BE507322A - - Google Patents

Info

Publication number
BE507322A
BE507322A BE507322DA BE507322A BE 507322 A BE507322 A BE 507322A BE 507322D A BE507322D A BE 507322DA BE 507322 A BE507322 A BE 507322A
Authority
BE
Belgium
Prior art keywords
construction
bolts
pyramid
equal
pyramids
Prior art date
Application number
Other languages
French (fr)
Publication of BE507322A publication Critical patent/BE507322A/fr

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/19Three-dimensional framework structures
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00Structural elongated elements designed for load-supporting
    • E04C3/02Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C3/08Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with apertured web, e.g. with a web consisting of bar-like components; Honeycomb girders
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00Structural elongated elements designed for load-supporting
    • E04C3/30Columns; Pillars; Struts
    • E04C3/32Columns; Pillars; Struts of metal
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00Structural elongated elements designed for load-supporting
    • E04C3/38Arched girders or portal frames
    • E04C3/40Arched girders or portal frames of metal
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/19Three-dimensional framework structures
    • E04B2001/1924Struts specially adapted therefor
    • E04B2001/1933Struts specially adapted therefor of polygonal, e.g. square, cross section
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/19Three-dimensional framework structures
    • E04B2001/1981Three-dimensional framework structures characterised by the grid type of the outer planes of the framework
    • E04B2001/1984Three-dimensional framework structures characterised by the grid type of the outer planes of the framework rectangular, e.g. square, grid
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/19Three-dimensional framework structures
    • E04B2001/199Details of roofs, floors or walls supported by the framework
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/19Three-dimensional framework structures
    • E04B2001/1993Details of framework supporting structure, e.g. posts or walls
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00Structural elongated elements designed for load-supporting
    • E04C3/02Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0486Truss like structures composed of separate truss elements
    • E04C2003/0495Truss like structures composed of separate truss elements the truss elements being located in several non-parallel surfaces

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Bridges Or Land Bridges (AREA)

Description

       

   <Desc/Clms Page number 1> 
 



  PERFECTIONNEMENTS 'APPORTES AUX  CONSTRUCTIONS'DEMONTABLES.   



   La présente invention se rapporte à une construction démontable d'un type nouveau qui possède des applications multiples telles que poteaux; portiques, grues, ponts et cintres. - - 
La construction montée présente la forme d'une poutre réticulée, de directrice rectiligne ou polygonale et de section triangulaire et dont les barres, pouvant être métalliques ou en une autre matière résistante, composent une succession de tétraèdres. 



   Du point de vue du montage l'élément structural est constitué par une pyramide quadrangulaire dont l'indéformabilité est assurée par une ou les deux diagonales du rectangle de base et, dans ce dernier cas, ces dia- gonales forment une croix de St-André. 



   Les pyramides sont toutes égales et, pour constituer la construc- tion, elles sont disposées de façon consécutive, juxtaposées l'une à l'autre par un côté de leur base et réunies par les sommets de chaque pyramide voi- sine au moyen de barres additionnelles formant un cordon dénommé cordon infé- rieur. 



   Les barres de cordon inférieur sont de longueurs variées, afin de conformer la directrice de la construction à une.forme quelconque. 



   La pyramide est décomposable, pour faciliter son transport, en trois panneaux : deux triangles égaux et une croix ou pièce supérieure de rigidification. 



   La description qui va suivre, faite en regard des dessins anne- xés, et donnée à titre d'exemple non limitatif, va bien faire comprendre com- ment l'invention peut être mise en pratique. 



   La figure 1 représente en perspective explosée les pièces qui 

 <Desc/Clms Page number 2> 

 composent un élément de.construction. 



   Sur cette figure, A désigne les triangles, B désigne la croix et C une barre du cordon inférieur; D désigne les boulons de réunion de la croix aux triangles, ! les boulons et écrous de réunion des bases des pyramides consécutives, et F les boulons et écrous de réunion des sommets au cordon inférieur, 
Les boulons D traversent les perforations a des éléments! et se vissent dans les perforations taraudées b de l'élément B. 



