EP0112861B1 - Formwork for rotationally symmetric structures - Google Patents

Formwork for rotationally symmetric structures Download PDF

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Publication number
EP0112861B1
EP0112861B1 EP83901926A EP83901926A EP0112861B1 EP 0112861 B1 EP0112861 B1 EP 0112861B1 EP 83901926 A EP83901926 A EP 83901926A EP 83901926 A EP83901926 A EP 83901926A EP 0112861 B1 EP0112861 B1 EP 0112861B1
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EP
European Patent Office
Prior art keywords
shuttering
formwork
rings
rail
internal
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
EP83901926A
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German (de)
French (fr)
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EP0112861A1 (en
Inventor
Peter Frei
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.)
JUGO-IMPORT-EXPORT-ANSTALT
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Jugo-Import-Export-Anstalt
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Priority claimed from AT0029983A external-priority patent/AT388015B/en
Priority claimed from AT0030083A external-priority patent/AT374875B/en
Application filed by Jugo-Import-Export-Anstalt filed Critical Jugo-Import-Export-Anstalt
Publication of EP0112861A1 publication Critical patent/EP0112861A1/en
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Publication of EP0112861B1 publication Critical patent/EP0112861B1/en
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
    • E04G11/08—Forms, which are completely dismantled after setting of the concrete and re-built for next pouring
    • E04G11/087—Fill-in form panels in the plane of two adjacent forms
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
    • E04G11/062—Forms for curved walls
    • E04G11/065—Forms for curved walls with mechanical means to modify the curvature
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
    • E04G17/002—Workplatforms, railings; Arrangements for pouring concrete, attached to the form
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
    • E04G17/04—Connecting or fastening means for metallic forming or stiffening elements, e.g. for connecting metallic elements to non-metallic elements
    • E04G17/045—Connecting or fastening means for metallic forming or stiffening elements, e.g. for connecting metallic elements to non-metallic elements being tensioned by wedge-shaped elements

