EP1678389B1 - Selbsttragende stahlschalung mit grosser spannweite - Google Patents

Selbsttragende stahlschalung mit grosser spannweite Download PDF

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Publication number
EP1678389B1
EP1678389B1 EP04817218.3A EP04817218A EP1678389B1 EP 1678389 B1 EP1678389 B1 EP 1678389B1 EP 04817218 A EP04817218 A EP 04817218A EP 1678389 B1 EP1678389 B1 EP 1678389B1
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EP
European Patent Office
Prior art keywords
profiled panel
panel according
lateral
profiled
central area
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.)
Active
Application number
EP04817218.3A
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English (en)
French (fr)
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EP1678389A1 (de
Inventor
Léopold SOKOL
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.)
ArcelorMittal SA
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ArcelorMittal SA
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Publication date
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Publication of EP1678389A1 publication Critical patent/EP1678389A1/de
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Publication of EP1678389B1 publication Critical patent/EP1678389B1/de
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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
    • 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
    • E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0443—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section
    • E04C2003/0473—U- or C-shaped

Definitions

  • the present invention relates to a profile panel for long-span formwork intended, in particular, for the manufacture of concrete slabs.
  • floors are made in the form of concrete slabs, pouring concrete on a formwork consisting of an assembly of metal panels whose ends rest on transverse beams through connecting pieces.
  • a formwork consisting of an assembly of metal panels whose ends rest on transverse beams through connecting pieces.
  • the panels constitute a platform of circulation and work for the personnel who intervenes on the building site.
  • metal panels remain in place and serve as additional reinforcement to the concrete slab.
  • Such formwork is called "freestanding formwork”.
  • omega-shaped metal section panels which have a ribbed upper central zone framed by two inclined cores each extended by a ribbed lower horizontal flange.
  • Each core has two longitudinal folds, one disposed near the central beach and the other near the bottom flange, intended to increase rigidity.
  • the ribs of the upper central beach are arranged near the banks thereof and the ribs of the lower flanges are arranged at mid-width of the flanges.
  • the object of the present invention is to overcome these disadvantages by proposing a profiled panel optimized so, in particular, to be able to reach a range of up to 6m, and easy to achieve by profiling.
  • the part of the lateral wing intended to work in compression is comprised in the upper half of the lateral wing close to the upper central zone, and the part of the lateral wing intended to work in tension comprises at least the lower half of the lateral wing adjacent to a lower sole.
  • At least one side wing may comprise a vertical notch disposed between the at least one stiffening fold and the corresponding lower sole.
  • At least one bottom flange comprises on its outer lateral edge an edge stiffener constituted for example by a raised edge.
  • the bottom of at least one sole is flat and does not include an intermediate stiffener.
  • the angle ⁇ that forms a lateral wing with a plane parallel to the upper central range is between 74.8 ° and 79.8 °.
  • the width P e of the lateral band of the upper central region extending between the lateral edge of the upper central zone and the edge of the longitudinal rib disposed on the side of said lateral edge of the upper central zone is greater than 8% of the width l pc of the upper central range, and the width l c of the notched zone of the upper central range is preferably greater than 60% and more preferably 75% of the width l pc of said central range.
  • the length of the profiled panel may be greater than 5.7 m.
  • the profiled panel is for example made of steel and preferably of galvanized steel, and can be manufactured by profiling and its thickness is preferably between 0.9 mm and 1.5 mm.
