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WO1998022670A1 - Bracing truss for concrete or masoned structural layers and method for manufacturing the same - Google Patents

Bracing truss for concrete or masoned structural layers and method for manufacturing the same Download PDF

Info

Publication number
WO1998022670A1
WO1998022670A1 PCT/FI1997/000708 FI9700708W WO9822670A1 WO 1998022670 A1 WO1998022670 A1 WO 1998022670A1 FI 9700708 W FI9700708 W FI 9700708W WO 9822670 A1 WO9822670 A1 WO 9822670A1
Authority
WO
WIPO (PCT)
Prior art keywords
truss
slits
manufacturing
masoned
blank
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.)
Ceased
Application number
PCT/FI1997/000708
Other languages
French (fr)
Inventor
Pauli LAMMINMÄKI
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 PL97333410A priority Critical patent/PL333410A1/en
Priority to EP97913208A priority patent/EP1007800A1/en
Publication of WO1998022670A1 publication Critical patent/WO1998022670A1/en
Priority to NO992431A priority patent/NO992431D0/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • E04C3/06—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with substantially solid, i.e. unapertured, web
    • E04C3/065—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with substantially solid, i.e. unapertured, web with special adaptations for the passage of cables or conduits through the web
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D47/00—Making rigid structural elements or units, e.g. honeycomb structures
    • B21D47/01—Making rigid structural elements or units, e.g. honeycomb structures beams or pillars
    • B21D47/02—Making rigid structural elements or units, e.g. honeycomb structures beams or pillars by expanding
    • 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
    • E04B1/38—Connections for building structures in general
    • E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
    • E04B1/4178—Masonry wall ties
    • E04B1/4185—Masonry wall ties for cavity walls with both wall leaves made of masonry
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
    • E04B5/36—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
    • E04B5/38—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor with slab-shaped form units acting simultaneously as reinforcement; Form slabs with reinforcements extending laterally outside the element
    • 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
    • E04C3/083—Honeycomb girders; Girders with apertured solid web
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
    • E04C5/065—Light-weight girders, e.g. with precast parts
    • 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
    • E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0408—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section
    • E04C2003/0421—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section comprising one single unitary part
    • 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
    • E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0426—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section
    • E04C2003/043—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section the hollow cross-section comprising at least one enclosed cavity
    • 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
    • E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0426—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section
    • E04C2003/0434—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section the open cross-section free of enclosed cavities
    • 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
    • E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0443—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section
    • E04C2003/0465—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section square- or rectangular-shaped
    • 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 a truss bracing concrete or masoned structural layers together.
  • the invention relates also to a method for manufacturing such a truss .
  • the invention relates to a truss for a two-plate thermally insulated prefabricated element for bracing together the inner and outer layers of the element through an insulation.
  • the traditional truss has been manufactured in such a way that separate steel chords are resistance welded to a bent diagonal wire, the product being compiled from three components .
  • An object of the invention is to provide an improved truss, which is lighter, stronger with respect to its weight, builds a weaker cold bridge between the plates, and is more manufacturing friendly.
  • This ob ect is achieved by means of a truss of the invention, the characterizing features of which are set forth in the appended claim 1 or 2.
  • the truss can be manufactured preferably by means of the method defined in the appended claim 3.
  • the element consists m a conventional manner of inner and outer layers 1 and 2 with a thermal insulation 3 therebetween.
  • the layers are tied to each other by means of a truss 4, comprising boundary, substantially parallel chords 5 and diagonal braces 6 therebetween, the number of which can be e.g. three per meter in either direction.
  • the chords 5 are embedded in cast concrete and the diagonal braces 6 are set in junctures between the insulations.
  • the diagonal braces 6 and the chords 5 are manufactured from a single blank, such that there are no welding joints at crossing points 7 of the diagonal braces or at junctures 8 between the same and the chords.
  • This is made possible in such a manner that a blank of sheet material is cut to provide it with slits, the disposition of which is such that, as the blank is stretched from the chords 5 in a direction perpendicular to the slits, the diagonal braces 6 stretch to a sufficient extent for achieving a desired width for the truss.
  • the direction and positioning of the slits is such that, during the stretching, the diagonal braces cannot experience flattening or bending.
  • the blank sheet may have a material thickness which is quite small, e.g. 1-2 mm.
  • the method differs from traditional manufacturing of a meshed structure essentially in the sense that stretching of the entire slit area is effected in a single operation by distancing the chords 5 from each other while the diagonal braces remain substantially coincident with the plane of the original sheet
  • the invention offers the following advantages:
  • the invention is not limited to the above-described exemplary embodiment, but the truss can also be used for bracing on-site masoned brick walls to each other, the chords 5 being embedded in mortar between brick layers, or - in a floor slab for binding to the slab a concrete layer to be cast on top of the slab.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Building Environments (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention relates to a truss bracing concrete or masoned structural layers together and to a method for manufacturing the truss. The truss is used e.g. in a thermally insulated prefabricated element for binding inner and outer element layers (1, 2) to each other through an insulation (3). The truss is manufactured from a blank sheet, which is provided with slits and the blank is stretched in a direction perpendicular to the slits. The slits are disposed and arranged to develop, after stretching of the blank, substantially parallel chords (5) and diagonal braces (6) therebetween, the latter being stretched during the stretching operation.