Definitions

  • the invention relates to an internal formwork for rotationally symmetrical structures with a plurality of formwork rings arranged one above the other, made of interconnected, preferably made of sheet steel, formwork panels that are bendable in the circumferential direction of the rotationally symmetrical structure, with stiffening rings consisting of ring segments which describe a ring in the form of a polygon for the formwork panels and with at least one spreading device arranged between the ring segments.
  • stiffening rings consisting of ring segments which describe a ring in the form of a polygon for the formwork panels and with at least one spreading device arranged between the ring segments.
  • each formwork panel has to be curved for a certain building diameter. If several buildings with different diameters are to be boarded, a corresponding number of formwork panels must be available.
  • the object of the invention is to provide an internal formwork of the type mentioned, in which cheaper formwork elements can be used and in which the formwork panels can be adapted to all common building diameters, so that cylinder structures with different diameters can be interconnected with the same panels. It should be ensured that the formwork rings are exactly circular.
  • the formwork panels are tensioned on the stiffening rings, that vertical U-rails, which bear the spreader and bear on the formwork panels and carry the spreader device, are arranged between the ring segments such that the U-rails are arranged over at least two stiffening rings extend and that the formwork rings are attached to the U-rails.
  • An embodiment of the invention provides that a U-rail is arranged over the circumference of the formwork rings after each formwork panel.
  • formwork panels have fastening flanges at their vertical edges, which are arranged at a distance from the vertical edge that is equal to half the width of the U-rail. In this way, the vertical edges of the formwork panels meet flush.
  • the spreading device has a clamping screw which is held against rotation at the end of a ring segment, and a clamping nut which is supported indirectly or directly at the end of the second ring segment.
  • An embodiment has proven particularly useful in which the clamping nut is supported directly on the U-rail, the U-rails having holes in one of the side webs through which the clamping screws protrude, and guide bushes projecting into the U-rail on the other side web the clamping screw on which the clamping nuts are supported.
  • the guide bushings are advantageously welded to the U-rails.
  • Another exemplary embodiment of the invention provides that the end of a ring segment opposite the clamping screw is fastened to the U-rail by means of a retaining bolt.
  • FIG. 1 schematically shows a formwork according to the invention, partly in section, FIG. 2 shows view I of FIG. 1, FIG. 3 shows section AA of FIG. 2, and FIG. 4 shows section BB of FIG. 2nd
  • the formlining hangs on the outside on horizontal bi-steel rings 17, which are supported by the vertical steel profile beams.
  • Bi-steel has proven to be particularly suitable, but a different strip steel, a flat iron, and possibly also a round steel could also be used.
  • the inner formwork like the outer formwork, consists of formwork rings 1, which are formed by the formwork panels 3.
  • Joint cover strips 2 can be provided on the ring joints between the formwork rings 1. However, the joint cover strips 2 will rather be dispensed with in the internal formwork, since there is no visible surface here in the concrete wall to be produced.
  • stiffening rings 18 are provided, which are advantageously composed of ring segments 21, which are formed by shaped tubes, square tubes in the exemplary embodiment.
  • the stiffening rings 18 are dimensionally stable.
  • U-rails 19 are provided at the junctures of adjoining formwork panels 3.
  • the U-rails 19 are two meters long, ie one U-rail 19 extends over four formwork rings 1.
  • the formwork panels 3 are also provided with angle brackets 4 at their vertical edges 3 ', but these are set back by a dimension r with respect to the edge 3' (FIG. 4).
  • the dimension r corresponds to half of the middle connecting web 19 ′ of the U-rail 19.
  • the angle iron 4 of adjacent formwork panels 3 are not directly connected to one another, but indirectly via the U-rail 19.
  • Wedge locks 10 are provided, each of which comprises the free web 4 'of the angle iron 4 and a free side web 19 "of the U-rail 19, which form connecting flanges.
  • the wedge locks 10 have a guide groove in which the mounting position of the wedges 13 is arranged. The wedges 13 are driven into the wedge locks 10.
  • the stiffening rings 18 are loose with respect to the formwork panels 3, but are connected to the U-rails 19.
  • Wedge locks 10 ' hold the stiffening rings 18 on the U-rails 19.
  • Wedges 13' are hammered into the wedge locks 10 '.
  • Each ring segment 21, which is advantageously formed by a shaped tube, is provided at its ends with a cover plate 22, a cover plate 22 receiving a retaining bolt 23 which, in the installed position, projects into a hole in one of the side webs 19 ′′ of the U-rail 19.
  • the cover plate 22 is provided with an Allen key 25 in which the head 26 of a clamping screw 27 is held.
  • the clamping screw 27 projects freely through a hole 28 in the second side web 19 ′′ of the U-rail 19 into a guide bushing 29 welded onto the U-rail 19.
  • a clamping nut 30 for the clamping screw 27 is arranged on the guide bushing 29.
  • adjacent ring segments 21 can be pressed apart by turning the clamping nut 30 by means of the clamping screw 27. Since this results in an increase in diameter, the ring segments 21 press against the formwork ring 1 formed by the formwork panels 3 and the formwork ring 1 is stiffened, which is also formed in an exactly circular manner.
  • FIG. 3 also shows a vertical support 31 formed by a double-T beam, which is connected to ring segments 21 arranged one above the other by means of a wedge lock 10 'and a wedge 13' and thus stabilizes the formwork.
  • Three or more vertical supports 31 are advantageously provided per formwork.

Abstract

Formwork method, inner and outer formwork and linking parts used for the erection of circular constructions, for example cylindrical or spherical constructions. According to the method, a formwork surface (2) having the height of the wall to be cast is erected. Thereafter the casings are set in place and the second surface (2) of the formwork is pulled upwardly by runs of 50 cm, while introducing the concrete each time the formwork is lifted. The formworks (2) are comprised of flexible ring metal sheets. The rings are tensioned to obtain a stable form. The metal sheets are held together by key assemblies comprising retractable wedges between the supports and the clamps of the metal sheets.

Description

Die Erfindung bezieht sich auf eine Innenschalung für rotationssymmetrische Bauten mit mehreren übereinander angeordneten Schalungsringen aus miteinander verbundenen, vorzugsweise aus Stahlblech gefertigten, Schalplatten, die in der Umfangsrichtung des rotationssymmetrischen Baus biegbar sind, mit aus Ringsegmenten, welche polygonartig einen Ring beschreiben, bestehenden übereinander angeordneten Versteifungsringen für die Schalplatten und mit mindestens einer zwischen den Ringsegmenten angeordneten Spreizeinrichtung. (Wie z.B. in der FR-A-2 271 368 gezeigt).The invention relates to an internal formwork for rotationally symmetrical structures with a plurality of formwork rings arranged one above the other, made of interconnected, preferably made of sheet steel, formwork panels that are bendable in the circumferential direction of the rotationally symmetrical structure, with stiffening rings consisting of ring segments which describe a ring in the form of a polygon for the formwork panels and with at least one spreading device arranged between the ring segments. (As shown e.g. in FR-A-2 271 368).

