EP0385998B1 - Structure de plancher pour immeubles - Google Patents

Structure de plancher pour immeubles Download PDF

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Publication number
EP0385998B1
EP0385998B1 EP88906197A EP88906197A EP0385998B1 EP 0385998 B1 EP0385998 B1 EP 0385998B1 EP 88906197 A EP88906197 A EP 88906197A EP 88906197 A EP88906197 A EP 88906197A EP 0385998 B1 EP0385998 B1 EP 0385998B1
Authority
EP
European Patent Office
Prior art keywords
beams
primary
concrete
floor structure
primary beams
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
Application number
EP88906197A
Other languages
German (de)
English (en)
Other versions
EP0385998A1 (fr
Inventor
Gunnar Johansson
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.)
Ovako Steel Profiler AB
Original Assignee
Ovako Steel Profiler AB
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 Ovako Steel Profiler AB filed Critical Ovako Steel Profiler AB
Priority to AT88906197T priority Critical patent/ATE77116T1/de
Publication of EP0385998A1 publication Critical patent/EP0385998A1/fr
Application granted granted Critical
Publication of EP0385998B1 publication Critical patent/EP0385998B1/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
    • E04B5/36—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
    • E04B5/38—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor with slab-shaped form units acting simultaneously as reinforcement; Form slabs with reinforcements extending laterally outside the element
    • E04B5/40—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor with slab-shaped form units acting simultaneously as reinforcement; Form slabs with reinforcements extending laterally outside the element with metal form-slabs
    • 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

Definitions

  • This invention relates to a floor structure for buildings comprising primary beams, secondary beams supported by the primary beams and a concrete slab cast in place in a trapezoidal metal form supported by the primary and secondary beams, the secondary beams being placed between the upper and lower flanges of the primary beams having, the upper flanges of the secondary beams being on a significantly lower level than the upper flanges of the primary beams so that the form, having a profile parallel to that of the primary beams creates concrete beams which are parallel to the primary beams with the major parts of said concrete beams located significantly below the level of the upper flanges of the primary beams, while otherwise the concrete slab is located significantly above the primary beams.
  • the floor structure comprises a set of materials, where the best qualities of the various materials are combined so that the floor structure, besides being technically acceptable and allowing large spans to be covered, are also economically advantageous and can shorten the time required for construction. Furthermore, a floor structure designed according to the invention is easy to dismantle and has high recovery value, qualities which are becoming increasingly essential.
  • Figure 1 shows a side view of a portion of the floor structure.
  • Figure 2 is a cross section along Line 2-2 in Figure 1.
  • Figure 3 is a cross section as in Figure 2 of an alternative embodiment of the invention.
  • Figure 1 shows a portion of a parking garage and a portion of the floor structure used in its construction.
  • Primary beams 11, 12 and 13 are placed on uprights 14, 15.
  • Secondary beams 16-20 in the form of rolled I-beams are placed between the primary beams and are oriented perpendicular to the latter.
  • Drain conduits 22 are placed between the rows of uprights 14 and 15.
  • the primary beams are welded I-beams as shown in Figure 2 with arched upper flanges 23 and straight lower flanges 24 as shown in Figure 1.
  • Figure 2 shows two coaxial secondary beams, on one hand, beam 17, which is shown in Figure 1 and, on the other hand, beam 25. They have end flanges designated 26 and 27, which rest on supports 28, 29 welded onto the web 30 of the primary beam 12. Secondary beams 17, 25 are held together by bolts 31. Shims 32, 33 are placed between the webs of the primary beams 12 and the flanges 26, 27 of the secondary beams.
  • trapezoidal corrugated plates 35, 36 and 37 Placed on top of the secondary beams are trapezoidal corrugated plates 35, 36 and 37 in lengths which are as long as the primary beams.
  • An overlapping joint between the two plates 35, 36 is shown at 38 in Figure 2.
  • the plates are attached to each other by bolts, as indicated by 43, in several places, an the plate deck created is used as a lost form for a concrete slab 44 which is cast in place.
  • the trapezoidal-profile plate forms beams which, since the upper flanges 42 of the secondary> beams 16-20 are on a substantially lower level than the upper flanges 23 of the primary beams, will be located essentially beneath the upper flanges 23 of the primary beams.
  • These concrete beams have all been designated 47.
  • the concrete slab 44 is reinforced against cracking with a reinforcing mesh 46.
  • the sheet metal form around the beams 47 of the concrete slab 44 is load bearing, but the beams may also be strengthened by longitudinal reinforcing rods 48.
  • the reinforcement in the concrete slab 44 and its beams 47 is extremely simple. It can therefore be installed rapidly, which reduces the time required for construction.
  • the upper flanges of the primary beams 12 are arched in the central portion located between the secondary beams, as shown in Figure 1.
  • the arch is essentially the shape that the plates 35, 36, 37 would assume under their own weight if they were placed so that they were supported only on a center support. Outside the secondary beams 17 and 19, the upper flanges 23 are straight but inclined.
  • the connection between the arched portion and both straight portions is preferably asymptotic.
  • the attachment of the secondary beams 16-20 joins the arched shape of the upper flanges of the primary- beams. This arch facilitates the installation of the plate, and contributes a slope suitable for the deck of a parking garage.
  • the drain conduits 22 run connected to drain pipes, along with the support pillar 15 for the primary beams.
  • the drain conduits drain not only the surface of the concrete, but also the formwork plate if moisture develops between the formwork plate and the concrete. The plate therefore constitutes an extra sealing layer.
  • Figure 3 shows an alternative embodiment, in which the trapezoidal corrugated plate has an upper flange 50, which is wide enough to completely cover the upper flange 23 of the primary beam.
  • the upper flange 50 has transverse reinforcing embossments to increase its rigidity, and the seams 51, 52 are vertical in the middle of the lower flanges, and extend at least to the level of the upper flanges 50 or somewhat higher, as shown in the figure.
  • Each plate therefore comprises one-half narrow lower flanges 53, 54 on either side of a oxide upper flange 50.
  • the vertical seams form reinforcements for the concrete.
  • a lower flange 52 and : lower flange 53 on a plate next to it therefore together form one complete bottom flange.
  • a reinforcement against cracking in the form of a mesh can also be used, as shown in Figure 2.
  • the sheet metal in the vertical seams can also be provided with small bosses or indentations to increase its adhesion to the concrete. This design of the plates shown in Fig 3 can shorten the time required for construction even further.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Bridges Or Land Bridges (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Floor Finish (AREA)