Description

Bracing truss for concrete or masoned structural layers and method for manufacturing the same
The present invention relates to a truss bracing concrete or masoned structural layers together.
The invention relates also to a method for manufacturing such a truss .
In a preferred embodiment, the invention relates to a truss for a two-plate thermally insulated prefabricated element for bracing together the inner and outer layers of the element through an insulation.
The traditional truss has been manufactured in such a way that separate steel chords are resistance welded to a bent diagonal wire, the product being compiled from three components .
An object of the invention is to provide an improved truss, which is lighter, stronger with respect to its weight, builds a weaker cold bridge between the plates, and is more manufacturing friendly.
This ob ect is achieved by means of a truss of the invention, the characterizing features of which are set forth in the appended claim 1 or 2. The truss can be manufactured preferably by means of the method defined in the appended claim 3.
The invention will now be described in more detail with reference made to the accompanying drawing, which illustrates m section a prefabricated element fitted with a truss of the invention.
The element consists m a conventional manner of inner and outer layers 1 and 2 with a thermal insulation 3 therebetween. The layers are tied to each other by means of a truss 4, comprising boundary, substantially parallel chords 5 and diagonal braces 6 therebetween, the number of which can be e.g. three per meter in either direction. The chords 5 are embedded in cast concrete and the diagonal braces 6 are set in junctures between the insulations.
The diagonal braces 6 and the chords 5 are manufactured from a single blank, such that there are no welding joints at crossing points 7 of the diagonal braces or at junctures 8 between the same and the chords. This is made possible in such a manner that a blank of sheet material is cut to provide it with slits, the disposition of which is such that, as the blank is stretched from the chords 5 in a direction perpendicular to the slits, the diagonal braces 6 stretch to a sufficient extent for achieving a desired width for the truss. Thus, the direction and positioning of the slits is such that, during the stretching, the diagonal braces cannot experience flattening or bending. The blank sheet may have a material thickness which is quite small, e.g. 1-2 mm. The method differs from traditional manufacturing of a meshed structure essentially in the sense that stretching of the entire slit area is effected in a single operation by distancing the chords 5 from each other while the diagonal braces remain substantially coincident with the plane of the original sheet
With respect to the traditional truss structure, the invention offers the following advantages:
- a lighter structure
- no structure-weakening and possibly corrosion-inflicting welds
- increased number of diagonal braces and crossing points thereof results in a structure which is lm- proved in terms of material strength
- structure is lightened even further as a result of shape-strengthening occurring as the diagonal braces are stretching - a thinner structure builds a weaker cold bridge between the plates
- more friendly in terms of manufacturing.
The invention is not limited to the above-described exemplary embodiment, but the truss can also be used for bracing on-site masoned brick walls to each other, the chords 5 being embedded in mortar between brick layers, or - in a floor slab for binding to the slab a concrete layer to be cast on top of the slab.