Eine ähnliche Schalung mit gelenkig verbundenen Riegeln, einer Umterkonstruktion und einer gebogenen Schalhaut ist aus der DE-A-2 926 735 bekannt.A similar formwork with hinged bars, a Umter construction and a curved formlining is known from DE-A-2 926 735.

Der Nachteil einer weiteren Art von Schalungen ist darin zu sehen, dass jede Schalplatte für einen bestimmten Gebäudedurchmesser gebogen sein muss. Sollen mehrere Gebäude mit unterschiedlichem Durchmesser verschalt werden, müssen entsprechend viele Schalplatten vorhanden sein.The disadvantage of another type of formwork can be seen in the fact that each formwork panel has to be curved for a certain building diameter. If several buildings with different diameters are to be boarded, a corresponding number of formwork panels must be available.

Ein weiterer Nachteil ist, dass die starren Schalplatten, insbesondere nach längerem Gebrauch, beispielsweise auf Grund von aufgetretenen Deformierungen, schwer zu montieren sind. Des weiteren ist die Montage bereits an sich aufwendig, da die Schalplatten sowohl an ihren vertikalen Rändern als auch an ihren horizontalen Rändern mit den angrenzenden Schalplatten verschraubt werden müssen.Another disadvantage is that the rigid formwork panels are difficult to assemble, especially after prolonged use, for example due to deformations that have occurred. Furthermore, the assembly itself is complex since the formwork panels must be screwed to the adjacent formwork panels both on their vertical edges and on their horizontal edges.

Des weiteren sind die Schalplatten dieser Art teuer.Furthermore, the formwork panels of this type are expensive.

Aufgabe der Erfindung ist es, eine Innenschalung der eingangs erwähnten Art zu schaffen, bei der mit billigeren Schalungselementen gearbeitet werden kann und bei der die Schalplatten allen gebräuchlichen Gebäudedurchmessern angepasst werden können, so dass mit denselben Platten Zylinderbauten mit unterschiedlichem Durchmesser verschalt werden können. Dabei soll sichergestellt sein, dass die Schalungsringe jeweils genau kreisrund sind.The object of the invention is to provide an internal formwork of the type mentioned, in which cheaper formwork elements can be used and in which the formwork panels can be adapted to all common building diameters, so that cylinder structures with different diameters can be interconnected with the same panels. It should be ensured that the formwork rings are exactly circular.

Dies wird erfindungsgemäss dadurch erreicht, dass die Schalplatten auf die Versteifungsringe gespannt sind, dass zwischen den Ringsegmenten senkrechte, an den Schalplatten mit ihrem Steg anliegende U-Schienen, die die Spreizeinrichtung tragen, angeordnet sind, dass sich die U-Schienen über mindestens zwei Versteifungsringe erstrecken und dass die Schalungsringe an den U-Schienen befestigt sind.This is achieved according to the invention in that the formwork panels are tensioned on the stiffening rings, that vertical U-rails, which bear the spreader and bear on the formwork panels and carry the spreader device, are arranged between the ring segments such that the U-rails are arranged over at least two stiffening rings extend and that the formwork rings are attached to the U-rails.

Ein Ausführungsbeispiel der Erfindung sieht vor, dass über den Umfang der Schalungsringe nach jeder Schalplatte eine U-Schiene angeordnet ist.An embodiment of the invention provides that a U-rail is arranged over the circumference of the formwork rings after each formwork panel.

Ein weiteres Ausführungsbeispiel der Erfindung sieht vor, dass die Schaltafeln bei ihren Vertikalrändern Befestigungsflansche haben, die mit einem Abstand zum Vertikalrand angeordnet sind, der gleich der halben Breite der U-Schiene ist. Auf diese Art und Weise stossen die Vertikalränder der Schaltafeln bündig aneinander.Another exemplary embodiment of the invention provides that the formwork panels have fastening flanges at their vertical edges, which are arranged at a distance from the vertical edge that is equal to half the width of the U-rail. In this way, the vertical edges of the formwork panels meet flush.

