EP1187956B1 - System for fixing a structural element to the end of an upright tubular steel column and a method for producing the system - Google Patents

System for fixing a structural element to the end of an upright tubular steel column and a method for producing the system Download PDF

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Publication number
EP1187956B1
EP1187956B1 EP00942611A EP00942611A EP1187956B1 EP 1187956 B1 EP1187956 B1 EP 1187956B1 EP 00942611 A EP00942611 A EP 00942611A EP 00942611 A EP00942611 A EP 00942611A EP 1187956 B1 EP1187956 B1 EP 1187956B1
Authority
EP
European Patent Office
Prior art keywords
column
fixing
structural element
elongated member
extremity
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 - Lifetime
Application number
EP00942611A
Other languages
German (de)
French (fr)
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EP1187956A1 (en
Inventor
Willy Johansson
Anssi Lakomaa
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Individual
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Individual
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Publication of EP1187956A1 publication Critical patent/EP1187956A1/en
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    • 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
    • E04B1/2403—Connection details of the elongated load-supporting parts
    • 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
    • E04B1/2403—Connection details of the elongated load-supporting parts
    • E04B2001/2454—Connections between open and closed section profiles
    • 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
    • E04B2001/2478—Profile filled with concrete
    • 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
    • E04B2001/2484—Details of floor panels or slabs

Definitions

  • the present invention relates to a system for fixing a structural element to the end of an upright tubular steel column and a method for producing the device according to the pre-characterising parts of the independent claims 1 and 5.
  • fixing elements being used in the form, for example, of plates and/or reinforcing rods welded to the end of the column.
  • Welding means that rust protection and any other surface coatings on the column may be damaged, which means a risk of future corrosion damage and of stresses building up in the column.
  • welding is an operation that calls for special expertise and one in which quality assurance is difficult. It also carries a potential fire hazard. There are not normally any welders present on a building site, for example, so that welding will mean that a further trade category has to be called in for this particular work.
  • WO9012174 discloses a device and method for fixing a structural element to the end of an upright tubular beam, and for attaching a second tubular beam on the upper surface of the structural element, such that the first and second tubular beams are precisely aligned.
  • An object of the present invention is to produce a system and a method by means of which the above-mentioned disadvantages can be eliminated or at least reduced.
  • a system for fixing a structural element to the end of an upright tubular steel column is produced according to the characterising part of claim 1, whilst again according to the present invention a method of fixing a structural element to an end is created according to the characterising part of claim 5.
  • Preferred embodiments also have any or some of the characteristics specified in the subordinate claims.
  • FIG 1 denotes an upright, tubular steel column and 2 a structural element fixed to the steel column in accordance with the invention.
  • the upright tubular steel column is shown made up in the form of a square tube, but in an alternative embodiment is made of round tubing.
  • An elongated member 3, an example of the design shape of which is shown in figure 3, is used for fixing.
  • the said member comprises a substantially straight rod 3a and a plate 3b arranged at the bottom, and wires 3c arranged crosswise approximately at the middle of the rod for suspension and centring of the rod 3a in the steel column 1.
  • the columns are shown in cross-section along the centre and the wires 3c rest in triangular notches 8 with substantially straight sides, which meet at an angle, preferably on one side of the column, at a distance from the distal end of the column.
  • the notch 8 is formed from the distal end of the column 1 in the longitudinal direction of the column and results in a 10-90% reduction of the distal surface, preferably one of approximately 50%.
  • the notch 8 also serves as the space for the casting compound 4, which means full contact between the structural element and the column, even if sand, gravel or other material should be present in the space.
  • the increased size of the notch 8 also increases the surface of the column end, which means that the column fixing is capable of bearing an increased load.
  • the structural element is represented by an H-beam 2', which rests on the upper distal surface of the steel column.
  • a space bounded at the bottom and the sides is defined substantially by the plate 3b and the inside of the column.
  • a setting casting compound 4 intended to fix the rod 3 substantially centrally in the steel column I and to the structural element 2.
  • Beams 10, such as roof trusses, joist elements or prefabricated concrete beams, for example, running transversely to the H-beam are generally placed on the H-beam 2'.
  • the structural element is further exemplified in figure 2 by a cast slab 2", for example one of concrete for a floor in a multi-storey building.
  • the slab 2" largely corresponds to structural element in figure 1.
  • the setting casting compound of the slab 2" is joined, at an opening 5" passing through the load-spreading pad 6, to the casting compound in the aforementioned space bounded at the bottom and the sides, forming one unit.
  • the load-spreading pad also has parts, extending vertically and corresponding to the thickness of the cast slab 2", for operatively connecting the steel column, substantially by means of steel, to other steel structures located on the slab 2".
  • the column 1' of the next floor is connected to the structural element 2 from above.
  • An extremity of the first part of the elongated member 3 extends above the structural element 2 and forms part of the fixing for this column 1'.
  • the extremity of the member 3 is closely surrounded by a casting compound 4', which during fixing is retained in a space formed by the bottom end of the said column 1', the structural element 2 and a mould fixing collar 11 that abuts the structural element 2 and the column 1'.
  • a through-opening 9' in the column is arranged at a distance above the end of the column in order to allow casting compound 4' to be introduced into the space, and subsequently forms a passage for wires or pipes.
  • a facility for adjusting the column fixing along the upper surface of the structural element 2 is provided in that the extremity of the member 3 need not be situated in the middle of the bottom end of the column 1', since the inside of the column end 1' is many times greater than the extremity of the member 3, which provides a certain width tolerance.
  • the mould fixing collar 11 is designed to hold the columns 1 and 1' in the fixing position and to cover the notch, so that the casting compound 4 is retained in the space when fixing, and is used both above and below the structural element 2 when connecting the columns 1 and 1'.
  • the collar 11 is made of plastic or other material that can easily be fixed by means of nails or the like to the structural element 2 or the casting mould (not shown) for the structural element.
  • the collar 11 is furthermore designed with straight sides so that it can be aligned in relation to other collars (not shown) in the same plane.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Joining Of Building Structures In Genera (AREA)

