FR2664940A1 - Device for fixing tubular rungs - Google Patents
Device for fixing tubular rungs Download PDFInfo
- Publication number
- FR2664940A1 FR2664940A1 FR9009412A FR9009412A FR2664940A1 FR 2664940 A1 FR2664940 A1 FR 2664940A1 FR 9009412 A FR9009412 A FR 9009412A FR 9009412 A FR9009412 A FR 9009412A FR 2664940 A1 FR2664940 A1 FR 2664940A1
- Authority
- FR
- France
- Prior art keywords
- branch
- handle
- tubular element
- reinforcement
- anchoring device
- 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- Withdrawn
Links
- 238000004873 anchoring Methods 0.000 claims description 21
- 230000002787 reinforcement Effects 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 3
- 238000005266 casting Methods 0.000 abstract 1
- 230000009194 climbing Effects 0.000 abstract 1
- 230000003014 reinforcing effect Effects 0.000 abstract 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C9/00—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes
- E06C9/02—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes rigidly mounted
- E06C9/04—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes rigidly mounted in the form of climbing irons or the like
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
Description
L'invention a trait à un dispositif d'ancrage d'échelons tubulaires mis en place avant le coulage des anneaux en béton destinés à la réalisation de puits, de regards et analogues. The invention relates to a device for anchoring tubular rungs put in place before pouring the concrete rings intended for the production of wells, manholes and the like.
On connaît déjà, par le document FR-A-2.440.461, un dispositif permettant d'ancrer, dans un ouvrage en béton, des échelons tubulaires constitués d'un élément tubulaire métallique revêtu d'un revêtement non corrodant ou d'un élément tubulaire d'aluminium. Cet élément tubulaire a sensiblement la forme d'un "U" dont les deux branches parallèles sont enfoncées dans ledit ouvrage en béton. Ce dispositif d'ancrage est formé d'une douille sensiblement cylindrique en matière plastique solidairement assujettie, lors de la fabrication en usine de l'échelon tubulaire, à l'extrémité de chaque branche de l'élément tubulaire. A cet effet, ladite douille présente un alésage servant de logement à l'extrémité de la branche de l'élément tubulaire.Pour assurer l'ancrage, la douille comporte sur une grande partie de son corps une pluralité de nervures annulaires disposées parallèlement sur le pourtour extérieur du corps. Ces nervures annulaires comportent une forme de crocs. Document FR-A-2,440,461 already discloses a device for anchoring, in a concrete structure, tubular rungs made up of a metallic tubular element coated with a non-corroding coating or of an element tubular aluminum. This tubular element has substantially the shape of a "U", the two parallel branches of which are driven into said concrete structure. This anchoring device is formed of a substantially cylindrical plastic socket solidly secured, during the factory manufacture of the tubular rung, at the end of each branch of the tubular element. For this purpose, said socket has a bore serving as a housing at the end of the branch of the tubular element. To ensure anchoring, the socket comprises over a large part of its body a plurality of annular ribs arranged parallel on the outer periphery of the body. These annular ribs have a shape of fangs.
Pour faciliter l'introduction des douilles soit dans un perçage pratiqué préalablement dans l'ouvrage en béton dur, soit directement dans l'ouvrage en béton mou, ces douilles comportent une extrémité effilée en forme de cône.To facilitate the introduction of the sockets either in a hole made previously in the hard concrete structure, or directly in the soft concrete structure, these sockets have a tapered end in the shape of a cone.
Ainsi, le but de l'extrémité effilée en forme de cône est limité à une facilité de pénétration des douilles dans l'ouvrage en béton mais la présence du cône n'augmente pas le coefficient d'ancrage puisque ladite extrémité, effilée en forme de cône, est dépourvue de nervures annulaires, seuls moyens assurant l'ancrage.Thus, the purpose of the tapered cone-shaped end is limited to an ease of penetration of the sockets into the concrete structure, but the presence of the cone does not increase the anchoring coefficient since said tapered end of cone, is devoid of annular ribs, the only means ensuring anchoring.
