WO1991010024A1 - A plastic composite beam or pillar and a method for manufacturing a plastic composite beam or pillar - Google Patents

A plastic composite beam or pillar and a method for manufacturing a plastic composite beam or pillar Download PDF

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Publication number
WO1991010024A1
WO1991010024A1 PCT/FI1990/000311 FI9000311W WO9110024A1 WO 1991010024 A1 WO1991010024 A1 WO 1991010024A1 FI 9000311 W FI9000311 W FI 9000311W WO 9110024 A1 WO9110024 A1 WO 9110024A1
Authority
WO
WIPO (PCT)
Prior art keywords
pillar
plastic composite
composite beam
steel
manufacturing
Prior art date
Application number
PCT/FI1990/000311
Other languages
French (fr)
Inventor
Erkki Ahopelto
Toivo Kärnä
Jorma Pulkkinen
Olli Saarela
Original Assignee
Neste Oy
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 Neste Oy filed Critical Neste Oy
Priority to DE69008166T priority Critical patent/DE69008166T2/en
Priority to AT91901295T priority patent/ATE104389T1/en
Priority to EP91901295A priority patent/EP0460162B1/en
Publication of WO1991010024A1 publication Critical patent/WO1991010024A1/en

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

Definitions

  • the invention relates to a plastic composite beam or pillar.
  • the invention relates to a method for manufacturing a steel- reinforced plastic composite beam or pillar.
  • beams and pillars to be manufacrured of plastic composites are known, in which beams or pillars e.g. glass fiber or carbon fiber is used as a reinforcement.
  • beams or pillars e.g. glass fiber or carbon fiber is used as a reinforcement.
  • beams or pillars e.g. glass fiber or carbon fiber is used as a reinforcement.
  • the object of the invention is to provide an essentially more slender and more rigid plastic composite beam or pillar than the known beams.
  • the plastic composite beam or pillar according to the invention is mainly characterized in that the beam or pillar comprises a reinforced-plastic body and steel reinforcements.
  • the method according to the invention is mainly charaterized in that the steel reinforcements are placed in a beam or pillar in connection with the manufacturing of the beam or pillar by utilizing the pultrusion techique.
  • a further embodiment of the method according to the invention is mainly characterized in that in the method, holes are formed in the plastic composite beam or pillar, in which holes are placed steel reinforcements, and that resin is injected into the holes after a possible bending for fixing the steel inforcements.
  • the beam according to the invention is essentially more rigid than a conventional beam.
  • the cross-sectional area of the beam according to the invention can in certain applications be dimensioned smaller than that of a conventional beam, whereby material is saved and also material costs are reduced, since the rigidity of the beam increases owing to the additional reinforcements.
  • the inner section of the beam or pillar can be filled with a poly-urethane, a cellular polystyrene or concrete filling for preventing the buckling of the plane ⁇ like surfaces of the cross-section during bending stresses.
  • the invention also provides more applications for plastic composite beams or pillars due to their additional rigidity, and the steel parts make the fixing of profiles with screw joints possible.
  • the solution according to the invention can also replace e.g. corresponding reinforced-concrete, wood or aluminium struc ⁇ tures.
  • Fig. 1 shows schematically a curved beam
  • Fig. 2 shows schematically a straight beam or pillar
  • Fig. 3 shows schematically a cross-section A-A of Fig. 1 and a cross-section D- D of Fig. 2,
  • Fig. 4 shows schematically a cross-section D-D of Fig. 2 according to a further embodiment
  • Fig. 5 shows a cross-section according to a further embodiment of the inventive beam, e.g a section D-D of Fig. 2.
  • Fig. 1 shows a curved beam 10, whose ends are supported via supports 12.
  • the curvature of the beam 10 is achieved by bending the beam into the curvature according to an arrow R, whereafter steel reinforcements 30 are placed in holes and fixed by means of resin injection. After the resin has set, the reinforcements
  • the beam 10 can be forced into the curved form e.g. by means of a draw bar 11, which can be removed after the resin has set, or it can be left as a part of the structure.
  • Fig. 2 In Fig. 2 is shown a straight beam or pillar 20, whose ends are supported via supports 12. The additional reinforcements are marked with dotted lines indicated by a reference number 30.
  • filler 31 and the filler of the beam 10,20 is indicated by a reference number 32, which filler can comprise e.g. polyurethane or cellular polystyrene or concrete.
  • additional reinforcements according to the invention are marked with a reference number 30, and they are made e.g. of corrugated bar.
  • the steel reinforcements are placed in the plastic composite beam or pillar 10,20 by using the injection technique in such a way that the plastic cxomposite beam or pillar 10, 20 comprises finished holes 33, in which the steel reinforcements 30 are placed, and the steel reinforcements 30 are fixed in place by injecting a resin 34 into the hole 33.
  • a plastic composite beam or pillar 20 comprises a reinforced-plastic body and as an inner material 32 polyurethane or cellular polystyrene.
  • the plastic composite beam or pillar 20 according to the embodiment shown in Fig. 4 is manufactured by utilizing the pultrusion technique in such a way that the steel reinforcements 30 are added to the plastic composite beam or pillar 20 in connection with the pultrusion.
  • Fig. 5 shows a plastic composite beam or pillar 20, in which the steel reinforcements are in the form of steel plates 40.
  • the remaining structure of the plastic composite beam or pillar 20 corresponds to that shown in the other figures in such a way that the reinforced-plastic body is indicated by the reference number 31 and the inner section of the beam, made of polyurethane or cellular polystyrene, in indicated by the reference number 32.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Moulding By Coating Moulds (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)

