EP1997972B1 - Mécanisme amélioré pour la connexion d'un tuyau au noeud d'une structure tridimensionnelle - Google Patents

Mécanisme amélioré pour la connexion d'un tuyau au noeud d'une structure tridimensionnelle Download PDF

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Publication number
EP1997972B1
EP1997972B1 EP20080386009 EP08386009A EP1997972B1 EP 1997972 B1 EP1997972 B1 EP 1997972B1 EP 20080386009 EP20080386009 EP 20080386009 EP 08386009 A EP08386009 A EP 08386009A EP 1997972 B1 EP1997972 B1 EP 1997972B1
Authority
EP
European Patent Office
Prior art keywords
bolt
sleeve
conical end
pin
bearing surface
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.)
Active
Application number
EP20080386009
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German (de)
English (en)
Other versions
EP1997972A3 (fr
EP1997972A2 (fr
Inventor
George A. Gamanis
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
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Individual
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Publication of EP1997972A2 publication Critical patent/EP1997972A2/fr
Publication of EP1997972A3 publication Critical patent/EP1997972A3/fr
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Publication of EP1997972B1 publication Critical patent/EP1997972B1/fr
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    • 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
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/19—Three-dimensional framework structures
    • 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
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/19—Three-dimensional framework structures
    • E04B1/1903—Connecting nodes specially adapted therefor
    • E04B1/1906—Connecting nodes specially adapted therefor with central spherical, semispherical or polyhedral connecting element
    • 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
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/19—Three-dimensional framework structures
    • E04B2001/1924—Struts specially adapted therefor
    • E04B2001/1927—Struts specially adapted therefor of essentially circular cross section
    • 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
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/19—Three-dimensional framework structures
    • E04B2001/1957—Details of connections between nodes and struts
    • E04B2001/196—Screw connections with axis parallel to the main axis of the strut

