EP0124707A2 - Roof covering system with roof elements for a waffle slab construction - Google Patents

Roof covering system with roof elements for a waffle slab construction Download PDF

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Publication number
EP0124707A2
EP0124707A2 EP84102342A EP84102342A EP0124707A2 EP 0124707 A2 EP0124707 A2 EP 0124707A2 EP 84102342 A EP84102342 A EP 84102342A EP 84102342 A EP84102342 A EP 84102342A EP 0124707 A2 EP0124707 A2 EP 0124707A2
Authority
EP
European Patent Office
Prior art keywords
webs
web
roof
riser
elements
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
EP84102342A
Other languages
German (de)
French (fr)
Other versions
EP0124707A3 (en
EP0124707B1 (en
Inventor
Wolfgang Bures
Karlfriedrich Fick
Manfred Müller
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.)
Aluform System-Technik Pohl & Cokg GmbH
Vaw Aluminium AG
Original Assignee
Vereinigte Aluminium Werke AG
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 Vereinigte Aluminium Werke AG filed Critical Vereinigte Aluminium Werke AG
Priority to AT84102342T priority Critical patent/ATE37414T1/en
Publication of EP0124707A2 publication Critical patent/EP0124707A2/en
Publication of EP0124707A3 publication Critical patent/EP0124707A3/en
Application granted granted Critical
Publication of EP0124707B1 publication Critical patent/EP0124707B1/en
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D3/00—Roof covering by making use of flat or curved slabs or stiff sheets
    • E04D3/36—Connecting; Fastening
    • E04D3/361—Connecting; Fastening by specially-profiled marginal portions of the slabs or sheets
    • E04D3/362—Connecting; Fastening by specially-profiled marginal portions of the slabs or sheets by locking the edge of one slab or sheet within the profiled marginal portion of the adjacent slab or sheet, e.g. using separate connecting elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D3/00—Roof covering by making use of flat or curved slabs or stiff sheets
    • E04D3/24—Roof covering by making use of flat or curved slabs or stiff sheets with special cross-section, e.g. with corrugations on both sides, with ribs, flanges, or the like
    • E04D3/30—Roof covering by making use of flat or curved slabs or stiff sheets with special cross-section, e.g. with corrugations on both sides, with ribs, flanges, or the like of metal

Definitions

  • the invention relates to roof elements in cassette design, each consisting of a lower flange, two webs, each a connecting flange adjoining the webs and fastening elements.
  • roof elements are known, during the assembly of which no folding or flanging work on the connecting flanges is necessary.
  • a disadvantage of the known roof elements is that, due to the shape of the fastening elements, the forces to be derived act eccentrically to the axis of gravity of the fastening elements and cause an additional bending moment therein.
  • this shape of the sheet with external loading from below results in the fact that only the web of the sheet below is used to derive the forces.
  • the cross-sectional shape of the bead arranged in the upper region of this web is unfavorable with regard to the derivation of transverse forces, since the bead compresses.
  • the size of the flat web surface between this bead and the lower flange also means that only small transversal forces can be transmitted. If the load capacity of the fastening area is exceeded, the roof element detaches from the fastening elements - there is no residual load capacity.
  • the object of the present invention is to avoid the disadvantages mentioned above and to improve the known roof elements in such a way that they are absolutely securely anchored even in the event of high wind loads. This object is achieved by the features mentioned in the claims. It has been shown that in the roof element of the type according to the invention, the forces to be dissipated are guided through the center of gravity of the fastening elements by the special shape of the fastening elements and, by additional shaping of a triangular bead in the web of the sheet above, both webs can be used for load transfer from below from below .
  • the triangular shape of this bead and the reshaping of the bead in the web of the underlying sheet metal to form a trapezoid shape reinforce the roof element against pressure loads and enable a favorable dissipation of transverse forces.
  • the transmittable transverse forces are increased by shortening the flat web surfaces, and the inclination of the crimp legs causes the webs to be pressed against the fastening elements after the load capacity of the fastening region has been exceeded, i.e. a residual load capacity when the roof element is loaded from below.
  • FIG. 1 consists of the lower flange 2, two webs 3, 4 with integrally formed connecting flanges 8, 9 and fastening element 1.
  • the web 3 there is a trapezoidal bead 5, in the web 4 a triangular bead 6, which is arranged on the bottom snap their shape into the hooks 10, 11 of the fastening element 1.
  • a hook-shaped pawl 7 is arranged on the connecting flange 9, which engages in the trapezoidal bead 5 under the connecting flange 8 and acts as a pressure compensation chamber against the ingress of water.
  • the connection is established by simply screwing the nested parts together with the fastening element 1 when several roof elements are installed.
  • the latched roof elements are supported with the beads 5, 6 on the hooks 10, 11 of the fastening element 1, so that when the roof element is externally loaded from below, the forces are evenly introduced into both webs 3, 4 and the fastening element 1 is loaded centrally.
  • the beads 5, 6 act under this type of load as elastically embedded compression rods and are used to stiffen the webs 3, 4.
  • the inclination angles ⁇ , ⁇ of the webs 3, 4 in the area of the beads 5, 6 in the preferred range of 40-50 and the small length of the flat web areas 3, 4 under the beads 5, 6 enable a favorable derivation of the transverse forces that occur .
  • the webs 3, 4 are clamped under the hooks 10, 11 of the fastening element 1 after the load capacity of the fastening area has been exceeded - that is to say a residual load capacity - when the roof element is loaded from below.
  • the clamping of the individual roof elements is stiff enough and enables immediate loading without additional connection work.

