EP0140908B1 - Noeud de liaison des barres d'un treillis tridimensionnel - Google Patents

Noeud de liaison des barres d'un treillis tridimensionnel Download PDF

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Publication number
EP0140908B1
EP0140908B1 EP84901187A EP84901187A EP0140908B1 EP 0140908 B1 EP0140908 B1 EP 0140908B1 EP 84901187 A EP84901187 A EP 84901187A EP 84901187 A EP84901187 A EP 84901187A EP 0140908 B1 EP0140908 B1 EP 0140908B1
Authority
EP
European Patent Office
Prior art keywords
heels
parts
node
connection according
node connection
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.)
Expired
Application number
EP84901187A
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German (de)
English (en)
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EP0140908A1 (fr
Inventor
Karl Heinz Stienen
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Individual
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Individual
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Publication date
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Priority to AT84901187T priority Critical patent/ATE36020T1/de
Publication of EP0140908A1 publication Critical patent/EP0140908A1/fr
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Publication of EP0140908B1 publication Critical patent/EP0140908B1/fr
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—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
    • 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
    • E04B2001/1966—Formlocking connections other than screw connections
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/34—Branched
    • Y10T403/341—Three or more radiating members
    • Y10T403/342—Polyhedral
    • Y10T403/343—Unilateral of plane