  • the profiled panel thus produced has the advantage of making it possible to increase the payload and to increase the range of the formwork, while facilitating the profiling operation, in particular by simplifying the profiling tool required.
  • the profiled panel is particularly suitable for the realization of floor slabs for car parks, industrial buildings, sales stores, storage warehouses, or any other similar building.
  • the invention also relates to a floor comprising a concrete slab cast on a self-supporting formwork consisting of adjacent profiled panels according to the invention, assembled by seaming, supported by transverse beams.
  • a profile panel for formwork according to the invention has a transverse profile of the omega type as represented in figure 1 . Due to this omega profile, the profiled panel comprises, on its longitudinal central portion, an upper central region 1 extending in the length direction.
  • This upper central zone 1 comprises two longitudinal ribs 4 and 4 'separated by a notch 5. These longitudinal ribs 4, 4', as well as the notch 5, are intended to give the upper central zone 1, sufficient rigidity so that, when the panel is placed on beams during the manufacture of a floor, the surface constituted by the upper central area 1 can serve as a working surface and traffic area for workers working on the site.
  • the central area 1 is extended on either side, according to its lateral edges, by two inclined wings 2 and 2 ', extending towards the underside of the panel and towards the outside of the panel, so as to form a trapezium flared downward (relative to the orientation of the figure which corresponds to the orientation of the panel when it is used).
  • the lateral wings 2 and 2 'each comprise a longitudinal stiffener 6 and 6' extending over the entire length of the panel.
  • Each stiffener 6 or 6 ' consists of two folds which form a slight recess in the side wing.
  • Each lateral wing 2 and 2 ' extends in its lower part by a sole 3 or 3', horizontal, extending outwardly of the panel.
  • the lateral edges of each of the flanges are extended by flanges 9 or 9 'raised upwards. These flanges 9 or 9 'raised up serve as stiffeners.
  • the panels 11 undergo bending forces such that the upper portions 13 of the lateral wings are subjected to compression stresses, and the lower portions 14 of the lateral wings are subjected to tensile stresses, especially in the longitudinal direction.
  • the relative importance of the tensile and compression zones depends on different geometric parameters such as wing height, concrete layer thickness, panel length and width. Those skilled in the art can determine from these parameters what is the importance of the areas subjected to traction and the importance of the areas subjected to compression.
  • the profiled panels according to the invention comprise wings 2, 2 'whose only part intended to work in compression comprises a longitudinal stiffener 6, 6', and whose part intended to work in tension, does not comprise any longitudinal stiffener and therefore is flat at least in the transverse direction.
  • Each wing 2 or 2 'therefore has in its upper part an upper range 7 or 7' plane, of width a s and, in its lower part, a lower range 8 or 8 'plane at least in the transverse direction.
  • the upper ranges 7 or 7 ' are separated from the lower ranges 8 or 8' by the stiffeners 6 or 6 ', of width U ra .
  • the lower range 8, 8 'plane in the transverse direction is not necessarily plane in the longitudinal direction. Indeed, the mechanical behavior of the profiled panel can be improved by providing a vertical detent on the part of the wing which is in the part intended to work in tension.
  • Vertical notching means a notch consisting of notches each extending in the direction of the height of the wing.
  • the zone intended to work in compression represents at most half the height of the wing, and the part intended for to work in traction is at least half the height of the wing. Therefore, the width a s of the upper range 7 or 7 'of the wing is preferably less than half the width of the wing, and the width of the lower range 8 or 8' of the wing is greater than half the width of the wing.
  • the wings thus made have an improved fire resistance.
  • the inventors have also found that by appropriately choosing the angle ⁇ that forms a wing with a horizontal plane parallel to the plane of the panel, that is to say in the plane of the upper central range, one could optimize the weight of the sheet and the weight of concrete, and ultimately optimize the useful reach of a floor element.
