EP1849930A1 - Support arm for a modular scaffolding system as well as modular scaffolding with such an arm - Google Patents

Support arm for a modular scaffolding system as well as modular scaffolding with such an arm Download PDF

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Publication number
EP1849930A1
EP1849930A1 EP06290678A EP06290678A EP1849930A1 EP 1849930 A1 EP1849930 A1 EP 1849930A1 EP 06290678 A EP06290678 A EP 06290678A EP 06290678 A EP06290678 A EP 06290678A EP 1849930 A1 EP1849930 A1 EP 1849930A1
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EP
European Patent Office
Prior art keywords
support arm
support
shaped portions
arm according
arms
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
EP06290678A
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German (de)
French (fr)
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EP1849930B1 (en
Inventor
Hans Hofstetter
Beat Joss
Fritz Fankhauser
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Soletanche Freyssinet SA
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Freyssinet SAS
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Priority to EP06290678.9A priority Critical patent/EP1849930B1/en
Publication of EP1849930A1 publication Critical patent/EP1849930A1/en
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Publication of EP1849930B1 publication Critical patent/EP1849930B1/en
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G25/00—Shores or struts; Chocks
    • E04G25/02—Shores or struts; Chocks non-telescopic
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G1/00—Scaffolds primarily resting on the ground
    • E04G1/02—Scaffolds primarily resting on the ground composed essentially of members elongated in one dimension only, e.g. poles, lattice masts, with or without end portions of special form, connected together by any means
    • E04G1/12—Scaffolds primarily resting on the ground composed essentially of members elongated in one dimension only, e.g. poles, lattice masts, with or without end portions of special form, connected together by any means comprising members of special, e.g. composite, cross-section or with lugs or the like or lateral apertures for supporting or attaching other members
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
    • E04G11/48—Supporting structures for shutterings or frames for floors or roofs

Definitions

  • the invention relates to support arms for modular scaffolding system and modular scaffolding systems comprising such support arms.
  • the support arms and thus the modular scaffolds can support low or medium loads and these modular scaffolds are generally constructed from steel elements that are fixed to each other temporarily.
  • These known modular scaffolds are adapted to particular circumstances of a building site or land and can therefore be used only once.
  • the beams or sleepers used to build these known modular scaffolds must be individually adjusted according to their respective length, which has a major drawback.
  • their transport requires conveying means of relatively large sizes which also significantly affect the cost of transport of these modular scaffolds.
  • the known modular scaffolding systems which consist of beams or sleepers can only withstand low or medium loads, which implies that these steel constructions are subject to sometimes high loads that can irreparably damage their connection joints especially when the modular scaffolding system must support wide-span ties.
  • the present invention therefore proposes to solve the disadvantages mentioned above.
  • the subject of the invention is a support arm for a modular scaffolding system used in structure structures, characterized in that it extends between a lower end and an upper end which are interconnected. by an elongate body having a section formed by at least three portions, and preferably four U-shaped portions which have two lateral branches which are each integral with the side branch of the adjacent U-shaped portion.
  • FIGS. 1 to 5 all show support arms 1 which extend between an upper end 2 and a lower end 3 which are interconnected by an elongated metal body 4.
  • the support arms can for example vary in length from 9 centimeters, 27 centimeters, 45 centimeters, 90 centimeters, 180 centimeters and 270 centimeters for the largest.
  • each elongate body 4 comprises four U-shaped portions 5 which have two lateral branches integral and substantially equal and preferably perpendicular to the side branches of the U-shaped portions 5 which are directly adjacent.
  • the junction between two lateral branches of two U-shaped portions 5 substantially forms a rounded corner so as to enhance the strength of the support arm as a whole.
  • each support arm 1 is formed by substantially rectangular metal plates in the center of which are formed openings 6. These openings 6 open directly into the cavity formed by the four U-shaped portions 5 constituting the elongate body 4.
  • Each plate has at its outer contour a plurality of orifices, for example 8 in number, intended to receive fasteners for fixing at least one other support arm 1 for modulating said modular scaffolding system.
  • each support arm 1 comprises a metal beam 30 which extends between the U-shaped portions 5 and between the upper and lower 2 plates of the support arm.
  • pins or reinforcement members 31, 4 in number, can connect the elongated beam to the rounded corners of the U-shaped portions so as to increase the strength of the support arm, particularly with respect to buckling forces.
  • the elongated beam 30 in the support arm 1 is also particular. Indeed, as can be seen in Figure 8, the elongate beam 30 has a substantially square section whose sides are arranged with respect to the rounded corners of the side branches of the U-shaped portions 5 and whose corners are arranged opposite mid-branches of the U-shaped portions.
  • each support arm 1 may also comprise fastening means 7 for fastening handling members or other members as will be seen below.
  • the support arms 1 shown in Figures 1 to 5 and as they are formed by their elongate body which have a section formed by four U-shaped portions are capable of supporting axial loads up to 2000kN.
  • FIGS. 7 and 8 show in more detail the fastening means 7 that can be directly attached to the elongated body 4 of the support arm 1, and FIG. 8 again shows the section formed by four U-shaped portions 5, the two branches of which lateral are integral and substantially perpendicular to the side branches of the U-shaped portions directly adjacent. Also shown in this figure 8, the eight holes of the lower plate 3 which allows attachment of the support arm 1 to another support arm so as to make the scaffold modular.
  • FIG. 9 shows a module 41 which comprises four support arms 1 of equal length and which form the corners of a square while being fixed in them by holding plates 8.
  • these holding plates 8 each comprise two upper and lower arms 9 which are connected at their ends to the fastening means 7 of the support arms 1 so as to hold and fix between them the adjacent support arms 1. Furthermore, these holding plates 8 also comprise vertical panels 10 which extend between the arms 9. As can be seen in FIG. 10, these panels 10 can be formed by perforated and / or curved panels which make it possible to rigidify the assembly of the module 41 thus assembled.
  • FIG. 11 represents a cross-sectional view of the module 41 as represented in FIG. 9.
  • each module 41 comprises four support arms 1 which form the corners of a square and these support arms 1 are connected between them by the holding plates 8 to stiffen the assembly.
  • FIG. 12 shows a detailed view of one of the support arms 1 forming the module 41, this FIG. 12 representing the support arm 1 and its elongated body 4 with its four U-shaped portions 5 which are interconnected or which form a single piece and above which are fixed the upper plate 2 which is itself provided with eight holes for attachment of another upper module.
  • FIG. 13 shows an exemplary embodiment in which tensioning cables 11 are arranged in the opening 6 of the upper or lower plate of the support arm 1 and thus inside the elongated body 4, these setting cables in tension 11 can be tensioned so as to improve the stressing of the support arm 1 when the latter is subjected to high stresses or prestressing.
  • these tensioning cables 11 can pass through several support arms 1 when the latter are fixed to one another by means of the substantially rectangular end plates and in which the eight orifices for fixing a plurality of other modules 41.
  • the elongated body 1 can also be filled with reinforcing materials such as concrete, foam material 12, mortar or the like in order to to improve the strength of the support arms under tension or to seal the cables 11.
  • FIG. 15 represents an overview of two towers 20 formed of a plurality of modules 41 which support a horizontal and triangular reinforcing structure 15.
  • This modular scaffolding system such as that shown in Figure 15 will be explained in detail below.
  • FIG. 16 shows two modules 41 constituting the upper end portion of one of the towers 20 shown in FIG. 15 serving to support the horizontal reinforcing structure 15.
  • the lower module 41 has an upper plate 2 which is directly attached and fixed to the lower plate 3 of the module 41 which is superior thereto so as to form a modular pylon portion 20.
  • these modules 41 which are formed by four support arms 1 can also be completed by tensioning cables which in this case will be directly arranged in the elongated body 4 of each support arm 1.
  • the upper plates 2 of the upper module 41 serve for fixing two I-shaped bearing elements 13, these two I-shaped bearing elements 13 serving themselves. to support a second substantially rectangular support element 14 which is arranged perpendicular to the two I-shaped support elements 13.
  • These two I-shaped or rectangular support elements 14 are generally fixed by means of fixing such as bolts or fixing screws without using a weld spot to improve the modularity of the entire structure.
  • FIG. 17 shows a triangulated cross member 42 which forms part of the horizontal reinforcing structure 15 shown in FIG.
  • This triangulated cross member 42 is formed by a plurality of upper support arms 1 identical to those shown in FIGS. 1 to 5 which are connected to each other. between them by a plurality of contiguous elements 16 which will be described in more detail in the following description.
  • This triangulated crossbar 42 also comprises a plurality of lower support arms 1 which are themselves connected to each other by contiguous elements 16 of the same shape as the upper contiguous elements 16 shown in FIG. 17. Furthermore, these contiguous upper and lower elements lower 16 are interconnected by diagonal support arms 1 which are also formed by support arms 1 identical to those shown in Figures 1 to 5.
  • FIG. 18 shows in detail a contiguous element 16 which comprises, at its two ends, rectangular plates 16a having an opening through which, in particular, tensioning cables can pass which will themselves extend through the support arms 1 or more exactly elongated bodies 4 of support arms 1.
  • Each rectangular plate 16a of a joined element 16 also has eight orifices to allow their attachment to the rectangular plate of the support arms 1.
  • each contiguous element 16 has four base plates 17 which are traversed by two axes for the attachment of two rotating members 18 which also have two perforated plates of eight orifices so as to come attach to the diagonal support arms 1 which will form part of the triangulated cross.
  • the horizontal reinforcing structure 15 comprises two triangulated sleepers 42 which rest directly on the towers. Formed by the modular elements 41, and as can be seen in FIG. 19, the two triangulated crosspieces 42 are connected to each other by means of I-shaped connecting elements 20 which connect the joined elements in a fixed manner. upper 16 of each triangulated cross 42.
  • FIG. 23 shows a detailed figure of the joined element 16 when the latter is connected to two lower support arms 1 and to two diagonal support arms 1.
  • FIG. 24 represents, for its part, the end of one of the towers 20 with its upper module 41 which supports the two support elements 13 at I and the perpendicular support element 14 which itself supports the end of the horizontal reinforcement structure.
  • Fig. 25 shows a prior art scaffolding system for replacing a lift arm
  • Fig. 26 shows a modular scaffolding system according to the invention which also serves to replace a lift arm.
  • the scaffolding system known and shown in Figure 25, by its construction, has many more carrier elements having a relatively large length, which complicates the development of the scaffold while increasing the cost of transport. Moreover, the elements constituting this known scaffold system which is in the form of pylons comprising triangulated crosspieces are not suitable for supporting heavy loads.
  • the scaffolding system according to the invention and shown in Figure 26, with its pylons 20 and its reinforcing structure 15 is capable of supporting loads of up to 16 000kN.
  • Fig. 27 shows a prior art scaffolding system for lifting and moving a generator while Fig. 28 shows a modular scaffolding system according to the invention which is also used for lifting and moving a generator. a same generator.
  • the scaffolding system known and shown in FIG. 27, by its construction, and in particular by the existence of two towers comprising triangulated crosspieces, is not suitable for supporting heavy loads and, moreover, the crossbar also has a relatively large length which also complicates the development of scaffolding while increasing the cost of transport.
  • the scaffolding system according to the invention and shown in Figure 28, by its constitution and including its pylons 20 and its reinforcing structure 15 is able to support and move the generator including have a weight of the order of 6 500kN and while having easy to mount pylons by their modularity as well as the horizontal reinforcement structure that can be easily mounted or dismounted while being made of small elements.
  • FIG. 29 represents another embodiment of the horizontal reinforcement structure 15.
  • the horizontal reinforcing structure 15 here comprises six triangular crosspieces 42 all identical which are aligned so as to form a unit that can in particular be supported by pylons 20 or a plurality of pylons 20.
  • each triangulated cross member 42 has the same number of arms of upper, lower and diagonal supports and the same number of contiguous elements 16 so as to form a preassembled unit.
  • This horizontal reinforcing structure 15 which comprises six triangulated crosspieces 42 may in particular be fixed as a unit by connecting the contiguous elements 16 to each other by beams or crosspieces which sandwich the contiguous elements 16 against each other against each other. the others so as to bring cohesion to this horizontal reinforcing structure 15.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)

