WO2018039724A1 - Système de liaison - Google Patents

Système de liaison Download PDF

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Publication number
WO2018039724A1
WO2018039724A1 PCT/AU2017/050930 AU2017050930W WO2018039724A1 WO 2018039724 A1 WO2018039724 A1 WO 2018039724A1 AU 2017050930 W AU2017050930 W AU 2017050930W WO 2018039724 A1 WO2018039724 A1 WO 2018039724A1
Authority
WO
WIPO (PCT)
Prior art keywords
construction element
connector
connection system
bracket
connectors
Prior art date
Application number
PCT/AU2017/050930
Other languages
English (en)
Inventor
Paul GLADMAN
Original Assignee
Gladman Paul
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
Priority claimed from AU2017900772A external-priority patent/AU2017900772A0/en
Application filed by Gladman Paul filed Critical Gladman Paul
Publication of WO2018039724A1 publication Critical patent/WO2018039724A1/fr

Links

Classifications

    • 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
    • E04B1/26—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of wood
    • E04B1/2604—Connections specially adapted therefor
    • 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
    • E04B1/26—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of wood
    • E04B1/2604—Connections specially adapted therefor
    • E04B2001/2628—Interlocking connectors, e.g. with hooks or dovetails, added to the elongated wooden members
    • E04B2001/2636—Interlocking connectors, e.g. with hooks or dovetails, added to the elongated wooden members with connectors located in slots of the wooden members
    • 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
    • E04B1/26—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of wood
    • E04B1/2604—Connections specially adapted therefor
    • E04B2001/2644—Brackets, gussets or joining plates
    • E04B2001/2648—Brackets, gussets or joining plates located in slots of the elongated wooden members
    • 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
    • E04B1/26—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of wood
    • E04B1/2604—Connections specially adapted therefor
    • E04B2001/2652—Details of nailing, screwing, or bolting
    • 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
    • E04B1/26—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of wood
    • E04B1/2604—Connections specially adapted therefor
    • E04B2001/2676—Connector nodes