  • the angle ⁇ must be between 60 ° and 80 °. If the angle is too small, although the weight of the sheet is reduced, the weight of the concrete is substantially increased and the wear is reduced.
  • calculation codes are provided for angles greater than 60% and the use of lower angles requires prior agreement. If the angle is greater than 80 °, it is no longer possible to stack and depilate the panels easily. But more specifically, the inventors have found that the range was optimized for an angle ⁇ between 74.8 ° and 79.8 °.
  • the soles 3 and 3 'of the profiled panel are flat and do not have central longitudinal stiffeners. However, each sole 3 or 3 'has on its outer side edge, an edge stiffener. This edge stiffener is constituted by a raised edge 9, 9 '.
  • the inventors have indeed found that by not providing a stiffener in the axial portion of the sole, but providing an edge stiffener, improved the mechanical behavior of the panel, and it facilitated the implementation, in particular by rendering the junctions between two adjacent panels more sealed, which is useful when pouring concrete, while resulting in a profile easier to achieve by profiling.
  • the width P e of the portion 21 or 21 'of the upper central zone 1 situated between the rim of the upper central zone 1 and the edge of a longitudinal rib 4 or 4' may be greater than or equal to 8% of the width I pc of the upper central range 1.
  • the width l c of the notched zone 5 of the upper range 1 may have a width greater than or equal to 60% or better 75% of the width l pc of the range. upper central 1.
  • the height h of a side wing 2 may be slightly less than the height h 'of the other side wing 2', the difference in height being equal to the thickness of the sheet of which the profiled panel is formed.
  • the width Sm of the lateral sole 3 corresponding to the first lateral wing 2 may be slightly less than the width s m 'of the lateral sole 3' corresponding to the other lateral wing so that when two panels are arranged adjacently, the side flange of one of the panels can fit perfectly into the side flange of the adjacent panel.
  • the two upper central areas of the two panels are at the same height.
  • the profiled panel has a useful width which is in general between 650 mm and 800 mm, a height h of between 200 mm and 220 mm, and may have a length exceeding 5.7 m and even reach 6.2 m, way to allow to realize formwork having a range of about 6 m.
  • the usable width corresponds to the module or step of the self-supporting formwork and corresponds to the distance l between the axes of two adjacent panels or, which amounts to the same, the axes of the two lower flanges of the same panel.
  • the panel is made of galvanized steel and manufactured by profiling a sheet of thickness between 0.9 mm and 1.5 mm.
  • the thickness must be greater than 0.9 mm to ensure sufficient rigidity.
  • the thickness should preferably be less than 1.5 mm in order to limit the weight of the panels. Indeed, it must be able to be manipulated manually to be implemented, especially in multi-storey buildings.
  • the dimensions of the longitudinal stiffeners 4, 4 'of the upper central zone 1 are preferably such that the opening U sp is between 25 and 45 mm, the width of the bottom U ip is between 0 and 15 mm, and the height H rp is between 10 and 25 mm.
  • the dimensions of the longitudinal stiffeners 6, 6 'of the wings 2, 2' are such that the width U ra is between 20 and 40 mm, and the height H ra is between 15 and 25 mm.
  • the width of the stiffener of the sole edge b is between 15 and 25 mm.
  • the stiffeners are arranged such that the distance P e between the rim of a longitudinal stiffener 4 or 4 'of the upper central region 1 and the rim of said upper region 1 is between 40 and 60 mm, the distance P i between the flange of the same stiffener 4 or 4 'and the beginning of the notched range 5 is between 40 and 60 mm.
  • the distance a s between the upper edge of the lateral flange 2 or 2 'and the longitudinal stiffener 6 or 6' of the lateral flange is preferably between 40 and 80 mm.
  • the exact values of the parameters that define the geometry of the profiled panel can be optimized by calculation or experimentation so as to obtain the panel having the best possible mechanical behavior over the most important length.
  • the panel provides useful ranges of about 6 m.
  • its profile consists only of simple folds that can be easily manufactured by profiling.