Abstract

The arm (1) has a rigid and elongated metallic girder extending at the center of an elongated body (4) between an upper end (2) and a lower end, where the ends are in the form of rectangular plate. The girder has a square section whose sides are arranged opposite to four junctions between lateral branches of four U-shaped portions (5) and whose angle blocks are arranged opposite to a median part of the portions. The ends have an opening that is placed at the center of the body, where the body is formed of reinforcement material e.g. concrete and foam material.

Description

L'invention se rapporte aux bras de support pour système d'échafaudage modulaire et aux systèmes d'échafaudage modulaires comprenant de tels bras de support.The invention relates to support arms for modular scaffolding system and modular scaffolding systems comprising such support arms.

De manière connue en soi, les bras de support et donc les échafaudages modulaires peuvent supporter de faibles ou moyennes charges et ces échafaudages modulaires sont généralement construits à partir d'éléments en acier qui sont fixés les uns aux autres temporairement. Ces échafaudages modulaires connus sont adaptés à des circonstances particulières d'un chantier ou d'un terrain et ne peuvent donc être utilisés qu'une seule fois.In a manner known per se, the support arms and thus the modular scaffolds can support low or medium loads and these modular scaffolds are generally constructed from steel elements that are fixed to each other temporarily. These known modular scaffolds are adapted to particular circumstances of a building site or land and can therefore be used only once.

Par ailleurs, les poutres ou traverses servant à construire ces échafaudages modulaires connus doivent être individuellement ajustées selon leur longueur respective, ce qui présente un inconvénient majeur. De plus, leur transport nécessite des moyens de convoyage de tailles relativement importantes ce qui grève également de manière importante le coût de transport de ces échafaudages modulaires.Furthermore, the beams or sleepers used to build these known modular scaffolds must be individually adjusted according to their respective length, which has a major drawback. In addition, their transport requires conveying means of relatively large sizes which also significantly affect the cost of transport of these modular scaffolds.

Par ailleurs comme on l'a déjà mentionné ci-dessus, les systèmes d'échafaudage modulaires connus qui sont constitués de poutres ou de traverses ne peuvent supporter que de faibles ou de moyennes charges, ce qui implique que ces constructions en acier sont soumises à des charges parfois élevées susceptibles de détériorer de manière irrémédiable leurs joints de connexion notamment lorsque le système d'échafaudage modulaire doit supporter des traverses de large portée.Moreover, as already mentioned above, the known modular scaffolding systems which consist of beams or sleepers can only withstand low or medium loads, which implies that these steel constructions are subject to sometimes high loads that can irreparably damage their connection joints especially when the modular scaffolding system must support wide-span ties.

Par ailleurs, lorsque ces échafaudages modulaires sont utilisés comme dispositifs ou systèmes de levage et de déplacement, ceux-ci sont limités dans leur utilisation du fait de leur faible résistance et de plus ils engendrent des dépenses et des coûts relativement importants tant dans leur mise en place que dans leur utilisation.In addition, where these modular scaffolds are used as lifting or They are limited in their use because of their low resistance and, moreover, they generate relatively high costs and costs both in their implementation and in their use.

