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EP1907648A2 - Éléments structuraux constitués de panneaux sandwich à mousse syntactique - Google Patents

Éléments structuraux constitués de panneaux sandwich à mousse syntactique

Info

Publication number
EP1907648A2
EP1907648A2 EP06760913A EP06760913A EP1907648A2 EP 1907648 A2 EP1907648 A2 EP 1907648A2 EP 06760913 A EP06760913 A EP 06760913A EP 06760913 A EP06760913 A EP 06760913A EP 1907648 A2 EP1907648 A2 EP 1907648A2
Authority
EP
European Patent Office
Prior art keywords
syntactic foam
sandwich panel
structural member
fibre reinforced
syntactic
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.)
Withdrawn
Application number
EP06760913A
Other languages
German (de)
English (en)
Other versions
EP1907648A4 (fr
Inventor
Darren James Browne
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.)
LOC Composites Pty Ltd
Original Assignee
LOC Composites Pty Ltd
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 AU2005903962A external-priority patent/AU2005903962A0/en
Application filed by LOC Composites Pty Ltd filed Critical LOC Composites Pty Ltd
Publication of EP1907648A2 publication Critical patent/EP1907648A2/fr
Publication of EP1907648A4 publication Critical patent/EP1907648A4/fr
Withdrawn legal-status Critical Current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
    • E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
    • E04C3/291—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures with apertured web
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
    • 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
    • E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
    • E04B5/026—Load-carrying floor structures formed substantially of prefabricated units with beams or slabs of plastic
    • 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
    • E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
    • E04B5/04—Load-carrying floor structures formed substantially of prefabricated units with beams or slabs of concrete or other stone-like material, e.g. asbestos cement
    • 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
    • E04C3/28—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of materials not covered by groups E04C3/04 - E04C3/20
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2101/00—Material constitution of bridges
    • E01D2101/40—Plastics
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y10T428/249987—With nonvoid component of specified composition
    • Y10T428/24999—Inorganic
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y10T428/249987—With nonvoid component of specified composition
    • Y10T428/249991—Synthetic resin or natural rubbers