Abstract

The invention relates to a plastic composite beam or pillar (20) comprising a reinforced-plastic body (31) and steel reinforcements (30). The invention also relates to a method for manufacturing a steel-reinforced plastic composite beam or pillar, in which method the steel reinforcements (30) are placed in the beam or pillar (20) in connection with the manufacturing of the beam or pillar (20) by utilizing the pultrusion technique.

Description

A plastic composite beam or pillar and a method for manufacturing a plastic composite beam or pillar
The invention relates to a plastic composite beam or pillar.
Furthermore, the invention relates to a method for manufacturing a steel- reinforced plastic composite beam or pillar.
In prior art, beams and pillars to be manufacrured of plastic composites are known, in which beams or pillars e.g. glass fiber or carbon fiber is used as a reinforcement. However, such known beams have not been sufficiently rigid for all applications.
The object of the invention is to provide an essentially more slender and more rigid plastic composite beam or pillar than the known beams.
For achieving the objects mentioned above and to be presented subsequenly, the plastic composite beam or pillar according to the invention is mainly characterized in that the beam or pillar comprises a reinforced-plastic body and steel reinforcements.
The method according to the invention is mainly charaterized in that the steel reinforcements are placed in a beam or pillar in connection with the manufacturing of the beam or pillar by utilizing the pultrusion techique.
A further embodiment of the method according to the invention is mainly characterized in that in the method, holes are formed in the plastic composite beam or pillar, in which holes are placed steel reinforcements, and that resin is injected into the holes after a possible bending for fixing the steel inforcements.
Owing to these additional reinforcements, the beam according to the invention is essentially more rigid than a conventional beam. The cross-sectional area of the beam according to the invention can in certain applications be dimensioned smaller than that of a conventional beam, whereby material is saved and also material costs are reduced, since the rigidity of the beam increases owing to the additional reinforcements.
The inner section of the beam or pillar can be filled with a poly-urethane, a cellular polystyrene or concrete filling for preventing the buckling of the plane¬ like surfaces of the cross-section during bending stresses.
The invention also provides more applications for plastic composite beams or pillars due to their additional rigidity, and the steel parts make the fixing of profiles with screw joints possible. The solution according to the invention can also replace e.g. corresponding reinforced-concrete, wood or aluminium struc¬ tures.
The invention is next described in more detail with reference to the figures of the accompanying drawing, in which
Fig. 1 shows schematically a curved beam,
Fig. 2 shows schematically a straight beam or pillar,
Fig. 3 shows schematically a cross-section A-A of Fig. 1 and a cross-section D- D of Fig. 2,
Fig. 4 shows schematically a cross-section D-D of Fig. 2 according to a further embodiment, and
Fig. 5 shows a cross-section according to a further embodiment of the inventive beam, e.g a section D-D of Fig. 2.
Fig. 1 shows a curved beam 10, whose ends are supported via supports 12. The curvature of the beam 10 is achieved by bending the beam into the curvature according to an arrow R, whereafter steel reinforcements 30 are placed in holes and fixed by means of resin injection. After the resin has set, the reinforcements
30 maintain the beam in the curved form. The beam 10 can be forced into the curved form e.g. by means of a draw bar 11, which can be removed after the resin has set, or it can be left as a part of the structure.
In Fig. 2 is shown a straight beam or pillar 20, whose ends are supported via supports 12. The additional reinforcements are marked with dotted lines indicated by a reference number 30.
In the schematic cross-section shown in Fig. 3 of a beam or pillar 10, 20, the reinforced-plastic structure of the beam 10,20 is indicated by a reference number
31 and the filler of the beam 10,20 is indicated by a reference number 32, which filler can comprise e.g. polyurethane or cellular polystyrene or concrete. The additional reinforcements according to the invention are marked with a reference number 30, and they are made e.g. of corrugated bar.
In the embodiment of Fig. 3, the steel reinforcements are placed in the plastic composite beam or pillar 10,20 by using the injection technique in such a way that the plastic cxomposite beam or pillar 10, 20 comprises finished holes 33, in which the steel reinforcements 30 are placed, and the steel reinforcements 30 are fixed in place by injecting a resin 34 into the hole 33.
In the inventive example of Fig. 4, a plastic composite beam or pillar 20 comprises a reinforced-plastic body and as an inner material 32 polyurethane or cellular polystyrene. The plastic composite beam or pillar 20 according to the embodiment shown in Fig. 4 is manufactured by utilizing the pultrusion technique in such a way that the steel reinforcements 30 are added to the plastic composite beam or pillar 20 in connection with the pultrusion.
Fig. 5 shows a plastic composite beam or pillar 20, in which the steel reinforcements are in the form of steel plates 40. The remaining structure of the plastic composite beam or pillar 20 corresponds to that shown in the other figures in such a way that the reinforced-plastic body is indicated by the reference number 31 and the inner section of the beam, made of polyurethane or cellular polystyrene, in indicated by the reference number 32.
The invention has above been described only with reference to its certain preferred embodiments. However, the intention is in no way to limit the invention to these examples, but many changes and modifications are possible within the inventive idea defined in the following patent claims.