Enfin, dans les systèmes d'échafaudages modulaires connus, il est souvent nécessaire de pratiquer des soudures pour moduler les assemblages, ce qui comporte des désavantages importants lors du démantèlement de ces échafaudages.Finally, in known modular scaffolding systems, it is often necessary to practice welds to modulate the assemblies, which has significant disadvantages when dismantling these scaffolds.

L'un des buts de l'invention est de procurer un système d'échafaudage modulaire qui pourrait notamment remplir les critères suivants :

  • soumission à des forces de compression ou à des forces de tension allant au-delà de plusieurs milliers de tonnes ;
  • procurer un démontage ou un montage rapide ;
  • procurer un assemblage rapide et un transport ne nécessitant pas des moyens de transport important ;
  • procurer une modularité de l'assemblage qui peut être utilisée et réutilisée dans tout type de terrain ou de chantier ;et
  • assurer la sécurité et la fiabilité du système d'échafaudage modulaire sur tous les terrains possibles.
One of the aims of the invention is to provide a modular scaffolding system which could in particular fulfill the following criteria:
  • submission to compressive forces or tensile forces exceeding several thousand tons;
  • provide quick disassembly or assembly;
  • provide fast assembly and transportation that does not require significant means of transportation;
  • provide modularity of the assembly that can be used and reused in any type of terrain or site, and
  • ensure the safety and reliability of the modular scaffolding system on all possible terrains.

La présente invention se propose donc de résoudre les inconvénients cités ci-dessus.The present invention therefore proposes to solve the disadvantages mentioned above.

A cet effet, l'invention a pour objet un bras de support pour système d'échafaudage modulaire utilisé dans les structures d'ouvrage, caractérisé en ce qu'il s'étend entre une extrémité inférieure et une extrémité supérieure qui sont reliées entre elles par un corps allongé ayant une section formée par au moins trois portions, et de manière préférentielle quatre portions, en forme de U qui présentent deux branches latérales qui sont chacune solidaires de la branche latérale de la portion en forme de U adjacente.For this purpose, the subject of the invention is a support arm for a modular scaffolding system used in structure structures, characterized in that it extends between a lower end and an upper end which are interconnected. by an elongate body having a section formed by at least three portions, and preferably four U-shaped portions which have two lateral branches which are each integral with the side branch of the adjacent U-shaped portion.

Selon d'autres caractéristiques et/ou avantages de l'invention, on peut éventuellement avoir recours à l'une et/ou à l'autre des dispositions suivantes :

  • les branches latérales des deux portions en forme de U adjacentes forment des angles sensiblement égaux entre elles ;
  • les branches latérales de deux portions en forme de U adjacentes sont sensiblement perpendiculaires entre elles ;
  • la jonction entre deux branches latérales de deux portions en forme de U forme sensiblement un angle arrondi;
  • chacune des extrémités supérieure et inférieure du bras de support se présente sous la forme d'une plaque sensiblement rectangulaire ;
  • la plaque présente une ouverture ;
  • chaque plaque présente au niveau de son contour une pluralité d'orifices destinés à recevoir des organes de fixations pour fixer au moins un autre bras de support pour moduler ledit système d'échafaudage ;
  • une poutre allongée et rigide s'étend entre les portions en forme de U et entre les plaques supérieures et inférieures ;
  • au moins un picot de renfort relie la poutre allongée et l'un des angles arrondi formé par des branches latérales de deux portions en forme de U ;
  • la poutre allongée présente une section sensiblement carrée dont les côtés sont disposés en regard des quatre angles arrondis des branches latérales des quatre portions en forme de U et dont les coins sont disposés en regard des branches médianes des portions en forme de U.
  • des moyens de fixation sont disposés le long du corps allongé pour permettre la fixation d'organes de manutention ;
  • le système d'échafaudage modulaire comprenant au moins un module comportant quatre bras de support selon l'une quelconque des revendications précédentes, les quatre bras de support ayant une longueur égale en formant les coins d'un carré tout en étant fixés entre eux par des plaques de maintien ;
  • chaque plaque de maintien est perforée et/ou ondulée ;
  • des câbles de mise en tension sont disposés à l'intérieur du corps allongé modulaire notamment pour améliorer sa résistance aux charges sous contraintes ;
  • l'intérieur du corps allongé où sont disposés les câbles de mise en tension peut être rempli d'un matériau de renfort ;
  • au moins deux pylônes sont formés chacun par une pluralité de modules, les deux pylônes portant une structure de renfort horizontale et triangulée ;
  • chaque module formant l'extrémité d'un pylône (20) comprend des éléments d'appui conformés pour soutenir la structure de renfort horizontale ;
  • la structure de renfort horizontale comprend au moins une traverse triangulée formée par une pluralité de bras de support supérieurs reliés entre eux par des éléments jointifs supérieurs et par une pluralité de bras de support inférieurs reliés entre eux par des éléments jointifs inférieurs, les éléments jointifs supérieurs et inférieurs étant en outre reliés entre eux par des bras de support disposés diagonalement ;
  • la structure de renfort horizontale comprend une pluralité de traverses triangulées reliées entre elles de manière fixe par des éléments de liaison au niveau des joints supérieurs ;
  • des câbles de mise en tension sont disposés à l'intérieur des bras de support inférieurs et/ou supérieurs de la traverse triangulée pour améliorer leur résistance aux charges sous contraintes.
According to other characteristics and / or advantages of the invention, it is possible to use one and / or the other of the following provisions:
  • the lateral branches of the two adjacent U-shaped portions form substantially equal angles to each other;
  • the side branches of two adjacent U-shaped portions are substantially perpendicular to each other;
  • the junction between two lateral branches of two U-shaped portions substantially forms a rounded angle;
  • each of the upper and lower ends of the support arm is in the form of a substantially rectangular plate;
  • the plate has an opening;
  • each plate has at its contour a plurality of orifices for receiving fasteners for securing at least one other support arm for modulating said scaffolding system;
  • an elongated and rigid beam extends between the U-shaped portions and between the upper and lower plates;
  • at least one reinforcing pin connects the elongated beam and one of the rounded corners formed by side branches of two U-shaped portions;
  • the elongated beam has a substantially square section whose sides are arranged facing the four rounded corners of the lateral branches of the four U-shaped portions and whose corners are arranged opposite the middle branches of the U-shaped portions.
  • fastening means are arranged along the elongate body to allow attachment of handling members;
  • the modular scaffolding system comprising at least one module comprising four support arms according to any one of the preceding claims, the four support arms having an equal length forming the corners of a square while being secured together by holding plates;
  • each holding plate is perforated and / or corrugated;
  • tensioning cables are arranged inside the modular elongated body in particular to improve its resistance to stress loads;
  • the interior of the elongate body where the tensioning cables are arranged may be filled with reinforcing material;
  • at least two pylons are each formed by a plurality of modules, the two pylons carrying a horizontal and triangular reinforcing structure;
  • each module forming the end of a pylon (20) comprises support elements shaped to support the horizontal reinforcing structure;
  • the horizontal reinforcing structure comprises at least one triangulated cross member formed by a plurality of upper support arms interconnected by upper contiguous elements and by a plurality of lower support arms interconnected by lower contiguous elements, the upper contiguous elements and lower are further interconnected by support arms arranged diagonally;
  • the horizontal reinforcing structure comprises a plurality of triangulated crosspieces fixedly connected to one another by connecting elements at the upper joints;
  • tensioning cables are arranged inside the lower and / or upper support arms of the triangulated cross member to improve their resistance to stress loads.

