WO2009146502A1 - Ensemble structural réglable et procédé - Google Patents

Ensemble structural réglable et procédé Download PDF

Info

Publication number
WO2009146502A1
WO2009146502A1 PCT/AU2009/000710 AU2009000710W WO2009146502A1 WO 2009146502 A1 WO2009146502 A1 WO 2009146502A1 AU 2009000710 W AU2009000710 W AU 2009000710W WO 2009146502 A1 WO2009146502 A1 WO 2009146502A1
Authority
WO
WIPO (PCT)
Prior art keywords
members
structural assembly
flange
assembly
flanges
Prior art date
Application number
PCT/AU2009/000710
Other languages
English (en)
Inventor
Campbell John Seccombe
David William Humphrey
Original Assignee
Bluescope Steel Limited
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 Bluescope Steel Limited filed Critical Bluescope Steel Limited
Publication of WO2009146502A1 publication Critical patent/WO2009146502A1/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/005—Girders or columns that are rollable, collapsible or otherwise adjustable in length or height
    • 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
    • E04C3/07—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with substantially solid, i.e. unapertured, web at least partly of bent or otherwise deformed strip- or sheet-like material
    • 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
    • E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
    • E04B2001/2466—Details of the elongated load-supporting parts
    • E04B2001/2472—Elongated load-supporting part formed from a number of parallel profiles
    • 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
    • E04C2003/0413—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 being built up from several parts
    • E04C2003/0417—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 being built up from several parts demountable
    • 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
    • E04C2003/0404—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
    • E04C2003/0473—U- or C-shaped

