EP0506715A1 - Profiled sheet metal shuttering for composite concrete ceilings. - Google Patents

Profiled sheet metal shuttering for composite concrete ceilings.

Info

Publication number
EP0506715A1
EP0506715A1 EP91900667A EP91900667A EP0506715A1 EP 0506715 A1 EP0506715 A1 EP 0506715A1 EP 91900667 A EP91900667 A EP 91900667A EP 91900667 A EP91900667 A EP 91900667A EP 0506715 A1 EP0506715 A1 EP 0506715A1
Authority
EP
European Patent Office
Prior art keywords
profiled sheet
folds
ribs
formwork
composite
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
EP91900667A
Other languages
German (de)
French (fr)
Other versions
EP0506715B1 (en
Inventor
Helmut Gerhard Katzenberger
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 EP0506715A1 publication Critical patent/EP0506715A1/en
Application granted granted Critical
Publication of EP0506715B1 publication Critical patent/EP0506715B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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

Definitions

  • the invention relates to a formwork made of profiled sheet for composite concrete slabs, with downwardly open, mutually parallel ribs with a trapezoidal cross-section and with the ribs arranged between them, parallel to these, upward-directed folds bent from the sheet, the webs of which abut each other, at least part of the folds being corrugated in the longitudinal direction to improve the bond between the profiled sheet and the concrete.
  • Formwork from profiled sheet for composite concrete slabs are known, for example, from DE-OS 22 52 988 and from AT-PS 365 267.
  • Such formwork made of profiled sheet has the advantage over a wooden formwork that the lower support required during concreting is less bulky, leaving space for work under the concrete slab. It is also advantageous that the profiled sheet absorbs tensile stresses on the lower surface of the finished concrete slab, whereby the thickness of the concrete slab can be reduced.
  • the folds pointing upward have indentations of various types. So shows z. B. the AT-PS 365 267 folds, which are provided with compression depressions on the upper edge of the fold. Using these compression depressions, attempts were made to improve the adhesion between the concrete and the formwork made of profiled sheet metal.
  • Swiss patent specification 644 922 describes a formwork made of profiled sheet with parallel ribs and folds arranged between the ribs, which are formed by two webs lying flat against one another. The folds only have deformations at their upper edges, which should help to improve the bond between the concrete and the metal sheet.
  • the object of the invention is to improve a formwork made from profiled sheet of the type mentioned at the outset in such a way that the bond between the profiled sheet and the concrete is improved.
  • the free edge of the folds describes an approximately horizontal wave in which the ratio of amplitude to half the wavelength is between 0.01 and 0.07.
  • FIG. 1 shows a schematic diagram of the composite concrete floor
  • FIG. 2 shows a plan view of a fold
  • FIG. 3 shows a section through a professional sheet
  • FIG. 4 shows a section through stacked professional sheets.
  • the support beams on which the professional sheets are placed next to one another during the production of a ceiling are not shown in the figures of the drawing, since they are designed according to the known prior art.
  • the profiled sheets can also be connected to one another in a conventional manner by spot welding.
  • each profiled sheet 1 has ribs 3 pointing upwards towards the concrete 2.
  • the ribs 3 are parallel to each other and open at the bottom. In the exemplary embodiment they have a trapezoidal cross section, the longer of the two parallel trapezoidal sides being at the top.
  • these folds 4 are continuously corrugated in the longitudinal direction.
  • the corrugation is such that the upper fold edge 5 deviates the furthest from the vertical longitudinal plane of the fold 4, while the lower fold edge 6 lies practically in the vertical longitudinal plane of the fold 4.
  • the ratio of the amplitude a of a wave described by the upper fold edge 5 to the half wavelength 1/2 of the fold 4 is between 0.01 and 0.07, advantageously around 0.033.
  • the ratio of the web height d of a fold 4 to the height h of a rib 3 is between 0.2 and 0.6, advantageously around 0.3.
  • the profiled sheet 1 is firmly anchored in the concrete 2.
  • Profile sheets 1, as shown in Fig. 4, are stacked one inside the other.