L'invention sera mieux comprise à la lecture de la description qui va suivre qui donne plusieurs modes de réalisation de l'invention et qui est donné à titre d'exemples non limitatifs en se référant aux dessins dans lesquels :

  • les figures 1 à 5 représentent différents modes de réalisation de bras de support conforme à l'invention et servant au système d'échafaudage ;
  • la figure 6 représente une vue en coupe transversale de l'un des bras de support représenté sur les figures 1 à 5 ;
  • la figure 7 représente une portion de l'un des bras de support représenté sur les figures 1 à 5 ;
  • la figure 8 représente une vue en coupe transversale du bras de support représenté du la figure 7 ;
  • la figure 9 représente un module conforme à l'invention qui est adapté pour former en partie le système d'échafaudage modulaire conforme à l'invention
  • la figure 10 est une vue d'une plaque perforée et ondulée formant en partie le module tel que représenté sur la figure 9 ;
  • la figure 11 représente une vue en coupe transversale du module représenté sur la figure 9 ;
  • la figure 12 représente une vue en coupe transversale de l'un des bras de support formant le module représenté sur la figure 11 ;
  • la figure 13 représente une vue en coupe de l'un des bras de support conforme à l'invention dans lequel sont disposés des câbles de mise sous tension ;
  • la figure 14 représente une vue en coupe transversale de l'un des bras de support avec ses câbles de mise en tension et dans lequel est disposé un matériau de renfort ;
  • la figure 15 représente un système d'échafaudage modulaire conforme à l'invention ;
  • la figure 16 représente une partie de l'un des pylônes formant une partie du système d'échafaudage modulaire conforme à l'invention ;
  • la figure 17 représente une structure de renfort conforme à l'invention ;
  • la figure 18 représente en détail l'un des éléments de joint formant le système d'échafaudage modulaire conforme à l'invention ;
  • la figure 19 représente une vue en détail d'une poutrelle rassemblant deux éléments jointifs d'une structure de renfort conforme à l'invention ;
  • les figures 20 à 22 représentent des vues en perspective sous des angles différents d'un élément jointif conforme à l'invention ;
  • la figure 23 représente une vue en perspective d'un élément jointif à partir duquel s'étendent deux bras de support ;
  • la figure 24 représente une vue en perspective d'un module sur lequel sont montées des poutrelles qui supportent la structure de renfort horizontale conforme à l'invention ;
  • la figure 25 représente un système d'échafaudage de l'art antérieur servant pour le remplacement d'un bras élévateur ;
  • la figure 26 représente un système d'échafaudage modulaire conforme à l'invention pour le même système de remplacement d'un bras élévateur ;
  • la figure 27 représente un système d'échafaudage de l'art antérieur pour le levage et le déplacement d'un générateur ;
  • la figure 28 représente un système d'échafaudage modulaire conforme à l'invention pour le levage et le déplacement d'un générateur ; et
  • la figure 29 représente une structure de renfort horizontale conforme à l'invention qui comporte une pluralité de traverses triangulées conformes à l'invention.
The invention will be better understood on reading the following description which gives several embodiments of the invention and which is given as non-limiting examples with reference to the drawings in which:
  • Figures 1 to 5 show different embodiments of support arm according to the invention and serving the scaffolding system;
  • Figure 6 shows a cross-sectional view of one of the support arms shown in Figures 1 to 5;
  • Figure 7 shows a portion of one of the support arms shown in Figures 1 to 5;
  • Fig. 8 is a cross-sectional view of the support arm shown in Fig. 7;
  • FIG. 9 represents a module according to the invention which is adapted to partly form the modular scaffolding system according to the invention
  • Figure 10 is a view of a perforated and corrugated plate forming in part the module as shown in Figure 9;
  • Fig. 11 shows a cross-sectional view of the module shown in Fig. 9;
  • Fig. 12 is a cross-sectional view of one of the support arms forming the module shown in Fig. 11;
  • Figure 13 shows a sectional view of one of the support arms according to the invention in which there are arranged power cables;
  • Figure 14 shows a cross-sectional view of one of the support arms with its tensioning cables and in which is disposed a reinforcing material;
  • FIG. 15 represents a modular scaffolding system according to the invention;
  • Figure 16 shows a portion of one of the towers forming part of the modular scaffolding system according to the invention;
  • Figure 17 shows a reinforcing structure according to the invention;
  • Figure 18 shows in detail one of the joint elements forming the modular scaffolding system according to the invention;
  • Figure 19 shows a detailed view of a beam bringing together two contiguous elements of a reinforcing structure according to the invention;
  • Figures 20 to 22 show perspective views at different angles of a compliant member according to the invention;
  • Fig. 23 is a perspective view of a joined member from which two support arms extend;
  • FIG. 24 represents a perspective view of a module on which beams are mounted which support the horizontal reinforcing structure according to the invention;
  • Fig. 25 shows a scaffolding system of the prior art for replacing a lift arm;
  • Figure 26 shows a modular scaffolding system according to the invention for the same replacement system of a lift arm;
  • Fig. 27 shows a scaffolding system of the prior art for lifting and moving a generator;
  • Figure 28 shows a modular scaffold system according to the invention for lifting and moving a generator; and
  • Figure 29 shows a horizontal reinforcing structure according to the invention which comprises a plurality of triangulated sleepers according to the invention.

Sur les différentes figures, les mêmes références désignent des éléments identiques ou similaires.
Les figures 1 à 5 représentent toutes des bras de support 1 qui s'étendent entre un extrémité supérieure 2 et une extrémité inférieure 3 qui sont reliées entre elles par un corps métallique allongé 4. Dans l'exemple considéré ici, les bras de support peuvent par exemple varier en longueur de 9 centimètres, 27 centimètres, 45 centimètres, 90 centimètres, 180 centimètres et 270 centimètres pour la plus grande.In the different figures, the same references designate identical or similar elements.
FIGS. 1 to 5 all show support arms 1 which extend between an upper end 2 and a lower end 3 which are interconnected by an elongated metal body 4. In the example considered here, the support arms can for example vary in length from 9 centimeters, 27 centimeters, 45 centimeters, 90 centimeters, 180 centimeters and 270 centimeters for the largest.

Ces cinq bras de support 1 représentés sur les figures 1 à 5 ont tous la même section transversale qui est représentée plus en détail sur la figure 6. En effet, chaque corps allongé 4 comprend quatre portions en forme de U 5 qui présentent deux branches latérales solidaires et sensiblement égaux et préférentiellement perpendiculaires, aux branches latérales des portions en forme de U 5 qui sont directement adjacentes.These five support arms 1 shown in Figures 1 to 5 all have the same cross section which is shown in more detail in Figure 6. Indeed, each elongate body 4 comprises four U-shaped portions 5 which have two lateral branches integral and substantially equal and preferably perpendicular to the side branches of the U-shaped portions 5 which are directly adjacent.

Par ailleurs, comme on peut toujours le voir sur la figure 6, la jonction entre deux branches latérales de deux portions en forme de U 5 forme sensiblement un angle arrondi de manière à renforcer la résistance du bras de support dans son ensemble.Furthermore, as can be seen in FIG. 6, the junction between two lateral branches of two U-shaped portions 5 substantially forms a rounded corner so as to enhance the strength of the support arm as a whole.

Par ailleurs, les extrémités supérieure 2 et inférieure 3 de chaque bras de support 1 sont formées par des plaques métalliques sensiblement rectangulaires au centre desquelles sont réalisées des ouvertures 6. Ces ouvertures 6 débouchent directement dans la cavité formée par les quatre portions en forme de U 5 constituant le corps allongé 4.Moreover, the upper 2 and lower 3 ends of each support arm 1 are formed by substantially rectangular metal plates in the center of which are formed openings 6. These openings 6 open directly into the cavity formed by the four U-shaped portions 5 constituting the elongate body 4.