Vorteilhaft ist weiters vorgesehen, dass die Spreizeinrichtung eine Spannschraube aufweist, die am Ende eines Ringsegmentes verdrehsicher gehalten ist, und eine Spannmutter, die sich mittelbar oder unmittelbar am Ende des zweiten Ringsegmentes abstützt.It is also advantageously provided that the spreading device has a clamping screw which is held against rotation at the end of a ring segment, and a clamping nut which is supported indirectly or directly at the end of the second ring segment.

Besonders bewährt hat sich ein Ausführungsbeispiel, bei dem sich die Spannmutter unmittelbar an der U-Schiene abstützt dabei weisen die U-Schienen in einem der Seitenstege Löcher auf, durch die die Spannschrauben ragen, und am anderen Seitensteg in die U-Schiene ragende Führungsbuchsen für die Spannschraube, an denen sich die Spannmuttern abstützen. Die Führungsbuchsen sind vorteilhaft an die U-Schienen angeschweisst. Ein weiteres Ausführungsbeispiel der Erfindung sieht vor, dass das der Spannschraube gegenüberliegende Ende eines Ringsegmentes mittels eines Haltebolzens an der U-Schiene befestigt ist.An embodiment has proven particularly useful in which the clamping nut is supported directly on the U-rail, the U-rails having holes in one of the side webs through which the clamping screws protrude, and guide bushes projecting into the U-rail on the other side web the clamping screw on which the clamping nuts are supported. The guide bushings are advantageously welded to the U-rails. Another exemplary embodiment of the invention provides that the end of a ring segment opposite the clamping screw is fastened to the U-rail by means of a retaining bolt.

Nachfolgend wird ein Ausführungsbeispiel der Erfindung anhand der Figuren der beiliegenden Zeichnungen beschrieben.An exemplary embodiment of the invention is described below with reference to the figures of the accompanying drawings.

Die Fig. 1 zeigt schematisch eine erfindungsgemässe Schalung teilweise im Schnitt, die Fig. 2 zeigt die Ansicht I der Fig. 1, die Fig. 3 zeigt den Schnitt A-A der Fig. 2 und die Fig. 4 zeigt den Schnitt B-B der Fig. 2.1 schematically shows a formwork according to the invention, partly in section, FIG. 2 shows view I of FIG. 1, FIG. 3 shows section AA of FIG. 2, and FIG. 4 shows section BB of FIG. 2nd

Im Ausführungsbeispiel hängt die Schalhaut aussen an horizontalen Bi-Stahlringen 17, die von den vertikalen Stahlprofilträgern getragen werden. Bi-Stahl hat sich als besonders geeignet erwiesen, es könnte jedoch auch ein anderer Bandstahl, ein Flacheisen, eventuellauch ein Rundstahl Verwendung finden.In the exemplary embodiment, the formlining hangs on the outside on horizontal bi-steel rings 17, which are supported by the vertical steel profile beams. Bi-steel has proven to be particularly suitable, but a different strip steel, a flat iron, and possibly also a round steel could also be used.

Die Innenschalung besteht ebenso wie die Aussenschalung aus Schalungsringen 1, die von den Schalplatten 3 gebildet werden.The inner formwork, like the outer formwork, consists of formwork rings 1, which are formed by the formwork panels 3.

Die Schalplatten 3 haben ebenso wie die Schalplatten 3 der Aussenschalung eine Länge von 3 m und eine Höhe von 50 cm, wobei jedoch die Schalplatten 3 der Innenschalung ohne weiteres andere Abmessungen als die Schalplatten 3 der Aussenschalung haben könnten.The formwork panels 3, like the formwork panels 3 of the outer formwork, have a length of 3 m and a height of 50 cm, but the formwork panels 3 of the inner formwork could easily have different dimensions than the formwork panels 3 of the outer formwork.

An den Ringfugen zwischen den Schalungsringen 1 können Fugenabdeckleisten 2 vorgesehen sein. Es wird jedoch bei der Innenschalung eher auf die Fugenabdeckleisten 2 verzichtet werden, da hier bei der herzustellenden Betonwand keine Sichtfläche entsteht.Joint cover strips 2 can be provided on the ring joints between the formwork rings 1. However, the joint cover strips 2 will rather be dispensed with in the internal formwork, since there is no visible surface here in the concrete wall to be produced.

Bei den Ringfugen sind Versteifungsringe 18 vorgesehen, die sich vorteilhaft aus Ringsegmenten 21 zusammensetzen, die von Formrohren, im Ausführungsbeispiel Vierkantrohren, gebildet werden.In the ring joints, stiffening rings 18 are provided, which are advantageously composed of ring segments 21, which are formed by shaped tubes, square tubes in the exemplary embodiment.