Definitions

  • This invention relates to a method of manufacturing structural elements.
  • the invention resides in a structural member comprising: a least one syntactic foam sandwich panel; the sandwich panel having a syntactic foam core and at least one skin; and at least one reinforcement element attached to the sandwich panel.
  • the syntactic foam core may include microspheres made from polymeric materials such epoxy resin, unsaturated polyester resin, silicone resin, phenolics, polyvinyl alcohol, polyvinyl chloride, polypropylene, and polystyrene or from inorganic materials such as glass, silica-alumina ceramics or Cenospheres (hollow fly ash particles)
  • the skins of the syntactic foam sandwich panels may be made from fibre reinforced polymers.
  • the fibres may be made from glass, carbon,
  • the polymer may be made of polyester, vinylester, epoxy, polyurethane, thermoplastics or combination thereof.
  • the polymer used in the skins is the same as that used in the syntactic foam. More preferably the syntactic foam sandwich panel is produced in single manufacturing process, in this way a strong primary bond can be created between the skins and the syntactic foam core.
  • the reinforcement elements may be made from steel, concrete, timber, fibre reinforced polymers or any other material.
  • An adhesive is typically used to adhere the syntactic foam sandwich panels to the reinforcement elements.
  • the fibres may be made from glass, carbon, Kevlar, thermoplastic or combinations thereof and the polymer may be made of polyester, vinylester, epoxy, polyurethane, thermoplastic resins or combinations thereof.
  • One or more tie elements may span across the adhesive in order to avoid delamination of the adhesive and provide the assembly with robustness.
  • the tie elements may be made from steel, concrete, timber, fibre reinforced polymers or any other material.
  • the tie elements might also act as a reinforcement element.
  • the structural elements may include bulkheads, diaphragms, strong points and/or internal ties.
  • the invention resides in a method of producing an improved structural element, said method including the steps of: obtaining at least one syntactic foam sandwich panel; obtaining at least one reinforcement element; and joining the at least one syntactic foam sandwich panel and reinforcement element to form the improved structural element.
  • FIG 1 A is a side view of a syntactic foam sandwich panel
  • FIG 1B is a transverse cross sectional view of the sandwich panel according to FIG 1A;
  • FIG 2 is a transverse cross sectional view of a structural element according to a first embodiment of the invention
  • FIG 3 is a transverse cross sectional view of a structural element according to a second embodiment of the invention
  • FIG 4 is a transverse cross sectional view of a structural element according to a fourth embodiment of the invention
  • FIG 5 is a transverse cross sectional view of a structural element according to a fourth embodiment of the invention.
  • FIG 6 is a transverse cross sectional view of a structural element according to a fifth embodiment of the invention.
  • FIG 7 is a transverse cross sectional view of a structural element according to a sixth embodiment of the invention.
  • FIG 8 is a transverse cross sectional view of a structural element according to a seventh embodiment of the invention.
  • FIG 9 is a transverse cross sectional view of a structural element according to an eighth embodiment of the invention.
  • FIG 10 is a transverse cross sectional view of a structural element according to a ninth embodiment of the invention.
  • FIG 11 is a transverse cross sectional view of a structural element according to a tenth embodiment of the invention.
  • FIG 12 is a side view of a reinforcement system that incorporates a number of bulkheads
  • FIG 13 shows a perspective view of a structural element according to an eleventh embodiment of the invention.
  • FIG 14 shows a transverse cross sectional view of a structural element according to a twelfth embodiment of the invention
  • FIG 15A shows a perspective of a pedestrian bridge which has been produced by combining structural elements according to the invention
  • FIG 15B shows an end view of the same pedestrian bridge.
  • FIG 16 shows a transverse cross sectional view of a road bridge which has been produced by combining structural elements according to the present invention.
  • FIGS 1A and FIG 1 B shows a sandwich panel 10 used to produce structural elements as shown in FIGS 2 to 16.
  • the sandwich panel has a syntactic foam core 11 and two fibre reinforced polymer skins 12.
  • the syntactic foam core in this embodiment is made from epoxy resin with Cenospheres and expanded polystyrene bead fillers. It should be appreciated that the materials used to produce the syntactic foam core may be varied to specified need of a structural element.
  • the reinforced polymer skins are made from glass fibre and epoxy resin. It should be appreciated that the syntactic fibre reinforced polymer skins may be also made from other materials depending on the structural requirements of a structural member.
  • FIG 2 shows a cross section of structural member 20 that consists of a syntactic foam panel 10 having two reinforcing elements in the form of two steel reinforcement strips 21.
  • the two steel reinforcement strips 21 are substantially rectangular in transverse cross section.
  • two grooves are cut in the syntactic foam core 11 of the syntactic panel 10.
  • Adhesive is then placed on the two steel reinforcement strips 21 and the two steel reinforcement strips 21 are located within the grooves to contact the syntactic foam core.
  • the two steel reinforcement strips 21 increase the strength and stiffness.
  • FIG 3 shows a cross section of a beam 30 having a syntactic foam panel 10 and two reinforcing elements in the form of two fibre reinforced polymer reinforcement strips 31.
  • the two fibre reinforced polymer reinforcement strips 31 have fibres that are made from carbon and the polymer is epoxy resin.
  • the beam shown in FIG 3 is produced by applying adhesive on the two fibre reinforced polymer reinforcement strips 31.
  • the two fibre reinforced polymer reinforcement strips 31 are the placed on respective ends of the sandwich panel to complete the beam 30.
  • the beam has improved strength and stiffness.
  • FIG 4 shows a cross section of a beam 40 including a sandwich panel 10 and two reinforcement elements in the form of two fibre reinforced polymer U-shape sections 41.
  • the two fibre reinforced polymer U-shape sections 41 are made from pultruded polyester-glass fibre composites that are relatively inexpensive to manufacture.
  • the beam 40 is manufactured by applying adhesive to the two fibre reinforced polymer U-shape sections 41 and placing the two fibre reinforced polymer U-shape sections 41 over respective ends of the sandwich panel. Due to the shape of the fibre reinforced polymer U-shape sections 41 , the contact area between the reinforcement modules and the syntactic foam panel 10 is significantly increased compared to the fibre reinforced polymer reinforcement strips 31 in FIG 3. This results in significantly increased resistance against delamination of the two fibre reinforced polymer U-shape sections 41 from the sandwich panel 10. Further, the two fibre reinforced polymer U-shape sections 41 also contact two fibre reinforced polymer skins 12.
