 4 of a lag screw 5 extending through a longitudinally extending brace 6 between the vertical supports 7 and through holes in the form boards 8.
  • each cone 11 having a tapered bore 12 and a square opening 13 at the large end thereof into which an end of a tool is fitted after the lag screw has been removed to enable the cone to be rotated in the hardened wall to loosen it and remove it from the wall.
  • the smaller end of the cone 11 abuts against the end of the helix 3 that is provided with a flat surface bearing surface 15
  • US 1 665 649 A discloses a spreader tie 15 for a concrete wall form 10, comprising a brace member 16 of twisted flat material 17 between ear ends 18 bent at right angles through which the inner ends of a pair of rods 19 extend, the rods extending through beams 13 and boards 14 of the wall form 10, and through horizontal cross beams 20 supported by the rods, the ends 21,22 of which are screw threaded into corrugated cone members abutting against the inner faces of the form sections and the ears 18.
  • Square nuts 24 also co-act with the screw threads 21 and are prevented from rotation by the flat face of the brace member 16.
  • the aim of the present invention is to provide a spacing tension member for providing formwork for watertight concrete walls, which is capable of overcoming the limitations and drawbacks of the above-mentioned known art.
  • an important object of the invention is to provide a spacing tension member that enables the construction of concrete basins, circular and otherwise, by using formworks of the conventional type, which are thus cheaper and faster to use than special formworks, and in such conventional formworks the pressure of the casting is opposed by such spacing tension members according to the invention.
  • Another object of the invention is to provide a spacing tension member that makes it possible to provide walls that are capable of ensuring a seal that is tight, reliable and constant over time, as required for the above-mentioned applications in plants for the containment of aggressive fluids that could invalidate the functionality of systems for sealing through holes.
  • an object of the invention is to provide a spacing tension member that makes it possible to provide a concrete wall with no through holes that allow leaks of liquids or gases.
  • Another object of the invention is to provide a spacing tension member that can be installed and handled with ease.
  • Another object of the invention is to provide a spacing tension member that can be made using conventional systems and technologies.
  • a spacing tension member for providing formwork for watertight concrete walls, as defined in for watertight concrete walls,
  • a spacing tension member for providing formwork 11 for watertight concrete walls 12 is generally designated with the reference numeral 10.
  • Such spacing tension member 10 comprises two opposite traction bars 13 and 14, operating in a substantially coaxial configuration, as in Figure 1 , each one passing through a corresponding panel 15 and 16 of a formwork wall.
  • Each traction bar 13 and 14 protrudes outside the corresponding panel 15 or 16, for screwing to a tightening plate 17 and 18.
  • each traction bar 13 and 14 is adapted to be screwed to a spacer body 20 that is adapted to be embedded and concealed in the concrete casting 21.
  • Such spacer body 20 in the embodiment of the invention described herein which is understood to be non-limiting, comprises two opposite bushes 22 and 23 which are internally threaded for screwing to the ends 24 and 25, inside the space 19 between the panels 15 and 16, of the traction bars 13 and 14.
  • the two bushes 22 and 23 are mutually rigidly coupled by two lateral spacers 26 and 36, which are arranged outside the space 30 between the two facing bushes 22 and 23.
  • such two lateral spacers 26 and 36 are each constituted by a portion of a metallic bar, such as a building yard steel rod, and are welded to the two bushes 22 and 23 in diametrically opposite positions.
  • Such spacers can also be different in number, for example one or more than two, and can also be constituted by a metallic plate or by other similar and equivalent components.
  • each traction bar 13 and 14 between the panel 15 and 16 and the corresponding facing screw coupling bush 22 and 23, when it is mounted, is protected from the concrete casting 21 by means of an annular plug 31 and 32 which can be removed when the casting has hardened.
  • Each annular plug 31 and 32 is frustum-shaped to facilitate its extraction.
  • the bushes 22 and 23 are each constituted by a hexagonal nut.
  • each hexagonal nut is blind, for closure by way of a plug 39 and 40, or by welding, or by other means.
  • the spacer body 20 taken as a whole defines a hollow-structure interconnection between the two traction bars 13 and 14, which thanks to the lateral spacers 26 and 36 allows the concrete casting to penetrate between the bushes 22 and 23 and thus between the ends of the traction bars 13 and 14, which through the spacers transmit the tractive force to which they are subjected in the manner of a single bar.
  • Such spacer body 20 by remaining embedded in the concrete casting, ensures that the holes 42 and 43, which remained free for the removal of the traction bars 13 and 14 and of the respective caps 31 and 32, are not mutually in communication, thus closing off all routes to a possible penetration of liquids and/or gases.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)

Claims (3)