Abstract

Device, and a method for producing the device, for fixing a structural element (2) to the upper end of an upright, tubular steel column (1). The device comprises an elongated member (3) with a first part of the length of the member outside the column and a second part inside the latter. In the second part there are means (3b) designed, together with the walls of the column (1), to define a space for a setting casting compound (4), which is intended to fix the member (3) in the column (1). At least the first part of the elongated member (3) is designed to achieve fixing of the structural element (2).

Description

The present invention relates to a system for fixing a structural element to the end of an upright tubular steel column and a method for producing the device according to the pre-characterising parts of the independent claims 1 and 5.
Such devices and methods of fixing are already known, fixing elements being used in the form, for example, of plates and/or reinforcing rods welded to the end of the column. Welding means that rust protection and any other surface coatings on the column may be damaged, which means a risk of future corrosion damage and of stresses building up in the column. Furthermore, welding is an operation that calls for special expertise and one in which quality assurance is difficult. It also carries a potential fire hazard. There are not normally any welders present on a building site, for example, so that welding will mean that a further trade category has to be called in for this particular work.
WO9012174 discloses a device and method for fixing a structural element to the end of an upright tubular beam, and for attaching a second tubular beam on the upper surface of the structural element, such that the first and second tubular beams are precisely aligned.
An object of the present invention is to produce a system and a method by means of which the above-mentioned disadvantages can be eliminated or at least reduced.
According to the present invention a system for fixing a structural element to the end of an upright tubular steel column is produced according to the characterising part of claim 1, whilst again according to the present invention a method of fixing a structural element to an end is created according to the characterising part of claim 5.
Preferred embodiments also have any or some of the characteristics specified in the subordinate claims.
The invention will be explained in more detail below with the aid of the drawing attached, the figures of which illustrate examples of embodiments of the device according to the present invention.
  • Figure 1 shows a column with a projecting, elongated member for fixing to a structural element in the form of a beam on which a joist element rests.
  • Figure 2 similarly to figure 1 shows the invention adapted to fixing a concrete slab to the column end and a column standing on the concrete slab.
  • Figure 3 shows a diagram in perspective view of one embodiment of an elongated member with centring wires and a plate in order to define a space in a tubular steel column.
  • Figure 4 shows a detailed perspective view of an upper column end.
    • In the drawing 1 denotes an upright, tubular steel column and 2 a structural element fixed to the steel column in accordance with the invention. In figure 4 the upright tubular steel column is shown made up in the form of a square tube, but in an alternative embodiment is made of round tubing. An elongated member 3, an example of the design shape of which is shown in figure 3, is used for fixing. The said member comprises a substantially straight rod 3a and a plate 3b arranged at the bottom, and wires 3c arranged crosswise approximately at the middle of the rod for suspension and centring of the rod 3a in the steel column 1. In the example embodiment according to figures 1 and 2 the columns are shown in cross-section along the centre and the wires 3c rest in triangular notches 8 with substantially straight sides, which meet at an angle, preferably on one side of the column, at a distance from the distal end of the column.