  • FIG 5 shows a beam 50 that is a variation of beam of FIG 4.
  • filler elements 51 in the form of epoxy resin and Cenospheres are located between the two fibre reinforced polymer U-shape sections 41 adjacent the two fibre reinforced polymer skins 12.
  • FIG 6 shows a beam 60 that is a variation of the beam 50 that is shown in FIG 5.
  • the beam 60 replaced the single syntactic foam sandwich beam 10 with two half-width syntactic foam sandwich panels 15.
  • FIG 7 shows a beam 70 produced using a syntactic foam sandwich panel 10, a top reinforcement element in the form of a polymer concrete flange 71 and a bottom reinforcement panel in the form of a pultruded polyester-glass fibre composite U-shape section 72. Adhesive is again used to adhere the polymer concrete flange and the pultruded polyester-glass fibre composite U-shape section 72 to the syntactic foam sandwich panel 10.
  • FIG 8 shows a transverse cross section of a hollow beam 80 that is formed from four syntactic foarri panels 10 and two reinforcement elements in the form of two pultruded fibre reinforced polymer square sections 81.
  • the four syntactic foam panels 10 are adhered to the two pultruded fibre reinforced polymer square sections 81.
  • the square reinforcement elements have large planar surfaces which bond strongly to the two fibre reinforced polymer skins 12.
  • the structural member of FIG 8 can be provided with additional bulkheads in the space between the two reinforcement elements as shown in FIG 12.
  • the vertical elements 82 in FIG 12 can be made of sections of syntactic foam panels 10 or the sections of the pultruded fibre reinforced polymer square sections 81.
  • FIG 9 shows a transverse cross section of a hollow beam 90 made from four syntactic foam sandwich panels 10 and reinforcement elements in the form of four angle sections 91.
  • the angle sections 91 are made of steel.
  • the hollow beam is formed by adhering the four syntactic foam sandwich panels together and adhering the four angle sections in respective corners.
  • the angle sections provide the hollow beam with reinforced corners.
  • the hollow beam may be provided with bulkheads as shown in FIG 12.
  • FIG 10 shows a larger hollow beamlOO that consists of three syntactic foam panels 10 and two different types of reinforcement elements.
  • the first reinforcement element is in the form of two fibre reinforced polymer U-shape sections 101 whilst the second reinforcement element is in the form of four pultruded fibre reinforced polymer square sections 102.
  • the two fibre reinforced polymer U-shape sections 101 are made of glass fibre reinforced phenolic resin whilst the four pultruded fibre reinforced polymer square sections 102 are made of carbon fibre reinforced vinyl ester resin.
  • the hollow beam 100 is manufactured by using adhering the four pultruded fibre reinforced polymer square sections 102 and the syntactic foam panels 10 are together using an epoxy adhesive.
  • the fibre reinforced polymer U-shape sections 101 are then adhered to the syntactic foam panels 10 using the phenolic resin.
  • the space between the reinforcement modules 92 can be provided with bulkheads as shown in FIG 12 as is required.
  • FIG 11 shows a hollow beam 110 that is a variation of beam 100 shown in FIG 10.
  • the hollow beam 110 has a top first reinforcement member in the form of a polymer concrete member 111 that replaces the top fibre reinforced polymer U-shape sections 101.
  • the polymer concrete member 111 combines good compression capacity with excellent durability.
  • FIG 13 shows a solid beam 120 having a syntactic foam sandwich panel 10 and a reinforcement element in the form of a layer of polymer concrete 121.
  • the polymer concrete layer 121 provides the sandwich panel with improved wear resistance and compression capacity.
  • FIG 14 shows a solid beam 130 consisting of two syntactic foam sandwich panels 10 and a reinforcement element in the form of a layer of standard concrete 131.
  • the solid beam 130 is formed by adhering the two syntactic foam sandwich panels 10 together using an epoxy adhesive.
  • the top of the double syntactic foam sandwich panel is provided with an aggregate interface 132.
  • the aggregate interface 133 is made of aggregate having an average size of 10mm and is adhered to a top fibre reinforced polymer skin 12 of the syntactic foam sandwich panel 10 with epoxy adhesive.
  • the layer of standard concrete 131 is then laid directly onto the aggregate interface.
  • the concrete layer is approximately 150mm thick.
  • the syntactic foam panels act as formwork and support the wet concrete. Once the concrete has cured the syntactic foam sandwich panels act as external fibre composite reinforcement for the concrete.
  • This aggregate interface 133 provides an excellent bonding surface for the layer of polymer concrete 132 to prevent delamination of the layer of standard concrete 132 from the top of the syntactic foam sandwich panel 10.
  • FIG 15A and FIG 15B show an example of a pedestrian bridge consisting of structural elements produced using the current method, which have been used in conjunction with each other to produce improved structures.
  • the bridge has multiple deck planks 135 which are made of the structural element shown in FIG 13.
  • the longitudinal bridge beams 140 are made of the structural element shown in FIG 10.
  • the posts 150 are made from the structural element shown in FIG 9.
  • the rails of the hand rails 160 are made from the structural element shown in FIG 6.
  • FIG 16 shows an example of a road bridge consisting of structural elements produced using the current method, which have been used in conjunction with each other to produce improved structures.
  • the bridge beams 170 are made using the principles of the structural element shown in FIG 11.
  • the concrete deck 180 is reinforced using the principle of the structural element shown in FIG 14.
  • the bottom flange of the bridge beams are tied together using a syntactic foam sandwich panel 190 which is adhered to the beams.
  • FIG 17 shows another embodiment of a road bridge 200 that consists of five syntactic foam panel beams 210 interlinked by a syntactic foam sandwich panel deck 220.
  • the five syntactic foam panel beams 210 are adhered to the syntactic foam sandwich panel deck 220.
  • Each syntactic foam panel beam 210 includes six syntactic foam panels 211 with adhered reinforcement in the form of nineteen pultruded fibre reinforced polymer square sections 212.
  • Each of the reinforcement sections are made of glass fibre reinforced epoxy resin.
  • Most of the pultruded fibre reinforced polymer square sections 212A are filed with polymer concrete.
  • Some of the pultruded fibre reinforced polymer square sections 212B are filled with a steel reinforcement bar and polymer concrete.
  • the syntactic foam sandwich panel deck 220 is made from six syntactic foam panels 221 adhered together.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Laminated Bodies (AREA)
  • Bridges Or Land Bridges (AREA)
  • Panels For Use In Building Construction (AREA)