Abstract

Structure de planches pour un immeuble, par exemple un parking, comprenant des poutres primaires (12), des poutres secondaires (16, 20) suspendues aux poutres primaires ainsi qu'un coffrage perdu de métal en feuilles placé sur les poutres secondaires. On coule une dalle de béton en place dans le coffrage, lequel est trapézoïdal et ondulé de manière que les poutres (47) de béton soient réalisées dans les rebords inférieurs du coffrage. On abaisse les poutres primaires dans les poutres primaires de manière que les poutres en béton (47) soient placées sous le niveau des ailes supérieures (53) des poutres primaires.

Claims (1)

1. Structure de plancher pour immeubles comprenant des poutres primaires (12), des poutres secondaires (16-20) supportées par les poutres primaires et une couche de béton (44) coulée sur place dans une forme trapézoïdale en métal supportée par les poutres primaires et secondaires, les poutres secondaires étant placées entre les brides supérieure et inférieure des poutres primaires (23, 24) dont les brides supérieures sont situées à un niveau nettement plus bas que les brides supérieures des poutres primaires de façon que la forme possédant un profil parallèle à celui des poutres primaires crée des poutres de béton (47) qui sont parallèles aux poutres primaires et situées nettement en-dessous du niveau des brides supérieures des poutres primaires, tandis que, autrement, la couche de béton (44) est située nettement au-dessus des poutres primaires, caractérisée en ce que la forme trapézoïdale en métal (35, 36, 37, 41; 50, 51, 52, 53, 54) n'est reliée ni aux poutres primaires (12) ni aux poutres secondaires (16-20) et peut être déplacée librement sur les poutres primaires et secondaires.
EP88906197A 1987-06-29 1988-06-29 Structure de plancher pour immeubles Expired EP0385998B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88906197T ATE77116T1 (de) 1987-06-29 1988-06-29 Bodenstruktur fuer gebaeude.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8702678 1987-06-29
SE8702678A SE461108B (sv) 1987-06-29 1987-06-29 Bjaelklag foer byggnader

Publications (2)

Publication Number Publication Date
EP0385998A1 EP0385998A1 (fr) 1990-09-12
EP0385998B1 true EP0385998B1 (fr) 1992-06-10

Family

ID=20369002

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88906197A Expired EP0385998B1 (fr) 1987-06-29 1988-06-29 Structure de plancher pour immeubles

Country Status (7)

Country Link
EP (1) EP0385998B1 (fr)
DE (1) DE3871960T2 (fr)
DK (1) DK164959C (fr)
FI (1) FI896312A7 (fr)
NO (1) NO895223D0 (fr)
SE (2) SE461108B (fr)
WO (1) WO1989000224A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NZ240185A (en) * 1990-10-11 1993-11-25 Robert Cameron Reid Concrete floor system with metal formwork and bar chairs
WO2006064989A1 (fr) * 2004-12-16 2006-06-22 B.B.M Korea Co., Ltd Banche de dalle pour structure en beton arme et procede de construction de la structure

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US602274A (en) * 1898-04-12 Sheet or plate girder
DE1056347B (de) * 1958-04-25 1959-04-30 Maschf Augsburg Nuernberg Ag Verfahren zum Vorspannen von Stahltraegern, insbesondere von Traegern einer Verbundplatte
US3147571A (en) * 1959-03-20 1964-09-08 Bethlehem Steel Corp Concrete bridging beam form
US3251167A (en) * 1963-04-05 1966-05-17 Robertson Co H H Composite concrete floor construction and unitary shear connector
US3462902A (en) * 1965-12-20 1969-08-26 Robertson Co H H Composite floor construction
US3527007A (en) * 1968-08-12 1970-09-08 Ira J Mcmanus Steel joist connection and end connection therefor
US3720029A (en) * 1970-07-02 1973-03-13 Robertson Co H H Flooring section and composite floor utilizing the same
CA1172463A (fr) * 1983-01-17 1984-08-14 Hambro Structural Systems Ltd. Poutre a semelle double
US4653237A (en) * 1984-02-29 1987-03-31 Steel Research Incorporated Composite steel and concrete truss floor construction

Also Published As

Publication number Publication date
FI896312A0 (fi) 1989-12-28
SE461109B (sv) 1990-01-08
DK164959C (da) 1993-02-15
DK660089A (da) 1989-12-22
WO1989000224A1 (fr) 1989-01-12
DK660089D0 (da) 1989-12-22
SE8702678D0 (sv) 1987-06-29
DE3871960D1 (de) 1992-07-16
FI896312A7 (fi) 1989-12-28
SE8900176L (sv) 1989-01-19
SE461108B (sv) 1990-01-08
EP0385998A1 (fr) 1990-09-12
DE3871960T2 (de) 1993-02-18
SE8702678L (sv) 1988-12-30
DK164959B (da) 1992-09-21
NO895223L (no) 1989-12-22
NO895223D0 (no) 1989-12-22
SE8900176D0 (sv) 1989-01-19

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