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)
  • Macromonomer-Based Addition Polymer (AREA)

Abstract

Profiled sheet metal shuttering (1) for composite concrete ceilings (2) has parallel ribs (3) of trapezoidal cross-section which open downward and folds (4) in the sheet metal which open upward between the ribs (3). The folds (4) are corrugated in the longitudinal direction. The amplitudes of the generatrices of the corrugations reach a maximum at the free, upper edge (5) of the fold and decrease to zero at the lower edge (6). The ratio of the amplitude (a) to the half-wavelength (1/2) at the upper edge (5) of the fold is between 0.01 and 0.07.

Description

Schalung aus Profilblech für Betonverbunddecken Formwork from profiled sheet for composite concrete ceilings
Die Erfindung bezieht sich auf eine Schalung aus Profil¬ blech für Betonverbunddecken, mit nach unten offenen, zueinander parallelen Rippen mit trapezförmigem Querschnit und mit z ischen den Rippen angeordneten, zu diesen parall verlaufenden, nach oben gerichteten, aus dem Blech gebogenen Falten, deren Stege aneinander anliegen, wobei für die Verbesserung des Verbundes zwischen dem Profilblech und dem Beton mindestens ein Teil der Falten in Längsrichtung gewellt ist.The invention relates to a formwork made of profiled sheet for composite concrete slabs, with downwardly open, mutually parallel ribs with a trapezoidal cross-section and with the ribs arranged between them, parallel to these, upward-directed folds bent from the sheet, the webs of which abut each other, at least part of the folds being corrugated in the longitudinal direction to improve the bond between the profiled sheet and the concrete.
Schalungen aus Profilblech für Betonverbunddecken sind bei¬ sp elsweise aus der DE-OS 22 52 988 und aus der AT-PS 365 267 bekannt. Eine derartige Schalung aus Profilblech hat gegenüber einer Holz erschalung den Vorteil, daß die während des Betonierens erforderliche untere Abstützung weniger sperrig ist, womit unter der Betonplatte Platz zum Arbeiten verbleibt. Weiters ist es vorteilhaft, daß das Profilblech an der unteren Fläche der fertiggestellten Betonplatte Zugspannungen aufnimmt, wodurch die Stärke der Betonplatte verringert werden kann. Zur Aufnahme von Zugbeanspruchungen, die in der Ebene der Betonplatte vor¬ kommen, weisen die nach oben gerichteten Falten Einbeulunge verschiedener Art auf. So zeigt z. B. die AT-PS 365 267 Falten, die mit Stauchvertiefungen am oberen Faltenrand versehen sind. Mittels dieser Stauchvertiefungen versuchte man die Haftung zwischen dem Beton und der Schalung aus Profilblech zu verbessern.Formwork from profiled sheet for composite concrete slabs are known, for example, from DE-OS 22 52 988 and from AT-PS 365 267. Such formwork made of profiled sheet has the advantage over a wooden formwork that the lower support required during concreting is less bulky, leaving space for work under the concrete slab. It is also advantageous that the profiled sheet absorbs tensile stresses on the lower surface of the finished concrete slab, whereby the thickness of the concrete slab can be reduced. In order to absorb tensile stresses that occur in the plane of the concrete slab, the folds pointing upward have indentations of various types. So shows z. B. the AT-PS 365 267 folds, which are provided with compression depressions on the upper edge of the fold. Using these compression depressions, attempts were made to improve the adhesion between the concrete and the formwork made of profiled sheet metal.