Definitions

  • the invention relates to a node connection of the truss rods of a space framework of the type specified in the preamble of claim 1.
  • knot connections are intended to hold the truss bars, which are usually made of tubular steel, and which meet at the node points of the space framework, partly at right and partly at oblique angles, firmly and rigidly together.
  • a knot connection according to the preamble of claim 1 is known (FR-A-2250395), in which the depressions of the pairs of mutually facing interfaces of the parts of the knot element body are semi-cylindrical, to form cylindrical cavities adapted to the ends of the tubular truss rods.
  • the depressions of the pairs of mutually facing interfaces of the parts of the knot element body are semi-cylindrical, to form cylindrical cavities adapted to the ends of the tubular truss rods.
  • one of the interfaces facing each other at this plane is circular and provided with two diametrical, semicylindrical depressions crossing each other at right angles.
  • the other interface is circular in one embodiment and provided with radial, semi-cylindrical depressions which extend from the outer to the inner edge of the circular ring, their length roughly corresponding to the outer diameter of the truss rods and their distance from the center of the circular ring (geometric node) larger than the outer diameter of the truss rods is.
  • both boundary surfaces facing one another at the equatorial plane are circular and provided with diametrical, semicylindrical depressions which cross each other at right angles.
  • cavities are formed in both embodiments by pairs of opposing, semi-cylindrical recesses at interfaces, the length of which also corresponds approximately to the outer diameter of the truss rods and the distance from the geometric node is greater than is the outside diameter of the truss rods, these cavities and truss rod ends being designed for an additional positive fit.
  • the cylindrical surfaces are unfavorable for the frictional connection, because a large-area contact is practically impossible.
  • the truss rods are connected to each other by the knot element the more firmly and rigidly, the greater the length of the truss rod ends, on which the parts of the knot element engage non-positively or non-positively and positively. This length is limited, on the one hand, by the fact that the truss ends come closer and closer together towards the node, so that they can no longer be firmly enclosed in the node element as required. This provides a minimum distance between the truss ends and the node.
  • the large knot elements are also relatively heavy, which is why parts of the known knot element are partially hollow in terms of casting technology. What has been said about the minimum dimensions or the minimum diameter of the node element also applies analogously to a similar, known node element for tubular truss rods (FR-A-2 310 488). in which, however, only a non-positive connection is provided and the parts of the node element are not partially hollow.
  • a known knot element with truss rods FR-A-2136 936) of a different type, a ball is provided at each truss rod end, which is supported in a partially cylindrical cavity or partially by an arched, hollow cavity and partly by a raised conical surface.
  • the truss rod is pivotally connected to the node element.
  • a pull exerted on it must be absorbed even with a large ball diameter from very small contact surfaces with the node element. Given the tensile strength of the connection required for space trusses, this requires large balls, which likewise require a large diameter of the hemispherical or spherical node element.
  • the invention seeks to remedy this.
  • the invention as characterized in the claims, solves the problem of creating a node element and a truss rod adapted to it, in the design of which aesthetic desires can be largely met.
  • the advantages achieved by the invention are essentially to be seen in the fact that the plate-shaped, preferably trapezoidally tapered lattice bar approaches in the node element up to close to the geometric node point are non-positively on flat surfaces and possibly also positively, what smaller node elements and thus an aesthetically less cumbersome spatial subject work enables.
  • a spherical node element body is composed of two parts 1 and 2, which are held together by a screw 3.
  • the part 1 has the shape of a hemisphere 4 with spacers 5 molded onto one another at intervals, which are parts of ball wedges cut off at 45 ° to the center of the ball 6.
  • Fig. 2 the boundary between the hemisphere shape and one of the approaches 5 is indicated by a dotted line 7.
