EP0555232A1 - Structure d'ossature d'une poutre d'assemblage. - Google Patents

Structure d'ossature d'une poutre d'assemblage.

Info

Publication number
EP0555232A1
EP0555232A1 EP91916212A EP91916212A EP0555232A1 EP 0555232 A1 EP0555232 A1 EP 0555232A1 EP 91916212 A EP91916212 A EP 91916212A EP 91916212 A EP91916212 A EP 91916212A EP 0555232 A1 EP0555232 A1 EP 0555232A1
Authority
EP
European Patent Office
Prior art keywords
main beam
concrete
suitably
frame structure
binding units
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.)
Granted
Application number
EP91916212A
Other languages
German (de)
English (en)
Other versions
EP0555232B1 (fr
Inventor
Seppo Salo
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0555232A1 publication Critical patent/EP0555232A1/fr
Application granted granted Critical
Publication of EP0555232B1 publication Critical patent/EP0555232B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • E04C3/293—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
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
    • E04C5/065—Light-weight girders, e.g. with precast parts

Definitions

  • the subject matter of the invention is the frame construction of a connector beam which is intended for use along with concrete as a binding and primary structure in plate connection points of plate sets or the like, comprising a main beam structure, a bottom surface which functions during concrete casting as at least part of the formwork surface, and binding units which secure the adhesion of concrete and the main beam structure.
  • Connector beams of the said type manufactured of steel and concrete are used e.g. to form the frame of a prefabricated building, in which case they, fixed to rest on vertical columns, function as the primary horizontal structures of intermediate and/or primary floors.
  • connector beams of the said type have the advantage of the capability to achieve essentially lower structures.
  • steel structures In comparison with steel structures, they have the advantage of essentially better fire resistance.
  • a connector beam of steel and concrete is previously known e.g. from Finnish Patent Application No. 900985.
  • the frame structure is made of steel and com- prises a beam with two web parts, one edge of which forms a horizontal cantilever flange part extending outwards.
  • the web parts are fixed at an angle to the flange part and the web parts are fixed adjacent to each other in an inclined position towards each other.
  • the web parts are connected at the edges closest to each other by the horizontal upper part and at the edges of the web parts farther from each other which are connected to the cantilever flange parts by a plate welded to the web parts.
  • holes have been perforated near the upper edges or in the horizontal upper part of the web parts for filling with concrete the space limited by the upper part of the web parts, the web parts and the plate functioning as the bottom. In the edges of the holes, cantilevers have been formed projecting from the level of the web parts or the upper part to secure the adhesion effect of concrete and steel.
  • the frame structure presented above or corresponding frame structures of prior art are characterized in that the primary beam of the frame structure, such as a steel beam or a corresponding steel profile, forms at least a part of the external surface of the connec ⁇ tor beam resulting from concrete casting. Because the strength of steel is significantly decreased by a rise in temperature, the visible parts of a steel beam or a corresponding structure must be protected from fire. Fire shielding is provided by the kind of structures presented, either by covering the visible part of the cantilever flange or the like with a fireproof plate, insulator, paint, or spray. For aesthetic reasons, the said fire shielding must often be also covered by a so-called counter ceiling. In addition to the fire shielding measures mentioned above, the construction according to Finnish Patent Application No.900985 requires also several operations of different kinds such as moulding or working, welding, and perforating the plate material, etc.
  • the purpose of the frame structure according to the present invention is to produce a decisive improvement to the disadvantages presented above and thus to raise the level of technology in the field.
  • the method according to the invention is characterized in that the bottom surface is connected to the main beam structure by binding units in a way that the bottom surface is essentially separate from the said main beam structure, wherein the connector beam resulting from concrete casting has a concrete layer in between the main beam structure and the said bottom surface.
  • the most important advantages of the frame structure according to the invention are the simplicity of installation, casting and other corresponding opera- tions connected with its use and the fire resistance feature of the connector beam formed thereby, because it is possible according to the invention to arrange the said main beam structure to remain completely within concrete thus being surrounded on all sides by concrete which has better fire resistance. Further ⁇ more, it is simple to manufacture a frame structure according to the invention e.g. at an engineering workshop, because e.g. standardized steel beams or the like can be used as the main beam structure. Thus the pre-elevating of the frame structure to compensate for detrimental deflection can often be arranged in the easiest way by treating the said bottom surface only. By the beam structure according to the invention, also considerable savings of steel material are gained as compared with conventional beam structures.
  • Figure 1 illustrates the perspective image of a frame structure according to the invention in the connecting point
  • Figure 2 illustrates a cross section of a connector beam formed by a frame structure according to Fig. 1
  • Figure 3 illustrates the frame structure of Fig. 2 as seen from direction A
  • Figure 4 illustrates a cross section of an edge beam formed by a frame structure according to the invention