Abstract

1. A roof covering system for waffle slab construction, the roof covering consisting of interlocking plates which are secured in place without any folding or flanging being necessary, each plate consisting of a lower or middle web (2), two riser webs (3, 4), extending outwards from which are connecting webs (8, 9), the system also comprising anchoring devices ; the first riser web (3), which engages under a retainer rib (11) of the anchoring device (1), having a trapezoidal channel (5) ; the connecting flange (9) of the second riser web (4) having a catch-hook (7) which engages in the trapezoidal channel (5) under the connecting web (8), which it embraces, characterized in that the anchoring device (1) has a second retainer rib (10) projecting in the opposite direction and lower down than the first retainer rib (11) ; the second riser web (4) having a triangular channel (6) which engages under the second retainer rib (10) of the anchoring device (1) ; the two riser webs (3, 4) having the same lengths and being disposed symmetrically with respect to the anchoring device (1).

Description

Die Erfindung betrifft Dachelemente in Kassettenbauweise, bestehend aus jeweils einem Untergurt, zwei Stegen, jeweils einem an die Stege anschließenden Verbindungsflansch und Befestigungselementen.The invention relates to roof elements in cassette design, each consisting of a lower flange, two webs, each a connecting flange adjoining the webs and fastening elements.

Nach DE 31 49 341 sind Dachelemente bekannt, bei deren Montage keine Falz- oder Bördelarbeiten an den Verbindungsflanschen notwendig sind. Ein Nachteil der bekannten Dachelemente liegt darin, daß durch die Formgebung der Befestigungselemente die abzuleitenden Kräfte exzentrisch zur Schwereachse der Befestigungselemente wirken und darin ein zusätzliches Biegemoment hervorrufen. Außerdem ergibt sich aus dieser Formgebung des Bleches bei äußerer Belastung von unten, daß nur der Steg des untenliegenden Bleches zur Ableitung der Kräfte herangezogen wird. Die Querschnittsform der im oberen Bereich dieses Steges angeordneten Sicke ist ungünstig hinsichtlich der Ableitung von Querkräften, da sich die Sicke zusammendrückt. Die Größe der ebenen Stegfläche zwischen dieser Sicke und dem Untergurt bedingt ebenfalls nur geringe übertragbare Querkräfte. Beim Überschreiten der Tragkapazität des Befestigungsbereiches löst sich das Dachelement von den Befestigungselementen - ein Resttragvermögen ist nicht vorhanden.According to DE 31 49 341, roof elements are known, during the assembly of which no folding or flanging work on the connecting flanges is necessary. A disadvantage of the known roof elements is that, due to the shape of the fastening elements, the forces to be derived act eccentrically to the axis of gravity of the fastening elements and cause an additional bending moment therein. In addition, this shape of the sheet with external loading from below results in the fact that only the web of the sheet below is used to derive the forces. The cross-sectional shape of the bead arranged in the upper region of this web is unfavorable with regard to the derivation of transverse forces, since the bead compresses. The size of the flat web surface between this bead and the lower flange also means that only small transversal forces can be transmitted. If the load capacity of the fastening area is exceeded, the roof element detaches from the fastening elements - there is no residual load capacity.