Es ist jedoch statisch erwiesen, daß die Zugspannungen am unteren Rand der Falte am größten und am oberen Rand der Falte am kleinsten sind. Die Stauchvertiefungen gemäß der genannten AT-PS befinden sich daher statisch gesehen an einer ungünstigen Stelle der Falte. Die Schweizer Patentschrift 644 922 beschreibt eine Schalung aus Profi lblech mit parallelen Rippen und z schen den Rippen angeordneten Falten, die von zwei flach aneinander anliegenden Stegen gebi ldet werden. Die Falten weisen lediglich an ihren oberen Rändern Ver¬ formungen auf, d e helfen sollen, den Verbund zwischen Beton und Metallblech zu verbessern.However, it has been shown statically that the tensile stresses are greatest at the lower edge of the fold and smallest at the upper edge of the fold. The upsetting depressions according to the mentioned AT-PS are therefore statically seen at an unfavorable point of the fold. Swiss patent specification 644 922 describes a formwork made of profiled sheet with parallel ribs and folds arranged between the ribs, which are formed by two webs lying flat against one another. The folds only have deformations at their upper edges, which should help to improve the bond between the concrete and the metal sheet.
Aus der DE-OS 36 28 861 ist eine Schalung aus Profilblech für Betonverbunddecken mit nach unten offenen, zue i nande r parallelen Rippen der eingangs erwähnten Art bekannt. Zwischen den Rippen verlaufen aus dem Blech gebogene Falten. Die Falten sind in Längsrichtung gewellt.From DE-OS 36 28 861, a formwork made of profiled sheet metal for concrete composite slabs with downwardly open, parallel ribs of the type mentioned at the outset is known. Wrinkles made of sheet metal run between the ribs. The folds are corrugated in the longitudinal direction.
Aufgabe der Erf ndung ist es, eine Schalung aus Profi l¬ blech der eingangs erwähnten Art dahingehend zu ver- bessern, daß der Verbund zwischen dem Profi lblech und dem Beton verbessert wird.The object of the invention is to improve a formwork made from profiled sheet of the type mentioned at the outset in such a way that the bond between the profiled sheet and the concrete is improved.
D es wird erfindungsgemäß dadurch erreicht, daß der freie Rand der Falten eine etwa hor zontale Welle beschreibt, bei der das Verhältnis von Amplitude zur halben Wellenlänge zwischen 0,01 und 0,07 liegt.D It is achieved according to the invention in that the free edge of the folds describes an approximately horizontal wave in which the ratio of amplitude to half the wavelength is between 0.01 and 0.07.
Praktische Versuche haben ergeben, daß nur, wenn das Ver¬ hältnis Amplitude zur Wellenlänge innerhalb dieses Bereiches Liegt, der optimale Verbund zwischen Schalung und Beton erreicht wird.Practical tests have shown that the optimum bond between the formwork and the concrete is achieved only if the ratio of the amplitude to the wavelength lies within this range.
U das Stapeln der Schalung zu erleichtern, ist in einem Ausführungsbeispiel der Erfindung vorgesehen, daß zwischen je zwei Rippen eine Falte außermittig angeordnet ist. Nachfolgend wir ein Ausführungsbeispiel der Erfindung anhand der Figuren der bei liegenden Zeichnung beschrieben.U to facilitate the stacking of the formwork, it is provided in one embodiment of the invention that a fold is arranged off-center between every two ribs. An exemplary embodiment of the invention is described below with reference to the figures of the accompanying drawing.
