EP1537281B1 - Circular formwork - Google Patents

Circular formwork Download PDF

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Publication number
EP1537281B1
EP1537281B1 EP03794971A EP03794971A EP1537281B1 EP 1537281 B1 EP1537281 B1 EP 1537281B1 EP 03794971 A EP03794971 A EP 03794971A EP 03794971 A EP03794971 A EP 03794971A EP 1537281 B1 EP1537281 B1 EP 1537281B1
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EP
European Patent Office
Prior art keywords
formwork
facing
flange
carrier
flanges
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 - Lifetime
Application number
EP03794971A
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German (de)
French (fr)
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EP1537281A1 (en
Inventor
Kurt Jaruzel
Josef Griessbaum
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PASCHAL-WERK G MAIER GmbH
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PASCHAL-WERK G MAIER GmbH
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Publication date
Application filed by PASCHAL-WERK G MAIER GmbH filed Critical PASCHAL-WERK G MAIER GmbH
Priority to SI200331337T priority Critical patent/SI1537281T1/en
Publication of EP1537281A1 publication Critical patent/EP1537281A1/en
Application granted granted Critical
Publication of EP1537281B1 publication Critical patent/EP1537281B1/en
Priority to CY20081100988T priority patent/CY1108783T1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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

Definitions

  • the invention relates to a circular formwork with at least one formwork element which is adjustable with respect to its curvature and which has stiffeners and / or at least one support supporting the formwork, which has a U, V or trapezoidal cross-section which is open towards the supported formwork skin and at its facing edges of the formwork mounting flanges for connection to the back of the formwork skin has, and with a on the stiffeners and the or the straps with distance from the formwork panel attacking, the effective length of the harness is adjustable to change the curvature of the formwork.
  • Such a formwork with several serving as a stiffening straps and also serving as stiffeners edge webs is off DE 24 26 708 C3 or off EP 0 514 712 B1 ( US-A-5,492,303 ) and has proven itself.
  • the belt engages in each case on the carriers, but not on the edge webs, while in the formwork according to EP 0 514 712 B1 the girth is also provided between a support close to the edge and a further reinforcement in the form of an edge web and is adjustable in its effective length.
  • intermediate pieces are arranged between the flanges of the carrier and the formwork skin and the flanges of the carriers are fastened to these intermediate pieces so as to be pivotable or tiltable about their longitudinal extension direction.
  • the design according to the invention thus avoids kinking or undesired deviations from the desired curvature occurring during the curving of the formwork skin during its course, in particular in the region of flanges of the carrier.
  • the intermediate piece which is attached to the outside of the formwork, also allows for a relatively thin formwork skin a large penetration depth for a fastener so that it can be attached from the concreting side facing away from the concrete and the facing surface of the formwork in the area
  • the attachment can remain uninterrupted, so that resulting from fasteners imprints are avoided in the concrete.
  • the spacers may have threaded holes into which the flanges of the carrier passing through fastening screws or mounting bolts are screwed and / or on the spacers fastening bolts may be arranged or secured, enforce the mounting holes in the flanges of the carrier.
  • the carrier can be connected by means of screw on the turn on the formwork panel arranged spacers.
  • the spacers each have a plurality of threaded holes arranged in series and / or fastening bolts for a plurality of provided on a common flange Befest Trentslochept for a flange of a carrier.
  • the spacers may be strip-shaped and extend over at least part of the longitudinal extension of a respective flange of a carrier. Correspondingly long is the connection between the carrier and the formwork, and the stiffening effect is correspondingly well transmitted.
  • a best possible stiffening of the formwork skin by the respective carrier can be achieved if the intermediate pieces are each substantially as long as the carrier and / or its flange.
  • the respective intermediate piece can therefore support, in such a preferred embodiment, practically the entire flange profile in a tiltable manner.
  • the formwork can be made of wood, plastic, metal, iron and / or steel.
  • the arrangement of spacers, especially in a formwork made of metal, especially steel proves to be particularly advantageous because not only the total thickness of formwork and intermediate piece results in a correspondingly large engagement length for a fastener, but in a formwork made of steel in conjunction with the flanges of a V-, U- or trapezoidal carrier in direct mutual attachment, for example by welding a hollow profile would form, in which the formwork belonging to the formwork Share in an adjustment of the Gurtungsine not or hardly could be changed in its curvature.
  • the adjustability of the curvature even in the region between the flanges of the supports is advantageously retained even in such a formwork skin.
  • the spacers are conveniently connected to the back of the formwork or - in a formwork skin of metal, iron or steel also made of metal, iron or steel - welded. This leads to the best possible connection of the intermediate pieces with the formwork, so that the forces to be conducted into the carrier can be introduced well everywhere.
  • the pivoting or tilting according to the invention can be realized in that the flange facing side of the intermediate piece has a convexly curved cross-section or sloping beveled on both sides of the attachment points and / or that the underside of the flange of the support convexly curved or with respect to the intermediate piece of the Center receding bevels provided to the outside.
  • a low-cost production thereby provides a flat surface of the intermediate piece and a correspondingly curved or two sides bevelled underside of the associated flange, so that the intermediate piece is a very simple in its cross-section bar, while the carrier in its manufacture equal to the corresponding cross-sectional shape the flanges can be provided.
  • At the point of contact between the intermediate piece and the flange in each case, there is an interspace which increases in each case from the contact or attachment point to the outside, that is, a mutual tilting about the Longitudinal direction allowed.
  • the flange on the side facing away from the formwork facing projection, screw head, a nut and / or located between the screw head or nut and flange intermediate part may have on the flange side facing away from the central region outwardly cross-section, for example, rounded or bevelled be.
  • the formed in particular as strips intermediate pieces may be formed symmetrically to its longitudinal center.