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  • 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)

Claims (16)

  1. Profiliertes Paneel zur Verschalung mit großer Spannweite, das ein Profil des Typs Omega hat, wobei das profilierte Paneel dadurch gekennzeichnet ist, dass es aufweist:
    - einen einzigen oberen horizontalen Zentralbereich (1), der sich in Längsrichtung des profilierten Paneels erstreckt und der zwei Längsrillen (4, 4') aufweist, die über eine transversale Kerbe (5) separiert sind,
    - zwei laterale schräge Flügel (2, 2'), die den Zentralbereich (1) auf jeder Seite des Zentralbereichs verlängern, sich nach unten hin und zu dem Äußeren des Zentralbereichs hin erstrecken und jeweils wenigstens eine longitudinale Versteifungsknickung (6, 6') aufweisen,
    - zwei untere horizontale Flansche (3, 3'), die die lateralen Flügel lateral verlängern und die sich zu dem Äußeren des profilierten Paneels erstrecken,
    wobei wenigstens ein longitudinaler Versteifungsknick (6, 6') jedes lateralen Flügels (2, 2') in jenem Abschnitt des lateralen Flügels (2, 2') angeordnet ist, der dazu bestimmt ist, Drucklast aufzunehmen, wenn das profilierte Paneel an einer Struktur montiert und mit Beton überzogen ist, und wobei der Abschnitt, der dazu bestimmt ist, Zuglast aufzunehmen, keinen longitudinalen Versteifungsknick aufweist,
    wobei der Abschnitt des lateralen Flügels (2, 2'), der dazu bestimmt ist, Drucklast aufzunehmen, in der oberen Hälfte des besagten lateralen Flügels (2, 2') benachbart zu dem oberen Zentralbereich (1) vorliegt, und wobei der Abschnitt des besagten lateralen Flügels (2, 2'), der dazu bestimmt ist, Zuglast aufzunehmen, wenigstens die untere Hälfte des besagten lateralen Flügels (2, 2') benachbart zu einem unteren Flansch aufweist.
  2. Profiliertes Paneel gemäß Anspruch 1, dadurch gekennzeichnet, dass wenigstens ein lateraler Flügel (2, 2') eine vertikale Rille aufweist, die zwischen wenigstens einem Versteifungsknick (6, 6') und dem korrespondierenden unteren Flansch (3, 3') angeordnet ist.
  3. Profiliertes Paneel gemäß irgendeinem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass wenigstens ein unterer Flansch (3, 3') an seinem äußeren lateralen Rand eine Randversteifung aufweist.
  4. Profiliertes Paneel gemäß Anspruch 3, dadurch gekennzeichnet, dass die Randversteifung eines unteren Flanschs (3, 3') von einem hochgebogenen Rand (9, 9') gebildet ist.
  5. Profiliertes Paneel gemäß Anspruch 3 oder Anspruch 4, dadurch gekennzeichnet, dass der Boden wenigstens eines Flanschs (3, 3') eben ist und keine zwischenliegende Verstärkung aufweist.
  6. Profiliertes Paneel gemäß irgendeinem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der Winkel α, den ein lateraler Flügel (2, 2') mit einer zum horizontalen Zentralbereich (1) parallelen Ebene einschließt, zwischen 74,8° und 79,8° beträgt.
  7. Profiliertes Paneel gemäß irgendeinem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Breite Pe des lateralen Streifens (21, 21') des horizontalen Zentralbereichs, der sich zwischen dem lateralen Rand des Zentralbereichs (1) und dem Rand der Längsrille (4, 4') erstreckt, die auf Seiten des besagten lateralen Rands des Zentralbereichs angeordnet ist, größer als 8% der Breite Ipc des Zentralbereichs (1) ist.
  8. Profiliertes Paneel gemäß Anspruch 7, dadurch gekennzeichnet, dass die Breite Ic der gekerbten Zone (5) des Zentralbereichs größer als 60% der Breite Ipc des besagten Zentralbereichs (1) ist.
  9. Profiliertes Paneel gemäß Anspruch 8, dadurch gekennzeichnet, dass die Breite Ic der gekerbten Zone größer als 75% der Breite Ipc des Zentralbereichs (1) ist.
  10. Profiliertes Paneel gemäß irgendeinem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass seine Länge größer als 5,7 m ist.
  11. Profiliertes Paneel gemäß irgendeinem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass es aus Stahl ist.
  12. Profiliertes Paneel gemäß Anspruch 11, dadurch gekennzeichnet, dass aus galvanisiertem Stahl ist.
  13. Profiliertes Paneel gemäß Anspruch 10 oder Anspruch 11, dadurch gekennzeichnet, dass seine Dicke zwischen 0,9 mm und 1,4 mm ist.
  14. Profiliertes Paneel gemäß irgendeinem der Ansprüche 1 bis 13, dadurch gekennzeichnet, dass es aus Profilmaterial hergestellt ist.
  15. Selbsttragende Verschalung, die aus benachbarten profilierten Paneelen zusammengesetzt ist, die durch Schweißung zusammenmontiert sind und die von Querträgern gehalten sind, dadurch gekennzeichnet, dass wenigstens ein profiliertes Paneel einem gemäß irgendeinem der Ansprüche 1 bis 14 entspricht.
  16. Boden mit einer Betonplatte, die auf eine selbstragende Verschalung gemäß Anspruch 15 gegossen ist.
EP04817218.3A 2003-10-14 2004-10-12 Selbsttragende stahlschalung mit grosser spannweite Active EP1678389B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0312000A FR2860814B1 (fr) 2003-10-14 2003-10-14 Coffrage metallique autoportant a grande portee
PCT/FR2004/002587 WO2005038159A1 (fr) 2003-10-14 2004-10-12 Coffrage metallique autoportant a grande portee