Chaque plaque présente au niveau de son contour extérieur une pluralité d'orifices, par exemple au nombre de 8, destinés à recevoir des organes de fixation pour fixer au moins un autre de bras de support 1 pour moduler ledit système d'échafaudage modulaire.Each plate has at its outer contour a plurality of orifices, for example 8 in number, intended to receive fasteners for fixing at least one other support arm 1 for modulating said modular scaffolding system.

Comme on peut le voir sur la figure 8, chaque bras de support 1 comprend une poutre métallique 30 qui s'étend entre les portions en forme de U 5 et entre les plaques supérieure 2 et inférieure du bras de support. De plus, des picots ou organes de renfort 31, au nombre de 4, peuvent relier la poutre allongée aux angles arrondis des portions en forme de U de manière à augmenter la résistance du bras de support , notamment par rapport aux efforts de flambage.As can be seen in FIG. 8, each support arm 1 comprises a metal beam 30 which extends between the U-shaped portions 5 and between the upper and lower 2 plates of the support arm. In addition, pins or reinforcement members 31, 4 in number, can connect the elongated beam to the rounded corners of the U-shaped portions so as to increase the strength of the support arm, particularly with respect to buckling forces.

La disposition de la poutre allongée 30 dans le bras de support 1 est elle aussi particulière. En effet, comme on peut le voir sur la figure 8, la poutre allongée 30 présente une section sensiblement carrée dont les côtés sont disposés au regard des angles arrondis des branches latérales des portions en forme de U 5 et dont les coins sont disposés en regard des branches médianes des portions en forme de U.The arrangement of the elongated beam 30 in the support arm 1 is also particular. Indeed, as can be seen in Figure 8, the elongate beam 30 has a substantially square section whose sides are arranged with respect to the rounded corners of the side branches of the U-shaped portions 5 and whose corners are arranged opposite mid-branches of the U-shaped portions.

Par ailleurs comme on peut le voir sur les figures 3, 4 et 5, chaque bras de support 1 peut comprendre également des moyens de fixation 7 permettant la fixation d'organes de manutention ou d'autres organes comme on le verra ci-après.Moreover, as can be seen in FIGS. 3, 4 and 5, each support arm 1 may also comprise fastening means 7 for fastening handling members or other members as will be seen below.

Les bras de support 1 représentés sur les figures 1 à 5 et tels qu'ils sont formés par leur corps allongé qui présentent une section formée par quatre portions en forme de U sont susceptibles de supporter des charges axiales allant jusqu'à 2000kN.The support arms 1 shown in Figures 1 to 5 and as they are formed by their elongate body which have a section formed by four U-shaped portions are capable of supporting axial loads up to 2000kN.

Les figures 7 et 8 représentent plus en détail les moyens de fixation 7 pouvant être directement rapportés sur le corps allongé 4 du bras de support 1 et la figure 8 montre à nouveau la section formée par quatre portions en forme de U 5 dont les deux branches latérales sont solidaires et sensiblement perpendiculaires aux branches latérales des portions en forme de U directement adjacentes. On voit également sur cette figure 8, les huit orifices de la plaque inférieure 3 qui permettent une fixation du bras de support 1 à un autre bras de support de manière à rendre modulaire l'échafaudage.FIGS. 7 and 8 show in more detail the fastening means 7 that can be directly attached to the elongated body 4 of the support arm 1, and FIG. 8 again shows the section formed by four U-shaped portions 5, the two branches of which lateral are integral and substantially perpendicular to the side branches of the U-shaped portions directly adjacent. Also shown in this figure 8, the eight holes of the lower plate 3 which allows attachment of the support arm 1 to another support arm so as to make the scaffold modular.

La figure 9 représente un module 41 qui comprend quant à lui quatre bras de support 1 de longueur égale et qui forment les coins d'un carré tout en étant fixés en eux par des plaques de maintien 8.FIG. 9 shows a module 41 which comprises four support arms 1 of equal length and which form the corners of a square while being fixed in them by holding plates 8.

Plus exactement, ces plaques de maintien 8 comprennent chacune deux bras supérieur et inférieur 9 qui sont reliés à leurs extrémités aux moyens de fixations 7 des bras de support 1 de manière à maintenir et à fixer entre eux les bras de support 1 adjacents. Par ailleurs, ces plaques de maintien 8 comprennent également des panneaux verticaux 10 qui s'étendent entre les bras 9. Comme on peut le voir sur la figure 10, ces panneaux 10 peuvent être formés par des panneaux perforés et/ou incurvés qui permettent de rigidifier l'ensemble du module 41 ainsi assemblé.More precisely, these holding plates 8 each comprise two upper and lower arms 9 which are connected at their ends to the fastening means 7 of the support arms 1 so as to hold and fix between them the adjacent support arms 1. Furthermore, these holding plates 8 also comprise vertical panels 10 which extend between the arms 9. As can be seen in FIG. 10, these panels 10 can be formed by perforated and / or curved panels which make it possible to rigidify the assembly of the module 41 thus assembled.

La figure 11 représente une vue en coupe transversale du module 41 tel que représenté sur la figure 9. Comme on peut le voir, chaque module 41 comprend quatre bras de support 1 qui forment les coins d'un carré et ces bras de support 1 sont reliés entre eux par les plaques de maintien 8 afin de rigidifier l'ensemble.FIG. 11 represents a cross-sectional view of the module 41 as represented in FIG. 9. As can be seen, each module 41 comprises four support arms 1 which form the corners of a square and these support arms 1 are connected between them by the holding plates 8 to stiffen the assembly.

La figure 12 montre une vue en détail de l'un des bras de support 1 formant le module 41, cette figure 12 représentant le bras de support 1 et son corps allongé 4 avec ses quatre portions en forme de U 5 qui sont reliées entre elles ou qui ne forment qu'une seule pièce et au-dessus desquelles sont fixées la plaque supérieure 2 qui est elle-même pourvue des huit orifices permettant une fixation d'un autre module supérieur.
La figure 13 montre un exemple de réalisation dans lequel des câbles de mise en tension 11 sont disposés dans l'ouverture 6 de la plaque supérieure ou inférieure du bras de support 1 et donc à l'intérieur du corps allongé 4, ces câbles de mise en tension 11 pouvant être tendus de manière à améliorer la mise sous contrainte du bras de support 1 lorsque ce dernier est soumis à des contraintes ou à des précontraintes élevées.FIG. 12 shows a detailed view of one of the support arms 1 forming the module 41, this FIG. 12 representing the support arm 1 and its elongated body 4 with its four U-shaped portions 5 which are interconnected or which form a single piece and above which are fixed the upper plate 2 which is itself provided with eight holes for attachment of another upper module.
FIG. 13 shows an exemplary embodiment in which tensioning cables 11 are arranged in the opening 6 of the upper or lower plate of the support arm 1 and thus inside the elongated body 4, these setting cables in tension 11 can be tensioned so as to improve the stressing of the support arm 1 when the latter is subjected to high stresses or prestressing.