  • the other part 2 has the shape of a spherical section (spherical cap) 8 with integrally formed lugs 9 which engage between the lugs 5 and also form parts of spherical wedges. 2
  • the boundary between the spherical cutout shape and one of the lugs 9 is indicated by a dotted line 10.
  • each projection 9 in FIG. 1 and one of the surfaces 14 which extend on the hemisphere base 7 between two projections 5 form a pair of adjacent or adjacent (see wu) interfaces of parts 1 and 2.
  • the in FIG 2. The upper end face 15 of each attachment 5 and one of the surfaces 16 extending between two attachments 9 on the jacket 10 of the spherical cut-out shape 8 form further pairs of adjacent or adjacent (see wu) interfaces.
  • the wedge surfaces (side surfaces) 18 of adjacent lugs 5 and 9 abut one another.
  • a cavity 20 and 21, directed towards the ball center 6, is formed, in which a cavity adapted to it Approach 23 of a truss rod 24 is seated and held in a force-locking manner or according to FIG. 5 or 6 in a positive-locking or non-positive and positive manner.
  • one or both interfaces can be provided with a depression.
  • the cavities can extend in the circumferential direction (based on the axis line of the screw 3) up to the wedge surfaces 18, so that the surfaces 13, 14 or 15, 16 of the interface pairs do not contact one another or only between the inner end of the cavity 20 or 21 and touch the hole provided for the screw 3 and are otherwise adjacent.
  • the extension 23 of the truss rods 24 is a plate which is partially inserted into the tubular rod body 25 (FIGS. 5-7) and is tapered trapezoidally at the end protruding from this end, which plate is welded into slots in the tubular rod body 25 and, if the inner diameter of the tube is sufficient, also inside can be welded to the pipe.
  • the approach 23 can also be formed on a peg inserted into the tube, which expediently has one or more holes that make it possible to protect the truss rod provided with the approaches from the inside by hot-dip galvanizing from rust.
  • the lugs 23 can for the purpose of positive locking instead of recesses (Fig. 5 and 6) also with projections, for. B. humps, provided that the cross-section of the approaches is not reduced, and the projections corresponding to the projections on the appropriately cast spherical recesses are more favorable in terms of casting technology than corresponding recesses, raised areas.
  • the positive locking can also be achieved by lateral projections, i.e. H. widened positions can be achieved.
  • the flank of projections facing the spherical surface can run perpendicular to the longitudinal direction of the rod, so that the force that occurs when a tension is exerted on the rod does not have a component that drives the spherical parts between which the attachment is held apart.
  • a spherical node element body is composed of three parts 31, 32 and 33, which are held together by a screw 3.
  • the part 31 has the shape of a hemisphere;
  • the part 32 is an annular body with a flat surface 36 which is adjacent to or adjacent to the flat surface 35 of the hemisphere 31. It is circumferential by a spherical zone and on its side facing away from the hemisphere 31 by a conical surface 37 in the center of the sphere 6 lying cone tip limited.
  • the part 33 is a spherical cutout, the conical surface 38 of which adjoins the surface 37.
  • the two flat surfaces 35 and 36 of parts 31 and 32 form a first pair of abutting interfaces
  • the two conical surfaces 37 and 38 of parts 32 and 33 form a second pair of abutting interfaces.
  • a plurality of cavities are formed for receiving the shoulders 23 of the truss rods 24, to which the statements made with regard to FIGS. 1 and 2 apply mutatis mutandis.
  • the embodiment according to FIGS. 3 and 4 because it is in three parts, enables a better adhesion or requires less precision than that described in connection with FIGS. 1 and 2.
  • the conical surfaces 15 and 16 or 37 and 38 can be replaced by pyramid outer surfaces.
  • the spherical shape is technically expedient and aesthetic, but it is not required to function.
  • the upper half in FIGS. 2 and 4 can e.g. B. also be limited like a polyhedron, while the lower half can largely be designed as desired.
  • the knot elements shown in FIGS. 1 to 4 are designed for four belt bars lying in one plane and for four diagonal bars on one and the same side of the belt plane.
  • the embodiment according to FIGS. 3 and 4 can easily be carried out for a further four diagonal bars on the other side of the belt plane, by replacing part 31 by a part that is the same as part 32 and a part that is the same as part 33, which is a mirror image of the parts 32 and 33 are to be arranged.