Abstract

Elément structural qui comporte au moins un panneau sandwich à mousse syntactique, ledit panneau sandwich possédant une partie centrale en mousse syntactique et au moins un revêtement, et au moins un élément de renforcement attaché au panneau sandwich.
EP06760913A 2005-07-26 2006-07-26 Éléments structuraux constitués de panneaux sandwich à mousse syntactique Withdrawn EP1907648A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2005903962A AU2005903962A0 (en) 2005-07-26 Structural elements made from syntactic foam sandwich panels
PCT/AU2006/001052 WO2007012127A2 (fr) 2005-07-26 2006-07-26 Éléments structuraux constitués de panneaux sandwich à mousse syntactique

Publications (2)

Publication Number Publication Date
EP1907648A2 true EP1907648A2 (fr) 2008-04-09
EP1907648A4 EP1907648A4 (fr) 2011-03-09

Family

ID=37683685

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06760913A Withdrawn EP1907648A4 (fr) 2005-07-26 2006-07-26 Éléments structuraux constitués de panneaux sandwich à mousse syntactique

Country Status (5)

Country Link
US (1) US20080199682A1 (fr)
EP (1) EP1907648A4 (fr)
CA (1) CA2616596A1 (fr)
NZ (1) NZ565361A (fr)
WO (1) WO2007012127A2 (fr)

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US8056953B2 (en) * 2008-06-13 2011-11-15 Itt Manufacturing Enterprises, Inc. Thermal barrier system
US8691340B2 (en) 2008-12-31 2014-04-08 Apinee, Inc. Preservation of wood, compositions and methods thereof
US9878464B1 (en) 2011-06-30 2018-01-30 Apinee, Inc. Preservation of cellulosic materials, compositions and methods thereof
CN106376238A (zh) * 2013-09-19 2017-02-01 里卡多·迪奥戈·卡马乔·维埃拉·德·奥利韦拉 用于房屋和建筑物的建筑结构
JP6961984B2 (ja) * 2017-03-31 2021-11-05 株式会社Ihi 柱構造体
US10876718B2 (en) * 2017-10-04 2020-12-29 Hubbell Incorporated Light base

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FR2275605A1 (fr) * 1974-06-19 1976-01-16 Francois Allard Element de construction
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CA2030011A1 (fr) * 1990-11-14 1992-05-15 Peter A.D. Mill Panneau de construction composite
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WO2005056948A1 (fr) * 2003-12-10 2005-06-23 The University Of Southern Queensland Element structurel

Also Published As

Publication number Publication date
WO2007012127A2 (fr) 2007-02-01
NZ565361A (en) 2009-12-24
EP1907648A4 (fr) 2011-03-09
US20080199682A1 (en) 2008-08-21
CA2616596A1 (fr) 2007-02-01
WO2007012127A3 (fr) 2007-04-19

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