EP0163675B1 - Ferme a treillis - Google Patents

Ferme a treillis Download PDF

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Publication number
EP0163675B1
EP0163675B1 EP19840904108 EP84904108A EP0163675B1 EP 0163675 B1 EP0163675 B1 EP 0163675B1 EP 19840904108 EP19840904108 EP 19840904108 EP 84904108 A EP84904108 A EP 84904108A EP 0163675 B1 EP0163675 B1 EP 0163675B1
Authority
EP
European Patent Office
Prior art keywords
lattice
rafter
truss
head
foot
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
EP19840904108
Other languages
German (de)
English (en)
Other versions
EP0163675A1 (fr
Inventor
Knud Skov
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.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AT84904108T priority Critical patent/ATE41963T1/de
Publication of EP0163675A1 publication Critical patent/EP0163675A1/fr
Application granted granted Critical
Publication of EP0163675B1 publication Critical patent/EP0163675B1/fr
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C3/08—Joists; 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
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C3/11—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with non-parallel upper and lower edges, e.g. roof trusses
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0486—Truss like structures composed of separate truss elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0486—Truss like structures composed of separate truss elements
    • E04C2003/0491—Truss like structures composed of separate truss elements the truss elements being located in one single surface or in several parallel surfaces

Definitions

  • the invention relates to a lattice truss of the type defined in the introductory portion of the claim.
  • a known lattice truss of this type contains bending eccentricities which must be taken into consideration for load capacity.
  • the same is worth for another known lattice truss (DE-A-22 39 573) whose elements are interconnected at each junction by only one bolt and nut.
  • the object of the invention is to provide a lattice truss of the stated type in which only normal forces occur, i.e. either tension or pressure in the lattice bars.
  • each of the joints will be a hinge where the calculation of the forces of load including the dead load does not have to allow for addition of moment loads.
  • the lattice truss of the invention has the additional advantage that the lattice bars can be transported connected with the head of the rafter or the foot of the rafter in a state folded together with the member in question so that the truss can partly be pre-assembled and rapidly be erected on the building site.
  • the general lattice truss of fig. 1 which is supported at the ends, consists of a rafter head 1 and a rafter foot 2 and lattice bars 3 interconnecting these.
  • the joint is assembled as shown successively in figs. 2 to 5.
  • Fig. 2 shows the upper end of a first type lattice bar 10 made of a thin sheet to form a hollow profile, C-profile or U-profile.
  • the lattice bar 10 has rectangular recesses 11, 12 in one set of opposite sides 13, 14.
  • the recesses 11, 12 can receive and snugly surround a secnd type lattice bar 20 likewise manufactured of a thin sheet to form a hollow profile, C-profile or U-profile.
  • the lattice bar 20 has mating holes 23, 24 for a pipe section 30, which has internal threads 31, 32 at each end and the same length as the internal spacing between the second set opposite walls 15, 16 of the first type lattice bar 10; the second set opposite walls 15,16 have mating holes 17, 18 for bolts which are shown and described in connection with fig. 5.
  • Fig. 3 shows how the pipe section 30 has to be disposed when positioned in the mating holes 23, 24 in the lattice bar 20, and fig. 4 shows how the first type lattice bar 10 is positioned so as to surround and support the second type lattice bar 20 in a position in which the mating holes 17, 18 are in register with the threaded holes 31, 32 in the pipe section 30.
  • Fig. 5 shows a rafter head 40 whose profile, which is essentially a U-profile, has been manufactured by cold deformation.
  • the profile has additional bends along the edges so that in the embodiment shown the profile resembles that of a hat.
  • the unclamped connection of fig. 4 is introduced between the branches 41, 42 in the U-profile of the rafter head 40.
  • These branches 41, 42 having mating holes of the same diameter as the mating holes in the lattice bar 10.
  • the Allen screw 50 shown in fig. 5 is inserted through the mating hole 43 in the side of the rafter head 40 shown in fig. 5 and through the mating hole 18 in the lattice bar 10 and is then screwed into the threads 32; and a corresponding Allen screw 50 is inserted through the mating hole (not shown) in the opposite branch 42 of the U-profile and through the mating hole 17 in the lattice bar 10 and is then screwed into the threads 31 in the other end of the pipe section 30.
  • the joint connection shown in fig. 5 at the rafter head 40 is indentical with a joint connection at the rafter foot when fig. 5 is turned upside down, the same U-shaped profile being used for the rafter foot as for the rafter head.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Reinforcement Elements For Buildings (AREA)