  • Figure 5 illustrates the frame structure in Fig. 4 as seen from direction B
  • Figure 6 illustrates the cross section of an alternative frame structure according to the invention
  • Figure 7 illustrates the frame structure of Fig. 6 as seen from direction C
  • Figure 8 illustrates the perspective image of an alternative frame structure according to the invention, situated in the connection point
  • Figure 9 illustrates the cross section of a connect ⁇ or beam formed by a frame structure according to Fig. 8, and
  • Figure 10 illustrates the frame structure of Fig. 9 as seen from direction D.
  • the frame structure 1, 2, 3 in the connection point L of plates 6 comprises a main beam structure which in the presented appli ⁇ cation consists of one main beam 1, bottom surface 2 which in connection with concrete casting functions as at least part of the formwork surface, and binding units 3 for securing the adhesion of concrete 4 and main beam 1.
  • the said bottom surface 2 is arranged to extend at least on one side of connector beam 1, 2, 3, 4 over the said connection point L, wherein a side surface 2a has been fixed on the corresponding side of bottom surface 2 which side surface contacts plate 6 connec ⁇ ted to connection point L.
  • the said bottom surface 2 and the adjacent side surface/surfaces 2a are in the applications presented in Figs. 1 to 10 fixed under the bottom surface 6a of the plates 6 connected to connection point L.
  • an I-beam 1 has been used as a main beam because of its advantageous structure.
  • Fig. 1 plates 6 to be connected to connection point L have been installed on both sides of the frame structure 1, 2 , 3 which has been pre ⁇ fabricated, most suitably at an engineering workshop or the like, and installed to rest on vertical beams (not shown in Figure 1) .
  • the figure illustrates also the most commonly used tie bars 5 which secure the connection of connector beam 1, 2, 3, 4 and the plates 6 connected to it.
  • the connector beam 1, 2, 3, 4 can be formed along with the surface casting 4a or concrete 4.
  • the bottom surface 2 of the frame structure 1, 2, 3 forms an essentially close part of the formwork surface, wherein concrete 4 which is to be cast on connection point L and which along with frame structure 1, 2, 3 forms connector beam 1, 2, 3, 4 is limited on its lower part by the said bottom surface 2, side surfaces 2a connected to bottom surface 2, and the end surfaces 1, 2, 3, 4 thus formed, the compression-strained part of the structure is the surface casting layer 4a and the upper part of the connector beam, and the exten- sion-strained part of the structure is the lower part of the connector beam, excluding said bottom surface 2 in a fire situation.
  • the said binding units are fixed to form a diagonal structure 3 for stiffening frame structure l, 2, 3 which diagonal structure is connected to the axial edge surfaces la 1 and lb 1 and the bottom surface 2 of both flange parts la and lb of the I-beam functioning as the main beam, essentially in vertical direction.
  • bottom surface 2 and the adjacent side surfaces 2a have been manufactured from a solid plate material.
  • frame structure 1, 2, 3 has been arranged to function as an edge beam in a way that side surface 2a connected with bottom surface 2 is fixed to extend above upper surface ly of main beam 1.
  • the above-mentioned diagonal structure 3 has been mounted on one side of I-beam 1 which functions as the main beam.
  • single bars 3 functioning as binding units are arranged at certain intervals on one side of I-beam in the axial direction which connect the said side surface 2a to the upper flange la of I-beam 1.
  • bottom surface 2 and the adjacent side surface 2a are manufac ⁇ tured from a solid plate material.
  • bottom surface 2 is connected with I-beam 1 by single bars 3 arranged at certain intervals in the axial direction of the main beam connected with side surfaces 2a connected with bottom surface 2.
  • a structure of this kind is applicable for use especially at plate loads which are small with respect to the size of I-beam 1 or in connection with concrete plates 6 to be casted on the site.
  • brace bars 7 parallel to and of equal length as I-beam 1 are fixed to connect with the upper surface ly of lower flange lb of I-beam 1.
  • the structure corresponds entirely to the application shown in Figs. 1 to 3, and it is intended for use especially with plate loads relatively high with respect to the size of the I-beam used.
  • the invention is not limited to the above-mentioned applications but it can be modified within the basic idea even to a great extent.
  • the shape of the bottom surface and/or the adjacent side surface or surfaces can be, as distin ⁇ guished from the shapes presented, arched, angular, or the like.
  • the main beam used in the frame structure can be a T- or L-shaped or tubular beam or the like, or it can be a bar or the like manufactured from a solid material, in which case the main beam structure may comprise one or more main beams of the aforesaid kind.
  • the height of the main beam structure used may vary, in which case it can be also essentially lower than the connection height of the plates to be connected.
  • the binding units and/or the diagonal structures composed thereof can be installed also in a slanted manner wherein they are connected on one hand to the web part and lower flange and on the other hand to the side surface connected to the bottom surface of e.g. the I-beam presented.
  • the main beam structure such as the I-beam or the like in the application presented, can naturally be fixed in an asymmetric or slanted position e.g. towards the bottom surface or the plates to be connected or the like.
  • the side parts that are connected to the bottom surface and extend outside the connection point may naturally also be fixed to the bottom surface by welded angle irons or other corresponding arrangements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Building Environments (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)