Claims

Claims
1. A truss bracing concrete or masoned structural layers together, c h a r a c t e r i z e d in that a truss (4) consists of a solid sheet material and it includes substantially parallel chords (5) and diagonal braces (6) therebetween .
2. A truss for two-plate thermally insulated prefabricated element for bracing inner and outer element layers (1, 2) to each other through an insulation (3), c h a r a c t e r i z e d in that a truss (4) consists of a solid sheet material and it includes substantially parallel chords (5) and diagonal braces (6) therebetween.
3. A method for manufacturing a truss as set forth in claim 1 or 2, c h a r a c t e r i z e d in that a blank sheet is cut to provide it with slits and the blank is stretched in a direction perpendicular to the slits, said slits being disposed to develop substantially parallel chords (5) and diagonal braces (6) therebetween, the latter stretching during said stretching operation, such that the chords (5) are set at a distance from each other matching a desired width for the truss .
PCT/FI1997/000708 1996-11-20 1997-11-20 Bracing truss for concrete or masoned structural layers and method for manufacturing the same Ceased WO1998022670A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PL97333410A PL333410A1 (en) 1996-11-20 1997-11-20 Strengthening steel latticework for concrete or brick masonry structures and method of making same
EP97913208A EP1007800A1 (en) 1996-11-20 1997-11-20 Bracing truss for concrete or masoned structural layers and method for manufacturing the same
NO992431A NO992431D0 (en) 1996-11-20 1999-05-20 Stiffening trusses for concrete or masonry structural layers and process for making the same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI964630A FI100904B (en) 1996-11-20 1996-11-20 The trap of a double-slab thermally insulated building element and the method of making it
FI964630 1996-11-20

Publications (1)

Publication Number Publication Date
WO1998022670A1 true WO1998022670A1 (en) 1998-05-28

Family

ID=8547096

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1997/000708 Ceased WO1998022670A1 (en) 1996-11-20 1997-11-20 Bracing truss for concrete or masoned structural layers and method for manufacturing the same

Country Status (5)

Country Link
EP (1) EP1007800A1 (en)
FI (1) FI100904B (en)
NO (1) NO992431D0 (en)
PL (1) PL333410A1 (en)
WO (1) WO1998022670A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008102955A1 (en) * 2007-02-20 2008-08-28 Hyundai Engineering & Construction Co., Ltd. Composite girder having connection structure of inclined members in composite girder with steel truss web using embedded t-type perfobond and such connection structure
CN106978879A (en) * 2017-05-25 2017-07-25 江苏省建筑科学研究院有限公司 A kind of prefabricated sandwich heat-insulation wall plate with novel connector
US11066826B2 (en) 2018-08-21 2021-07-20 John David Wright Insulatable, insulative framework apparatus and methods of making and using same

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2052024A (en) * 1934-11-20 1936-08-25 Harry W Hahn Metal stud for buildings
FI46426B (en) * 1970-02-16 1972-11-30 Ky Teraespeikko
US3812558A (en) * 1970-04-30 1974-05-28 H Watanabe Method and apparatus for manufacturing expanded structural members and its products
EP0136618A2 (en) * 1983-10-06 1985-04-10 Richter-System GmbH & Co. KG Sheet metal profile for the supporting shell of double-walled partitions

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2052024A (en) * 1934-11-20 1936-08-25 Harry W Hahn Metal stud for buildings
FI46426B (en) * 1970-02-16 1972-11-30 Ky Teraespeikko
US3812558A (en) * 1970-04-30 1974-05-28 H Watanabe Method and apparatus for manufacturing expanded structural members and its products
EP0136618A2 (en) * 1983-10-06 1985-04-10 Richter-System GmbH & Co. KG Sheet metal profile for the supporting shell of double-walled partitions

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008102955A1 (en) * 2007-02-20 2008-08-28 Hyundai Engineering & Construction Co., Ltd. Composite girder having connection structure of inclined members in composite girder with steel truss web using embedded t-type perfobond and such connection structure
CN106978879A (en) * 2017-05-25 2017-07-25 江苏省建筑科学研究院有限公司 A kind of prefabricated sandwich heat-insulation wall plate with novel connector
US11066826B2 (en) 2018-08-21 2021-07-20 John David Wright Insulatable, insulative framework apparatus and methods of making and using same
US11808031B2 (en) 2018-08-21 2023-11-07 J. David Wright LLC Insulatable, insulative framework apparatus and methods of making and using same

Also Published As

Publication number Publication date
FI100904B (en) 1998-03-13
NO992431L (en) 1999-05-20
FI964630A0 (en) 1996-11-20
EP1007800A1 (en) 2000-06-14
PL333410A1 (en) 1999-12-06
NO992431D0 (en) 1999-05-20

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