Definitions

  • This invention relates generally to the field of building construction.
  • the invention relates to a connection system for building construction components.
  • the present invention is suitable for use in modular building systems, such as those utilising laminated veneer lumber.
  • connection system for modular building systems
  • present invention is not limited to that use only and can be applied to a wide range of building materials and building systems.
  • Laminated veneer lumber is one of the most widely used high strength engineered wood products for construction applications. It is relatively versatile and is used for permanent structural applications such as beams, lintels, purlins, truss chords and formwork. In timber frame construction, LVL construction elements such as beams need to be connected to posts to support flooring frames or wall frames.
  • LVL is a composite product manufactured by bonding together multiple thin layers of wood veneers under heat and pressure. Prior to lamination, the veneers are dried and the grains of each veneer are oriented in the same direction. This makes LVL stronger, straighter and more uniform than solid timber and overcomes some of timber's natural limitations such as strength- reducing knots, and being limited to the length of the tree logs available. Due to its composite nature, LVL is much less likely than conventional lumber to warp, twist, bow, or shrink. In contrast to materials such as plywood, this gives different mechanical properties against different axes.
  • LVL low-density lipoprotein
  • Laminated beams are engineered timber products that are quite different to solid sawn timber when being cut or modified in any way. This is particularly important in the connection of posts and beams as incorrect connections may reduce the capacity of a beam and cause serious structural failure.
  • the notching of LVL beams not only decreased the effective section of the member in the location of notch but also creates stress concentrations in what is already a highly stressed beam. These stress concentrations make the beam prone to splitting.
  • any drilling, tapering or notching that takes place in LVL reduces the net section and may introduce stress concentrations at the notching or drilling location.
  • connection system for building construction components could be devised that helped to at least ameliorate some of the shortcomings described above.
  • connection systems suitable for use in modular building systems, such as those utilising laminated veneer lumber was devised or to at least provide a useful alternative.
  • connection system provides a cost efficient assembly of construction elements such as posts and beams in the assembly of ground floor structures, foundation platforms or whole buildings.
  • the present invention provides a connection system for connecting construction elements, the system comprising: a first connector and a second connector, each connector comprising: a first elongate member having a first longitudinal axis terminating at a first end and a second end; a second elongate member having a second longitudinal axis terminating at a third end and a fourth end, the first elongate member being connected to the second elongate member such that the second longitudinal axis is coplanar with, and transects the first longitudinal axis; and wherein the first connector and the second connector are located within a first construction element; a bracket comprising: a planar member having at least two loci for attaching the planar member to an end of a second construction element; an annular flange having a longitudinal axis perpendicular to the planar member; and wherein the planar member and annular flange cooperate to direct a sheer force toward the centre of the second construction element; and wherein the bracket is
  • the corresponding first, second, third and fourth ends of the first and second connectors may be adapted to cooperate respectively with the second construction elements.
  • the first connector and the second connector may be spaced apart a distance within the first construction element.
  • the spaced apart distance of the first and second connectors may align an end of the first connector with one of the at least two loci of the planar member of the bracket and a corresponding end of the second connector with the other one of the at least two loci of the planar member of the bracket.
  • first and second longitudinal axes of the first and second connectors may transect at a perpendicular angle.
  • the first and second elongate members of the first and second connectors may be cylindrical in cross section.
  • the first and second elongate members of the first and second connectors may be square, rectangular or triangular in cross section or any other desired cross- sectional shape.
  • the first elongate member may be cylindrical in shape and includes a transverse opening for receiving the second elongate member.
  • the second elongate member may comprise a first cylindrical part having a threaded body which is received in the transverse opening of the first elongate member and a second part having an internally threaded cylindrical body adapted to receive the threaded body of the first part, the first and second parts of the second elongate member being in removable connection with the first elongate member.
  • first, second, third and fourth ends of the first and second connectors may have an internally threaded cylindrical body.