Claims

Claims
1. A plastic composite beam or pillar, characterized in that the beam or pillar (10,20) comprises a reinforced-plastic body (31) and steel reinforcements (30,40).
2. A plastic composite beam or pillar according to Claim 1, characterized in that the beam or pillar comprises an inner section (32) made of polyurethane or cellular polystyrene or concrete.
3. A plastic composite beam or pillar according to Claim 1 or 2, characterized in that the steel reinforcement is a bar (30), e.g. a corrugated bar.
4. A plastic composite beam or pillar according to Claim 1 or 2, characterized in that the steel reinforcement is a steel plate (40).
5. A plastic composite beam or pillar according to any of the Claims 1-4, characterized in that the beam or pillar (10,20) comprising steel reinforcements (30,40) is manufactured with the pultrusion technique.
6. A plastic composite beam or pillar according to any of the Claims 1-4, characterized in that in the beam or pillar (10,20) are formed holes (33), in which the steel reinforcements (30,40) are fixed by utilizing the injection technique.
7. A plastic composite beam or pillar according to any of the Claims 1-6, characterized in that the steel reinforcements (30,40) are placed inside a body (31) made of reinforced plastic.
8. A method for manufacturing a steel-reinforced plastic composite beam or pillar, characterized in that the steel reinforcements (30,40) are placed in the beam or pillar (10,20) in connection with the manufacturing of the beam or pillar (10,20) by utilizing the pultrusion technique.
9. A method for manufacturing a steel-reinforced plastic composite beam or composite beam or pillar, in which holes are placed steel reinforcements (30,40), and that resin is injected into the holes (33) after a possible bending for fixing the steel inforcements (30,40).
PCT/FI1990/000311 1989-12-22 1990-12-21 A plastic composite beam or pillar and a method for manufacturing a plastic composite beam or pillar WO1991010024A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE69008166T DE69008166T2 (en) 1989-12-22 1990-12-21 METHOD FOR PRODUCING A BAR OR COLUMN FROM A PLASTIC MIXTURE.
AT91901295T ATE104389T1 (en) 1989-12-22 1990-12-21 PROCESS FOR MANUFACTURING A PLASTIC MIXTURE BEAM OR COLUMN.
EP91901295A EP0460162B1 (en) 1989-12-22 1990-12-21 A method for manufacturing a plastic composite beam or pillar

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI896214A FI85403C (en) 1989-12-22 1989-12-22 Process for producing a plastic composite beam or pillar with the steel reinforcement
FI896214 1989-12-22

Publications (1)

Publication Number Publication Date
WO1991010024A1 true WO1991010024A1 (en) 1991-07-11

Family

ID=8529578

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1990/000311 WO1991010024A1 (en) 1989-12-22 1990-12-21 A plastic composite beam or pillar and a method for manufacturing a plastic composite beam or pillar

Country Status (5)