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

Abstract

Un élément de noeud sphérique est formé de plusieurs parties (31, 32, 33) retenues par une vis (3), parties qui se touchent en des surfaces limites (35, 36) situées dans un plan contenant le point nodal géométrique (6) et qui se touchent une à une en des surfaces limites (37/38) inclinées par rapport à ce plan et orientées vers le point nodal (6). Des évidements pratiqués sur ces paires de surfaces limites (35/36 et 37/38) permettent la formation, sur le côté extérieur de l'élément, de cavités (20, 21) ouvertes et orientées vers le point nodal géométrique (6); ces cavités reçoivent chacune par adhérence et/ou par blocage un talon (23) d'une extrémité de barre de treillis (24) qui leur (20, 21) est adapté.

Claims (11)

1. Noeud de liaison des barres d'un treillis tridimensionnel dans lequel est prévu un corps d'élément de noeud constitué par l'assemblage de plusieurs parties (1, 2 ; 31, 32, 33) maintenues assemblées à force, qui présentent des surfaces limites (13/14, 15/16 ; 35/36, 37/38) de paires inclinées l'une vers l'autre et tournées l'une vers l'autre qui sont munies de cavités pour la formation d'espaces creux (20, 21), lesquels (20, 21) s'ouvrent sur la surface extérieure du corps de l'élément de nœud, sont dirigés vers le centre géométrique (6) du noeud et sont adaptés aux extrémités des barres (24) du treillis de manière à maintenir ces extrémités à force, ou à force et par concordance de formes, dans le corps de l'élément de noeud sous l'effet de la force maintenant les parties (1, 2 ; 31, 32, 33) du corps de l'élément de nœud, caractérisé en ce que les extrémités des barres du treillis comprennent des embases (23) en forme de plaques qui sont reliées fermement à la barre de treillis (24) et sont en alignement avec elle, et en ce que la section transversale des cavités est de forme rectangulaire et plate en vue de la formation d'espaces creux (20, 21) respectivement adaptés à chacune des embases (23).
2. Noeud de liaison selon la revendication 1, caractérisé en ce que les parties (1, 2 ; 31, 32, 33) du corps de l'élément de noeud sont maintenues assemblées par un boulon (3) dont la ligne axiale passe par le centre géométrique (6) du nœud, et en ce que les espaces creux (20, 21) sont constitués dans une paire (35/36) ou dans plusieurs paires (13/14) de surfaces limites d'un plan perpendiculaire à la ligne axiale du boulon (3) et dans une paire (37/38) ou dans plusieurs paires (15/16) de surfaces limites formant avec ce plan un angle aigu et dirigées vers le centre géométrique (6) du nœud.
3. Noeud de liaison selon la revendication 2, caractérisé en ce que le corps de l'élément de noeud est constitué par l'assemblage de deux parties (1, 2), dont la première (1) comprend des embases (5) en saillie sur une surface (14) perpendiculaire au boulon (3) et disposées autour du boulon (3) à des intervalles mutuels, comprenant des surfaces frontales (15) dirigées vers le centre géométrique (6) du nœud, et la seconde partie (2) comprend des embases (9) en saillie sur une surface conique ou sur plusieurs surfaces planes (16) dirigées vers le centre géométrique (6) du noeud et comprenant des surfaces frontales (13) perpendiculaires au boulon (3), et en ce que les embases (5) de la première partie (1) se disposent entre les embases (9) de la seconde partie (2), et en ce que les espaces creux (20, 21) sont constitués chacun entre les surfaces frontales (15 ou 13) d'une embase (5 ou 9) de l'une des deux parties (1 ou 2) et la surface (16 ou 14) voisine et parallèle de l'autre partie (2 ou 1), desquelles font saillie les embases (5 ou 9) (figures 1 et 2).
4. Noeud de liaison selon la revendication 3, caractérisé en ce que le corps en deux parties (1, 2) de l'élément de noeud est de forme sphérique, en ce que sa première partie (1) a la forme d'une demi-sphère (4) avec des embases (5) formées sur sa base (7) et formant des parties de cônes sphériques, et sa seconde partie (2) a la forme d'une section de sphère (8) avec également des parties d'embase (9) formant des parties de cônes sphériques, qui se disposent entre les embases (5) de la première partie (figures 1 et 2).
5. Noeud de liaison selon la revendication 2, caractérisé en ce que le corps de l'élément de liaison est constitué par l'assemblage d'au moins trois parties, la première (31) et la seconde (32) étant en contact dans un plan (35, 36) et la seconde (32) et la troisième (33) étant en contact par une surface conique (37, 38) ou par des parties de'surface d'enveloppe d'une pyramide, la pointe du cône ou de la pyramide étant situé au centre géométrique (6) du noeud, et les espaces creux (20, 21) étant constitués sur ces surfaces de contact (35/36 ou 37/38) (figures 3 et 4).
6. Noeud de liaison selon la revendication 5, caractérisé en ce que le corps en trois parties (31, 32, 33) de l'élément de noeud est de forme sphérique, en ce que sa première partie a la forme d'une demi-sphère (31), sa seconde partie (32) est de forme annulaire et comprend une surface en zone de sphère pour sa surface plane (36) qui est à la limite de la base (35) de la demi-sphère (31), et une surface conique (37) ou une surface d'enveloppe pyramidale à l'opposé de sa surface plane (36), et la troisième partie (33) a la forme d'une section de sphère avec une surface (38) limite de ladite surface (37) de la seconde partie (32) ainsi qu'une surface en calotte sphérique (figures 3 et 4).
7. Noeud de liaison selon la revendication 5 ou 6, caractérisé en ce que la première partie est constituée par l'assemblage d'une quatrième et d'une cinquième parties, la quatrième partie étant semblable à la seconde et la cinquième partie semblable à la troisième, les quatrième et cinquième parties étant disposées symétriquement par rapport à la seconde et à la troisième parties par rapport au plan, et d'autres espaces creux destinés à la réception d'extrémités de barres de treillis étant constitués au niveau des paires de surfaces limites entre la seconde et la quatrième parties ainsi qu'entre la quatrième et la cinquième parties.
8. Noeud de liaison selon l'une quelconque des revendications 1 à 7, caractérisé en ce que la largeur des embases (23) en forme de plaques des barres du treillis vont en diminuant sous une forme de préférence trapézoïdale en direction de leur extrémité libre (figures 5-7).
9. Nœud de liaison selon l'une quelconque des revendications 1 à 8, caractérisé en ce que les embases (23) des barres de treillis comprennent des creux ou des saillies en vue d'une liaison par concordance de formes avec l'élément de noeud et les surfaces des espaces creux (20, 21) des saillies ou des cavités correspondantes (figures 5 et 6).
10. Nœud de liaison selon la revendication 9, caractérisé en ce que les surfaces des creux et des saillies qui sont soumises à une traction exercée sur une barre du treillis sont disposées perpendiculairement à la direction longitudinale de la barre de treillis.
11. Noeud de liaison selon l'une quelconque des revendications 1 à 10, caractérisé en ce qu'une partie arrière et à angle droit des embases en forme de plaques (23) des barres du treillis s'enfonce dans le corps (25) des barres de forme tubulaire du treillis et est fermement reliée à celui-ci.
EP84901187A 1983-04-19 1984-03-23 Noeud de liaison des barres d'un treillis tridimensionnel Expired EP0140908B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84901187T ATE36020T1 (de) 1983-04-19 1984-03-23 Knotenverbindung der fachwerkstaebe eines raumfachwerks.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2089/83 1983-04-19
CH208983 1983-04-19