  • the first construction element may comprise two sets of coplanar machined bores which transect at a perpendicular angle to form two four-way through bores which are adapted to receive the first and second connectors.
  • At least one of the corresponding ends of the first and second connectors may further comprise a locating washer inserted into each respective through bore with one end in an abutting relationship with the end of the connector and another end of the locating washer projecting from an outer surface of the first construction element to act as a location guide for the second construction element.
  • the first construction element may have a square cross- section with corresponding ends of the first and second connectors aligned on each face of the first construction element.
  • the first construction element may be adapted to receive up to four second construction elements, an end of each second construction element abutting against a face of the first construction element.
  • the planar member of the bracket may be an elongate metal strip, having upper and lower edges and a front and a back located between the upper and lower edges.
  • the annular flange may project from the back of the planar member.
  • an end of the second construction element may have a recess adapted to receive the bracket.
  • the recess may be adapted to receive the locating washers projecting from the outer surface of the first construction element.
  • the planar member may comprise a first loci adjacent the upper edge and a second loci adjacent the lower edge. Each loci may comprise a hole in the planar member through which passes a fastener for connecting the bracket to the second construction element and the second construction element to the first construction element.
  • Each fastener may be received within a hole extending longitudinally in the second construction element and one end of each fastener being received into a corresponding end of the first or second connector, the other end of each fastener being secured to the second construction element.
  • the fastener may be a threaded fastener and the other end of threaded fastener is secured to the second construction element by at least one nut.
  • the fastener may further comprise a washer plate between the threaded fastener and the at least one nut securing the second construction element.
  • the first construction element may be adapted to receive one second construction element with the end of the second construction element abutting against a first face of the first construction element, a second face of the first construction element opposing the first face has a recess around the corresponding first and second connectors for receiving a washer plate.
  • the washer plate may be secured to the first and second connectors ends by a threaded fastener and securing nut.
  • the first construction element may be a post and the second construction element is a beam.
  • the beam and/or post may be formed from an engineered wood product.
  • the engineering wood product may be a laminated veneer lumber.
  • the present invention provides a method of connecting a first construction element to a second construction element, the method comprising the steps of: forming two spaced apart first recesses and two second, intersecting recesses in a first construction element; locating a first connector and a second connector in the first and second recesses in the first construction element, each connector providing a connecting end in a first surface of the first construction element; positioning a locating washer in the connecting ends of the first and second connectors, with one end of the locating washer in an abutting relationship with the end of the connectors and another end of the locating washer projecting from the first surface of the first construction element; locating a bracket in an end of a second construction element, the bracket comprising a planar member having at least two loci aligned with two elongate holes in the second construction element and an annular flange having a longitudinal axis perpendicular to the planar member; positioning the second construction element over the locating washers in the first construction element such that the
  • the first and second connectors may comprise any one of the features of the connectors described in the first aspect.
  • the bracket may comprise and one of the features of the bracket described in the first aspect.
  • the step of locating a bracket in the end of a second construction element may further comprise the step of providing a recess adjacent the end of the second construction element in which the bracket may be located.
  • the first and second recesses may comprise two intersecting bore holes drilled between opposing faces of the first construction element, the first construction element having a square cross-section. A longitudinal axis of each of the bore holes may be coplanar and perpendicular.
  • the positioning of second construction elements on the square cross-section of the first construction element may provide connection for up to four second construction elements, an end of each second construction element abutting against a face of the first construction element.
  • the step of providing a securing device to secure the second construction element to the first construction element may further comprise providing a washer plate between the fastener and the securing device.
  • the first construction element may be a post
  • the second construction element may be a beam.
  • the beam and/or post may be formed from an engineered wood product.