Country Link
EP (1) EP0460162B1 (en)
AT (1) ATE104389T1 (en)
DE (1) DE69008166T2 (en)
FI (1) FI85403C (en)
WO (1) WO1991010024A1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0604099A1 (en) * 1992-12-21 1994-06-29 Xerox Corporation Tubular pultruded member having uniform wall thickness
ES2190900A1 (en) * 2002-02-12 2003-08-16 La Puerta Climente Jose Enr De Vehicle containment barrier
WO2004101909A1 (en) * 2003-05-14 2004-11-25 N.V. Bekaert S.A. Pultruded composite profile reinforced by metal cords
US7626026B2 (en) 2001-02-22 2009-12-01 University Of Bradford Pyrrolo-indole and pyrrolo-quinoline derivatives as prodrugs for tumour treatment
WO2011144482A1 (en) 2010-05-18 2011-11-24 Nv Bekaert Sa Pvc reinforced composites
FR3031126A1 (en) * 2014-12-30 2016-07-01 Sarrat Jacques Etienne MULTI-PURPOSE STRUCTURAL PROFILE OF ALUMINUM OR COMPOSITE MATERIALS, ROUND HAMMER OF H.A STEEL, COATED IN AN EXPANSIVE RESIN H.D, AS A SUPPORT FOR VARIOUS ACCESSORIES
GB2538781A (en) * 2015-05-28 2016-11-30 Kanwaljit Gill Singh A beam
GB2617894A (en) * 2022-02-15 2023-10-25 Sustainable Resources Ltd A foundation beam

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1956826A1 (en) * 1969-11-12 1971-05-13 Helmut Schrader Lightweight plastic carrier
FR2252465A1 (en) * 1973-11-27 1975-06-20 Chevanne Sylvain Building panel with low density cellular core - has reinforced plaster around the parallelepiped shape core
DE2629373B2 (en) * 1976-06-30 1980-01-31 Dyckerhoff & Widmann Ag, 8000 Muenchen Composite component made of rigid foam with reinforcing steel inserts
EP0059177A2 (en) * 1981-02-19 1982-09-01 Hilmar Rasmus Nielsen Building component
SE447361B (en) * 1982-04-27 1986-11-10 Norrvica Tecnica Ab Sandwich element comprised of a spacing material between fibre reinforced coating

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1956826A1 (en) * 1969-11-12 1971-05-13 Helmut Schrader Lightweight plastic carrier
FR2252465A1 (en) * 1973-11-27 1975-06-20 Chevanne Sylvain Building panel with low density cellular core - has reinforced plaster around the parallelepiped shape core
DE2629373B2 (en) * 1976-06-30 1980-01-31 Dyckerhoff & Widmann Ag, 8000 Muenchen Composite component made of rigid foam with reinforcing steel inserts
EP0059177A2 (en) * 1981-02-19 1982-09-01 Hilmar Rasmus Nielsen Building component
SE447361B (en) * 1982-04-27 1986-11-10 Norrvica Tecnica Ab Sandwich element comprised of a spacing material between fibre reinforced coating

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0604099A1 (en) * 1992-12-21 1994-06-29 Xerox Corporation Tubular pultruded member having uniform wall thickness
US5366773A (en) * 1992-12-21 1994-11-22 Xerox Corporation Tubular pultruded member having uniform wall thickness
US7626026B2 (en) 2001-02-22 2009-12-01 University Of Bradford Pyrrolo-indole and pyrrolo-quinoline derivatives as prodrugs for tumour treatment
ES2190900A1 (en) * 2002-02-12 2003-08-16 La Puerta Climente Jose Enr De Vehicle containment barrier
WO2004101909A1 (en) * 2003-05-14 2004-11-25 N.V. Bekaert S.A. Pultruded composite profile reinforced by metal cords
WO2011144482A1 (en) 2010-05-18 2011-11-24 Nv Bekaert Sa Pvc reinforced composites
US9328208B2 (en) 2010-05-18 2016-05-03 Nv Bekaert Sa PVC reinforced composites
FR3031126A1 (en) * 2014-12-30 2016-07-01 Sarrat Jacques Etienne MULTI-PURPOSE STRUCTURAL PROFILE OF ALUMINUM OR COMPOSITE MATERIALS, ROUND HAMMER OF H.A STEEL, COATED IN AN EXPANSIVE RESIN H.D, AS A SUPPORT FOR VARIOUS ACCESSORIES
GB2538781A (en) * 2015-05-28 2016-11-30 Kanwaljit Gill Singh A beam
GB2538781B (en) * 2015-05-28 2021-03-17 Singh Gill Kanwaljit A beam
GB2617894A (en) * 2022-02-15 2023-10-25 Sustainable Resources Ltd A foundation beam

Also Published As

Publication number Publication date
ATE104389T1 (en) 1994-04-15
FI896214A (en) 1991-06-23
FI85403B (en) 1991-12-31
EP0460162A1 (en) 1991-12-11
FI85403C (en) 1992-04-10
FI896214A0 (en) 1989-12-22
DE69008166D1 (en) 1994-05-19
DE69008166T2 (en) 1994-08-04
EP0460162B1 (en) 1994-04-13

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