EP0187123A1 - Bauträger mit einer Beton-Metallmischgestaltung - Google Patents

Bauträger mit einer Beton-Metallmischgestaltung Download PDF

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Publication number
EP0187123A1
EP0187123A1 EP85830263A EP85830263A EP0187123A1 EP 0187123 A1 EP0187123 A1 EP 0187123A1 EP 85830263 A EP85830263 A EP 85830263A EP 85830263 A EP85830263 A EP 85830263A EP 0187123 A1 EP0187123 A1 EP 0187123A1
Authority
EP
European Patent Office
Prior art keywords
base plate
web
girder
welded
lattice structure
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
EP85830263A
Other languages
English (en)
French (fr)
Other versions
EP0187123B1 (de
Inventor
Salvatore Leone
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.)
Edis SpA
Original Assignee
Edis SpA
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 Edis SpA filed Critical Edis SpA
Priority to AT85830263T priority Critical patent/ATE57558T1/de
Publication of EP0187123A1 publication Critical patent/EP0187123A1/de
Application granted granted Critical
Publication of EP0187123B1 publication Critical patent/EP0187123B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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 present invention relates to an improvement to the building beams of the so-called mixed structure type, i.e. those comprised of concrete embedding a self-supporting metal girder.
  • the self-supporting metal girders presently used for manufacturing mixed-structure beams are generally comprised of a base plate, along the median line of which a lattice structure is welded, being made of at least one web welded to the base plate and supporting an upper stringer which is also welded to the web.
  • the upper stringer is usually formed of one or more section irons and the web is formed of zigzag bent rounds bars, diagonal rods or, in its simplest configuration, a perforated plate of adequate thickness when considering that the iron required for obtaining said web must be in a quantity enough to render it suitable to withstand the stresses caused by the relative motion between the upper and the lower stringers.
  • This object is achieved through a modification of the structure of the metal girder to the effect that its web is welded to the base plate in a direction parallel to the median line thereof and at a suitable distance therefrom, rather than being welded directly onto the median line itself.
  • the metal girders of the present invention thanks to their novel, offset construction, are capable to be laid with juxtaposed ends for a given length at the pillar regions, so that said ends, coupled by the subsequent concrete casting, co-operate each other in the load distribution.
  • Such a co-operation allows for a lightening of the girder web structure, thus saving some iron required for the manufacture of the web.
  • an appreciable saving of iron is achieved already in the girder construction.
  • a further advantage is in the fact that an additional saving of iron can be obtained in the building yard when the beam is laid, as the iron required to make the U-bolts for anchoring the beams to the pillars is totally saved, these U-bolts being no longer necessary.
  • the ends of two beams placed side by side in the zone of a pillar are mutually joined and anchored to the pillar by a concrete casting, thus rendering superfluous the adoption of said U-bolts.
  • the girder comprises a base plate 1, of metal sheet, having a web 2 welded thereon which supports an upper stringer 3.
  • This stringer 3 in the embodiment shown, is formed of a pair of round bars 4, 4' between which the ends of a multiplicity of diagonal rods 5 are welded, having the other ends clamped between another pair of round bars 6, 6' or onto a lower plate.
  • the whole of the diagonal rods 5 together with the pair of round bars 6, 6' forms the web 2 of this embodiment of metal girder.
  • Fig. 2 it is seen how the web 2, by means of the pair of round bars 6, 6' being a part thereof, is welded to the base plate 1 at some distance from the median line X of said plate, so that the web 2 is positioned within one of the two half portions of the base plate 1. It is clear that the distance of the welding zone from the median line X of the base plate 1 may be chosen as desired, but it should however be appreciated that such a distance cannot be less than a lower limit given by the thickness of web 2, since otherwise this would partially extend beyond the line X into the other half portion.
  • the girder of the invention has the feature that the web 2 and the upper stringer 3 have a length greater than the base plate 1, thus extending at each end beyond said plate 1 along a given length L.
  • a length L is predetermined through the calculations by which the beam is proportioned at the moment of its manufacture.
  • Fig. 3 it is seen how two beams according to the invention are installed on the pillars 7, 8, 9 with special reference to the pillar 7 where the two beams are laid side by side.
  • the length of the base plate 1 corresponds to the distance between pillar 7 and 8 or pillars 7 and 9. It is preferred that the length of the base plate is slightly greater than this distance so as to render the beam installation operations easier.
  • Figs. 4 and 5 clearly show how two stringers are mutually arranged in proximity of a pillar 7 without using auxiliary means to join the ends of the stringers, positioned side by side.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Recrystallisation Techniques (AREA)
  • Rod-Shaped Construction Members (AREA)
EP85830263A 1984-10-19 1985-10-18 Bauträger mit einer Beton-Metallmischgestaltung Expired - Lifetime EP0187123B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85830263T ATE57558T1 (de) 1984-10-19 1985-10-18 Bautraeger mit einer beton-metallmischgestaltung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT23239/84A IT1175872B (it) 1984-10-19 1984-10-19 Perfezionamento nelle travi per edilizia del tipo a struttura mista
IT2323984 1984-10-19