   Les boulons et écrous! réunissent la perforation ± d'un élément triangulaire et de la perforation d qui correspond aux éléments de la pyramide suivante. 



   Les boulons et écrous F assujettissent les extrémités perforées en e d'une barre du cordon inférieur entre les goussets perforés! du sommet d'u-   ne pyramide. - . ' '   
La figure 2 montre en perspective schématique un exemple d'accou- plement de ces pièces. 



   Pour illustrer les possibilités   de   ce genre de construction, on a représenté, sur la figure 3 la vue latérale et frontale d'un poteau; sur la figure 4, on a représenté un portique; sur la figure 5, une grue en po- tence; sur la figure 6, on a représenté un pont droit et, enfin, sur la fi- gure 7, on a montré l'application de cette construction comme cintre de 1' arc d'un pont en béton. 



   La structure tétraédrique présente trois caractères avantageux : 
1 . simplicité de montage, possibilité de se passer de   cables   ou grues   auxiliaires,même   dans le cas de cintres de grande ouverture. En tel cas, il suffit d'ancrer sur du ciment la première pyramide de chaque extrémité et en s'appuyant sur celle-ci, de hisser la pyramide suivante, pourvue de sa barre de cordon inférieur et qui est reliée à la première comme ci-dessus mentionné. Pour poursuivre l'opération, on déplace le mécanisme élévateur   à   l'extrémité de la deuxième pyramide et on hisse et assujettit la troisième; et ainsi de suite jusqu'à ce qu'on atteigne la clé par les deux côtés. 



     2 .   adaptation à des directions quelconques en faisant varier ex- clusivement la longueur des barres du cordon inférieur, soit par substitu- tion de barres différentes, soit par action de manchons tenseurs accouplés aux dites barres.- 
3  rigidité et résistance obtenue avec un minimum de barres par la composition tétraédrique, qui a la faculté de résister à des efforts ex- térieurs de direction quelconque et par le fait que le tétraèdre dans l'es- pace, comme le triangle dans le plan, constitue la figure isostatique stric- tement indéformable.



   <Desc / Clms Page number 1>
 



  IMPROVEMENTS 'MADE TO REMOVABLE CONSTRUCTIONS.



   The present invention relates to a new type of demountable construction which has multiple applications such as poles; gantry cranes, bridges and hangers. - -
The mounted construction has the form of a reticulated beam, with a rectilinear or polygonal directrix and a triangular section and whose bars, which may be metallic or of another resistant material, make up a succession of tetrahedra.



   From the point of view of assembly, the structural element is constituted by a quadrangular pyramid whose indeformability is ensured by one or both diagonals of the base rectangle and, in the latter case, these diagonals form a St-André cross. .



   The pyramids are all equal and, to constitute the construction, they are arranged consecutively, juxtaposed to each other by one side of their base and joined by the vertices of each neighboring pyramid by means of bars. additional forming a cord called inferior cord.



   Bottom bead bars are of varying lengths to conform the construction guideline to any shape.



   The pyramid can be broken down, to facilitate its transport, into three panels: two equal triangles and a cross or upper stiffening piece.



   The description which will follow, given with reference to the appended drawings, and given by way of non-limiting example, will make it clear how the invention can be put into practice.



   Figure 1 shows in exploded perspective the parts which

 <Desc / Clms Page number 2>

 make up an element of construction.



   In this figure, A designates the triangles, B designates the cross and C a bar of the lower bead; D designates the connecting bolts from the cross to the triangles,! the bolts and nuts joining the bases of consecutive pyramids, and F the bolts and nuts joining the tops to the lower bead,
The bolts D go through the perforations a elements! and are screwed into the threaded holes b of element B.



   Bolts and nuts! join the perforation ± of a triangular element and the perforation d which corresponds to the elements of the following pyramid.



   Bolts and nuts F secure the perforated E-ends of a lower cord bar between the perforated gussets! from the top of a pyramid. -. ''
FIG. 2 shows in schematic perspective an example of the coupling of these parts.