Definitions

  • the present disclosure relates to an improved mechanism having the features of the preamble of claim 1.
  • Mechanisms of this type are well known. They are useful for the construction of space frames of any structural form, e.g. for buildings.
  • the main advantage of mechanisms of this type is that there are no openings through the walls of the structural components of the tubular framework members, e.g. relatively large openings through the walls of the conical end, for the insertion of the bolts, and longitudinal slotted holes through the walls of the sleeve, for the passing through of the pin and for the longitudinal movement of the bolt with the pin with respect to the sleeve, as is shown in Figures 1 , 2 , 3 and 5 of document DE 901955 .
  • the longitudinal slotted holes through the walls of the sleeve reduce the ultimate compression resistance of the sleeve. In this case, it is possible to have premature failure of the sleeve due to plastic buckling.
  • the longitudinal slotted holes through the walls of the sleeve expose the most highly stressed portion of the bolt to the environment; thus it is possible for dust and water to collect between the bolt and the walls of the sleeve.
  • the presence of specific chemical compounds in the environment e.g. aqueous electrolytes, particularly when containing H 2 S, may induce cracking of the bolt.
  • This cracking stress-corrosion cracking
  • Document GR 1004166 discloses a mechanism which comprises the features of the preamble of claim 1; and document EP 0557235 B1 discloses a mechanism comprising features contained in the preamble of claim 1.
  • Incomplete (i.e. less than the required) length of engagement in the threaded assembly is likely to happen under the following possible conditions: when the length of the internal thread of the node connector has been manufactured to a length shorter than the required length of engagement, when there is a manufacturing error, or damage, in the internal thread of the node connector or in the external thread of the bolt, or when the erection worker has not fully screwed the bolt into the threaded hole of the node connector. If this occurs in the assembled space frame, the corresponding mechanism cannot carry tension; and, when the space frame is loaded, the redistribution of internal forces may overload neighboring tubular framework members.
  • the bolt with the pin If failure of the threaded assembly should occur, it is preferable for the bolt with the pin to break rather than to have either the external or internal thread stripped; and the length of engagement of mating threads should be sufficient to carry the full load necessary to break the bolt without the threads stripping. This length determines the required length of engagement to prevent stripping of either the external or internal thread in mechanisms of this type.
  • Another object is to provide an improved mechanism which solves the connection problem of the pipe in a simple, economical and aesthetic manner; and this with a minimum number of different components.
  • Still another object is to provide an improved mechanism with increased structural reliability.
  • the structure according to Figure 1 is called a three-dimensional structure or space frame and comprises the node connectors 1 and the tubular framework members 30.
  • the three-dimensional structure according to Figure 1 is useful for the construction of wide span roofs in buildings, such as exhibition pavilions, airport halls, covered sports facilities, shopping centers, training centers, museums, etc.
  • the node connectors 1 are spherical, with partial flat bearing surfaces 11, distributed on their outer surface, having radial threaded holes 10.
  • Each tubular framework member 30 comprises one metal pipe 9 and two improved mechanisms 12, fixed to the ends of the metal pipe 9, which connect the ends of the metal pipe 9 to the node connectors 1.
  • Each improved mechanism 12 comprises a bolt 8, a pin 4, a sleeve 3, a socket set screw 2 and a conical end 7.
  • the bolt 8 has a hole for the passing through of the pin 4 and a radial groove 18, preferably cylindrical with a bottom which has the form of a spherical cap.
  • the axis 5 of the radial groove 18 is perpendicular to the longitudinal axis 15 of the bolt 8; and is in the same plane with the longitudinal axis 15 of the bolt 8.
  • the sleeve 3 has a front bearing surface 23, a rear bearing surface 13, a longitudinal hole for the passing through of the bolt 8, two opposite longitudinal grooves 14, on the walls of the longitudinal hole, where the ends of the pin 4 move, and a radial threaded hole 20 of small diameter, which has the same circumferential position with either one of the two opposite longitudinal grooves 14, the axis 6 of which is approximately perpendicular to the longitudinal axis 15 of the bolt 8 and is in the same plane with the longitudinal axis 15 of the bolt 8.
  • the small diameter radial threaded hole 20 is very close to the rear bearing surface 13 of the sleeve 3.
  • the socket set screw 2 is screwed through the radial threaded hole 20.
  • the conical end 7 has a longitudinal hole 17 for the passing through of the bolt 8 and is welded to the pipe 9 with a circumferential weld 16 which has preferably been ground.
  • the bolt 8, the sleeve 3, the conical end 7 and the pipe 9 have a common longitudinal axis 15.
  • This common longitudinal axis 15 is the longitudinal axis of the tubular framework member 30.
  • the axis 5 of the radial groove 18 and the axis 6 of the radial threaded hole 20 are configured to have the same circumferential position, and the same longitudinal position exactly when the bolt 8 is fully screwed and the bolt head 19 is in contact with the rear bearing surface 29 of the conical end 7, as is shown in Figure 3 .
  • the bolt head 19 is in contact with the internal end 29 of tubular framework member 30.
  • the front bearing surface 28 of the conical end 7 is in contact with the rear bearing surface 13 of the sleeve 3 and the front bearing surface 23 of the sleeve 3 is in contact with the flat bearing surface 11 of the node connector 1 of the space frame.
  • Figure 4 also shows another embodiment of the improved mechanism 12 according to the present invention, in which the sleeve 3 is configured so that, when the bolt 8 is at its rearmost position with respect to the conical end 7, and the rear bearing surface 13 of the sleeve 3 is in contact with the conical end 7, the front end 22 of the bolt 8 is flush with the front bearing surface 23 of the sleeve 3.
  • This embodiment allows for the replacement of the tubular framework member 30, e.g. in case of damage or assembly error during erection, when the tubular framework member 30 is located between two node connectors 1 which have constant distance in space, i.e. their relative positions in space with respect to time remain constant, provided that the tubular framework member 30 has not been loaded.
  • pipe 9 In order to assemble the tubular framework member 30 between two node connectors 1 of constant distance, pipe 9 has a relatively small - with respect to the diameter of the pipe 9 - opening 26 so that by using a suitable tool, e.g. a long, and of small size, Allen wrench, a gentle force can be applied to the head of the bolt 8, so that the front end 22 of the bolt 8 comes into contact with the threaded hole 10 of the node connector 1 for the start of the bolt screwing. After the assembly of the space frame, the relatively small opening 26 is sealed using a plug 27 or by any other appropriate manner.
  • a suitable tool e.g. a long, and of small size, Allen wrench
  • the improved mechanism of Figure 4 is useful for the construction of space frames of any structural form, e.g. cylindrical, spherical or free-form.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Joining Of Building Structures In Genera (AREA)

Claims (8)