Publications (2)

Publication Number Publication Date
EP0187123A1 true EP0187123A1 (de) 1986-07-09
EP0187123B1 EP0187123B1 (de) 1990-10-17

Family

ID=11205222

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85830263A Expired - Lifetime EP0187123B1 (de) 1984-10-19 1985-10-18 Bauträger mit einer Beton-Metallmischgestaltung

Country Status (4)

Country Link
EP (1) EP0187123B1 (de)
AT (1) ATE57558T1 (de)
DE (1) DE3580160D1 (de)
IT (1) IT1175872B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1431469A3 (de) * 2002-12-20 2006-12-27 Pezzi, Paola Verfahren zur Herstellung eines Pfeilers und seiner Verbindung mit einem Träger, und der dadurch hergestellte Pfeiler

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE385307A (de) * 1931-12-30 1932-01-30
FR1032966A (fr) * 1951-02-21 1953-07-07 Profilés de petite taille à ailes parallèles et, plus particulierement, profilés cintrés, en toutes matières soudables ou collables et procédé de fabrication de tels profilés
FR79058E (fr) * 1961-01-20 1962-10-19 élément de construction préfabriqué à multiples usages
FR1522088A (fr) * 1966-05-13 1968-04-19 Poutre en treillis en acier et son procédé de fabrication
FR2021317A5 (de) * 1969-09-19 1970-07-17 Jacobson Max
US4155150A (en) * 1975-10-06 1979-05-22 Oehmsen Plastic Greenhouse Mfg. Inc. Structural truss assembly and method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE385307A (de) * 1931-12-30 1932-01-30
FR1032966A (fr) * 1951-02-21 1953-07-07 Profilés de petite taille à ailes parallèles et, plus particulierement, profilés cintrés, en toutes matières soudables ou collables et procédé de fabrication de tels profilés
FR79058E (fr) * 1961-01-20 1962-10-19 élément de construction préfabriqué à multiples usages
FR1522088A (fr) * 1966-05-13 1968-04-19 Poutre en treillis en acier et son procédé de fabrication
FR2021317A5 (de) * 1969-09-19 1970-07-17 Jacobson Max
US4155150A (en) * 1975-10-06 1979-05-22 Oehmsen Plastic Greenhouse Mfg. Inc. Structural truss assembly and method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1431469A3 (de) * 2002-12-20 2006-12-27 Pezzi, Paola Verfahren zur Herstellung eines Pfeilers und seiner Verbindung mit einem Träger, und der dadurch hergestellte Pfeiler

Also Published As

Publication number Publication date
ATE57558T1 (de) 1990-11-15
EP0187123B1 (de) 1990-10-17
IT1175872B (it) 1987-07-15
IT8423239A0 (it) 1984-10-19
IT8423239A1 (it) 1986-04-19
DE3580160D1 (de) 1990-11-22

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