Toutefois, il s'est avéré que l'allongement de la douille par l'extrémité effilée en forme de cône présentait plusieurs inconvénients, notamment lors de la fabrication d'anneaux en béton. En effet, fréquemment, pour des problèmes de coût de fabrication ou de transport, on confère auxdits anneaux une paroi dont l'épaisseur est réduite le plus possible. Ainsi, il arrivait que la pointe de l'extrémité effilée en forme de cône soit, était à fleur avec la face externe de l'anneau en béton soit, était légèrement en retrait et, de ce fait, ledit anneau présentait aux emplacements des douilles une certaine fragilité nuisible. However, it has been found that the elongation of the sleeve by the tapered end in the form of a cone has several drawbacks, in particular during the manufacture of concrete rings. Indeed, frequently, for problems of manufacturing or transport cost, said rings are given a wall whose thickness is reduced as much as possible. Thus, it happened that the tip of the tapered tapered end either was flush with the outer face of the concrete ring or was slightly recessed and, therefore, said ring presented at the locations of the sockets some harmful fragility.
Par ailleurs, il s'est avéré plus rentable de mettre en place l'échelon tubulaire avant le coulage de l'anneau en béton. Cependant, au cours du coulage du béton, on risquait de provoquer l'écrasement de l'extrémité effilée en forme de cône des douilles. In addition, it has proven to be more profitable to install the tubular rung before the concrete ring is poured. However, during the pouring of the concrete, there was a risk of causing the cone-shaped tapered end of the bushes to be crushed.
La présente invention a pour but de remédier à ces inconvénients. The present invention aims to remedy these drawbacks.
A cet effet, l'invention concerne un dispositif d'ancrage d'échelon tubulaire mis en place avant le coulage des anneaux en béton destinés à la réalisation de puits, de regards et analogues, caractérisé en ce qu'il comporte un manche pourvu d'une partie crantée prolongeant chacune des deux branches parallèles de l'élément tubulaire en forme de "U" et présentant un renfort perpendiculaire à l'axe longitudinal de la branche correspondante. To this end, the invention relates to a tubular rung anchoring device installed before pouring the concrete rings intended for the production of wells, manholes and the like, characterized in that it comprises a handle provided with 'a notched part extending each of the two parallel branches of the tubular element in the shape of "U" and having a reinforcement perpendicular to the longitudinal axis of the corresponding branch.
Les avantages obtenus grâce à cette invention consistent essentiellement en ce qu aux emplacements des ancrages de l'échelon tubulaire, on confère aux anneaux en béton une certaine épaisseur de béton entre le chant des manches et la face externe des anneaux en béton, ce qui permet de consolider ces derniers auxdits emplacements, tout en maintenant la qualité d'ancrage des moyens connus. De plus, le renfort annihile tout écrasement du manche lors du coulage du béton, notamment lorsque l'emmanchement des branches de l'élément tubulaire se fait postérieurement à la réalisation de l'anneau, donc postérieurement au coulage du béton. The advantages obtained thanks to this invention consist essentially in that at the locations of the anchorages of the tubular rung, the concrete rings are given a certain thickness of concrete between the edge of the sleeves and the external face of the concrete rings, which allows to consolidate the latter at said locations, while maintaining the anchoring quality of the known means. In addition, the reinforcement annihilates any crushing of the handle during the pouring of the concrete, in particular when the fitting of the branches of the tubular element takes place after the production of the ring, therefore after the pouring of the concrete.
L'invention sera bien comprise en se référant à la description suivante faite à titre d'exemple non limitatif et au dessin ci-annexé dans lequel
la figure 1 est une vue partielle en plan et en coupe d'un anneau en béton dans lequel est ancré un échelon tubulaire à l'aide du dispositif d'ancrage conforme à l'invention
la figure 2 est une vue agrandie du dispositif d'ancrage disposé à l'extrémité d'une des branches de l'élément tubulaire.The invention will be better understood by referring to the following description given by way of nonlimiting example and to the attached drawing in which
Figure 1 is a partial plan view in section of a concrete ring in which is anchored a tubular rung using the anchoring device according to the invention
Figure 2 is an enlarged view of the anchoring device disposed at the end of one of the branches of the tubular element.
