WO2003100187A1 - Steel beam - Google Patents

Steel beam Download PDF

Info

Publication number
WO2003100187A1
WO2003100187A1 PCT/FI2003/000399 FI0300399W WO03100187A1 WO 2003100187 A1 WO2003100187 A1 WO 2003100187A1 FI 0300399 W FI0300399 W FI 0300399W WO 03100187 A1 WO03100187 A1 WO 03100187A1
Authority
WO
WIPO (PCT)
Prior art keywords
web
base plate
parts
openings
steel beam
Prior art date
Application number
PCT/FI2003/000399
Other languages
French (fr)
Other versions
WO2003100187A8 (en
Inventor
Kari Tuominen
Original Assignee
Teräspeikko 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8564025&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2003100187(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Teräspeikko Oy filed Critical Teräspeikko Oy
Priority to EP03725252A priority Critical patent/EP1507939B1/en
Priority to AT03725252T priority patent/ATE474100T1/en
Priority to DE60333360T priority patent/DE60333360D1/en
Priority to AU2003227800A priority patent/AU2003227800A1/en
Priority to DK03725252.5T priority patent/DK1507939T3/en
Publication of WO2003100187A1 publication Critical patent/WO2003100187A1/en
Publication of WO2003100187A8 publication Critical patent/WO2003100187A8/en
Priority to NO20045685A priority patent/NO331579B1/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
    • 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
    • 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
    • E04C3/293—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures the materials being steel and concrete
    • 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
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/17—Floor structures partly formed in situ
    • E04B5/23—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated
    • E04B5/29—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated the prefabricated parts of the beams consisting wholly of metal
    • 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
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C3/06—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with substantially solid, i.e. unapertured, web
    • E04C3/07—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with substantially solid, i.e. unapertured, web at least partly of bent or otherwise deformed strip- or sheet-like material

