EP0460162B1 - A method for manufacturing a plastic composite beam or pillar - Google Patents

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

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Publication number
EP0460162B1
EP0460162B1 EP91901295A EP91901295A EP0460162B1 EP 0460162 B1 EP0460162 B1 EP 0460162B1 EP 91901295 A EP91901295 A EP 91901295A EP 91901295 A EP91901295 A EP 91901295A EP 0460162 B1 EP0460162 B1 EP 0460162B1
Authority
EP
European Patent Office
Prior art keywords
pillar
plastic composite
composite beam
steel
manufacturing
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
EP91901295A
Other languages
German (de)
French (fr)
Other versions
EP0460162A1 (en
Inventor
Erkki Ahopelto
Toivo Kärnä
Jorma Pulkkinen
Olli Saarela
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.)
Neste Oyj
Original Assignee
Neste Oyj
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 Oyj filed Critical Neste Oyj
Publication of EP0460162A1 publication Critical patent/EP0460162A1/en
Application granted granted Critical
Publication of EP0460162B1 publication Critical patent/EP0460162B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 method for manufacturing a steel-reinforced plastic composite beam or pillar.
  • beams and pillars to be manufactured 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
  • beams or pillars comprising reinforced plastic bodies having steel reinforcements are known and their preparation disclosed in DE-A-1956826.
  • a method for manufacturing a steel-reinforced plastic composite beam or pillar characterized in that the plastic composite beam or pillar (20) is manufactured by placing steel reinforcements (30, 40) in the beam or pillar (20) by utilizing the pultrusion technique at the same time as the beam or pillar (20) is formed by pultrusion.
  • the pultrusion technique is, for example, described in US-A-4301201 and US-A-4394338.
  • the cross-sectional area of the beam produced 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 requirements.
  • 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 structures.
  • Fig. 1 In Fig. 1 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.
  • 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. 2 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. 3 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, is indicated by the reference number 32.

Landscapes

  • 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

  • The invention relates to a method for manufacturing a steel-reinforced plastic composite beam or pillar.
  • In prior art, beams and pillars to be manufactured 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. Beams or pillars comprising reinforced plastic bodies having steel reinforcements are known and their preparation disclosed in DE-A-1956826.
  • According to the invention there is provided a method for manufacturing a steel-reinforced plastic composite beam or pillar, characterized in that the plastic composite beam or pillar (20) is manufactured by placing steel reinforcements (30, 40) in the beam or pillar (20) by utilizing the pultrusion technique at the same time as the beam or pillar (20) is formed by pultrusion.
  • The pultrusion technique is, for example, described in US-A-4301201 and US-A-4394338.
  • The cross-sectional area of the beam produced 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 requirements.
  • 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 structures.
  • The invention is next described in more detail with reference to the figures of the accompanying drawing, in which
    • Fig. 1 shows schematically a straight beam or pillar,
    • Fig. 2 shows schematically a cross-section B-B of Fig. 1 according to one embodiment, and
    • Fig. 3 shows a cross-section according to a further embodiment of the inventive beam, e.g. a section B-B of Fig. 1.
  • In Fig. 1 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 inventive example of Fig. 2, 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. 2 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. 3 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, is 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 (3)

  1. A method for manufacturing a steel-reinforced plastic composite beam or pillar, characterized in that the plastic composite beam or pillar (20) is manufactured by placing steel reinforcements (30, 40) in the beam or pillar (20) by utilizing the pultrusion technique at the same time as the beam or pillar (20) is formed by pultrusion.
  2. A method according to claim 1, characterized in that a bar (30), e.g. a corrugated bar, is used as the steel reinforcement.
  3. A method according to claim 1, characterized in that a steel plate (40) is used as the steel reinforcement.
EP91901295A 1989-12-22 1990-12-21 A method for manufacturing a plastic composite beam or pillar Expired - Lifetime EP0460162B1 (en)

Applications Claiming Priority (3)

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

Publications (2)

Publication Number Publication Date
EP0460162A1 EP0460162A1 (en) 1991-12-11
EP0460162B1 true EP0460162B1 (en) 1994-04-13

Family

ID=8529578

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91901295A Expired - Lifetime EP0460162B1 (en) 1989-12-22 1990-12-21 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)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5366773A (en) * 1992-12-21 1994-11-22 Xerox Corporation Tubular pultruded member having uniform wall thickness
JP2004529887A (en) 2001-02-22 2004-09-30 スクール オブ ファーマシー， ユニヴァーシティ オブ ロンドン Pyrrolo-indole and pyrrolo-quinoline derivatives as prodrugs for treating tumors
ES2190900B1 (en) * 2002-02-12 2005-01-01 Jose Enrique De La Puerta Climente BARRIER OF CONTAINMENT OF VEHICLES.
WO2004101909A1 (en) * 2003-05-14 2004-11-25 N.V. Bekaert S.A. Pultruded composite profile reinforced by metal cords
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
GB2538781B (en) * 2015-05-28 2021-03-17 Singh Gill Kanwaljit A beam
GB202201984D0 (en) * 2022-02-15 2022-03-30 Sustainable Resources Ltd A foundation beam

Family Cites Families (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
SE8101124L (en) * 1981-02-19 1982-08-20 Nielsen Hilmer R BUILDING UNIT
SE447361B (en) * 1982-04-27 1986-11-10 Norrvica Tecnica Ab Sandwich element comprised of a spacing material between fibre reinforced coating

Also Published As

Publication number Publication date
WO1991010024A1 (en) 1991-07-11
ATE104389T1 (en) 1994-04-15
FI896214L (en) 1991-06-23
EP0460162A1 (en) 1991-12-11
FI896214A0 (en) 1989-12-22
FI85403B (en) 1991-12-31
FI85403C (en) 1992-04-10
DE69008166D1 (en) 1994-05-19
DE69008166T2 (en) 1994-08-04

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