  • the engineering wood product may be a laminated veneer lumber. Any one or more of the above embodiments or preferred features can be combined with any one or more of the above aspects.
  • Fig. 1 shows a side on sectional view of an LVL beam and post connected using the connection system in accordance with an embodiment of the present invention
  • Fig. 2 shows a perspective view of a bracket in accordance with an embodiment of the present invention
  • Fig. 3 illustrates a perspective view of an end part of an LVL beam in accordance with an embodiment of the present invention
  • Fig. 4 shows a sectional view of the end of the LVL beam of Fig. 3;
  • Fig. 5 illustrates an end of an LVL beam showing the end part of Fig. 3 installed in between two LVL beam sections;
  • Fig. 6 shows the bracket of Fig. 2 and the end part of Fig. 3 prior to the bracket being installed into the end part;
  • Fig. 7 shows the bracket installed into the end part in accordance with an embodiment of the present invention
  • Fig. 8 shows a sectional perspective view of the bracket and end part of
  • Fig. 9 shows an end view of the LVL beam of Fig. 5;
  • Figs 10 and 1 1 illustrate a connector in accordance with an embodiment of the present invention with the connector in the disassembled form in Fig. 1 0 and in the assembled form in Fig. 1 1 ;
  • Fig. 1 2 shows two connectors installed in an LVL post with one face of the post showing the locating washers installed;
  • Fig. 13 illustrates a cross sectional view of the post of Fig. 12;
  • Figs. 14 and 1 5 show the post with two connectors installed in bore holes drilled in the post with locating washers just prior to installation in Fig. 14 and with the locating washers in an abutting relationship with the ends of the connectors in Fig. 15;
  • Fig. 16 and 1 7 shows an LVL beam and post connected using the connection system in cross sectional views from an angle in Fig. 1 6 and from the side as viewed in Fig. 1 7;
  • Fig 18 shows a bracket installed on a post using fasteners to hold the bracket in place with the beam removed to provide clarity of the underlying structure
  • Figs 19 to 23 illustrate a beam connected to a post using the connection system in accordance with an embodiment of the present invention
  • Figs. 24 and 25 illustrates the connection of three beams to one post using the connection system in accordance with an embodiment of the present invention.
  • Figs. 26 and 27 illustrate a further embodiment of the present invention which is adapted for longer clear spans using the connection system of the present invention.
  • connection system has been designed due to the realisation that a simple, but robust connection system can be provided to join large construction elements such as beams and posts, such that in use a moment or turning effect of a force is allowed to continue through the post to the opposite side of a corresponding beam.
  • the connection system also ensures that degradation of construction elements such as splitting or delamination at their ends, can be ameliorated or overcome by redirecting deleterious shear forces away from the edges of the elements, preferably towards the centre of the construction element.
  • connection system 1 0 for connecting construction elements 1 1 , 1 2 such as posts and beams in a quick and simple manner with the use of minimal tooling with increased clear span capabilities.
  • the system comprises first and second bi-directional connectors 20 and the bracket 40.
  • Each connector 20 has a first elongate member 21 having a first longitudinal axis terminating at a first end 23 and a second end 24.
  • a second elongate member 25, 26 has a second longitudinal axis terminating at a third end 27 and a fourth end 28.
  • the first elongate member 21 is connected to the second elongate member 25, 26 such that the second longitudinal axis is coplanar with, and transects the first longitudinal axis.
  • the first and second connectors 20 are located within a first construction element 1 1 .
  • the bracket 40 has been designed to direct a sheer force toward the centre of the second construction element 1 2.
  • the bracket 40 has a planar member 41 and an annular flange 48.
  • the planar member 41 has at least two loci 44 for attaching the planar member 41 to an end of a second construction element 12.
  • the annular flange 48 having a longitudinal axis perpendicular to the planar member 41 .
  • the planar member 41 and annular flange 48 cooperate to direct a sheer force toward the centre of the second construction element 12.
  • the bracket 40 is adapted to be connected to the first and second connectors 20 to connect the first and second construction elements 1 1 , 12.
  • Fig. 1 illustrates the connection system 10 used to connect a post 1 1 to a beam 12. While the present invention will be described and illustrated using structural components manufactured from engineered wood products such as laminated veneer lumber (LVL) or glued laminated timber (Glulam), the present invention is not only limited to these engineered wood products. The present invention can also be utilised with structural timbers such as hardwood and the like which are strong, durable and able to carry loads. The rating and profile of structural components relies most importantly on spans and loadings.
  • LDL laminated veneer lumber
  • Glulam glued laminated timber
  • the laminated veneer lumber (LVL) illustrated in Fig. 1 is used in the post 1 1 and the beam 12.
  • the LVL post 1 1 may be constructed for example from multiple layers (4 x 45 mm) of LVL cold pressed together to form a 180 mm x 180 mm cross section and cut to the required height.