Definitions

  • the invention relates to a steel beam that is arranged to serve together with concrete as a bearing composite structure for various slab systems, the composite structure comprising a base plate and two web parts arranged side by side at a distance from each other and joined at first ends of the web parts by means of a horizontal top part, whereby the base plate, web parts and horizontal top part are arranged to form a space that can be filled with concrete.
  • the invention relates to a beam, on which the bearing struc- tures of a building, such as hollow-core slabs, composite slabs, shell slabs and cast-in-situ, can be supported.
  • a building such as hollow-core slabs, composite slabs, shell slabs and cast-in-situ
  • the beam is filled with concrete, and after the concrete has hardened, the beam serves as a composite structure.
  • Beams of this type are today quite well known in the field of element structures. Examples of solutions known in the field are those described in Finnish publications 85745 and 92089.
  • the use of a composite structure provides a steel beam that is lighter than the earlier ones and the beam can be used at longer bearings than those in the earlier beams.
  • the steel beam of the invention is characterized in that one web part is in a manner known per se made slanted relative to the base plate and a corbel flange extending from it and equipped with openings, and that the other web part is made substantially perpendicular to the base plate and has no openings.
  • the advantage of the invention over the prior art is above all the fact that the additional costs related to edge structures are eliminated in a very advantageous manner.
  • the steel beam of the invention is also simple, whereby the introduction and use of the invention are advantageous.
  • a yet further advantage is that the beam of the invention, especially a beam intended for edge structures, can be manufactured in the same manufacturing line as the conventional, symmetrical steel-concrete composite beam. The above- mentioned matter makes the steel beam of the invention advantageous to manufacture.
  • Figures 1 is a longitudinal view of the steel beam of the invention
  • Figure 2 is a perspective view of the steel beam of Figure 1
  • Figure 3 is a perspective view of the steel beam of Figures 1 and 2 from another direction.
  • Figure 1 shows a general view of the steel beam of the invention that is intended to serve together with concrete as a bearing composite structure for various slab systems.
  • the beam comprises a base plate 1 and two web parts 2, 3.
  • the web parts 2, 3 are arranged side by side at a distance from each other and joined at the first edges of the web parts 2, 3 by means of a horizontal top part 4.
  • the web parts 2, 3 and horizontal top part 4 are arranged to form a space that can be filled with concrete.
  • the web part 2 has openings 6, through which concrete can be fed into the space formed by the base plate 1 , web parts 2, 3 and top part 4.
  • the beam also has a corbel flange 5, on which a hollow-core slab, for instance, is arranged. All above-mentioned beam parts can be cut from a steel plate.
  • the second web part 2 is made in a manner known per se into a part that is equipped with openings and slanted relative to the base plate 1 and the corbel flange 5 extending from it.
  • the second web part 3 is, in turn, made into an opening-free part substantially perpendicular to the base plate 1.
  • the above-mentioned mat- ters are shown not only in Figure 1 , but also especially well in Figures 2 and 3.
  • a beam suitable for edge structures refers herein to the beam forming the edge of a structure, such as a plane of a building, in such a manner that the opening-free web plate 3 forms the edge surface of the plane.
  • An especially advantageous solution is to have side supports 7 and centre supports 8 arranged on the base plate 1 at regular intervals in the longitudinal direction of the beam.
  • the side supports 7 are arranged to determine the position of the web plate 2 equipped with openings 6 in relation to the base plate 1 and the centre parts 8 are, in turn, arranged to determine the location of the bottom surface of the top plate forming the top part 4.
  • the side supports 7 and centre supports 8 can in principle be made in any shape.
  • substantially L-shaped side supports 7 with first free ends 7a arranged to determine the location of the lower edge of the web plate 2 equipped with openings 6 and second free ends 7b correspondingly arranged to determine the location of the top edge of the web plate 2 equipped with openings 6.
  • This type of solution is shown in Figures 1 to 3.
  • the above-mentioned centre supports 8 be substantially elongated parts with one end arranged to support itself on the top surface of the base plate 1 and the other end correspondingly to the bottom surface of the top plate 4 of the finished beam.
  • the side supports 7 and centre supports 8 can be fastened to the base plate 1 in any suitable manner. Welding has been found especially advantageous.
  • the side supports 7 and centre supports 8 support the web parts and the plate forming the top part 4 during manufacturing preferably in such a manner that manufacture can take place without a costly jig, whereby the costs can be reduced in comparison with the prior art.
  • the invention can also be applied in such a manner that the web parts 2, 3 are cut to a curved shape according to the pre-cambering of the beam.
  • the use of the side supports 7 and centre supports 8 is especially advantageous, since the side supports 7 and centre supports 8 support and guide the web parts 2, 3 and the plate forming the top part 4 very effectively during the stage, in which the base plate 1 is bent to the curvature according to the web plates.
  • the plate forming the top part 4 is also shaped by means of the centre supports 8 to the correct curvature.
  • the base plate 1 , web parts 2, 3 and the plate forming the top part 4 are fastened to each other by welding.
  • the beam can also be equipped with end flanges that close the end parts. The end flanges are fastened by welding to the ends of the beam.
  • the above embodiment of the invention is not intended to restrict the invention in any way, but the invention can be modified freely within the scope of the claims.
  • the steel beam of the invention or its details need not be exactly as shown in the figures, and solutions of a different kind are also possible.
  • the side and centre supports need not be exactly parts cut from a planar material as shown in the figures, but can also be made from a rod material.
  • the side and centre supports also need not be separate parts, as shown in the figures, but they can be made into a uni- form part, if such a solution is deemed necessary.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Road Paving Structures (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

The invention relates to a steel beam that is arranged to serve together with concrete as a bearing composite structure for various slab systems, the com-posite structure comprising a base plate (1) and two web parts (2, 3) arranged side by side at a distance from each other and joined at first ends of the web parts by means of a horizontal top part (4), whereby the base plate (1), web parts (2, 3) and horizontal top part (4) are arranged to form a space that can be filled with concrete. One web part (2) is in a manner known per se made slanted relative to the base plate (1) and a corbel flange (5) extending from it and equipped with openings (6). The other web part (3) is, in turn, made sub-stantially perpendicular to the base plate (1) and has no openings.