  • they can be mounted in virtually any orientation on the formwork, that is, when they make their contact with the formwork, a preferred position and direction must not be taken into account, so that the assembly is facilitated.
  • the strip-shaped intermediate pieces may have an approximately rectangular cross-section, wherein the flange of the carrier facing side of the rectangle convexly curved and / or be bevelled starting from the central region on both sides or part-circular or semicircular and a flattened or flat portion of the cross section on the outside of the Formwork can rest.
  • the intermediate piece itself can be shaped so that the possibility of tilting or tilting results for an optionally flat flange.
  • the formwork as metal, plastic or wood has a long service life and resilience and still the advantageous carrier with U, V- or preferably trapezoidal cross section may be used, which are closed on its side facing the formwork facing from this to a kind of box section.
  • the formwork can also be adapted between the flanges of a carrier to the respective curvature, because by the intermediate piece located between it and the flanges and the provided there pivoting or tilting of the flanges, the formwork also between these flanges bent or curved or can be changed in their curvature.
  • it can be avoided that parts of the fastening elements are visible on the side of the formwork facing the concrete and cause imprints in the concrete.
  • Fig. 1 to 4 shows a generally designated 1 formwork element of a formwork for curved surfaces, that is, such a formwork may be composed of several such formwork elements 1, being provided on the vertical edges 2 as stiffeners for the formwork facing connecting webs 3 for interconnecting such formwork elements 1 are.
  • the formwork 4 is according to Fig. 3 curved and can be adjusted or adjusted in terms of their curvature.
  • the formwork element 1 also according to Fig. 4 at least one, according to Fig. 3 two - possibly even more - the formwork 4 in addition to the connecting webs 3 supporting carrier 5, in the embodiment according to 3 and 4 have an approximately trapezoidal cross-section, which is open to the supported formwork facing 4 and is complemented by the formwork 5 virtually to a hollow cross-section.
  • the one or more carriers 5 have at their edges facing the formwork facing 4 mounting flanges 6, wherein such a mounting flange 6 in Fig. 5 is shown particularly clearly. It can be seen that the free edge of this flange 6 is bent away from the formwork 4. These mounting flanges 6 are used in a manner to be described for connecting the carrier 5 to the formwork skin. 4
  • the formwork 4 is made of metal, especially steel, plastic or wood and allows due to their strength or optionally their thickness, a high load.
  • curvature can nevertheless be provided between the attachment flanges 6 and can be changed approximately in the same way as outside a carrier cross-section, between the attachment flanges 6 and the skin 4 according to FIG 3 and 4 and especially according to Fig. 5
  • Arranged intermediate pieces 9 and the mounting flanges 6 of the carrier 5 are pivotally or tiltably attached to these relative to them about their longitudinal extension direction, so that the formwork skin 4 with the respective intermediate piece 9 together relative to the respective mounting flange 6 a corresponding relative movement in the Change their curvature can perform.
  • Fig. 4 have the spacers 9 threaded holes 10, in which the flanges 6 of the carrier 5 passing through fastening screws 11 or mounting bolts are screwed, as can be clearly seen in Fig. 4 recognizes.
  • a corresponding fastening element acts directly on the formwork skin 4, that is, the intermediate piece 9 receives an additional function.
  • the intermediate pieces 9 are substantially as long as the associated carrier 5 and / or its flange 6, so that over the entire length of the carrier 5 of the in Fig. 5 shown cross-section results.
  • the spacers 9 have according to Fig. 1 each for a flange 6 of a carrier 5 a plurality of serially arranged threaded holes 10 corresponding to the number of fastening screws 11. It would also be conceivable that the spacers 9 of a mounting flange 6 are interrupted and are arranged only in the area of the fastening screws 11.
  • the spacers 9 are according to Fig. 5 connected to the back of the formwork 4 and, if both made of metal, preferably made of iron or steel, welded to it.
  • the relative pivoting or tilting about an axis extending in the longitudinal direction of the respective flanges 6 axis is possible, the underside of the flange 6 according to Fig. 4 curved approximately convex or provided with respect to the intermediate piece 9 from the center to the outside receding bevels 61.
  • the flange 6 due to these bevels 61 on the intermediate piece 9 can rock, that is, conversely, the intermediate piece 9 with the formwork facing 4 perform corresponding movements when the curvature of the formwork 4 is changed without the flange 6 and the carrier 5 this or even prevent.
  • the intermediate pieces 9 are formed in the embodiment as strips and symmetrical about their longitudinal center, so that they can be mounted in any orientation.
  • the cross section is rectangular, but could also be curved convexly on the side facing the flange 6 and thereby bevelled and be part-circular or even semi-circular shaped, thereby enabling the already described relative pivotal movement between the intermediate piece 9 and the flange 6.
  • the formlining 4 can therefore be changed with respect to its curvature with the aid of the belt 7 and the tightening screw 8, without such a change in the curvature especially between the flanges 6 of a respective carrier 5 due to the attachment thereto prevented and thereby over the cross section of the formwork 4 irregular becomes.
  • the formwork 4 can be adjusted or adjusted in its curvature, and this continues between the flanges 6 of a carrier 5, because the formwork despite their indirect connection with the flanges 6 relative to tilting or pivoting movements can perform according to their respective curvature. It is useful that the centers of curvature lie on an axis which is parallel to the longitudinal direction of the carrier.
  • the formwork element 1 can be constructed with other such formwork elements 1 to a formwork.
  • an adjustable in terms of their curvature formwork 4 is provided, which is supported by the rear supports 5 to provide a rigid, the concreting pressure-resistant formwork element 1.
  • the preferably trapezoidal in cross-section carrier 5 have at their edges mounting flanges 6 and are provided at a distance from the formwork skin 4 with at least one belt 7 whose length is adjustable to adjust or change the curvature of the formwork 4.
  • the formwork 4 is preferably made of steel or plastic or wood and between the mounting flanges 6 of the carrier 5 and the formwork 4 are intermediate pieces 9, wherein the mounting flanges 6 are attached to these relative to their pivoting or tilting about their longitudinal extension direction, in which the cross-section of the flanges 6 and / or the intermediate pieces 9 and / or 12 is provided convexly or bevels 61.