  1. Elément de tension d'espacement (10) pour fournir un coffrage (11) pour les murs en béton étanches (12), le coffrage (11) comprenant deux panneaux en vis-à-vis (15, 16), l'élément de tension d'espacement, lorsqu'il est assemblé au coffrage (11), comprenant deux barres de traction opposées (13, 14), chacune passant par le panneau (15, 16) correspondant du coffrage (11), à chacune desdites barres de traction, étant couplée par vissage, à l'extérieur des panneaux (15, 16), une plaque d'étanchéité (17, 18) et dans l'espace (19) entre les deux panneaux en vis-à-vis (15, 16), un corps de dispositif d'espacement (20) qui est adapté pour rester encastré et dissimulé à l'intérieur de la coulée de béton (21) des parois en béton étanches (12),
    ledit corps de dispositif d'espacement (20) comprenant deux douilles opposées (22, 23) pour se visser aux extrémités (24, 25), à l'intérieur dudit espace (19), desdites barres de traction (13, 14), lesdites deux douilles (22, 23) étant couplées de manière mutuellement rigide par le au moins un dispositif d'espacement lateral (26), qui est agencé à l'extérieur de l'espace (30) entre les deux douilles en vis-à-vis (22, 23), la partie libre (27, 28) de chaque barre de traction (13, 14) entre le panneau (15, 16) et la douille de couplage de vis en vis-à-vis (22, 23) correspondante étant protégée de la coulée de béton (21) au moyen d'un bouchon annulaire (31, 32), qui peut être retiré lorsque la coulée a durci, caractérisé en ce que lesdites douilles (22, 23) sont chacune constituées par un écrou hexagonal avec un trou fileté (34, 35) qui est fermé sur le côté faisant face à l'espace (30) entre les deux douilles en vis-à-vis (22, 23) au moyen d'un bouchon (39, 40) ou par soudage ou par d'autres moyens.
  2. Elément de tension d'espacement selon la revendication 1, caractérisé en ce que lesdites deux douilles (22, 23) sont couplées de manière mutuellement rigide par deux dispositifs d'espacement latéraux (26, 36), chacun constitué par une partie d'une barre métallique, telle qu'une barre en acier de chantier, qui sont soudés aux deux douilles (22, 23) dans des positions diamétralement opposées.
  3. Elément de tension d'espacement selon la revendication 1, caractérisé en ce que lesdites deux douilles (22, 23) sont couplées de manière mutuellement rigide par un seul ou plus de deux dispositifs d'espacement, tels que par exemple des tiges métalliques ou des plaques métalliques ou d'autres composants similaires et équivalents.
EP13198212.6A 2013-12-18 2013-12-18 Élément de tension d'espacement pour fournir un coffrage pour les murs en béton étanches Active EP2886745B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP13198212.6A EP2886745B1 (fr) 2013-12-18 2013-12-18 Élément de tension d'espacement pour fournir un coffrage pour les murs en béton étanches
ES13198212.6T ES2631052T3 (es) 2013-12-18 2013-12-18 Tirante espaciador para proveer encofrados, particularmente para paredes de hormigón estancas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13198212.6A EP2886745B1 (fr) 2013-12-18 2013-12-18 Élément de tension d'espacement pour fournir un coffrage pour les murs en béton étanches

Publications (2)

Publication Number Publication Date
EP2886745A1 EP2886745A1 (fr) 2015-06-24
EP2886745B1 true EP2886745B1 (fr) 2016-11-16

Family

ID=50101671

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13198212.6A Active EP2886745B1 (fr) 2013-12-18 2013-12-18 Élément de tension d'espacement pour fournir un coffrage pour les murs en béton étanches

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EP (1) EP2886745B1 (fr)
ES (1) ES2631052T3 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10787827B2 (en) * 2016-11-14 2020-09-29 Airlite Plastics Co. Concrete form with removable sidewall
WO2018137728A1 (fr) * 2017-01-27 2018-08-02 Meva Schalungs-Systeme Gmbh Système d'étanchéité d'un passage d'une tige d'ancrage à travers un élément de coffrage cadre
CN109184203A (zh) * 2018-10-15 2019-01-11 中建四局第三建筑工程有限公司 一种穿过钢筋骨架的快速安装对拉螺杆
CN112081376A (zh) * 2020-07-31 2020-12-15 何其佳 一种防渗水螺母及对拉螺杆组件

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1665649A (en) * 1927-02-19 1928-04-10 Charles T Whitescarver Spreader tie for concrete-wall forms
US2114590A (en) * 1937-06-01 1938-04-19 Samuel S Colt Reenforcement supporting means for concrete forms
US2292548A (en) * 1941-03-14 1942-08-11 Richmond Screw Anchor Co Inc Form tie
DE20214936U1 (de) * 2002-09-26 2002-12-19 Mathies Gmbh Vorrichtung zur gegenüberliegenden Anordnung beabstandeter Schalwände

Also Published As

Publication number Publication date
ES2631052T3 (es) 2017-08-25
EP2886745A1 (fr) 2015-06-24

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