Definitions

  • the present invention relates generally to a structural assembly and has been developed especially, but not exclusively, for use in framing systems for prefabricated buildings and the like, and the invention is herein described in that context. However it is to be appreciated that the invention has broader application and is not limited to that particular use. In further aspects, the invention is also directed to methods of forming a structural assembly and to methods of using structural assemblies in a building environment.
  • a structural assembly comprising first and second members, the members being nested one within the other and being arranged to telescope along an axis of the assembly on application of a predetermined threshold load applied along the axis.
  • the threshold load is greater than 1,000 Newtons and in a particular form is between 5,000 and 10,000 Newtons.
  • a structural assembly where the length of the assembly can be adjusted by application of a threshold load.
  • a threshold load typically this force is one which requires the use of pressing equipment and is beyond that which could be done manually.
  • a structural assembly according to the above form has significant advantage in the area of prefabricated construction for building frames and the like where minor adjustment (say less than 20 millimetres) of the member length may be required.
  • the assembly forms a structural member (such as a beam or column element or the like) and is provided in a slightly oversized form and can be simply adjusted to its required length in a factory environment by being placed in an appropriate press.
  • the structural assembly can be provided as a "standard" member and simply resized on site quickly and efficiently if required.
  • a method of forming a structural assembly of a required length comprising steps of providing an adjustable assembly as defined above having a length along an axis greater than that required, and telescopically shortening the adjustable assembly along the axis to the required length.
  • the structural assembly comprises opposite ends disposed along the axis and wherein one end of each of the members forms respective ones of the ends of the assembly.
  • the end fittings are attached to at least one of the assembly ends .
  • each of the first and second members is formed as C-sections comprising first and second flanges, and a web interconnecting the first and second flanges.
  • the first and second members are nested so as to form a closed section with the webs of the members being in opposing spaced relation and the first and second flanges of the first member overlapping the other of the first and second flanges of the second member .
  • each flange has a return at a distal end thereof, and the web and the return of the first member interferes with the web and return of the second member to provide resistance to the predetermined threshold force.
  • first flanges of the first and second members locate against an inner side of a second flange of the other of the first and second members .
  • to telescope the members to provide axial shortening of the assembly requires a predetermined range of load to be applied. To be able to achieve this, it is necessary to control the dimensions of the respective members so that the frictional forces between the nested members are not too great or too low to prevent the telescoping of the members within that predetermined range.
  • the first flange of at least one of the members has formations which influence a dimension of that member which in turn allows some control over the threshold loading.
  • a characteristic of that formation can be varied which in turn varies the dimensions of the first member.
  • the formation has an adjustable depth wherein variation of the depth changes the length of the first flange. By having control of this dimension it is possible to control the frictional forces in the nested members to some extent .
  • this formation is in the form an axial groove extending along the first flange .
  • the invention is directed to a profiled member for use in a structural assembly according to any form described above .
  • the formation (with its characteristics that may be varied) is set following testing of samples of the structural assembly to ensure that the predetermined threshold force required to telescope the members is within the predetermined range. In one form this is achieved by taking samples from the manufacturing line (typically a cold roll forming line) ; nesting the two members together and then testing the load required to cause telescoping of the nested members. If the force required is too great, then the dimension of the first flange is reduced (typically by increasing the depth of the formation) . If the threshold force is too low, then the dimension of the first flange is increased by reducing the depth of the formation.
  • the manufacturing line typically a cold roll forming line
  • the invention is directed to a profiled member for use in a structural assembly according to any form described above.
  • the invention is directed to a profiled member extending in an axial direction between opposite ends thereof, the member being formed as a C section having first and second flanges, a web interconnecting the first and second flanges, and an axial groove extending along the first flange.
  • the invention provides a method of making an adjustable assembly formed from first and second members that are disposed in a nested arrangement, at least one of the members having a formation that influences a dimension of that member, the method comprising the steps of: establishing a required configuration of the formation of the at least one member so that when the first and second members are nested together the members are able to telescope along an axis of the assembly on application of a threshold load within a predetermined range along the axis; forming the first and second members with the required configuration of the formation; and nesting the first and second members, which either are in a preform state or a final state, one within the other to form the structural assembly.
  • the invention is directed to a method of making an adjustable assembly, the method comprising the steps of: forming first and second preform members, each preform member having a first and a second flange and a web interconnecting the first and second flanges; nesting the first and second preform members one within the other to form a closed section with the webs of the members being in opposed spaced relationship, and the first flange of each member locating against an inner side of the second flange so that the first and second flanges overlap, and folding the distal end margins of the second flange of each of the first and second preform members over to form a return in contact with the web of the second and first members respectively to form the adjustable assembly.
  • the method further comprises the steps of establishing a required configuration of a formation in the first flange of the first and second members, each formation influencing the length of the respective flange in which it is located so that in the first and second members of the structural assembly are able to telescope along an axis of the assembly on application of a predetermined threshold load along the axis, and forming the first and second preform members with the required configuration of the formation.
  • Fig. IA is a side view of a structural assembly according to an embodiment of the invention.
  • Fig. IB is a plan view of the assembly of Fig. IA;
  • Fig. 2 is a detailed view of an end connection for the assembly of Fig. IA;
  • Fig. 3 is an end view of the assembly of Fig. IA;
  • Fig. 4 is an end view of a member which forms a component of the assembly of Fig. IA.
  • Fig.5 is an end view of the member of Fig.4 in a preform state;
  • Fig.6 is an end view of the assembly of Fig. IA showing the members in a preform state in phantom.
  • a structural assembly 10 is disclosed which is formed from first and second channel members 11, 12 which are nested so as to form a hollow section.
  • Each of the members 11,12 are identical and as best illustrated in Fig. 4 include a web 13 that incorporates longitudinal upper and lower grooves 14 and 15, a first flange 16, a second flange 17 and respective distal returns 18 and 19.
  • a characteristic feature of the members 11,12 is that the first flange 16 incorporates a longitudinal groove 20. As will be explained in more detail below the depth of the groove 20 may be controlled during manufacture of the members 11, 12 so as to provide some control over the length of the flange 16.
  • the assembly 10 is formed by nesting of the channel members 11,12 so as to form a box section. Whilst these members 11,12 are of identical length, they are nested in an arrangement wherein they are slightly offset (X) from one another along an axis A of the structural assembly. With this arrangement, one end 21 of the assembly 10 is formed by an end 22 of the first member 11 whereas the other end 23 of the structural assembly 10 is formed by an end 24 of the second structural member 12. In the illustrated embodiment this offset (X) of the first and second members 11,12 is relatively minor and is typically less than 50 mm. However it is to be appreciated that the overlap could vary depending on the requirements of the application in which the assembly 10 is used.
  • the assembly 10 further incorporates notches 25,26 at the respective ends 21 and 23 of the assembly 10.
  • the assembly 10 in the illustrated form is used as a beam in a prefabricated building and the notches 25 and 26 are provided to accommodate a steel wall system projecting upwardly from the respective ends of the beams.
  • end plates 27 are arranged to be secured to the ends 21 and 23 by mechanical fasteners 28 through gusset plates 29 located internally within the hollow section.
  • the structural assembly 10 is provided with the offset channel members 11 and 12 so that in use the members can be telescoped one within the other to reduce the overall length of the assembly 10.
  • the maximum amount of reduction in length is equal to the amount of offset.
  • the length of the structural assembly may vary but is typically in the order of 2 and 3 metres.
  • any telescopic adjustment of the assembly to reduce the length of that assembly is not done manually but is required to be done using a pressing equipment with the force typically in the order of 5,000 to 10,000 Newtons .
  • the channelled members 11 and 12 are nested together so that the respective webs 13 of the channel members are in opposing relationship and the first flanges 16 locate within the second flanges 17. Furthermore the return 19 of the second flange 17 locates over a portion of the web 13 of the other channel member with its terminal end locating within the longitudinal groove 14 to nest the two channel members 11 and 12.
  • the members 11, 12 are provided in a partially constructed form to allow for ease of nesting.
  • This "preform" version of the members 11 and 12 is illustrated in Fig. 5 and the nesting of the members is described below with reference to Fig. 6.
  • the members 11, 12 in their preform state are given the same reference numerals in the drawings but with the superscript (1) for ease of identification.
  • the preform members II 1 , and 12 1 have the same general configuration and features of the members 11 and 12, with the exception that the return 19 1 is more open (i.e. formed at an obtuse angle to flange 17 1 ) .
  • the member II 1 and 12 1 are able to be nested together in this state as the return 19 1 does not prevent lateral insertion of flange 16 1 of the other member.
  • these preforms II 1 and 12 1 are nested together, they are then clamped in place by closing of the returns 19 1 which locks in the individual web recesses 14 and thereby place the members 11 and 12 in there final configuration.
  • the members 11 and 12 are formed, typically by a roll forming process, with the flange groove 20.
  • a depth of the groove 20 By intermittent testing of the nested channel members to assess the amount of force required to telescope those members it is possible to set a depth of the groove 20 to a desired depth. If the force required is too great, the depth of the formation is increased which thereby reduces the overall dimension of the first flange. If the threshold force is too low, then the dimension of the first flange is increased by reducing the depth of the formation.
  • the structural assembly 10 is ideally suited for prefabricated construction.
  • the assembly 10 can be provided as a "standard item" and is provided in a slightly oversized form.
  • the required length of the member can be established, either by direct measurement or by calculation taking into account contingency factors such as material thickness and the like.
  • the structural assembly 10 can be simply resized on site quickly and efficiently by being placed in a press to allow the minor adjustment in length due to telescoping of the two members .