  • the LVL beam 12 consists of an LVL block 50 and two LVL beams 1 5 (nominally, for example 45 mm x 300 mm beams).
  • the LVL block 50 for use in the present invention may be of any convenient size, for example 270 mm x 300 mm x 90 mm.
  • the LVL block 50 is cold pressed between the two LVL beams 15 to form the LVL beam 12.
  • a single beam 12 is attached to the post 1 1 .
  • the LVL block 50 is located within an end of the LVL beam 12 and has a recess 53 machined into the block body 51 designed to receive the bracket 40.
  • the recess 53 also allows the locating washers 30 positioned in the ends of the connectors 20 to act as a locating guide for the beam 12 and subsequent fasteners 70.
  • Fasteners 70 shown as threaded bolts pass through longitudinal extending holes 55 in the LVL block body 51 and through two loci 44 located in the bracket 40. The fasteners 70 extend into an end of the connector 20 and are secured into the connector 20 by driving the end 71 to screw the fastener 70 into place.
  • connection to the post 1 1 on the opposite side of the connectors 20 includes a washer plate 60 received within a recess in the post 1 1 and is secured by fasteners 75, 80.
  • Figs. 2 to 9 show further details of the bracket 40, the LVL black 50 and the LVL beam 12.
  • Fig. 2 illustrates a bracket 40 according to an embodiment of the present invention.
  • the planar member 41 in the form of a plate (nominally 40 mm x 1 0 mm x 240 mm) washer plate, two loci 44 in the form of holes for attaching the planar member 41 to a second construction element 12, and an annular flange 48 in the form of a metal pipe section (nominally 5.5 mm, 90 mm diameter).
  • the planar member 41 of the bracket 40 is an elongate metal strip having upper and lower edges 46, 47 with a front 42 and back 43 separated between the upper and lower edges 46, 47.
  • the first loci 44 is located adjacent the upper edge 46 and a second loci 44 is located adjacent the lower edge 47 of the planar member 41 .
  • Each loci 44 comprises a hole in the planar member 41 through which passes a fastener 70 for connecting the bracket 40 to the LVL beam 12.
  • the longitudinal axis of the annular flange 48 is perpendicular to the planar member 41 .
  • the bracket 40 is of unitary construction with the planar member 41 welded to the annular flange 48.
  • Figs. 3 and 4 show the LVL block 50 for use in the present invention in perspective view Fig. 3 and sectional view Fig. 4.
  • the block 50 may be of any convenient size, for example 270 mm x 300 mm x 90 mm.
  • the block body 51 has an end 52 which has been modified by machining such as using a router to include a recess 53 configured to receive the bracket 40 of the present invention.
  • the recess 53 may include a circular rebate 56 (nominally of 90 mm diameter) followed by a rebated circle 57 (90 mm diameter, 7 mm wide and 50 mm deep) cut into the end grain of the LVL connection block body 51 .
  • the bottom end 54 of the recess 53 is open to allow the beam 12 to slide over the locating washers 30 in the post 1 1 to facilitate the installation of the beam 12 to the post 1 1 .
  • LVL block body 51 at a first locus and second locus to receive a threaded bolt 70 (for example an M16 threaded bolt) or other means for connecting the bracket 40 to the LVL block 50.
  • the holes 55 are for example, 18 mm diameter holes drilled right through the block body 51 (in the 270 mm direction) positioned approximately 50 mm centre/centre from the top and 200 mm c/c apart.
  • Fig. 5 shows the LVL block 50 and two LVL beams 1 5 (nominally, for example 45 mm x 300 mm beams) to form the LVL beam 12.
  • Figs. 6 to 8 illustrate the bracket 40 and the LVL block 50 with the bracket positioned for insertion into the block 50 shown in Fig. 6 and located within the recess 53 cut into the end 52 of the LVL block 50 as shown in Fig 7 and the section view Fig. 8 respectively.
  • a connection means 70 such as a threaded bolt can be passed through the bracket 40 and into the end of the LVL block 50. In such a manner, sheer force is redirected towards the centre of the beam 12 to resist delamination of the LVL block 50.
  • Fig. 8 shows a section view of the LVL block 50 with the bracket 40 positioned in the recess 53.
  • the two loci 44 of the bracket 40 are aligned with the longitudinally extending holes 55 in the LVL block body 51 .
  • the annular flange 48 of the bracket 40 is positioned within the rebated circle 57 and the back side 43 of the planar member 41 rests against the recess 53 and the bottom of the circular rebate 56.
  • Fig. 9 illustrates an end view of the LVL beam 12 with the LVL block 50 and the bracket 40 installed within the recess 53 and the two LVL beams 1 5 surrounding the LVL block 50. From this view the annular flange 48 is located within the rebated circle 57 and the front side 42 of the planar member 41 is shown with the two loci 44 of the bracket 40.
  • Figs. 10 and 1 1 illustrate a connector 20 according to the present invention in disassembled form Fig. 10 and assembled form Fig. 1 1 .
  • the embodiment of the connectors 20 show a first cylindrical elongate member 21 consisting of a single 140 mm x 39 mm diameter grade 8.8 steel tube, provided with a transverse M16 threaded hole 22 and 25 mm deep M16 threaded holes (not shown) drilled at the first end 23 and second end 24 respectively.