  1. Mécanisme amélioré (12) pour la connexion d'un tuyau (9) au noeud d'une structure tridimensionnelle (1) comprenant:
    - un boulon (8) avec une goupille cylindrique (4), ledit boulon (8) ayant un trou pour y passer ladite goupille cylindrique (4);
    - un manchon (3) configurée pour faire tourner ladite goupille cylindrique (3), ledit manchon (3) ayant un trou radial fileté (20) et seulement deux rainures longitudinales opposées (14) ou les extrémités de ladite goupille cylindrique (4) se déplacent, ledit trou radial fileté (20) ayant la même position circonférentielle avec l'une seulement de lesdites deux rainures longitudinales opposées (14);
    - une vis de réglage (2) visée à travers ledit trou radial fileté (20);
    - une extrémité conique (7) fixée sur ledit tuyau (9), ladite extrémité conique (7) ayant un trou longitudinal (17) pour y passer ledit boulon (8);
    caractérisé en ce que:
    - ledit boulon (8) a une rainure radiale (18) entre ledit trou pour y passer ladite goupille cylindrique (4) et la tête du boulon (19), ladite rainure radiale (18) formée par la soustraction du volume d'un solide du volume dudit boulon (8), ledit solide comprenant un solide de révolution; et
    - ladite rainure radiale (18) et ledit trou radial fileté (20) ont la même position circonférentielle; et la même position longitudinale exactement quand ledit manchon (3) est en contact avec la surface de siège avant (28) de ladite extrémité conicale (7), et ladite tête du boulon (19) est en contact avec la surface de siège arrière (29) de ladite extrémité conicale (7).
  2. Mécanisme amélioré (12) selon la revendication 1, caractérisé en ce que ledit solide comprend en plus une calotte sphérique.
  3. Mécanisme amélioré (12) selon la revendication 1, caractérisé en ce que l'extrémité arrière (24) de ladite vis de réglage (2) est au moins au même niveau avec la surface péripherale la plus extérieure (25) dudit manchon (3), quand l'extrémité avant (21) de ladite vis de réglage (2) est insérée dans ladite rainure radiale (18), ladite extrémité avant (21) de ladite vis de réglage arrivant le fond de ladite rainure radiale (18).
  4. Mécanisme amélioré (12) selon la revendication 1, caractérisé en ce que le déplacement longitudinal dudit boulon (8) quant à ladite extrémité conique (7) est restreint:
    - par le contact de ladite goupille cylindrique (4) sur ladite vis de réglage (2), l'extrémité avant (21) de ladite vis de réglage (2) faisant saillie dans ladite rainure longitudinale (14), et ledit manchon (3) étant en contact avec ladite surface de siège (28) de ladite extrémité conique (7); et, vers la direction opposée,
    - par le siège de ladite tête du boulon (19) sur la surface de siège arrière (29) de ladite extrémité conique (7).
  5. Mécanisme amélioré (12) selon la revendication 1, caractérisé en ce que le déplacement maximal longitudinal dudit boulon (8) quant à ladite extrémité conique (7) est restreint:
    - par le contact de ladite goupille cylindrique (4) sur ladite surface de siège avant (28) de ladite extrémité conique (7), l'extrémité avant (21) de ladite vis de réglage (2) ne faisant pas saillie dans ladite rainure longitudinale (14); et, vers la direction opposée,
    - par le siège de ladite tête du boulon (19) sur ladite surface de siège arrière (29) de ladite extrémité conique (7).
  6. Mécanisme amélioré (12) selon la revendication 1, caractérisé en ce que l'extrémité avant (22) dudit boulon (8) est au même niveau avec la surface de siège avant (23) dudit manchon (3), quand ladite goupille cylindrique (4) est en contact avec ladite surface de siège (28) de ladite extrémité conique (7), ledit manchon (3) étant en contact avec ladite surface de siège avant (28) de ladite extrémité conique (7).
  7. Mécanisme amélioré (12) selon la revendication 1, caractérisé en ce que ledit tuyau (9) a au moins un trou radial (26).
  8. Mécanisme amélioré (12) selon la revendication 7, comprenant en plus un moyen d'étanchéité (27) pour ledit au moins un trou radial (26).
EP20080386009 2007-05-29 2008-05-27 Mécanisme amélioré pour la connexion d'un tuyau au noeud d'une structure tridimensionnelle Active EP1997972B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GR20070100661A GR1005940B (el) 2007-05-29 2007-05-29 Μηχανισμος για τη συνδεση ενος σωληνα σε ενα κομβο τρισδιαστατων κατασκευων.

Publications (3)

Publication Number Publication Date
EP1997972A2 EP1997972A2 (fr) 2008-12-03
EP1997972A3 EP1997972A3 (fr) 2010-07-21
EP1997972B1 true EP1997972B1 (fr) 2012-12-26

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ID=39597318

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Application Number Title Priority Date Filing Date
EP20080386009 Active EP1997972B1 (fr) 2007-05-29 2008-05-27 Mécanisme amélioré pour la connexion d'un tuyau au noeud d'une structure tridimensionnelle

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EP (1) EP1997972B1 (fr)
GR (1) GR1005940B (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110318461B (zh) * 2019-06-24 2024-04-12 太原理工大学 圆钢管支撑连接用螺栓鼓形球面壳节点
CN110318470A (zh) * 2019-07-24 2019-10-11 上海联创设计集团股份有限公司 螺栓球节点平板支座

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE901955C (de) 1950-07-23 1954-06-14 Mengeringhausen Max Bauelement fuer Fachwerke, insbesondere Gerueste aus Stahlrohren, mit Kupplungsvorrichtung
GB2240605B (en) * 1990-01-31 1993-07-28 Yoshida Kogyo Kk Three dimensional frame structure
GR1001160B (el) 1992-02-20 1993-05-24 Georgios Gkamanis Μηχανισμος για τη συνδεση ενος σωληνα με ενα κομβο τρισδιαστατων κατασκευων.
GR1004166B (el) 2002-03-11 2003-02-26 Γεωργιος Αχιλλεα Γκαμανης Μηχανισμος για τη συνδεση ενος σωληνα σε ενα κομβο τρισδιαστατων κατασκευων.

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Publication number Publication date
GR1005940B (el) 2008-06-09
EP1997972A3 (fr) 2010-07-21
EP1997972A2 (fr) 2008-12-03

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