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Rod-Shaped Construction Members (AREA)

Abstract

L'invention concerne un ensemble structural (10) comprenant un premier élément (11) et un deuxième élément (12). Les éléments (11, 12) sont emboîtés l'un dans l'autre et sont agencés pour coulisser le long d'un axe A de l'ensemble (10) quand une force ou charge de seuil prédéterminée est exercée le long de l'axe. L'invention s'applique en particulier à des bâtiments préfabriqués et est conçue pour permettre de légers ajustements au niveau de la longueur de l'ensemble.
PCT/AU2009/000710 2008-06-04 2009-06-04 Ensemble structural réglable et procédé WO2009146502A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2008902828 2008-06-04
AU2008902828 2008-06-04

Publications (1)

Publication Number Publication Date
WO2009146502A1 true WO2009146502A1 (fr) 2009-12-10

Family

ID=41397643

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2009/000710 WO2009146502A1 (fr) 2008-06-04 2009-06-04 Ensemble structural réglable et procédé

Country Status (1)

Country Link
WO (1) WO2009146502A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3985083A (en) * 1971-11-05 1976-10-12 Ufficio Tecnico Ing. A. Mannucci Support structure
US4397127A (en) * 1980-09-22 1983-08-09 Donn, Incorporated Extendable stud for partition walls or the like
US5079884A (en) * 1990-06-04 1992-01-14 National Gypsum Company Extendible interconnected Z-studs
US5325651A (en) * 1988-06-24 1994-07-05 Uniframes Holdings Pty. Limited Wall frame structure
US5442885A (en) * 1994-04-15 1995-08-22 A. O. Smith Corporation Pre-assembly attachment system for a box-section frame member and method of assembling
US5464302A (en) * 1993-08-23 1995-11-07 National Gypsum Company Extendible interconnected C-studs
GB2303154A (en) * 1995-07-08 1997-02-12 Superior Sections Ltd Partition studs or similar supports

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3985083A (en) * 1971-11-05 1976-10-12 Ufficio Tecnico Ing. A. Mannucci Support structure
US4397127A (en) * 1980-09-22 1983-08-09 Donn, Incorporated Extendable stud for partition walls or the like
US5325651A (en) * 1988-06-24 1994-07-05 Uniframes Holdings Pty. Limited Wall frame structure
US5079884A (en) * 1990-06-04 1992-01-14 National Gypsum Company Extendible interconnected Z-studs
US5464302A (en) * 1993-08-23 1995-11-07 National Gypsum Company Extendible interconnected C-studs
US5442885A (en) * 1994-04-15 1995-08-22 A. O. Smith Corporation Pre-assembly attachment system for a box-section frame member and method of assembling
GB2303154A (en) * 1995-07-08 1997-02-12 Superior Sections Ltd Partition studs or similar supports

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