Bien entendu, ces câbles de mise en tension 11 peuvent traverser plusieurs bras de support 1 lorsque ces derniers sont fixés les uns aux autres au moyen des plaques d'extrémité sensiblement rectangulaires et dans lesquelles sont réalisées les huit orifices servant à la fixation d'une pluralité d'autres modules 41. Selon un autre exemple de réalisation représenté sur la figure 14, le corps allongé 1 peut également être rempli par des matériaux de renfort tels que du béton, du matériau en mousse 12, du mortier ou autre afin d'améliorer la résistance des bras de support mis en tension ou pour assurer l'étanchéité des câbles 11.Of course, these tensioning cables 11 can pass through several support arms 1 when the latter are fixed to one another by means of the substantially rectangular end plates and in which the eight orifices for fixing a plurality of other modules 41. According to another exemplary embodiment shown in FIG. 14, the elongated body 1 can also be filled with reinforcing materials such as concrete, foam material 12, mortar or the like in order to to improve the strength of the support arms under tension or to seal the cables 11.

La figure 15 représente une vue d'ensemble de deux pylônes 20 formés d'une pluralité de modules 41 qui supportent une structure de renfort horizontale et triangulée 15. Ce système d'échafaudage modulaire telle que représenté sur la figure 15 va être expliqué en détail ci-après.FIG. 15 represents an overview of two towers 20 formed of a plurality of modules 41 which support a horizontal and triangular reinforcing structure 15. This modular scaffolding system such as that shown in Figure 15 will be explained in detail below.

La figure 16 montre deux modules 41 qui constituent la partie d'extrémité supérieure de l'un de pylônes 20 représentés sur la figure 15 servant à supporter la structure de renfort horizontale 15.FIG. 16 shows two modules 41 constituting the upper end portion of one of the towers 20 shown in FIG. 15 serving to support the horizontal reinforcing structure 15.

Comme on peut le voir sur cette figure 16, le module inférieur 41 présente une plaque supérieure 2 qui est directement rattachée et fixée à la plaque inférieure 3 du module 41 qui lui est supérieure de manière à former une partie de pylône modulaire 20.As can be seen in this figure 16, the lower module 41 has an upper plate 2 which is directly attached and fixed to the lower plate 3 of the module 41 which is superior thereto so as to form a modular pylon portion 20.

Comme nous l'avons dit précédemment, ces modules 41 qui sont formés par quatre bras de support 1 peuvent être également complétés par des câbles de mise en tension qui dans ce cas seront directement disposés dans le corps allongé 4 de chaque bras de support 1.As we said above, these modules 41 which are formed by four support arms 1 can also be completed by tensioning cables which in this case will be directly arranged in the elongated body 4 of each support arm 1.

Comme on peut toujours le voir sur cette figure 16, les plaques supérieures 2 du module supérieur 41 servent à la fixation de deux éléments d'appui 13 en forme de I, ces deux éléments d'appui 13 en forme de I servant eux-mêmes à supporter un second élément d'appui 14 sensiblement rectangulaire et qui est disposé perpendiculairement aux deux éléments d'appui 13 en forme de I. Ces deux éléments d'appui en forme de I ou de forme rectangulaire 14 sont généralement fixés par des organes de fixation tels que des boulons ou vis de fixation sans utiliser de point de soudure afin d'améliorer la modularité de l'ensemble de l'ouvrage.As can always be seen in this figure 16, the upper plates 2 of the upper module 41 serve for fixing two I-shaped bearing elements 13, these two I-shaped bearing elements 13 serving themselves. to support a second substantially rectangular support element 14 which is arranged perpendicular to the two I-shaped support elements 13. These two I-shaped or rectangular support elements 14 are generally fixed by means of fixing such as bolts or fixing screws without using a weld spot to improve the modularity of the entire structure.

La figure 17 représente une traverse triangulée 42 qui forme une partie de la structure de renfort horizontale 15 représentée sur la figure 15.FIG. 17 shows a triangulated cross member 42 which forms part of the horizontal reinforcing structure 15 shown in FIG.

Cette traverse triangulée 42 est formée par une pluralité de bras de support supérieurs 1 identiques à ceux représentés sur les figures 1 à 5 qui sont reliés entre eux par une pluralité d'éléments jointifs 16 qui seront décrits plus en détail dans la suite de la description. Cette traverse triangulée 42 comprend également une pluralité de bras de support inférieurs 1 qui sont eux-mêmes reliées entre eux par des éléments jointifs 16 de même forme que les éléments jointifs supérieurs 16 représentés sur la figure 17. Par ailleurs, ces éléments jointifs supérieur et inférieur 16 sont reliés entre eux par des bras de support diagonaux 1 qui sont également formés par des bras de support 1 identiques à ceux représentés sur les figures 1 à 5.This triangulated cross member 42 is formed by a plurality of upper support arms 1 identical to those shown in FIGS. 1 to 5 which are connected to each other. between them by a plurality of contiguous elements 16 which will be described in more detail in the following description. This triangulated crossbar 42 also comprises a plurality of lower support arms 1 which are themselves connected to each other by contiguous elements 16 of the same shape as the upper contiguous elements 16 shown in FIG. 17. Furthermore, these contiguous upper and lower elements lower 16 are interconnected by diagonal support arms 1 which are also formed by support arms 1 identical to those shown in Figures 1 to 5.

La figure 18 représente en détail un élément jointif 16 qui comprend à ses deux extrémités des plaques rectangulaires 16a présentant une ouverture au travers de laquelle peuvent notamment passer des câbles de mise en tension qui s'étendront eux-mêmes au travers des bras de support 1 ou plus exactement des corps allongés 4 des bras de support 1.FIG. 18 shows in detail a contiguous element 16 which comprises, at its two ends, rectangular plates 16a having an opening through which, in particular, tensioning cables can pass which will themselves extend through the support arms 1 or more exactly elongated bodies 4 of support arms 1.

Chaque plaque rectangulaire 16a d'un élément jointif 16 présente également huit orifices pour permettre leur fixation à la plaque rectangulaire des bras de support 1.Each rectangular plate 16a of a joined element 16 also has eight orifices to allow their attachment to the rectangular plate of the support arms 1.

Comme on peut le voir sur les figures 20 et 21, chaque élément jointif 16 présente quatre plaques de base 17 qui sont traversées par deux axes permettant la fixation de deux organes de rotation 18 qui présentent également deux plaques perforées de huit orifices de manière à venir se fixer sur les bras de support diagonaux 1 qui vont former en partie la traverse triangulée.As can be seen in Figures 20 and 21, each contiguous element 16 has four base plates 17 which are traversed by two axes for the attachment of two rotating members 18 which also have two perforated plates of eight orifices so as to come attach to the diagonal support arms 1 which will form part of the triangulated cross.

Comme représentée sur la figure 15, la structure de renfort horizontale 15 comprend deux traverses triangulées 42 qui reposent directement sur les pylônes 20 formés par les éléments modulaires 41, et comme on peut le voir sur la figure 19, les deux traverses triangulées 42 sont reliées les unes aux autres au moyen d'éléments de liaison en forme de I 20 qui relient de manière fixe les éléments jointifs supérieurs 16 de chaque traverse triangulée 42.As shown in FIG. 15, the horizontal reinforcing structure 15 comprises two triangulated sleepers 42 which rest directly on the towers. Formed by the modular elements 41, and as can be seen in FIG. 19, the two triangulated crosspieces 42 are connected to each other by means of I-shaped connecting elements 20 which connect the joined elements in a fixed manner. upper 16 of each triangulated cross 42.

La figure 23 représente quant à elle une figure détaillée de l'élément jointif 16 lorsque ce dernier est raccordé à deux bras de support inférieurs 1 ainsi qu'à deux bras de support diagonaux 1.FIG. 23 shows a detailed figure of the joined element 16 when the latter is connected to two lower support arms 1 and to two diagonal support arms 1.