Die Fig. 1 zeigt ein schematisch gehaltenes Schaubild der Betonverbunddecke, die Fig. 2 zeigt eine Draufsicht auf ein Falte, die Fig. 3 zeigt einen Schnitt durch ein Profi lblec und die Fig. 4 zeigt einen Schnitt durch gestapelte Profi Ibleche.1 shows a schematic diagram of the composite concrete floor, FIG. 2 shows a plan view of a fold, FIG. 3 shows a section through a professional sheet and FIG. 4 shows a section through stacked professional sheets.
Die Trägerbalken, auf die bei der Herstellung einer Decke die Profi Ibleche nebeneinander aufgelegt werden, sind in den Figuren der Zeichnung nicht gezeigt, da sie nach dem bekannten Stand der Technik ausgeführt sind. Die Profi l¬ bleche können ebenso in herkömmlicher Weise durch Punkt¬ schweißen miteinander verbunden sein.The support beams on which the professional sheets are placed next to one another during the production of a ceiling are not shown in the figures of the drawing, since they are designed according to the known prior art. The profiled sheets can also be connected to one another in a conventional manner by spot welding.
Wie aus den Figuren ersichtlich, weist jedes Profi lblech 1 nach oben zum Beton 2 weisende Rippen 3 auf. Die Rippen 3 sind zueinander parallel und nach unten offen. Im Aus¬ führungsbeispiel haben sie Trapezquerschnitt, wobe die längere der beiden parallelen Trapezseiten oben ist.As can be seen from the figures, each profiled sheet 1 has ribs 3 pointing upwards towards the concrete 2. The ribs 3 are parallel to each other and open at the bottom. In the exemplary embodiment they have a trapezoidal cross section, the longer of the two parallel trapezoidal sides being at the top.
Zwischen den Rippen 3 sind ebenfalls nach oben zum Beton 2 gebogene Falten 4 vorgesehen.Between the ribs 3, folds 4 bent upwards towards the concrete are also provided.
Diese Falten 4 sind im Ausführungsbeispiel durchgehend in Längsrichtung gewellt ausgeführt.In the exemplary embodiment, these folds 4 are continuously corrugated in the longitudinal direction.
Die Wellung ist derart, daß der obere Faltenrand 5 am weitesten von der lotrechten Längsm i tte l ebene der Falte 4 abweicht, während der untere Faltenrand 6 praktisch in der lotrechten Längs i tte l ebene der Falte 4 liegt. Das Verhältnis der Amplitude a einer vom oberen Faltenrand 5 beschriebenen Welle zur halben Wellenlänge 1/2 der Falte 4 liegt erfindungsgemäß zwischen 0,01 und 0,07, vorteilhaft bei etwa 0,033.The corrugation is such that the upper fold edge 5 deviates the furthest from the vertical longitudinal plane of the fold 4, while the lower fold edge 6 lies practically in the vertical longitudinal plane of the fold 4. According to the invention, the ratio of the amplitude a of a wave described by the upper fold edge 5 to the half wavelength 1/2 of the fold 4 is between 0.01 and 0.07, advantageously around 0.033.
Das Verhältnis der Steghöhe d einer Falte 4 zur Höhe h einer Rippe 3 liegt zwischen 0,2 und 0,6, vorteilhaft bei etwa 0,3.The ratio of the web height d of a fold 4 to the height h of a rib 3 is between 0.2 and 0.6, advantageously around 0.3.
Nachdem der vergossene Beton abgebunden hat, ist das Profilblech 1 fest im Beton 2 verankert.After the poured concrete has set, the profiled sheet 1 is firmly anchored in the concrete 2.
Da die Falten 4 jeweils um das Maß f von der Mitte zwischen zwei benachbarten Rippen 3 versetzt sind, können dieSince the folds 4 are offset by the dimension f from the center between two adjacent ribs 3, the
Profilbleche 1, wie in der Fig. 4 gezeigt, ineinander gestapelt werden . Profile sheets 1, as shown in Fig. 4, are stacked one inside the other.