Aufgabe der vorliegenden Erfindung ist es, die o.a. Nachteile zu vermeiden und die bekannten Dachelemente so zu verbessern, daß sie auch bei hohen Windbelastungen absolut sicher verankert sind. Diese Aufgabe wird erfindungsgemäß durch die in den Ansprüchen genannten Merkmale gelöst. Es hat sich gezeigt, daß beim Dachelement der erfindungsgemäßen Art durch die besondere Formgebung der Befestigungselemente die abzuleitenden Kräfte durch die Schwerachse der Befestigungselemente geführt und durch zusätzliches Ausformen einer dreieckförmigen Sicke im Steg des obenliegenden Bleches beide Stege bei äußerer Belastung von unten zur Lastabtragung herangezogen werden können.The object of the present invention is to avoid the disadvantages mentioned above and to improve the known roof elements in such a way that they are absolutely securely anchored even in the event of high wind loads. This object is achieved by the features mentioned in the claims. It has been shown that in the roof element of the type according to the invention, the forces to be dissipated are guided through the center of gravity of the fastening elements by the special shape of the fastening elements and, by additional shaping of a triangular bead in the web of the sheet above, both webs can be used for load transfer from below from below .

Außerdem wird durch die Dreieckform dieser Sicke und durch das Umformen der Sicke im Steg des untenliegenden Bleches zu einer Trapezform das Dachelement gegen Druckbeanspruchung ausgesteift und eine günstige Ableitung von Querkräften ermöglicht. Durch die Verkürzung der ebenen Stegflächen werden die übertragbaren Querkräfte vergrößert und durch die Neigung der Sickenschenkel ein Anpressen der Stege an die Befestigungselemente nach dem Überschreiten der Tragkapazität des Befestigungsbereiches, also ein Resttragvermögen bei Belastung des Dachelementes von unten, erreicht.In addition, the triangular shape of this bead and the reshaping of the bead in the web of the underlying sheet metal to form a trapezoid shape reinforce the roof element against pressure loads and enable a favorable dissipation of transverse forces. The transmittable transverse forces are increased by shortening the flat web surfaces, and the inclination of the crimp legs causes the webs to be pressed against the fastening elements after the load capacity of the fastening region has been exceeded, i.e. a residual load capacity when the roof element is loaded from below.

Die Verlegemöglichkeit des Dachelementes ohne Falz- und Bördelarbeiten soll erhalten bleiben.The possibility of laying the roof element without folding and flanging work should be retained.

Es hat sich auf Grund zahlreicher Testversuche gezeigt, daß mit dieser Konstruktion eine feste Verbindung hergestellt werden kann, die sofort nach der Montage belastbar ist. Es sind keine zusätzlichen Verbindungsarbeiten notwendig. Die Haltekräfte im Befestigungsbereich sind um ca.100% vergrößert.It has been shown on the basis of numerous test attempts that a fixed connection can be made with this construction, which can be loaded immediately after assembly. No additional connection work is necessary. The holding forces in the fastening area are increased by approx. 100%.