On se réfère aux deux figures. We refer to the two figures.
L'échelon tubulaire 1 comporte un élément tubulaire 2 ayant la forme approximative d'un "U" composé de deux branches parallèles 3, 4 dont une des extrémités 5, 6 sont reliées entre-elles par une traverse 7 servant de repose-pied. Les extrémités libres 8, 9 de ces branches parallèles 3, 4 sont ancrées dans un anneau en béton 10. The tubular rung 1 comprises a tubular element 2 having the approximate shape of a "U" composed of two parallel branches 3, 4 of which one of the ends 5, 6 are interconnected by a cross member 7 serving as a footrest. The free ends 8, 9 of these parallel branches 3, 4 are anchored in a concrete ring 10.
Selon l'invention, ces extrémités libres 8, 9 des branches parallèles 3, 4 sont mises en place avant le coulage de l'anneau en béton 10 et leur ancrage est assuré par un manche 11. Ce manche 11 présente une partie crantée 12 en forme de crocs dans laquelle se répand le béton lors du coulage. En durcissant, la liaison entre le béton durci et la partie crantée 12 annihile tout risque d'arrachement des échelons tubulaires 1. Ledit manche 11 comporte un renfort 13 situé au-delà de la partie crantée 12 par rapport à la branche 3, 4. Ce renfort 13 est disposé perpendiculairement à l'axe longitudinal 14 de la branche 3, 4. According to the invention, these free ends 8, 9 of the parallel branches 3, 4 are put in place before pouring the concrete ring 10 and their anchoring is ensured by a handle 11. This handle 11 has a notched part 12 in form of fangs in which the concrete spreads during pouring. By hardening, the connection between the hardened concrete and the notched part 12 annihilates any risk of tearing of the tubular rungs 1. Said sleeve 11 includes a reinforcement 13 situated beyond the notched part 12 relative to the branch 3, 4. This reinforcement 13 is arranged perpendicular to the longitudinal axis 14 of the branch 3, 4.
Après coulage de l'anneau en béton 10, l'anneau en béton 10 présente une épaisseur de béton 15 entre le chant 16 du renfort 13 du manche 11 et la face externe 17 de l'anneau en béton 10. De ce fait, grâce à cette épaisseur de béton 15, on consolide la solidité de l'anneau en béton 10 aux emplacements d'ancrage 18, 19 tout en maintenant la qualité d'ancrage. After pouring the concrete ring 10, the concrete ring 10 has a thickness of concrete 15 between the edge 16 of the reinforcement 13 of the handle 11 and the outer face 17 of the concrete ring 10. Therefore, thanks at this thickness of concrete 15, the solidity of the concrete ring 10 is consolidated at the anchoring locations 18, 19 while maintaining the anchoring quality.
Selon un premier mode de réalisation, le manche 1 1 fait partie intégrante de la branche 3, 4 de l'élément tubulaire 2. Avantageusement, ledit manche 11 est constitué du même matériau que l'élément tubulaire 2. According to a first embodiment, the handle 11 is an integral part of the branch 3, 4 of the tubular element 2. Advantageously, said handle 11 is made of the same material as the tubular element 2.
Selon un autre mode de réalisation, le manche 1 1 est une pièce rapportée et est réalisé en matière plastique. Dans ce cas, le manche 11 comporte un alésage borgne 20 servant de logement à l'extrémité libre 8, 9 de la branche 3, 4 de l'élément tubulaire 2. Le fond 22 de cet alésage borgne 20, situé dans le renfort 13, sert de butée au chant 23 de l'extrémité libre 8, 9 de la branche 3, 4. According to another embodiment, the handle 1 1 is an insert and is made of plastic. In this case, the handle 11 has a blind bore 20 serving as a housing at the free end 8, 9 of the branch 3, 4 of the tubular element 2. The bottom 22 of this blind bore 20, located in the reinforcement 13 , serves as a stop at the edge 23 of the free end 8, 9 of the branch 3, 4.