  • the second cylindrical elongate member 25, 26 comprises two components, a first part 25 having a threaded bolt 29 which can be inserted into the transverse M16 threaded hole 22 of the first elongate member 21 and a second part 26 which also receives the threaded bolt 29 within the threaded hole (not shown) drilled in the third end 27 of the second part 26.
  • the third end 27 and the fourth end 28 comprise steel cylinders 25, 26 formed from 50 mm x 39 mm diameter gauge 8.8 steel tube with M16 threaded holes through the centre which are in threaded engagement with the ends of the bolt 29.
  • first and second longitudinal axes of the first and second connectors 20 transect at a perpendicular angle.
  • first elongate member 21 has a longitudinal axis and the second elongate member 25, 26 has a longitudinal axis which transect or are formed at right angles.
  • Figs. 1 2 to 15 show an LVL post 1 1 with a square cross section showing four faces.
  • An LVL post 1 1 of the type shown in Fig. 12 may be constructed for example from multiple layers (4 x 45 mm) of LVL cold pressed together to form a 1 80 mm x 180 mm cross section and cut to the required height.
  • At each required beam junction 2 x 40 mm diameter holes spaced apart are predrilled in a factory at 200 mm c/c apart on the faces of the post resulting in a 4 way through bore.
  • the bores are sized to receive the bi-directional connector 20 according to the present invention which may be factory installed at these holes.
  • locating washers 30 Inserted in one face of the post 1 1 are two locating washers 30 which are received within the bores and abut against an end 23, 24, 27, 28 of the connector 20, the locating washers 30 extend from the surface of the post 1 1 and serve a dual purpose of (i) transferring the shear from the post 1 1 to a beam 12, and (ii) acting as a location guide for the beam 1 2 and subsequent bolts 70.
  • Fig. 1 3 illustrates a cross-sectional view of the post of Fig. 12 showing the connectors 20 of Figs. 1 1 and 12 in position in the post 1 1 , the connectors 20 allow the moment or turning effect of the force to continue through the post 1 1 to the opposite side of the post 1 1 to either a corresponding beam 12 or washer plate 60.
  • a single post 1 1 may have up to four beams 1 2 respectively located on the post 1 1 with a beam 12 located on each face of the post 1 1 . Where no beam 12 is located on a corresponding opposite end of the connector 20 a washer plate 60 is mounted within a recess in the post 1 1 .
  • a locating washer 30 in the form of a 40 mm long 40 mm diameter grade 8.8 steel tube with an 18 mm diameter smooth bore hole, is tapped into each 20 mm recess provided in the bore holes in the post 1 1 .
  • the connector ends 23, 24 are shown in section to illustrate the threaded holes 29 within the ends 23, 24.
  • the ends 27, 28 also have similar threaded holes 29 for receiving a corresponding fastener 70, 75.
  • Figs. 14 and 1 5 illustrate the post 1 1 installed on pad 1 3 which could in use form the post of a floor frame.
  • Figs. 1 6 and 17 show a preferred embodiment of the connection system
  • the beam 12 has been rebated or recessed with a corresponding slot 53 which allows it to slide over the location washers 30 and be located in the correct position during assembly.
  • This arrangement also has the advantage of being self-supporting while fasteners or anchor bolts 70 are installed and tightened.
  • the location and self-support are particularly beneficial features of the connection system 1 0 and connection method of the present invention.
  • the end of the beam 12 includes a bracket 40 of the type described in Figs. 6 to 9.
  • the bracket 40 includes a planar member 41 having at least two loci 44 for attaching the planar member 41 to the end 52 of the beam 12, and an annular flange 48 having a longitudinal axis perpendicular to the planar member 41 .
  • the planar member 41 and annular flange 48 cooperate to direct a sheer force toward the centre of the beam 1 2.
  • a M16 grade 8.8 threaded anchor bolt 70 with a 10 mm squared off end 71 is slid through the 1 8 mm predrilled holes 55 in the LVL block body 51 and subsequently through the loci hole 44 in the bracket 40.
  • the anchor bolt 70 then extends through the locating washers 30 and is screwed in tight to the threaded hole 29 in the end 24 of the connector 20 in the post 1 1 .
  • each beam 12 has two anchor bolts 70 for attachment to the post 1 1 .
  • the anchor bolts 70 are screwed, for example by an impact driver and 10 mm socket.
  • a threaded bolt 75 is also screwed in the other threaded hole 29 in the other end 23 of the connector 20.
  • a 250 mm x 75 mm x 8 mm washer plate 60, 65 is located in position single M16 nut 80 is then fastened onto each of the bolts 70, 75 and tightened, for example, using an impact driver and socket to about 80 Nm Torque. Once tight a second M16 nut 80 is tightened on to each anchor bolt 70 to act as a secondary locking nut.
  • connection system 1 0 provides rapid and simple connection on site. It can utilise as few as three standard parts such as a threaded bolts 70 and 75, washer plate 60 and 65 and M16 nuts 80 and it only requires minimal tools, such as a ratchet gun and 1 0 mm, 24 mm sockets.
  • Connection to all beams 1 2 can be achieved by repeating the method described to achieve four-way connection on the post 1 1 .
  • a 90 mm x 300 mm x 10 mm washer plate 60 can be bolted against the post 1 1 .
  • a recess (not shown) in the post 1 1 is rebated to receive the washer plate 60.
  • connection system 10 and method of connection works on beam lengths up to and including the 4.8 m clear span. Clear spans between 4.8 and 6 metres can be achieved by minimal change to the aforementioned method.