Description

STEEL BEAM
[0001] The invention relates to a steel beam that is arranged to serve together with concrete as a bearing composite structure for various slab systems, the composite structure comprising a base plate and two web parts arranged side by side at a distance from each other and joined at first ends of the web parts by means of a horizontal top part, whereby the base plate, web parts and horizontal top part are arranged to form a space that can be filled with concrete.
[0002] The invention relates to a beam, on which the bearing struc- tures of a building, such as hollow-core slabs, composite slabs, shell slabs and cast-in-situ, can be supported. During seam grouting or other concreting, the beam is filled with concrete, and after the concrete has hardened, the beam serves as a composite structure. Beams of this type are today quite well known in the field of element structures. Examples of solutions known in the field are those described in Finnish publications 85745 and 92089. The use of a composite structure provides a steel beam that is lighter than the earlier ones and the beam can be used at longer bearings than those in the earlier beams.
[0003] The solutions according to the prior art, such as the solutions known from the above-mentioned publications, work in various structures with- out problems. Various edge structures, which generate additional work, and consequently also additional costs, when the prior art is used, constitute, however, a drawback.
[0004] It is an object of the invention to provide a steel beam, by means of which the drawbacks of the prior art can be eliminated. This is achieved by the present invention. The steel beam of the invention is characterized in that one web part is in a manner known per se made slanted relative to the base plate and a corbel flange extending from it and equipped with openings, and that the other web part is made substantially perpendicular to the base plate and has no openings. [0005] The advantage of the invention over the prior art is above all the fact that the additional costs related to edge structures are eliminated in a very advantageous manner. The steel beam of the invention is also simple, whereby the introduction and use of the invention are advantageous. A yet further advantage is that the beam of the invention, especially a beam intended for edge structures, can be manufactured in the same manufacturing line as the conventional, symmetrical steel-concrete composite beam. The above- mentioned matter makes the steel beam of the invention advantageous to manufacture.
[0006] In the following, the invention will be described in more detail by means of a preferred embodiment described in the attached drawing, in which
Figures 1 is a longitudinal view of the steel beam of the invention, Figure 2 is a perspective view of the steel beam of Figure 1 , Figure 3 is a perspective view of the steel beam of Figures 1 and 2 from another direction. [0007] Figure 1 shows a general view of the steel beam of the invention that is intended to serve together with concrete as a bearing composite structure for various slab systems. The beam comprises a base plate 1 and two web parts 2, 3. The web parts 2, 3 are arranged side by side at a distance from each other and joined at the first edges of the web parts 2, 3 by means of a horizontal top part 4. The web parts 2, 3 and horizontal top part 4 are arranged to form a space that can be filled with concrete. The web part 2 has openings 6, through which concrete can be fed into the space formed by the base plate 1 , web parts 2, 3 and top part 4. The beam also has a corbel flange 5, on which a hollow-core slab, for instance, is arranged. All above-mentioned beam parts can be cut from a steel plate.
[0008] The operation of the steel beam as a composite structure is known to a person skilled in the art and, thus, need not be described in more detain herein. In this context, reference is made for instance to the Finnish publications 85745 and 92089 mentioned earlier. [0009] According to the essential idea of the invention, the second web part 2 is made in a manner known per se into a part that is equipped with openings and slanted relative to the base plate 1 and the corbel flange 5 extending from it. The second web part 3 is, in turn, made into an opening-free part substantially perpendicular to the base plate 1. The above-mentioned mat- ters are shown not only in Figure 1 , but also especially well in Figures 2 and 3. [0010] The above-mentioned solution provides an asymmetric beam that is especially suitable for edge structures. A beam suitable for edge structures refers herein to the beam forming the edge of a structure, such as a plane of a building, in such a manner that the opening-free web plate 3 forms the edge surface of the plane. [0011] An especially advantageous solution is to have side supports 7 and centre supports 8 arranged on the base plate 1 at regular intervals in the longitudinal direction of the beam. The side supports 7 are arranged to determine the position of the web plate 2 equipped with openings 6 in relation to the base plate 1 and the centre parts 8 are, in turn, arranged to determine the location of the bottom surface of the top plate forming the top part 4. The side supports 7 and centre supports 8 can in principle be made in any shape. It has, however, been proven especially advantageous to have substantially L-shaped side supports 7 with first free ends 7a arranged to determine the location of the lower edge of the web plate 2 equipped with openings 6 and second free ends 7b correspondingly arranged to determine the location of the top edge of the web plate 2 equipped with openings 6. This type of solution is shown in Figures 1 to 3.
[0012] It has been found advantageous that the above-mentioned centre supports 8 be substantially elongated parts with one end arranged to support itself on the top surface of the base plate 1 and the other end correspondingly to the bottom surface of the top plate 4 of the finished beam.
[0013] The side supports 7 and centre supports 8 can be fastened to the base plate 1 in any suitable manner. Welding has been found especially advantageous.
[0014] The side supports 7 and centre supports 8 support the web parts and the plate forming the top part 4 during manufacturing preferably in such a manner that manufacture can take place without a costly jig, whereby the costs can be reduced in comparison with the prior art. [0015] The invention can also be applied in such a manner that the web parts 2, 3 are cut to a curved shape according to the pre-cambering of the beam. In this type of solution, the use of the side supports 7 and centre supports 8 is especially advantageous, since the side supports 7 and centre supports 8 support and guide the web parts 2, 3 and the plate forming the top part 4 very effectively during the stage, in which the base plate 1 is bent to the curvature according to the web plates. When the base plate is bent in the manner described above, the plate forming the top part 4 is also shaped by means of the centre supports 8 to the correct curvature.
[0016] The base plate 1 , web parts 2, 3 and the plate forming the top part 4 are fastened to each other by welding. If necessary, the beam can also be equipped with end flanges that close the end parts. The end flanges are fastened by welding to the ends of the beam.
[0017] The above embodiment of the invention is not intended to restrict the invention in any way, but the invention can be modified freely within the scope of the claims. Thus, it is clear that the steel beam of the invention or its details need not be exactly as shown in the figures, and solutions of a different kind are also possible. For instance, the side and centre supports need not be exactly parts cut from a planar material as shown in the figures, but can also be made from a rod material. The side and centre supports also need not be separate parts, as shown in the figures, but they can be made into a uni- form part, if such a solution is deemed necessary.