La figure 24 représente quant à elle l'extrémité de l'un des pylônes 20 avec son module supérieur 41 qui supporte les deux éléments d'appui 13 en I ainsi que l'élément d'appui perpendiculaire 14 qui lui-même supporte l'extrémité de la structure de renfort horizontale.FIG. 24 represents, for its part, the end of one of the towers 20 with its upper module 41 which supports the two support elements 13 at I and the perpendicular support element 14 which itself supports the end of the horizontal reinforcement structure.

La figure 25 représente un système d'échafaudage de l'art antérieur servant au remplacement d'un bras élévateur tandis que la figure 26 représente un système d'échafaudage modulaire conforme à l'invention qui sert également au remplacement d'un bras élévateur.Fig. 25 shows a prior art scaffolding system for replacing a lift arm while Fig. 26 shows a modular scaffolding system according to the invention which also serves to replace a lift arm.

Le système d'échafaudage connu et représenté sur la figure 25, de par sa construction, comporte beaucoup plus d'éléments porteurs ayant une longueur relativement importante, ce qui complique l'élaboration de l'échafaudage tout en augmentant les coût de transport. Par ailleurs, les éléments constituants ce système d'échafaudage connu qui se présente sous la forme de pylônes comprenant des traverses triangulées ne sont pas adaptés pour supporter des charges lourdes.The scaffolding system known and shown in Figure 25, by its construction, has many more carrier elements having a relatively large length, which complicates the development of the scaffold while increasing the cost of transport. Moreover, the elements constituting this known scaffold system which is in the form of pylons comprising triangulated crosspieces are not suitable for supporting heavy loads.

A l'inverse, le système d'échafaudage conforme à l'invention et représenté sur la figure 26, de par ses pylônes 20 et sa structure de renfort 15 est capable de supporter des charges allant jusqu'à 16 000kN.Conversely, the scaffolding system according to the invention and shown in Figure 26, with its pylons 20 and its reinforcing structure 15 is capable of supporting loads of up to 16 000kN.

La figure 27 représente un système d'échafaudage de l'art antérieur servant au levage et au déplacement d'un générateur tandis que la figure 28 représente un système d'échafaudage modulaire conforme à l'invention qui sert également au levage et au déplacement d'un même générateur.Fig. 27 shows a prior art scaffolding system for lifting and moving a generator while Fig. 28 shows a modular scaffolding system according to the invention which is also used for lifting and moving a generator. a same generator.

Le système d'échafaudage connu et représenté sur la figure 27, de par sa construction, et notamment de par l'existence des deux pylônes comprenant des traverses triangulées n'est pas adapté pour supporter des charges lourdes et par ailleurs la traverse présente également une longueur relativement importante ce qui complique également l'élaboration de l'échafaudage tout en augmentant le coût des transports.The scaffolding system known and shown in FIG. 27, by its construction, and in particular by the existence of two towers comprising triangulated crosspieces, is not suitable for supporting heavy loads and, moreover, the crossbar also has a relatively large length which also complicates the development of scaffolding while increasing the cost of transport.

A l'inverse, le système d'échafaudage conforme à l'invention et représenté sur la figure 28, de par sa constitution et notamment de ses pylônes 20 et de sa structure de renfort 15 est capable de supporter et de déplacer le générateur pouvant notamment avoir un poids de l'ordre de 6 500kN et ce tout en ayant des pylônes faciles à monter de par leur modularité de même que la structure de renfort horizontale qui peut être facilement montée ou démontée tout en étant constituée d'éléments de petite longueur.Conversely, the scaffolding system according to the invention and shown in Figure 28, by its constitution and including its pylons 20 and its reinforcing structure 15 is able to support and move the generator including have a weight of the order of 6 500kN and while having easy to mount pylons by their modularity as well as the horizontal reinforcement structure that can be easily mounted or dismounted while being made of small elements.

La figure 29 représente un autre mode de réalisation de la structure de renfort horizontale 15. En effet, comme on peut le voir sur cette figure, la structure de renfort horizontale 15 comporte ici six traverses triangulées 42 toutes identiques qui sont alignées de manière à former une unité qui pourra notamment être supportée par des pylônes 20 ou une pluralité de pylônes 20.FIG. 29 represents another embodiment of the horizontal reinforcement structure 15. Indeed, as can be seen in this figure, the horizontal reinforcing structure 15 here comprises six triangular crosspieces 42 all identical which are aligned so as to form a unit that can in particular be supported by pylons 20 or a plurality of pylons 20.

Dans ce mode de réalisation, chaque traverse triangulée 42 présente le même nombre de bras de supports supérieurs, inférieurs et diagonaux ainsi que le même nombre d'éléments jointifs 16 de manière à former une unité préassemblée.In this embodiment, each triangulated cross member 42 has the same number of arms of upper, lower and diagonal supports and the same number of contiguous elements 16 so as to form a preassembled unit.

Cette structure de renfort horizontale 15 qui comporte six traverses triangulées 42 peut notamment être fixée en tant qu'unité en reliant les élément jointifs 16 les uns aux autres par des poutres ou des traverses qui viennent prendre en sandwich les éléments jointifs 16 inférieurs les uns contre les autres de manière à apporter une cohésion à cette structure de renfort horizontale 15.This horizontal reinforcing structure 15 which comprises six triangulated crosspieces 42 may in particular be fixed as a unit by connecting the contiguous elements 16 to each other by beams or crosspieces which sandwich the contiguous elements 16 against each other against each other. the others so as to bring cohesion to this horizontal reinforcing structure 15.

Claims (21)