  • the LVL block 50 can be re-dimensioned to a 270 mm x 400 mm x 90 mm block and the CNC machining remains the same.
  • the side beams 15 can be re-dimensioned to 400 mm x 45 mm x length to form the larger beams 12.
  • Fig. 18 illustrates the placement of the bracket 40 on the anchor bolts 70 with the beam 12 and LVL block 50 removed for clarity. In this position the annular flange 48 is shown welded to the back 43 of the planar member 41 .
  • the anchor bolts 70 pass through the loci holes 44 in the bracket 40 and into the locating washers 30 mounted in the post 1 1 .
  • Figs. 19 to 23 illustrate the assembly of a single beam 12 to a post 1 1 .
  • the beam 1 2 has the LVL block 50 cold pressed between the LVL beams 1 5 and is placed over the locating washers 30 in the post 1 1 .
  • a washer plate 60 is secured to the post 1 1 .
  • Fig. 21 shows the anchor bolts 70 which are used to secure the beam 12 to the post 1 1 being located within the longitudinal extending holes 55 in the LVL body 51 within the LVL block 50.
  • Fig. 20 shows the anchor bolts 70 which are used to secure the beam 12 to the post 1 1 being located within the longitudinal extending holes 55 in the LVL body 51 within the LVL block 50.
  • the square end 71 of the anchor bolt 70 is driven into the threaded ends of the connector 20 to secure the anchor bolt to the post 1 1 and washer plate 65 is installed over the ends of the anchor bolts 70.
  • nuts 80 are threaded and secured to the end of the anchor bolts 70 to secure the beam 1 2 to the post 1 1 .
  • Figs. 24 and 25 illustrate the connection of three beams 1 2 to a single post 1 1 using the connecting system 1 0 of the present invention.
  • Each beam 12 is slid down over the locating washers 30 on each side of the post 1 1 and as previously described are secured to the post 1 1 using the fastener 70, the washer plate 65 and the locking nuts 80.
  • Fig. 25 also shows the side of the post 1 1 which does not have a corresponding beam 1 2 extending from the opposite side has a washer plate 60 secured to the connectors 20 by anchor bolts 75 and nuts 80.
  • Figs 26 and 27 illustrate a further embodiment of the present invention in which the connecting system 10 is adapted for longer clear spans.
  • a revision is made to the top connector M16 threaded bolt 70 and in place of fixing and locking nuts 80, a 20 mm deep coil spring 90 is slid over the end of the threaded bolt 70 and a locking nut 80 is wound on to hand tightness as illustrated in Fig. 26 and in greater detail in Fig. 27.
  • This unique feature facilitates a degree of flexibility in the joint to prevent over stressing the post 1 1 under extreme loads. While this invention has been described in connection with specific embodiments thereof, it will be understood that it is capable of further modification(s).
  • embodiments of the present invention stem from the realisation that a simple, but robust connecting system can be provided to join large construction elements such as beams and posts, such that a moment or turning force is allowed to continue through the post to the opposite side of a corresponding beam.
  • the bracket of the present invention is designed to direct shear force between the attachment loci and distribute it towards the centre of the block.
  • Shear forces are unaligned forces pushing one part of a body in one direction and another part of a body in the opposite direction.
  • materials such as LVL shear force acting in a direction perpendicular to its length can result in delamination.
  • embodiments of the present invention stem from the realisation that degradation of construction elements such as splitting or delamination at their ends, can be ameliorated or overcome by redirecting deleterious shear forces away from the edges of the elements, preferably towards the centre of the building element.
  • the advantages of the connecting system provides the ability to connect structural components with clear spans of over 4.5 metres through the combination of connectors mounted within a post and a bracket rebated into an end of a beam.
  • connection system has been designed to provide a simple, but robust connection system can be provided to join large construction elements such as beams and posts.
  • the connection system also ensures that degradation of construction elements such as splitting or delamination at their ends, can be ameliorated or overcome by redirecting deleterious shear forces away from the edges of the elements, preferably towards the centre of the construction elements.
  • the combination of the connectors, bracket and locating washers allows a beam which has been rebated or recessed with a corresponding slot to slide over the location washers and be located in the correct position during assembly.
  • This arrangement also has the advantage of being self-supporting while fasteners or anchor bolts are installed and tightened.
  • the location and self-support are particularly beneficial features of the connection system and connection method of the present invention.
  • adjectives such as first and second, left and right, top and bottom, and the like may be used solely to distinguish one element or action from another element or action without necessarily requiring or implying any actual such relationship or order.
  • reference to an integer or a component or step (or the like) is not to be interpreted as being limited to only one of that integer, component, or step, but rather could be one or more of that integer, component, or step etc.