Publications (2)

Publication Number Publication Date
EP0140908A1 EP0140908A1 (fr) 1985-05-15
EP0140908B1 true EP0140908B1 (fr) 1988-07-27

Family

ID=4225634

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84901187A Expired EP0140908B1 (fr) 1983-04-19 1984-03-23 Noeud de liaison des barres d'un treillis tridimensionnel

Country Status (6)

Country Link
US (1) US4624090A (fr)
EP (1) EP0140908B1 (fr)
JP (1) JPS60501066A (fr)
BR (1) BR8406799A (fr)
DE (1) DE3472988D1 (fr)
WO (1) WO1984004123A1 (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4866902A (en) * 1986-04-11 1989-09-19 Wayne State University Joint for space frame
ZA883392B (en) * 1987-08-09 1990-01-31 Alois Kohl Rainer Space frame assembly
AU628170B2 (en) * 1989-05-09 1992-09-10 Ilmar Pold Improvements relating to connectors
US4974986A (en) * 1989-08-28 1990-12-04 Cook Robert W Connector for variable-shape spaceframe structural system
US5421666A (en) * 1993-09-24 1995-06-06 Spears; Donald L. Pipe connector for framework fabrication
US5626434A (en) * 1995-08-21 1997-05-06 Cook; Robert W. Connector for variable-curvature spaceframe structural system
US8387330B2 (en) * 2003-04-24 2013-03-05 Ulrich Wallner System, method and device for producing a supporting framework or rigid girder structure
US7921613B2 (en) 2008-06-11 2011-04-12 Koichi Paul Nii Terraced structured land joint and assembly system
US9731773B2 (en) * 2015-03-11 2017-08-15 Caterpillar Inc. Node for a space frame
US10570606B2 (en) * 2016-04-15 2020-02-25 Kevin Douglas Hoy Support-frameworks
US11292530B2 (en) 2019-10-25 2022-04-05 Caterpillar Inc. Space frame center lower frame connection
US11235806B2 (en) 2019-10-25 2022-02-01 Caterpillar Inc. Space frame front lower frame connection
US11130524B2 (en) * 2019-10-25 2021-09-28 Caterpillar Inc. Space frame center upper frame connection
US11186315B2 (en) 2019-10-25 2021-11-30 Caterpillar Inc. Space frame front upper frame connection
US11358641B2 (en) 2019-10-25 2022-06-14 Caterpillar Inc. Space frame center upper frame nodal connection
US11040648B2 (en) 2019-10-25 2021-06-22 Caterpillar Inc. Space frame dump body pivot, suspension node, and rear frame connection

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR405398A (fr) * 1908-07-27 1909-12-28 Jean Jacques Darnal Procédé de construction de charpentes métalliques pour domes
US3333375A (en) * 1964-10-08 1967-08-01 Western Electric Co Frame for supporting a dome shaped building
FR2136936B1 (fr) * 1971-05-10 1973-05-11 Maymont Paul
FR2250395A5 (en) * 1973-11-02 1975-05-30 Eclairage Tech Assembly device for false ceiling framework - three part sphere locks tubes so their axes meet at a point
DE2520510A1 (de) * 1975-05-07 1976-11-18 Otto Baessler Verbindungs-knotenstueck
GB2065820B (en) * 1979-11-26 1983-07-20 Design Research Marketing Pty Nodal joint for space frames

Also Published As

Publication number Publication date
WO1984004123A1 (fr) 1984-10-25
DE3472988D1 (en) 1988-09-01
JPS60501066A (ja) 1985-07-11
BR8406799A (pt) 1985-03-19
EP0140908A1 (fr) 1985-05-15
US4624090A (en) 1986-11-25

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