   To illustrate the possibilities of this type of construction, there is shown in FIG. 3 the side and front view of a post; in Figure 4, there is shown a gantry; in figure 5, a crane in post; in figure 6 a straight bridge has been shown and, finally, in figure 7, the application of this construction as an arch of the arch of a concrete bridge has been shown.



   The tetrahedral structure has three advantageous characteristics:
1. ease of assembly, possibility of eliminating cables or auxiliary cranes, even in the case of hangers with large opening. In such a case, it suffices to anchor the first pyramid at each end on cement and, leaning on it, to hoist the next pyramid, provided with its lower cord bar and which is connected to the first as follows. above mentioned. To continue the operation, the lifting mechanism is moved to the end of the second pyramid and the third is hoisted and secured; and so on until you reach the key from both sides.



     2. adaptation to any direction by varying the length of the bars of the lower bead exclusively, either by substituting different bars, or by the action of tension sleeves coupled to said bars.
3 rigidity and resistance obtained with a minimum of bars by the tetrahedral composition, which has the faculty of resisting external forces in any direction and by the fact that the tetrahedron in space, like the triangle in the plane , constitutes the strictly undeformable isostatic figure.


    

Claims (1)

Il va de soi que sans sortir du cadre de la présente invention, on pourra apporter des modifications aux formes d'exécution qui viennent d' être décrites. - RESUME. It goes without saying that without departing from the scope of the present invention, it is possible to make modifications to the embodiments which have just been described. - ABSTRACT. 'La présente invention comprend notamment : 1 - Une construction démontable comportant des éléments de mon- tage structuraux constitués par des pyramides quadrangulaires égales dont l'indéformabilité est assurée par une ou les deux diagonales du rectangle de base.. The present invention comprises in particular: 1 - A removable construction comprising structural assembly elements made up of equal quadrangular pyramids whose indeformability is ensured by one or both diagonals of the base rectangle. 2 - Des formes d'exécution d'une construction telle que spéci- fiée sous 1, comportant notamment les particularités suivantes, applicables séparément ou en combinaison : @ -- a) les éléments en forme de pyramide quadrangulaire sont suscep- tibles d'être démontées en trois pièces planes, à savoir deux triangles égaux <Desc/Clms Page number 3> et une pièce supérieure de rigidification qui sont susceptibles d'être accou- plés au moyen de boulons; 2 - Execution of a construction as specified in 1, comprising in particular the following features, applicable separately or in combination: - a) the elements in the form of a quadrangular pyramid are likely to be disassembled into three flat pieces, namely two equal triangles <Desc / Clms Page number 3> and an upper stiffening piece which can be coupled by means of bolts; b) les pyramides quandrangulaires égales sont unies par boulons par les côtés adjacents de leur base en accolant chaque pyramide à la suivante et en réunissant le sommet des pyramides voisines par des barres additionnel- les de longueur susceptible d'être variée, cette variation étant utilisée pour obtenir la conformation de la directrice de la construction à la forme voulue. b) When equal rectangular pyramids are united by bolts by the adjacent sides of their base by joining each pyramid to the next and joining the tops of neighboring pyramids by additional bars of varying length, this variation being used to obtain the conformation of the construction director to the desired shape.
BE507322D BE507322A (en)

Publications (1)

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BE507322A true BE507322A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0068676A2 (en) * 1981-06-18 1983-01-05 Mark Whitby Portal frame structures
FR2662197A1 (en) * 1990-05-15 1991-11-22 Samia Cats Crossbracing triangle for connecting two adjacent trusses of a frame

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0068676A2 (en) * 1981-06-18 1983-01-05 Mark Whitby Portal frame structures
EP0068676A3 (en) * 1981-06-18 1983-11-09 Mark Whitby Portal frame structures
FR2662197A1 (en) * 1990-05-15 1991-11-22 Samia Cats Crossbracing triangle for connecting two adjacent trusses of a frame

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