Claims

P a t e n t a n s p r ü c h e :P a t e n t a n s r u c h e:
Schalung aus Profilblech für Betonverbunddecken, mit nach unten offenen, zueinander parallelen Rippen mit trapezförmigem Querschnitt und mit zwischen den R ppen angeordneten, zu diesen parallel verlaufenden, nach oben gerichteten, aus dem Blech gebogenen Falten, deren Stege aneinander anliegen, wobei für die Verbesserung des Verbundes zwischen dem Profilblech und dem Beton indestens ein Teil der Falten in Längsrichtung gewellt ist, dadurch gekennzeichnet, daß der freie Rand (5) der Falten (4) eine etwa horizontale Welle beschreibt, bei der das Verhältnis von Amplitude (a) zur halben Wellenlänge (1/2) zwischen 0,01 und 0,07 liegt.Formwork from profiled sheet for composite concrete slabs, with downwardly open, mutually parallel ribs with a trapezoidal cross-section and with folds arranged between the piles, running parallel to them, directed upwards and bent out of the sheet metal, the webs of which lie against each other, whereby to improve the Composite between the profiled sheet and the concrete at least part of the folds is corrugated in the longitudinal direction, characterized in that the free edge (5) of the folds (4) describes an approximately horizontal wave in which the ratio of amplitude (a) to half the wavelength (1/2) is between 0.01 and 0.07.
2. Schalung aus Profilblech für Betonverbunddecken nach Anspruch 1, dadurch gekennzeichnet, daß das Ver¬ hältnis von Amplitude (a) zur halben Wellenlänge CD bei etwa 0,033 liegt.2. Formwork of profiled sheet for composite concrete slabs according to claim 1, characterized in that the ratio of amplitude (a) to half the wavelength CD is about 0.033.
3. Schalung aus Profilblech für Betonverbunddecken, ins¬ besondere nach Anspruch 1 oder 2, mit nach unten offenen,zueinander parallelen Rippen mit trapezförmigem Querschnitt und mit zwischen den Rippen angeordneten, zu diesen parallel verlaufenden, nach oben gerichteten, aus dem Blech gebogenen Falten, deren Stege aneinander a liegen, die Verformungen für die Verbesserung des Verbun zwischen dem Profilblech und dem Beton aufweisen, da¬ durch gekennzeichnet, daß zwischen je zwei Rippen (3) eine Falte (4) außermittig angeordnet ist. 3. Formwork from profiled sheet for composite concrete slabs, in particular according to claim 1 or 2, with downwardly open, mutually parallel ribs with a trapezoidal cross section and with folds arranged between the ribs and running parallel to these, directed upward and bent out of the sheet metal, the webs of which lie against one another, which have deformations for improving the connection between the profiled sheet and the concrete, characterized in that a fold (4) is arranged off-center between two ribs (3).
4. Schalung aus Profilblech für Betonverbunddecken nach Anspruch 3, dadurch gekennzeichnet, daß sämtliche Falten (4) um das gleiche Maß (f) von der Mitte zwischen zwe Rippen (3) in gleicher Richtung versetzt sind.4. Formwork from profiled sheet for composite concrete slabs according to claim 3, characterized in that all folds (4) are offset by the same amount (f) from the center between two ribs (3) in the same direction.
5. Schalung aus Profilblech für Betonverbunddecken nach mindestens einem der Ansprüche 1 bis 4, dadurch gekenn¬ zeichnet, daß das Verhältnis der Höhe (d) der Falten (4) zur Höhe (h) der Rippen (3) z ischen 0,2 und 0,6 liegt.5. Formwork from profiled sheet for composite ceilings according to at least one of claims 1 to 4, characterized gekenn¬ characterized in that the ratio of the height ( d ) of the folds (4 ) to the height (h) of the ribs (3) z ischen 0.2 and 0.6 lies.
6. Schalung aus Profilblech für Betonverbunddecken nach Anspruch 5, dadurch gekennzeichnet, daß das Verhältnis der Höhe (d) der Falten (4) zur Höhe (h) der Rippen (3) bei etwa 0,3 liegt. 6. Formwork from profiled sheet for composite concrete floors according to claim 5, characterized in that the ratio of the height (d) of the folds (4) to the height (h) of the ribs (3) is about 0.3.
EP91900667A 1989-12-19 1990-12-18 Profiled sheet metal shuttering for composite concrete ceilings Expired - Lifetime EP0506715B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT287689 1989-12-19
AT2876/89 1989-12-19
PCT/AT1990/000124 WO1991009185A1 (en) 1989-12-19 1990-12-18 Profiled sheet metal shuttering for composite concrete ceilings

Publications (2)

Publication Number Publication Date
EP0506715A1 true EP0506715A1 (en) 1992-10-07
EP0506715B1 EP0506715B1 (en) 1994-11-02

Family

ID=3541706

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91900667A Expired - Lifetime EP0506715B1 (en) 1989-12-19 1990-12-18 Profiled sheet metal shuttering for composite concrete ceilings

Country Status (4)

Country Link
EP (1) EP0506715B1 (en)
AT (1) ATE113686T1 (en)
DE (1) DE59007660D1 (en)
WO (1) WO1991009185A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100458039C (en) * 2002-12-22 2009-02-04 邱则有 Component for cast-in-place concrete
WO2006064989A1 (en) * 2004-12-16 2006-06-22 B.B.M Korea Co., Ltd Deck plate for reinforced concrete structure and structure construction method thereof

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3812636A (en) * 1971-05-26 1974-05-28 Robertson Co H H Sheet metal decking unit and composite floor construction utilizing the same
DE2252988A1 (en) * 1972-10-28 1974-05-09 Bernhard Dr Ing Unger COMPOSITE PANEL MADE OF CONCRETE AND A TRAPEZOIDAL SHEET
AT390093B (en) * 1985-08-27 1990-03-12 Katzenberger Helmut PROFILE SHEET FOR CONCRETE COMPOSITE CEILINGS
AT390095B (en) * 1985-11-13 1990-03-12 Katzenberger Helmut Shuttering arrangement comprising profiled metal sheet for concrete composite floors
PT83026A (en) * 1986-07-21 1987-01-26 Pentti Vainionpaa Compound slab section

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9109185A1 *

Also Published As

Publication number Publication date
ATE113686T1 (en) 1994-11-15
EP0506715B1 (en) 1994-11-02
WO1991009185A1 (en) 1991-06-27
DE59007660D1 (en) 1994-12-08

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