Publications (2)

Publication Number Publication Date
EP1678389A1 EP1678389A1 (de) 2006-07-12
EP1678389B1 true EP1678389B1 (de) 2016-06-08

Family

ID=34355466

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04817218.3A Active EP1678389B1 (de) 2003-10-14 2004-10-12 Selbsttragende stahlschalung mit grosser spannweite

Country Status (5)

Country Link
EP (1) EP1678389B1 (de)
ES (1) ES2588928T3 (de)
FR (1) FR2860814B1 (de)
PL (1) PL1678389T3 (de)
WO (1) WO2005038159A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013019497B4 (de) * 2013-11-21 2020-08-06 Kingspan GmbH Als Beton-Stahl-Verbundkonstruktion ausgebildete Dach- oder Deckenplatte
DE102017214271A1 (de) * 2017-08-16 2019-02-21 Thyssenkrupp Ag Stahltrapezprofil und seine Verwendung
WO2019136026A1 (en) * 2018-01-02 2019-07-11 Patco, Llc Metal decking

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1236603A (fr) * 1959-06-11 1960-07-22 Acieroid élément de plancher et ses applications
US3653171A (en) * 1969-06-18 1972-04-04 Bethlehem Steel Corp Spiral wire fastener for sheets of material
US4453364A (en) * 1980-05-27 1984-06-12 Ting Raymond M L Corrugated steel decking section
US4630414A (en) * 1980-09-17 1986-12-23 Ting Raymond M L Cellular steel decking
US4741134A (en) * 1984-07-02 1988-05-03 Consolidated Systems, Inc. Composite metal/concrete bar joist floor and method
GB8628436D0 (en) * 1986-11-27 1986-12-31 Quikspan Construction Ltd Structural member
US5056348A (en) * 1989-06-01 1991-10-15 Robertson-Ceco Corporation Method of making a profiled sheet metal building unit
DE4215686C1 (de) * 1992-05-14 1993-11-11 Hoesch Siegerlandwerke Gmbh Verbindung von Stahltrapezprofilen mit einer Unterkonstruktion bei einer als Beton-Stahl-Verbundkonstruktion ausgebildeten Dach- oder Deckenplatte
DE4414410C2 (de) * 1994-04-26 1996-06-13 Krupp Ag Hoesch Krupp Verbindung von Stahltrapezprofilen mit einer Unterkonstruktion bei einer als Beton-Stahl-Verbundkonstruktion ausgebildeten Dach- oder Deckenplatte

Also Published As

Publication number Publication date
FR2860814A1 (fr) 2005-04-15
EP1678389A1 (de) 2006-07-12
ES2588928T3 (es) 2016-11-07
WO2005038159A1 (fr) 2005-04-28
FR2860814B1 (fr) 2006-02-24
PL1678389T3 (pl) 2016-12-30

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