Bras de support, notamment pour système d'échafaudage modulaire utilisé dans les structures d'ouvrages, caractérisé en ce qu'il s'étend entre une extrémité inférieure (3) et une extrémité supérieure (2) qui sont reliées entre elles par un corps allongé (4) ayant une section formée d'au moins trois portions en forme de U (5) qui présentent deux branches latérales qui sont chacune solidaires de la branche latérale de la portion en forme de U (5) adjacente.Support arm, in particular for modular scaffolding system used in structures of structures, characterized in that it extends between a lower end (3) and an upper end (2) which are interconnected by a body elongated member (4) having a section formed of at least three U-shaped portions (5) having two lateral branches which are each integral with the side branch of the adjacent U-shaped portion (5). Bras de support selon la revendication 1, dans lequel la section du corps allongé est formée de quatre portions en forme de U (5).Support arm according to claim 1, wherein the section of the elongate body is formed of four U-shaped portions (5). Bras de support selon l'une quelconque des revendications précédentes, dans lequel les branches latérales de deux portions en forme de U (5) adjacentes forment des angles sensiblement égaux entre elles.Support arm according to any one of the preceding claims, wherein the side branches of two adjacent U-shaped portions (5) form substantially equal angles to each other. Bras de support selon l'une quelconque des revendications précédentes dans lequel les branches latérales de deux portions en forme de U (5) adjacentes sont sensiblement perpendiculaires entre elles.Support arm according to any of the preceding claims wherein the side branches of two adjacent U-shaped portions (5) are substantially perpendicular to each other. Bras de support selon l'une quelconque des revendications précédentes, dans lequel la jonction entre deux branches latérales de deux portions en forme de U (5) forme sensiblement un angle arrondi.Support arm according to any one of the preceding claims, wherein the junction between two lateral branches of two U-shaped portions (5) substantially forms a rounded angle. Bras de support selon l'une quelconque des revendications précédentes, dans lequel chacune des extrémités supérieure (2) et inférieure (3) du bras de support (1) se présente sous la forme d'une plaque sensiblement rectangulaire.Support arm according to any one of the preceding claims, wherein each of the upper (2) and lower (3) ends of the support arm (1) is in the form of a substantially rectangular plate. Bras de support selon la revendication 6, dans lequel la plaque présente une ouverture (6).Support arm according to claim 6, wherein the plate has an opening (6). Bras de support selon la revendication 6 ou 7 dans lequel chaque plaque présente au niveau de son contour une pluralité d'orifices destinés à recevoir des organes de fixations pour fixer au moins un autre bras de support (1) pour moduler ledit système d'échafaudage.Support arm according to claim 6 or 7 wherein each plate has at its contour a plurality of orifices for receiving fasteners for securing at least one other support arm (1) for modulating said scaffolding system . Bras de support selon l'une quelconque des revendications précédentes, dans lequel une poutre (30) allongée et rigide s'étend entre les portions en forme de U (5) et entre les plaques supérieure (2) et inférieure (3).Support arm according to any of the preceding claims, wherein an elongated and rigid beam (30) extends between the U-shaped portions (5) and between the upper (2) and lower (3) plates. Bras de support selon la revendication précédente, dans lequel au moins un picot de renfort (31) relie la poutre (30) allongée et l'un des angles arrondi formé par des branches latérales de deux portions en forme de U (5) .Support arm according to the preceding claim, wherein at least one reinforcing pin (31) connects the elongated beam (30) and one of the rounded corners formed by side branches of two U-shaped portions (5). Bras de support selon l'une quelconque des revendications 2, 4, 9 ou 10, dans lequel la poutre allongée (30) présente une section sensiblement carrée dont les côtés sont disposés en regard des quatre angles arrondis des branches latérales des quatre portions en forme de U (5) et dont les coins sont disposés en regard des branches médianes des portions en forme de U.Support arm according to any one of claims 2, 4, 9 or 10, wherein the elongated beam (30) has a substantially square section whose sides are arranged opposite the four rounded corners of the lateral branches of the four shaped portions. U (5) and whose corners are arranged opposite the middle branches of the U-shaped portions. Bras de support selon l'une quelconque des revendications précédentes, dans lequel des moyens de fixation (7) sont disposés le long du corps allongé (4) pour permettre la fixation d'organes de manutention.Support arm according to any one of the preceding claims, wherein fixing means (7) are arranged along the elongated body (4) to allow the attachment of handling members. Système d'échafaudage modulaire comprenant au moins un module (41) comportant quatre bras de support (1) selon l'une quelconque des revendications précédentes, les quatre bras de support (1) ayant une longueur égale en formant les coins d'un carré tout en étant fixés entre eux par des plaques de maintien (8).Modular scaffolding system comprising at least one module (41) having four support arms (1) according to any one of the preceding claims, the four supporting arms (1) having an equal length forming the corners of a square while being fixed together by holding plates (8). Système selon la revendication 13, dans lequel chaque plaque de maintien (8) est perforée et/ou ondulée.System according to claim 13, wherein each holding plate (8) is perforated and / or corrugated. Système selon l'une ou l'autre des revendications 13 et 14, dans lequel des câbles de mise en tension (11) sont disposés à l'intérieur du corps allongé (4) modulaire notamment pour améliorer sa résistance aux charges sous contraintes.System according to either of claims 13 and 14, wherein tensioning cables (11) are arranged inside the elongated body (4) modular in particular to improve its resistance to stress loads. Système selon la revendication 15, dans lequel l'intérieur du corps allongé (14) où sont disposés les câbles de mise en tension (11) peut être rempli d'un matériau de renfort (12).The system of claim 15, wherein the interior of the elongate body (14) where the tensioning cables (11) are disposed can be filled with a reinforcing material (12). Système selon l'une quelconque des revendication 13 à 15, dans lequel au moins deux pylônes (20) sont formés chacun par une pluralité de modules (41), les deux pylônes (20) portant une structure de renfort (15) horizontale et triangulée.System according to any one of claims 13 to 15, wherein at least two pylons (20) are each formed by a plurality of modules (41), the two pylons (20) carrying a horizontal and triangular reinforcement structure (15) . Système selon la revendication 16, dans lequel chaque module (41) formant l'extrémité d'un pylône (20) comprend des éléments d'appui (13,14) conformées pour soutenir la structure de renfort horizontale (15).System according to claim 16, wherein each module (41) forming the end of a pylon (20) comprises support elements (13,14) shaped to support the horizontal reinforcing structure (15). Système selon l'une ou l'autre des revendications 17 et 18, dans lequel la structure de renfort horizontale (15) comprend au moins une traverse triangulée (42) formée par une pluralité de bras de support supérieurs (4) reliés entre eux par des éléments jointifs supérieurs (16) et par une pluralité de bras de support inférieurs (4) reliés entre eux par des éléments jointifs inférieurs (16), les éléments jointifs supérieurs et inférieurs (16) étant en outre reliés entre eux par des bras de support (1) disposés diagonalement.A system according to either one of claims 17 and 18, wherein the horizontal reinforcing structure (15) comprises at least one triangulated web (42) formed by a plurality of upper support arms (4) interconnected by upper contiguous members (16) and a plurality of lower support arms (4) interconnected by lower contiguous members (16), the upper and lower contiguous members (16) being further connected to one another by arms support (1) diagonally arranged. Système selon la revendication 19, dans lequel la structure de renfort horizontale (15) comprend une pluralité de traverses triangulées (42) reliées entre elles de manière fixe par des éléments de liaison (20) au niveau des joints supérieurs (16).A system according to claim 19, wherein the horizontal reinforcing structure (15) comprises a plurality of triangulated webs (42) fixedly interconnected by connecting members (20) at the top seals (16). Système selon l'une ou l'autre des revendications 19 et 20, dans lequel des câbles de mise en tension (11) sont disposés à l'intérieur des bras de support inférieurs et/ou supérieurs de la traverse triangulée (42) pour améliorer leur résistance aux charges sous contrainteA system as claimed in either one of claims 19 and 20, wherein tensioning cables (11) are disposed within the lower and / or upper support arms of the triangulated cross member (42) to improve their resistance to stress loads
EP06290678.9A 2006-04-26 2006-04-26 Support arm for a modular scaffolding system as well as modular scaffolding with such an arm Active EP1849930B1 (en)

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EP06290678.9A EP1849930B1 (en) 2006-04-26 2006-04-26 Support arm for a modular scaffolding system as well as modular scaffolding with such an arm

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EP06290678.9A EP1849930B1 (en) 2006-04-26 2006-04-26 Support arm for a modular scaffolding system as well as modular scaffolding with such an arm

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CN103938889A (en) * 2014-04-10 2014-07-23 北京工业大学 Rib plate spaced connecting giant steel support and manufacturing method thereof
FR3025539A1 (en) * 2014-09-05 2016-03-11 Jean Paul Charlec ALUMINUM PROVISIONAL MODULAR STRUCTURES

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WO1996034152A1 (en) * 1995-04-24 1996-10-31 Vanderklaauw Peter M Apparatus and method for a modular support and lifting system
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US5240089A (en) * 1991-07-17 1993-08-31 Speral Aluminum Inc. Modular scaffolding assembly
GB2262562A (en) * 1991-12-20 1993-06-23 Sgb Holdings Ltd Shoring system ledger frame;stud connectors
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CN103938889A (en) * 2014-04-10 2014-07-23 北京工业大学 Rib plate spaced connecting giant steel support and manufacturing method thereof
CN103938889B (en) * 2014-04-10 2016-04-27 北京工业大学 The Huge Steel Open that a kind of floor compartment connects supports and the practice
FR3025539A1 (en) * 2014-09-05 2016-03-11 Jean Paul Charlec ALUMINUM PROVISIONAL MODULAR STRUCTURES

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