Im folgenden wird die Erfindung anhand eines Ausführungsbeispieles nähererläutert. Es zeigen:

  • Fig. 1 = Querschnitt durch ein erfindungsgemäßes Dachelement,
  • Fig. 2 = Teil-Querschnitt durch zwei benachbarte Dachelemente im Bereich des Befestigungselementes.
The invention is explained in more detail below using an exemplary embodiment. Show it:
  • 1 = cross section through a roof element according to the invention,
  • Fig. 2 = partial cross-section through two adjacent roof elements in the area of the fastening element.

Das Dachelement gemäß Fig. 1 besteht aus dem Untergurt 2, zwei Stegen 3,4 mit angeformten Verbindungsflanschen 8,9 und Befestigungselement 1. In dem Steg 3 ist eine trapezförmige Sicke 5, in dem Steg 4 eine dreieckförmige Sicke 6 angeordnet, die auf Grund ihrer Formgebung in die Haken 10,11 des Befestigungselements 1 einrasten. Am Verbinduncsflansch9 ist eine hakenförmige Klinke 7 angeordnet, die in die trapezförmige Sicke 5 unter dem Verbindungsflansch 8 eingreift und als Druckausgleichskammer gegen das Eindringen von Wasser wirkt.1 consists of the lower flange 2, two webs 3, 4 with integrally formed connecting flanges 8, 9 and fastening element 1. In the web 3 there is a trapezoidal bead 5, in the web 4 a triangular bead 6, which is arranged on the bottom snap their shape into the hooks 10, 11 of the fastening element 1. A hook-shaped pawl 7 is arranged on the connecting flange 9, which engages in the trapezoidal bead 5 under the connecting flange 8 and acts as a pressure compensation chamber against the ingress of water.

Bei der Montage mehrerer Dachelemente wird gemäß Fig. 2 die Verbindung durch einfaches Eindrehen der ineinandergesteckten Teile unter Einbeziehung des Befestigungselements 1 hergestellt. Die eingerasteten Dachelemente stützen sich mit den Sicken 5,6 an den Haken 10,11 des Befestigungselements 1 ab, wodurch bei äußerer Belastung des Dachelementes von unten eine gleichmäßige Einleitung der Kräfte in beide Stege 3,4 erfolgt und das Befestigungselement 1 zentrisch belastet wird. Durch ihre Querschnittsform wirken die Sicken 5,6 bei dieser Art der Belastung als elastisch gebettete Druckstäbe und werden zur Aussteifung der Stege 3,4 herangezogen. Durch die Neigungswinkel α,β der Stege 3,4 im Bereich der Sicken 5,6 im bevorzugten Bereich von 40-50 und durch die geringe Länge der ebenen Stegflächen 3,4 unter den Sicken 5,6 wird eine günstige Ableitung der auftretenden Querkräfte ermöglicht. Ferner wird dadurch ein Verklammern der Stege 3,4 unter den Haken 10,11 des Befestigungselements 1 nach dem Überschreiten der Tragkapazität des Befestigungsbereiches - also ein Resttragvermögen - bei Belastung des Dachelementes von unten erreicht.2, the connection is established by simply screwing the nested parts together with the fastening element 1 when several roof elements are installed. The latched roof elements are supported with the beads 5, 6 on the hooks 10, 11 of the fastening element 1, so that when the roof element is externally loaded from below, the forces are evenly introduced into both webs 3, 4 and the fastening element 1 is loaded centrally. Due to their cross-sectional shape, the beads 5, 6 act under this type of load as elastically embedded compression rods and are used to stiffen the webs 3, 4. The inclination angles α, β of the webs 3, 4 in the area of the beads 5, 6 in the preferred range of 40-50 and the small length of the flat web areas 3, 4 under the beads 5, 6 enable a favorable derivation of the transverse forces that occur . Furthermore, the webs 3, 4 are clamped under the hooks 10, 11 of the fastening element 1 after the load capacity of the fastening area has been exceeded - that is to say a residual load capacity - when the roof element is loaded from below.