Während die Schalplatten 3 wiederum wie bei der Aussenschalung aus Stahlblech und verbiegbar sind, sind die Versteifungsringe 18 formstabil.While the formwork panels 3 are in turn made of sheet steel and can be bent, as is the case with the external formwork, the stiffening rings 18 are dimensionally stable.

Bei den Verbindungsstellen aneinander angrenzender Schalplatten 3 sind vertikale U-Schienen 19 vorgesehen. Im Ausführungsbeispiel sind die U-Schienen 19 zwei Meter lang, d.h. eine U-Schiene 19 erstreckt sich über vier Schalungsringe 1.Vertical U-rails 19 are provided at the junctures of adjoining formwork panels 3. In the exemplary embodiment, the U-rails 19 are two meters long, ie one U-rail 19 extends over four formwork rings 1.

Die Schalplatten 3 sind bei ihren vertikalen Rändern 3' ebenso mit Winkeleisen 4 versehen, doch sind diese in bezug auf den Rand 3' um ein Mass r zurückversetzt (Fig. 4). Das Mass r entspricht der Hälfte des mittleren Verbindungssteges 19' der U-Schiene 19.The formwork panels 3 are also provided with angle brackets 4 at their vertical edges 3 ', but these are set back by a dimension r with respect to the edge 3' (FIG. 4). The dimension r corresponds to half of the middle connecting web 19 ′ of the U-rail 19.

Wie aus der Fig. 4 ersichtlich, sind die Winkeleisen 4 benachbarter Schalplatten 3 nicht unmittelbar miteinander verbunden, sondern über die U-Schiene 19 mittelbar.As can be seen from FIG. 4, the angle iron 4 of adjacent formwork panels 3 are not directly connected to one another, but indirectly via the U-rail 19.

Es sind Keilschlösser 10 vorgesehen, die jeweils den freien Steg 4' des Winkeleisens 4 und einen freien Seitensteg 19" der U-Schiene 19, die Verbindungsflansche bilden, umfassen.Wedge locks 10 are provided, each of which comprises the free web 4 'of the angle iron 4 and a free side web 19 "of the U-rail 19, which form connecting flanges.

Die Keilschlösser 10 weisen eine Führungsnut auf, in der die Montagelage der Keile 13 angeordnet ist. Die Keile 13 werden in die Keilschlösser 10 eingeschlagen.The wedge locks 10 have a guide groove in which the mounting position of the wedges 13 is arranged. The wedges 13 are driven into the wedge locks 10.

Die Versteifungsringe 18 sind in bezug auf die Schalplatten 3 lose, aber mit der bzw. den U-Schienen 19 verbunden.The stiffening rings 18 are loose with respect to the formwork panels 3, but are connected to the U-rails 19.

Diese Art der Verbindung ist insbesondere aus der Fig. 3 ersichtlich. Keilschlösser 10' halten die Versteifungsringe 18 an den U-Schienen 19. In die Keilschlösser 10' sind Keile 13' eingeschlagen. Jedes ringsegment 21, das vorteilhaft von einem Formrohr gebildet wird, ist an seinen Enden mit einer Abdeckplatte 22 versehen, wobei eine Abdeckplatte 22 einen Haltebolzen 23 aufnimmt, der in Montagelage in ein Loch in einem der Seitenstege 19" der U-Schiene 19 ragt.This type of connection is particularly evident from FIG. 3. Wedge locks 10 'hold the stiffening rings 18 on the U-rails 19. Wedges 13' are hammered into the wedge locks 10 '. Each ring segment 21, which is advantageously formed by a shaped tube, is provided at its ends with a cover plate 22, a cover plate 22 receiving a retaining bolt 23 which, in the installed position, projects into a hole in one of the side webs 19 ″ of the U-rail 19.

Auf der anderen Seite ist die Abdeckplatte 22 mit einem Imbus-Sechskant 25 versehen, in dem der Kopf 26 einer Spannschraube 27 gehalten ist.On the other hand, the cover plate 22 is provided with an Allen key 25 in which the head 26 of a clamping screw 27 is held.