Abstract

La présente invention concerne en général un système de liaison pour construire des composants de construction. En particulier, la présente invention est appropriée pour être utilisée dans des systèmes de construction modulaires, tels que ceux utilisant du bois de placage stratifié. Le système de liaison comprend un premier connecteur et un second connecteur. Chaque connecteur comprend un premier élément allongé ayant un premier axe longitudinal se terminant à une première extrémité et une seconde extrémité. Un second élément allongé ayant un second axe longitudinal se terminant au niveau d'une troisième extrémité et d'une quatrième extrémité. Le premier élément allongé est relié au second élément allongé de telle sorte que le second axe longitudinal est coplanaire avec le premier axe longitudinal et coupe ce dernier. Le premier connecteur et le second connecteur sont situés à l'intérieur d'un premier élément de construction. Un support ayant un élément plan ayant au moins deux loci pour fixer l'élément plan à une extrémité d'un second élément de construction. Une bride annulaire ayant un axe longitudinal perpendiculaire à l'élément plan; et l'élément plan et la bride annulaire coopèrent pour diriger une force de cisaillement vers le centre du second élément de construction. Le support est conçu pour être relié aux premier et second connecteurs pour relier les premier et second éléments de construction.
PCT/AU2017/050930 2016-09-01 2017-08-31 Système de liaison WO2018039724A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AU2016905401 2016-09-01
AU2016905401 2016-09-01
AU2017900772 2017-03-06
AU2017900772A AU2017900772A0 (en) 2017-03-06 Construction Component and Method of Use

Publications (1)

Publication Number Publication Date
WO2018039724A1 true WO2018039724A1 (fr) 2018-03-08

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WO (1) WO2018039724A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108589748A (zh) * 2018-03-19 2018-09-28 湖南路桥建设集团有限责任公司 一种浅水水下结构物预制安装的方法
JP7406434B2 (ja) 2020-03-31 2023-12-27 株式会社熊谷組 柱梁接合部

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009084781A (ja) * 2007-09-27 2009-04-23 Yoshikuni Okura 締結具
JP2015137458A (ja) * 2014-01-20 2015-07-30 株式会社竹中工務店 木質部材の接合構造

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009084781A (ja) * 2007-09-27 2009-04-23 Yoshikuni Okura 締結具
JP2015137458A (ja) * 2014-01-20 2015-07-30 株式会社竹中工務店 木質部材の接合構造

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108589748A (zh) * 2018-03-19 2018-09-28 湖南路桥建设集团有限责任公司 一种浅水水下结构物预制安装的方法
CN108589748B (zh) * 2018-03-19 2023-09-01 湖南路桥建设集团有限责任公司 一种浅水水下结构物预制安装的方法
JP7406434B2 (ja) 2020-03-31 2023-12-27 株式会社熊谷組 柱梁接合部

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