Abstract

Structure d'ossature d'une poutre d'assemblage (1, 2, 3) conçue pour être utilisée avec du béton (4) à des points d'assemblage (L) de plateau (6) d'une série de plateaux ou autre construction similaire, comme structure de fixation primaire, comprenant une structure de poutre principale (1), une surface de fond (2) qui forme pendant le coulage du béton (4) au moins une partie de la surface de coffrage, et des unités de fixation (3) qui garantissent l'adhérence du béton (4) et de la structure de poutre principale (1). Conformément à cette invention, ladite surface de fond (2) est fixée à ladite structure de poutre principale (1) par lesdites unités de fixation (3), de telle sorte que la surface inférieure (2) est en fait distincte de la structure de poutre principale (1), la poutre d'assemblage (1, 2, 3, 4) qui résulte du coulage du béton (4) comportant ainsi une couche de béton (4) entre ladite structure de poutre principale (1) et ladite surface de fond (2).
EP91916212A 1990-10-30 1991-09-26 Poutre d'assemblage Expired - Lifetime EP0555232B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI905347A FI84847C (fi) 1990-10-30 1990-10-30 Stomkonstruktion foer samverkansbalk.
FI905347 1990-10-30
PCT/FI1991/000294 WO1992008018A1 (fr) 1990-10-30 1991-09-26 Structure d'ossature d'une poutre d'assemblage

Publications (2)

Publication Number Publication Date
EP0555232A1 true EP0555232A1 (fr) 1993-08-18
EP0555232B1 EP0555232B1 (fr) 1996-01-17

Family

ID=8531331

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91916212A Expired - Lifetime EP0555232B1 (fr) 1990-10-30 1991-09-26 Poutre d'assemblage

Country Status (6)

Country Link
EP (1) EP0555232B1 (fr)
AU (1) AU8513791A (fr)
DE (1) DE69116566D1 (fr)
FI (1) FI84847C (fr)
SE (1) SE9301306D0 (fr)
WO (1) WO1992008018A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1669505A1 (fr) 2004-12-02 2006-06-14 Velthorst Beheer B.V. Poutre composite en acier-béton avec support ignifuge pour éléments de plafond

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2206830A1 (fr) * 1997-05-15 1998-11-15 Le Groupe Canam Manac Inc. Colonne en acier pour immeuble eleve
AU2002227295A1 (en) * 2000-12-08 2002-06-18 Diversakore Llc Composite structural framing system
DE50302102D1 (de) 2002-10-05 2006-03-30 Dywidag Systems Int Gmbh Stahl-Verbund-Konstruktion für Geschossdecken
JP7185616B2 (ja) * 2017-02-28 2022-12-07 株式会社竹中工務店 鉄骨コンクリート梁の施工方法、及び鉄骨コンクリート梁の設計方法
SE543184C2 (sv) * 2019-02-14 2020-10-20 Vaestsvenska Staalkonstruktioner Ab Brandsäker bjälklagsbalk av stål med vertikala liv, horisontella flänsar och ett värmeisolerande material i ett utrymme mellan flänsarna

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2042616A (en) * 1979-01-11 1980-09-24 Gkn Mills Building Serv Reinforcement for Cast Concrete Beams
GB2060730B (en) * 1979-09-15 1983-05-25 Tinsley Building Prod Ltd Concrete floors
GB2077792B (en) * 1980-03-22 1983-06-08 Tinsley Building Prod Ltd Casting reinforced concrete floors
DE3909849A1 (de) * 1988-06-07 1989-12-14 Andrae Hans Peter Traeger aus stahlbeton mit plattenbalken-querschnitt

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9208018A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1669505A1 (fr) 2004-12-02 2006-06-14 Velthorst Beheer B.V. Poutre composite en acier-béton avec support ignifuge pour éléments de plafond

Also Published As

Publication number Publication date
FI84847C (fi) 1992-01-27
DE69116566D1 (de) 1996-02-29
SE9301306D0 (sv) 1993-04-21
WO1992008018A1 (fr) 1992-05-14
FI905347A (fi) 1992-05-01
FI84847B (fi) 1991-10-15
EP0555232B1 (fr) 1996-01-17
FI905347A0 (fi) 1990-10-30
AU8513791A (en) 1992-05-26

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