Die Spannschraube 27 ragt frei durch ein Loch 28 im zweiten Seitensteg 19" der U-Schiene 19 bis in eine auf die U-Schiene 19 aufgeschweisste Führungsbüchse 29.The clamping screw 27 projects freely through a hole 28 in the second side web 19 ″ of the U-rail 19 into a guide bushing 29 welded onto the U-rail 19.

Auf der Führungsbüchse 29 ist eine Spannmutter 30 für die Spannschraube 27 angeordnet.A clamping nut 30 for the clamping screw 27 is arranged on the guide bushing 29.

Nach erfolgter Montage der Versteifungsringe 18 und der Schalungsringe 1 können aneinandergrenzende Ringsegmente 21 durch Verdrehen der Spannmutter 30 mittels der Spannschraube 27 auseinandergedrückt werden. Da es dadurch zu einer Durchmesservergrösserung kommt, drükken sich die Ringsegmente 21 an den von den Schalplatten 3 gebildeten Schalungsring 1 und es kommt zu einer Aussteifung des Schalungsringes 1, der ausserdem exakt kreisrund geformt wird.After the stiffening rings 18 and the formwork rings 1 have been assembled, adjacent ring segments 21 can be pressed apart by turning the clamping nut 30 by means of the clamping screw 27. Since this results in an increase in diameter, the ring segments 21 press against the formwork ring 1 formed by the formwork panels 3 and the formwork ring 1 is stiffened, which is also formed in an exactly circular manner.

In der Fig. 3 ist noch eine von einem Doppel-T-Träger gebildete Vertikalstütze 31 gezeigt, die mittels eines Keilschlosses 10' und eines Keiles 13' mit übereinander angeordneten Ringsegmenten 21 verbunden ist und so die Schalung stabilisiert. Vorteilhaft werden pro Schalung drei oder mehr Vertikalstützen 31 vorgesehen.FIG. 3 also shows a vertical support 31 formed by a double-T beam, which is connected to ring segments 21 arranged one above the other by means of a wedge lock 10 'and a wedge 13' and thus stabilizes the formwork. Three or more vertical supports 31 are advantageously provided per formwork.

Claims (7)

1. An internal shuttering for axially symmetrical structures with a plurality of shuttering rings (1) which are arranged one above the other and which comprise shuttering plates (3) which are connected to one another and are preferably produced from sheet steel and which are flexible in the peripheral direction of the axially symmetrical structure, with reinforcement rings (18), which comprise annular segments (21) describing a ring in the manner of a polygon and which are arranged one above the other for the shuttering plates (3), and with at least one spreading device disposed between the annular segments (21), characterized in that the shuttering plates (3) are clamped on the reinforcement rings (18), vertical U-rails (19), which bear on the shuttering plates (3) with their webs and which support the spreading device, are disposed between the annular segments (21), the U-rails (19) extend over at least two reinforcement rings (18), and the shuttering rings (1) are secured to the U-rails (19).
2. An internal shuttering according to Claim 1, characterized in that a U-rail (19) is arranged over the periphery of the shuttering rings (1) after each shuttering plate (3).
3. An internal shuttering according to Claim 1, characterized in that at their vertical edges (3') the shuttering panels (3) have fastening flanges (4') which are disposed at a distance (r) from the vertical edge (3') which is equal to half the width of the U-rails (19).
4. An internal shuttering according to Claim 1, characterized in that spreading device comprises a tightening screw (27), which is held non-rotatably at the end of an annular segment (21), and a tightening nut (30), which is supported directly of indirectly on the end of the following annular segment (21).
5. An internal shuttering according to Claim 4, characterized in that the tightening nut (30) is supported directly on the U-rail (19).
6. An internal shuttering according to Claim 5, charcterized in that in one of the lateral webs (19") the U-rail (19) comprises holes (28) through which the tightening screws (27) project, and on the other lateral web (19") it comprises guide sleeves (29) projecting into the U-rail (19) for the tightening screws (27), on which the tightening nuts (30) are supported.
7. An internal shuttering according to Claim 5, characterized in that the end of an annular segment (21) opposite the tightening screw (27) is secured to the U-rail (19) by means of a holding pin (23).
EP83901926A 1982-07-02 1983-06-29 Formwork for rotationally symmetric structures Expired EP0112861B1 (en)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
AT2562/82 1982-07-02
AT256282 1982-07-02
AT299/83 1983-01-31
AT0029983A AT388015B (en) 1983-01-31 1983-01-31 INTERNAL FORMWORK FOR ROTATION-SYMMETRICAL BUILDINGS
AT0030083A AT374875B (en) 1983-01-31 1983-01-31 COUPLING, IN PARTICULAR FOR SHUTTERING
AT300/83 1983-01-31
AT30183 1983-01-31
AT301/83 1983-01-31