    The notch 8 is formed from the distal end of the column 1 in the longitudinal direction of the column and results in a 10-90% reduction of the distal surface, preferably one of approximately 50%. When the column 1 is placed on a plane surface, therefore, only parts of the original distal surface, preferably at the four corners of the column, will have contact with the plane surface, which reduces the possibility of sand, gravel and other material getting between the distal surface and the plane surface, which might give the column 1 an angle error. The notch 8 also serves as the space for the casting compound 4, which means full contact between the structural element and the column, even if sand, gravel or other material should be present in the space. The increased size of the notch 8 also increases the surface of the column end, which means that the column fixing is capable of bearing an increased load.
    In the example embodiment according to figure 1 the structural element is represented by an H-beam 2', which rests on the upper distal surface of the steel column. A space bounded at the bottom and the sides is defined substantially by the plate 3b and the inside of the column. In the space bounded at the bottom and the sides is a setting casting compound 4, intended to fix the rod 3 substantially centrally in the steel column I and to the structural element 2. Beams 10, such as roof trusses, joist elements or prefabricated concrete beams, for example, running transversely to the H-beam are generally placed on the H-beam 2'.
    The structural element is further exemplified in figure 2 by a cast slab 2", for example one of concrete for a floor in a multi-storey building. The slab 2" largely corresponds to structural element in figure 1. Between the slab 2" and the column 1 there is a load-spreading pad 6, the function of which is to distribute forces in the cast slab 2", which is preferably reinforced with reinforcing rods 7. The setting casting compound of the slab 2" is joined, at an opening 5" passing through the load-spreading pad 6, to the casting compound in the aforementioned space bounded at the bottom and the sides, forming one unit. In a further embodiment (not shown) the load-spreading pad also has parts, extending vertically and corresponding to the thickness of the cast slab 2", for operatively connecting the steel column, substantially by means of steel, to other steel structures located on the slab 2".
    In the above-mentioned floor in a multi-storey building the column 1' of the next floor is connected to the structural element 2 from above. An extremity of the first part of the elongated member 3 extends above the structural element 2 and forms part of the fixing for this column 1'. The extremity of the member 3 is closely surrounded by a casting compound 4', which during fixing is retained in a space formed by the bottom end of the said column 1', the structural element 2 and a mould fixing collar 11 that abuts the structural element 2 and the column 1'. A through-opening 9' in the column is arranged at a distance above the end of the column in order to allow casting compound 4' to be introduced into the space, and subsequently forms a passage for wires or pipes. A facility for adjusting the column fixing along the upper surface of the structural element 2 is provided in that the extremity of the member 3 need not be situated in the middle of the bottom end of the column 1', since the inside of the column end 1' is many times greater than the extremity of the member 3, which provides a certain width tolerance. The mould fixing collar 11 is designed to hold the columns 1 and 1' in the fixing position and to cover the notch, so that the casting compound 4 is retained in the space when fixing, and is used both above and below the structural element 2 when connecting the columns 1 and 1'. The collar 11 is made of plastic or other material that can easily be fixed by means of nails or the like to the structural element 2 or the casting mould (not shown) for the structural element. The collar 11 is furthermore designed with straight sides so that it can be aligned in relation to other collars (not shown) in the same plane.

    Claims (7)