Abstract

Dans une ferme à treillis en profilé métallique, les connexions des joints entre la tête (1) ou la base (2) d'un chevron avec deux barres de treillis consistent en une connexion à boulon unique (30). Par opposition aux fermes à treillis connues, seules des forces normales, c-à-d. une tension ou une pression dans les barres de treillis, se produisent dans la présente ferme à treillis de sorte que, dans le calcul des forces de charge, aucune tolérance n'est nécessaire pour des charges de moment additionnelles.

Claims (1)

  1. Armature en treillis, dans laquelle les constituants, c'este-à-dire les parties supérieure et inférieure de chevron et les barres du treillis qui les relient entre eux, consistent chacun en un seul et unique profilé symétrique en tôle mince et ayant chacun deux parois opposées disposées symétriquement, caractérisée en ce que, en chaque point de liaison d'une partie supérieure (40) ou inférieure de chevron avec deux barres (10, 20) du treillis, l'une (10) des barres du treillis comporte un cavité (11, 12) conformée de manière à recevoir l'autre barre (20) du treillis, et en ce que les barres (10, 20) du treillis sont disposées entre les deux parois opposées (41, 42) de la partie supérieure (40) ou inférieure (40) de chevron et reliées à celles-ci aussi bien que l'une avec l'autre au moyen d'un axe d'articulation transversal (30) dont l'axe s'étend à travers les centres de gravité des sections transversales du profilé, de telle sorte que les deux barres du treillis (10, 20) sont symétriques par rapport à un plan longitudinal central de l'armature en treillis, ledit plan étant également un plan de symétrique pour la partie supérieure (40) et inférieure de chevron.
EP19840904108 1983-11-08 1984-11-07 Ferme a treillis Expired EP0163675B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84904108T ATE41963T1 (de) 1983-11-08 1984-11-07 Gittertraeger.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK510983A DK150649C (da) 1983-11-08 1983-11-08 Gitterspaerfag
DK5109/83 1983-11-08

Publications (2)

Publication Number Publication Date
EP0163675A1 EP0163675A1 (fr) 1985-12-11
EP0163675B1 true EP0163675B1 (fr) 1989-04-05

Family

ID=8139522

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840904108 Expired EP0163675B1 (fr) 1983-11-08 1984-11-07 Ferme a treillis

Country Status (4)

Country Link
EP (1) EP0163675B1 (fr)
DE (1) DE3477593D1 (fr)
DK (1) DK150649C (fr)
WO (1) WO1985002218A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999049146A1 (fr) * 1998-03-23 1999-09-30 Cote Claude Structure murale
AU2003904103A0 (en) * 2003-08-06 2003-08-21 QuickFrame Steel Frames Pty Ltd Metal roof truss connection
AU2005209605A1 (en) * 2005-09-08 2007-03-22 Vlaeberg Pty Ltd Metal Roof Truss Connector Assembly
BRPI0924520A2 (pt) * 2009-03-21 2016-05-31 Seccional Brasil SA dispositivo de ajuste coaxial em barras de treliça

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1813373A (en) * 1929-01-22 1931-07-07 Charles L Wooldridge Inc Lattice beam
FR1417350A (fr) * 1964-10-02 1965-11-12 Vallourec Matériau pour constructions dites à treillis
US3541749A (en) * 1968-09-20 1970-11-24 Arthur L Troutner Metal truss
DE2239573A1 (de) * 1972-03-03 1973-09-06 Metalleichtbau Veb K Fachwerktraeger

Also Published As

Publication number Publication date
EP0163675A1 (fr) 1985-12-11
WO1985002218A1 (fr) 1985-05-23
DK510983A (da) 1985-05-09
DK510983D0 (da) 1983-11-08
DK150649C (da) 1987-10-26
DE3477593D1 (en) 1989-05-11
DK150649B (da) 1987-05-11

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