Avantageusement, le manche 1 1 comporte une section circulaire dont le diamètre extérieur 24 est supérieur au diamètre extérieur 25 de la branche 3, 4. Advantageously, the handle 11 has a circular section whose outside diameter 24 is greater than the outside diameter 25 of the branch 3, 4.
Toutefois, du fait que les manches 1 1 sont mis en place avant le-coulage du béton, on n'est plus tributaire d'une section circulaire et on peut conférer aux manches 1 1 une section polygonale. Dans ce cas, le diamètre du cercle inscrit est supérieur au diamètre extérieur 25 de la branche 3, 4 pour que le manche 11 conserve une épaisseur de paroi 26 suffisamment résistante à toute détérioration lors de l'intromission de l'extrémité libre 8, 9 de la branche 3, 4 de l'échelon tubulaire 2. However, the fact that the sleeves 1 1 are put in place before pouring the concrete, it is no longer dependent on a circular section and can be given to the sleeves 1 1 a polygonal section. In this case, the diameter of the inscribed circle is greater than the outside diameter 25 of the branch 3, 4 so that the handle 11 retains a wall thickness 26 sufficiently resistant to any deterioration during the intromission of the free end 8, 9 of branch 3, 4 of tubular rung 2.
Bien que l'invention ait été décrite à propos d'une forme de réalisation particulière, il est bien entendu qu'elle n'y est nullement limitée et qu'on peut y apporter diverses modifications de formes, de matériaux et de combinaisons de ces divers éléments, sans pour cela s'éloigner du cadre et de l'esprit de l'invention. Although the invention has been described in connection with a particular embodiment, it is understood that it is in no way limited thereto and that it is possible to make various modifications to the forms, materials and combinations of these. various elements, without departing from the scope and spirit of the invention.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9009412A FR2664940A1 (en) | 1990-07-19 | 1990-07-19 | Device for fixing tubular rungs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9009412A FR2664940A1 (en) | 1990-07-19 | 1990-07-19 | Device for fixing tubular rungs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2664940A1 true FR2664940A1 (en) | 1992-01-24 |
Family
ID=9399025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR9009412A Withdrawn FR2664940A1 (en) | 1990-07-19 | 1990-07-19 | Device for fixing tubular rungs |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2664940A1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1095493A (en) * | 1953-12-07 | 1955-06-03 | Advanced sealing tab | |
| GB2115868A (en) * | 1981-08-19 | 1983-09-14 | Rainer Clover | Expanding-anchor step iron |
| EP0223725A1 (en) * | 1985-10-23 | 1987-05-27 | M.S.U. MATERIEL DE SECURITE URBAIN Société à responsibilité limitée dite: | Anchor step iron and fastening method |
-
1990
- 1990-07-19 FR FR9009412A patent/FR2664940A1/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1095493A (en) * | 1953-12-07 | 1955-06-03 | Advanced sealing tab | |
| GB2115868A (en) * | 1981-08-19 | 1983-09-14 | Rainer Clover | Expanding-anchor step iron |
| EP0223725A1 (en) * | 1985-10-23 | 1987-05-27 | M.S.U. MATERIEL DE SECURITE URBAIN Société à responsibilité limitée dite: | Anchor step iron and fastening method |
Non-Patent Citations (1)
| Title |
|---|
| BETONWERK + FERTIGTEIL-TECHNIK, vol. 48, no. 4, avril 1982, pages A68-A69, Wiesbaden, DE; "MSU-Steigb}gel. Sicherheits-Besteigungselemente f}r den Hoch- und Tiefbau" * |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| CJ | Change in legal form | ||
| ST | Notification of lapse | ||
| ST | Notification of lapse | ||
| ST | Notification of lapse |