Die Verklammerung der einzelnen Dachelemente ist steif genug und ermöglicht ohne zusätzliche Verbindungsarbeiten eine sofortige Belastung.The clamping of the individual roof elements is stiff enough and enables immediate loading without additional connection work.

Claims (2)

1. Dachelemente in Kassettenbauweise, bestehend aus jeweils einem Untergurt, zwei Stegen, jeweils einem an die Stege anschließenden Verbindungsflansch und Befestigungselementen, dadurch gekennzeichnet, daß die Stege (3,4) im wesentlichen gleich lang sind und mit nach außen hin offenen Verbindungsflanschen (8,9) symmetrisch zum Befestigungselement (1) angeordnet sind, daß an dem Steg (3) eine trapezförmige Sicke (5), an dem Steg (4) eine dreieckförmige Sicke (6) und am Verbindungsflansch des benachbarten Dachelements (9) eine hakenförmige Klinke (7) angeordnet ist, die den Verbindungsflansch (8) umfaßt, wobei die Stege der benachbarten Dachelemente (3,4) unter den Haken (10,11) am Befestigungselement (1) verankert sind.1. Roof elements in cassette design, each consisting of a lower flange, two webs, each having a connecting flange adjoining the webs and fastening elements, characterized in that the webs (3, 4) are essentially of the same length and with connecting flanges open to the outside (8 , 9) are arranged symmetrically to the fastening element (1), that a trapezoidal bead (5) on the web (3), a triangular bead (6) on the web (4) and a hook-shaped pawl on the connecting flange of the adjacent roof element (9) (7) is arranged, which comprises the connecting flange (8), the webs of the adjacent roof elements (3, 4) being anchored under the hooks (10, 11) on the fastening element (1). 2. Dachelemente nach Anspruch 1, dadurch gekennzeichnet, daß die Neigungswinkel (α,β) der Stege (3,4) im Bereich der Sicken (5,6) im Bereich von 40-50° liegen.2. Roof elements according to claim 1, characterized in that the inclination angle (α, β) of the webs (3,4) in the area of the beads (5,6) are in the range of 40-50 °.
EP84102342A 1983-05-07 1984-03-05 Roof covering system with roof elements for a waffle slab construction Expired EP0124707B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84102342T ATE37414T1 (en) 1983-05-07 1984-03-05 ROOF COVERING SYSTEM WITH ROOF ELEMENTS IN CASSETTE CONSTRUCTION.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3316856 1983-05-07
DE3316856A DE3316856A1 (en) 1983-05-07 1983-05-07 ROOF ELEMENTS IN CASSETTE DESIGN

Publications (3)

Publication Number Publication Date
EP0124707A2 true EP0124707A2 (en) 1984-11-14
EP0124707A3 EP0124707A3 (en) 1986-01-08
EP0124707B1 EP0124707B1 (en) 1988-09-21

Family

ID=6198507

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84102342A Expired EP0124707B1 (en) 1983-05-07 1984-03-05 Roof covering system with roof elements for a waffle slab construction

Country Status (3)

Country Link
EP (1) EP0124707B1 (en)
AT (1) ATE37414T1 (en)
DE (1) DE3316856A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0218412A2 (en) * 1985-09-26 1987-04-15 Ltd. Gantan Beauty Industry Co. Roof structure and fixture therefor
EP0306880A1 (en) * 1987-09-08 1989-03-15 ISCOM S.r.l. Modular roofing panel
EP0413500A1 (en) * 1989-08-16 1991-02-20 Maunsell Structural Plastics Limited Building system
FR2652846A1 (en) * 1989-10-09 1991-04-12 Velut Jean Compression reinforcement of a thin sheet-metal girder
WO2006117605A2 (en) * 2005-04-29 2006-11-09 Iscom S.P.A. Roofing assembly having high resistance for use with roofs of residential and industrial buildings
EP3103936A4 (en) * 2014-01-27 2017-10-11 Guives Girona, S.A. Modular metal covering for buildings
FR3064508A1 (en) * 2017-03-30 2018-10-05 Bacacier 3 S DEVICE FOR CONNECTING TWO METAL SHEETS