    1. System for fixing a structural element (2) to the end of an upright, round or square tubular steel column (1), the system comprising the column (1), the structural member (2), a second column (1'), a setting casting compound (4), and an elongated member (3) with a first part of the length of the member outside the column and a second part inside the column (1), that in the column there are means (3b) designed, together with the walls of the column (1), to define a space open at the top for the setting casting compound (4), intended for fixing the second part of the member (3) in the column (1), at least the aforementioned first part of the elongated member (3) being designed to achieve fixing of the structural element (2), whereby an extremity of the first part of the elongated member (3) is designed to extend above the structural element (2), so as to form part of a fixing of the second column (1'),
      characterized in that
         the inside of a lower end of the second column (1') is many times greater than the extremity (3a) of the first part (3) of the elongated member, whereby said extremity (3a) of said first part (3) is positionable in an arbitrary position in a plane perpendicular to, and within the lower end of, the second column (1'), to provide a facility for adjusting the fixing of the second column (1') along an upper surface of the structural element (2).
    2. System according to claim 1, characterised in that the casting compound (4) in the space is connected to a casting compound outside the column (1)
    3. System according to either of the preceding claims, characterised in that means (3c and 8) are provided for centring the second part of the elongated member (3) in the column (1).
    4. System according to any of the preceding claims, characterised in that the elongated member (3) is operatively connected to the means (3b) designed, together with the walls of the column (1), to define the space.
    5. A method for fixing a structural element (2) to the end of an upright, round or square tubular steel column (1), the method comprising
         defining a space in the end of the column (1),
         arranging an elongated member (3) in the space with a first part of the length of the member (3) outside the column and a second part in the space, such that an extremity of a first part of the elongated member (3) extends above the structural element (2), so as to form part of a fixing of a second column (1'),
         filling the space with casting compound (4),
         fixing the member (3) by setting of the casting compound (4),
         fixing the structural member to at least the first part of the elongated member (3),
      characterized by
         arranging an inside of a lower end of a second column (1') around the extremity (3a) of the first part of the elongated member, whereby, due to the inside of the lower end of the second column being many times greater than the extremity of the first part of the elongated member, said extremity (3a) of said first part is positionable in an arbitrary position in a plane perpendicular to, and within the lower end of, the second column (1'), to provide a facility for adjusting the fixing of the second column (1') along an upper surface of the structural element (2).
    6. Method according to claim 5, characterised in that a further upright, tubular steel column on top of the structural element (2) is fixed by means of a casting compound to an extremity of the first part of the member (3).
    7. Method according to any of claims 5 or 6, characterised in that a load-distributing pad (6) is placed on the steel column tube (1).
    EP00942611A 1999-06-18 2000-06-15 System for fixing a structural element to the end of an upright tubular steel column and a method for producing the system Expired - Lifetime EP1187956B1 (en)

    Applications Claiming Priority (3)

    Application Number Priority Date Filing Date Title
    SE9902312A SE514423C2 (en) 1999-06-18 1999-06-18 Device for attaching a component to the end of a standing tubular steel pillar and a method for providing the device
    SE9902312 1999-06-18
    PCT/SE2000/001245 WO2000079064A1 (en) 1999-06-18 2000-06-15 Device for fixing a structural element to the end of an upright tubular steel column and a method for producing the device

    Publications (2)

    Publication Number Publication Date
    EP1187956A1 EP1187956A1 (en) 2002-03-20
    EP1187956B1 true EP1187956B1 (en) 2005-11-23

    Family

    ID=20416140

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP00942611A Expired - Lifetime EP1187956B1 (en) 1999-06-18 2000-06-15 System for fixing a structural element to the end of an upright tubular steel column and a method for producing the system

    Country Status (8)

    Country Link
    EP (1) EP1187956B1 (en)
    AT (1) ATE310858T1 (en)
    AU (1) AU5721100A (en)
    DE (1) DE60024263T2 (en)
    DK (1) DK1187956T3 (en)
    PL (1) PL352166A1 (en)
    SE (1) SE514423C2 (en)
    WO (1) WO2000079064A1 (en)

    Family Cites Families (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    SE466112B (en) * 1989-04-05 1991-12-16 Joergen Thor DEVICE OF A COOPERATOR AND SATISFACTION OF MANUFACTURING A SOFT DEVICE
    JP2645365B2 (en) * 1990-02-22 1997-08-25 清水建設株式会社 Beam-column joint
    US5195293A (en) * 1990-03-15 1993-03-23 Digirolamo Edward R Structural system for supporting a building utilizing light weight steel framing for walls and hollow core concrete slabs for floors and method of making same

    Also Published As

    Publication number Publication date
    DE60024263D1 (en) 2005-12-29
    EP1187956A1 (en) 2002-03-20
    AU5721100A (en) 2001-01-09
    DE60024263T2 (en) 2006-08-24
    SE514423C2 (en) 2001-02-19
    WO2000079064A1 (en) 2000-12-28
    DK1187956T3 (en) 2006-04-03
    SE9902312L (en) 2000-12-19
    SE9902312D0 (en) 1999-06-18
    ATE310858T1 (en) 2005-12-15
    PL352166A1 (en) 2003-07-28

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