Claims

1. A steel beam that is arranged to serve together with concrete as a bearing composite structure for various slab systems, the composite structure comprising a base plate (1) and two web parts (2, 3) arranged side by side at a distance from each other and joined at first ends of the web parts by means of a horizontal top part (4), whereby the base plate (1), web parts (2, 3) and horizontal top part (4) are arranged to form a space that can be filled with concrete, characterized in that one web part (2) is in a manner known per se made slanted relative to the base plate (1 ) and a corbel flange (5) ex- tending from it and equipped with openings (6), and that the other web part (3) is made substantially perpendicular to the base plate (1) and has no openings.
2. A steel beam as claimed in claim 1, characterized in that side supports (7) and centre supports (8) are arranged on the base plate (1) at regular intervals in the longitudinal direction of the beam, whereby the side supports (7) are arranged to determine the position of the web plate (2) equipped with openings (6) in relation to the base plate (1) and the centre parts (8) are arranged to determine the location of the bottom surface of the top plate forming the top part (4).
3. A steel beam as claimed in claim 2, characterized in that the side supports (7) are substantially L-shaped parts with one end (7a) arranged to determine the location of the lower edge of the web plate (2) equipped with openings (6) and the other end (7b) correspondingly arranged to determine the location of the top edge of the web plate (2) equipped with openings (6).
4. A steel beam as claimed in claim 3, characterized in that the centre supports (8) are substantially elongated parts with one end arranged to support itself on the top surface of the base plate (1) and the other end correspondingly to the bottom surface of the top plate forming the top surface (4) of the finished beam.
5. A steel beam as claimed in any one of the preceding claims 1 to
4, characterized in that the web plates (2, 3) are cut to a curved shape according to the pre-cambering of the beam.
PCT/FI2003/000399 2002-05-29 2003-05-23 Steel beam WO2003100187A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP03725252A EP1507939B1 (en) 2002-05-29 2003-05-23 Steel beam
AT03725252T ATE474100T1 (en) 2002-05-29 2003-05-23 STEEL BEAM
DE60333360T DE60333360D1 (en) 2002-05-29 2003-05-23 STEEL BEAMS
AU2003227800A AU2003227800A1 (en) 2002-05-29 2003-05-23 Steel beam
DK03725252.5T DK1507939T3 (en) 2002-05-29 2003-05-23 steel beam
NO20045685A NO331579B1 (en) 2002-05-29 2004-12-29 Stable beam, which together with concrete is designed to form a supporting, complex structure for concrete deck systems

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20021010A FI118817B (en) 2002-05-29 2002-05-29 steel beam
FI20021010 2002-05-29

Publications (2)

Publication Number Publication Date
WO2003100187A1 true WO2003100187A1 (en) 2003-12-04
WO2003100187A8 WO2003100187A8 (en) 2004-02-19

Family

ID=8564025

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2003/000399 WO2003100187A1 (en) 2002-05-29 2003-05-23 Steel beam

Country Status (9)

Country Link
EP (1) EP1507939B1 (en)
AT (1) ATE474100T1 (en)
AU (1) AU2003227800A1 (en)
DE (1) DE60333360D1 (en)
DK (1) DK1507939T3 (en)
ES (1) ES2348295T3 (en)
FI (1) FI118817B (en)
NO (1) NO331579B1 (en)
WO (1) WO2003100187A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004090253A1 (en) * 2003-04-10 2004-10-21 Teräspeikko Oy Steel beam
WO2016005660A1 (en) 2014-07-11 2016-01-14 Peikko Group Oy Steel beam
US9945123B2 (en) 2016-09-16 2018-04-17 Peikko Group Oy Steel beam
CN112513387A (en) * 2018-07-31 2021-03-16 法尔福控股合资有限公司 Support beam for a panel system, panel system and method for producing the same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202019103312U1 (en) 2019-06-13 2019-07-26 Gerhard Krummel A voided steel beam as part of a composite structure together with concrete as a filler for the steel beam