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3442398A1 (en) * 1984-11-20 1986-05-28 Kaiser Aluminium Europe Inc., 4000 Düsseldorf HOLDING ELEMENT FOR SELF-SUPPORTING COMPONENTS, SUCH AS ROOF AND WALL COVERINGS OR THE LIKE, AND COVER FOR THESE
DE3442407A1 (en) * 1984-11-20 1986-05-28 Kaiser Aluminium Europe Inc., 4000 Düsseldorf HOLDING ELEMENT FOR SELF-SUPPORTING ELEMENTS, LIKE ROOF ELEMENTS, WALL COVERINGS AND THE LIKE
DE4040215A1 (en) * 1990-12-15 1992-06-17 Franz Zambelli Sheet metal roof cladding - incorporates interlocking panels clipped on shaped ribbing, with overlapping edges
CN104594570B (en) * 2015-01-20 2018-03-27 北京交通大学 The vertical seam metal roofing board system of one koji

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1321562A (en) * 1962-02-08 1963-03-22 Assembly of plates by their ribbed side edges
FR2057728A5 (en) * 1969-08-19 1971-05-21 Vaw Ver Aluminium Werke Ag
NL7210077A (en) * 1972-07-20 1974-01-22
DE3149341A1 (en) * 1981-12-12 1983-06-23 Vaw-Leichtmetall Gmbh, 5300 Bonn KEYSTONE ROOF ELEMENT

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1018980A (en) * 1964-03-18 1966-02-02 Handford Ind Pty Ltd Improvements in and relating to interlocking sheet panels

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1321562A (en) * 1962-02-08 1963-03-22 Assembly of plates by their ribbed side edges
FR2057728A5 (en) * 1969-08-19 1971-05-21 Vaw Ver Aluminium Werke Ag
NL7210077A (en) * 1972-07-20 1974-01-22
DE3149341A1 (en) * 1981-12-12 1983-06-23 Vaw-Leichtmetall Gmbh, 5300 Bonn KEYSTONE ROOF ELEMENT

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0218412A2 (en) * 1985-09-26 1987-04-15 Ltd. Gantan Beauty Industry Co. Roof structure and fixture therefor
EP0218412A3 (en) * 1985-09-26 1989-03-15 Motokatsu Funaki Roof structure and fixture therefor
EP0306880A1 (en) * 1987-09-08 1989-03-15 ISCOM S.r.l. Modular roofing panel
EP0413500A1 (en) * 1989-08-16 1991-02-20 Maunsell Structural Plastics Limited Building system
FR2652846A1 (en) * 1989-10-09 1991-04-12 Velut Jean Compression reinforcement of a thin sheet-metal girder
WO2006117605A2 (en) * 2005-04-29 2006-11-09 Iscom S.P.A. Roofing assembly having high resistance for use with roofs of residential and industrial buildings
WO2006117605A3 (en) * 2005-04-29 2007-03-15 Iscom S P A Roofing assembly having high resistance for use with roofs of residential and industrial buildings
US7712278B2 (en) 2005-04-29 2010-05-11 Iscom Spa Roofing assembly including sheet panels having side edge portions with projections mating with grooves on brackets anchored to roof
EP3103936A4 (en) * 2014-01-27 2017-10-11 Guives Girona, S.A. Modular metal covering for buildings
FR3064508A1 (en) * 2017-03-30 2018-10-05 Bacacier 3 S DEVICE FOR CONNECTING TWO METAL SHEETS

Also Published As

Publication number Publication date
DE3316856A1 (en) 1984-11-08
DE3316856C2 (en) 1987-09-24
ATE37414T1 (en) 1988-10-15
EP0124707A3 (en) 1986-01-08
EP0124707B1 (en) 1988-09-21

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