Publications (2)

Publication Number Publication Date
EP0112861A1 EP0112861A1 (en) 1984-07-11
EP0112861B1 true EP0112861B1 (en) 1988-01-27

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EP83901926A Expired EP0112861B1 (en) 1982-07-02 1983-06-29 Formwork for rotationally symmetric structures

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EP (1) EP0112861B1 (en)
JP (1) JPS59501219A (en)
AU (1) AU1705483A (en)
DE (1) DE3375496D1 (en)
ES (2) ES523772A0 (en)
IT (1) IT1194292B (en)
NO (1) NO840784L (en)
PT (1) PT76967B (en)
WO (1) WO1984000189A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2564881A1 (en) * 1984-05-22 1985-11-29 Thellier Jean Pierre Device for moulding a shell on an articulated modular structure and method of multi-directional moulding in one or more layers with the possibility of integrated insulation and air-void (cavity)
AT381547B (en) * 1985-01-24 1986-10-27 Patenver Ag SEGMENT FORMWORK FOR ROUND BUILDINGS
DE29507997U1 (en) * 1994-05-16 1995-10-12 Heinzle Otto Stiffening and filling device for concrete for a large-area formwork with adjustable diameter for cylindrical concrete structures
WO2013153000A2 (en) 2012-04-11 2013-10-17 Novo Nordisk A/S Insulin formulations
ITGE20130017A1 (en) * 2013-02-06 2014-08-07 Daniele Roveta CONTAINMENT STRUCTURE OF CONCRETE JETS AND METHOD FOR ITS REALIZATION

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE728492C (en) * 1938-02-27 1942-11-27 Ferdinand Schmidt Deutsche Fut Device for the production of silo-like, thin-walled concrete containers
FR990644A (en) * 1944-03-22 1951-09-24 Metal formwork device more particularly applicable to the formwork of curved surfaces in reinforced concrete constructions
FR1059045A (en) * 1952-04-10 1954-03-22 Improvements in the construction of concrete structures or other moldable material
DE1559041B1 (en) * 1965-06-25 1970-10-01 Meyer Keller Noe Schalttech Wedge connection of two formwork panels
FR1544889A (en) * 1967-09-29 1968-11-08 Formwork for circular structures
US3822858A (en) * 1969-07-14 1974-07-09 J Franklin Spacer elements for corner forming system
US3679168A (en) * 1970-04-08 1972-07-25 Richard L Weaver Clamping device
DE2140543A1 (en) * 1971-08-12 1973-02-22 Siemens Bauunion Gmbh CLIMBING FORMWORK FOR THE PRODUCTION OF STRAIGHT OR CURVED REINFORCED CONCRETE WALLS
FR2271368A1 (en) * 1974-05-15 1975-12-12 Gendrot Fernand Variable radius formwork support system - has back to back transverse channels and variable position lengthwise channels
US3994471A (en) * 1975-02-26 1976-11-30 Anthony Turolla Ply joint bar
JPS5447329A (en) * 1977-09-21 1979-04-13 Hidemi Yamagami Method of construction by large scale prefabricated flask and its device
DE7838440U1 (en) * 1978-12-27 1979-04-12 Haensch, Paul, 4600 Dortmund PROFILE BAR FOR SEALING FORMWORK PANELS IN MINING LINES
DE2926735A1 (en) * 1979-07-03 1981-01-22 Schliephacke Heinrich Round or polygonal concrete wall formwork hinge bolt - has space between hinge connections permitting continuous length adjustment

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JPH05501B2 (en) 1993-01-06
DE3375496D1 (en) 1988-03-03
PT76967B (en) 1986-02-03
IT8321858A0 (en) 1983-06-30
PT76967A (en) 1983-07-01
AU1705483A (en) 1984-01-26
ES8407142A1 (en) 1984-08-16
EP0112861A1 (en) 1984-07-11
JPS59501219A (en) 1984-07-12
ES277446Y (en) 1985-02-01
NO840784L (en) 1984-03-01
WO1984000189A1 (en) 1984-01-19
ES277446U (en) 1984-07-16
IT1194292B (en) 1988-09-14
ES523772A0 (en) 1984-08-16

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