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3967560A (en) * 1973-04-03 1976-07-06 Maschinenfabrik Augsburg-Nurnberg Ag Bending beam and method of making same
GB1551031A (en) * 1975-04-15 1979-08-22 Catnic Components Ltd Lintels
GB2027784A (en) * 1978-08-15 1980-02-27 Norcros Investments Ltd Lintels of Sheet Metal

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3967560A (en) * 1973-04-03 1976-07-06 Maschinenfabrik Augsburg-Nurnberg Ag Bending beam and method of making same
GB1551031A (en) * 1975-04-15 1979-08-22 Catnic Components Ltd Lintels
GB2027784A (en) * 1978-08-15 1980-02-27 Norcros Investments Ltd Lintels of Sheet Metal

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004090253A1 (en) * 2003-04-10 2004-10-21 Teräspeikko Oy Steel beam
WO2016005660A1 (en) 2014-07-11 2016-01-14 Peikko Group Oy Steel beam
US9945123B2 (en) 2016-09-16 2018-04-17 Peikko Group Oy Steel beam
CN112513387A (en) * 2018-07-31 2021-03-16 法尔福控股合资有限公司 Support beam for a panel system, panel system and method for producing the same
CN112513387B (en) * 2018-07-31 2023-05-23 法尔福控股合资有限公司 Support beam for a plate system, plate system and method for producing a plate system
US11959278B2 (en) 2018-07-31 2024-04-16 Pfeifer Holding Gmbh & Co. Kg Supporting beam for slab systems, slab system, and method for the production thereof

Also Published As

Publication number Publication date
DK1507939T3 (en) 2010-10-18
FI118817B (en) 2008-03-31
DE60333360D1 (en) 2010-08-26
NO20045685L (en) 2004-12-29
ATE474100T1 (en) 2010-07-15
EP1507939A1 (en) 2005-02-23
FI20021010A0 (en) 2002-05-29
AU2003227800A1 (en) 2003-12-12
ES2348295T3 (en) 2010-12-02
FI20021010A (en) 2003-11-30
WO2003100187A8 (en) 2004-02-19
NO331579B1 (en) 2012-01-30
EP1507939B1 (en) 2010-07-14

Similar Documents

Publication Publication Date Title
US7389620B1 (en) Composite pan for composite beam-joist construction
US7086208B2 (en) Structural member for use in the construction of buildings
KR102317808B1 (en) Steel plate form for RC beams and manufacturing method thereof
JP5943332B2 (en) Point-supported concrete ceiling
US20040231276A1 (en) Structural formwork member
AU2002256575A1 (en) A structural formwork member
EP1507939B1 (en) Steel beam
EP1507937B1 (en) Steel beam
JP2006283414A (en) Structure of continuous composite i-girder bridge
US20230349154A1 (en) Composite Open Web Beam-Joist and Method of Manufacture
US11732475B1 (en) Composite open web beam-joist and method of manufacture
KR102186162B1 (en) Deck-Plate with Spacer for Long Span
EP1507938A1 (en) Method and means for manufacturing steel beam
US8381469B2 (en) Cold formed joist
US20230037589A1 (en) Steel plate built-up beam for steel-concrete composite beam
US20110247296A1 (en) Cold formed joist
JPH05311794A (en) Construction of composite floor slab and deck plate therefor
KR102086588B1 (en) Deck Having Truss Girder With Flat Bar
CN113530054B (en) Steel bar truss floor support plate and system
JP2005133447A (en) Deck plate with reinforcement truss, floor slab, and manufacturing method for deck plate with reinforcement truss
EP1421241A1 (en) A structural formwork member
KR200234547Y1 (en) Deck panel of reinforced concrete slab
JP4753503B2 (en) Deck plate triangular truss
WO1997017509A1 (en) Composite slab, a profile plate thereof and a method for producing a composite slab
KR20230136455A (en) Hybrid Beam Structure Using Thin Steel Plate

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NI NO NZ OM PH PL PT RO RU SC SD SE SG SK SL TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
CFP Corrected version of a pamphlet front page
CR1 Correction of entry in section i

Free format text: IN PCT GAZETTE 49/2003 UNDER (25) REPLACE "FINNISH" BY "ENGLISH"

WWE Wipo information: entry into national phase

Ref document number: 2003725252

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 2003725252

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: JP

WWW Wipo information: withdrawn in national office

Country of ref document: JP