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  • Architecture (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Chairs Characterized By Structure (AREA)
  • Magnetic Heads (AREA)
  • Pens And Brushes (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Moulds, Cores, Or Mandrels (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

The circular shuttering has at least one shuttering element (1) with skin (4) of adjustable curvature supported by supports (5) and fixing flanges (6). Between the fixing flanges (6) of the supports and the skin are intermediate members (9) so that the flanges can be fixed on same where they can swivel or tilt about their longitudinal extension. The intermediate members can have threaded holes for screwing in fixing screws which pass through the flanges.

Description

Die Erfindung betrifft eine Rundschalung mit wenigstens einem eine bezüglich ihrer Krümmung einstellbare Schalhaut aufweisenden Schalungselement, welches Aussteifungen und/oder wenigstens einen die Schalhaut abstützenden Träger aufweist, der einen U-, V- oder trapezförmigen, zu der abgestützten Schalhaut hin offenen Querschnitt hat und an seinen der Schalhaut zugewandten Rändern Befestigungsflansche zum Verbinden mit der Rückseite der Schalhaut hat, und mit einer an den Aussteifungen und dem oder den Trägern mit Abstand zur Schalhaut angreifenden Gurtung, wobei die wirksame Länge der Gurtung zur Veränderung der Krümmung der Schalhaut verstellbar ist.The invention relates to a circular formwork with at least one formwork element which is adjustable with respect to its curvature and which has stiffeners and / or at least one support supporting the formwork, which has a U, V or trapezoidal cross-section which is open towards the supported formwork skin and at its facing edges of the formwork mounting flanges for connection to the back of the formwork skin has, and with a on the stiffeners and the or the straps with distance from the formwork panel attacking, the effective length of the harness is adjustable to change the curvature of the formwork.

Eine derartige Schalung mit mehreren als Aussteifung dienenden Trägern sowie ebenfalls als Aussteifungen dienenden Randstegen ist aus DE 24 26 708 C3 oder aus EP 0 514 712 B1 ( US-A-5 492 303 ) bekannt und hat sich bewährt. Bei der Schalung und den Schalungselementen gemäß DE 24 26 708 C3 greift dabei die Gurtung jeweils an den Trägern, nicht aber an den Randstegen an, während bei der Schalung gemäß EP 0 514 712 B1 die Gurtung auch zwischen einem randnahen Träger und einer weiteren Aussteifung in Form eines Randstegs vorgesehen und in ihrer wirksamen Länge verstellbar ist.Such a formwork with several serving as a stiffening straps and also serving as stiffeners edge webs is off DE 24 26 708 C3 or off EP 0 514 712 B1 ( US-A-5,492,303 ) and has proven itself. In the formwork and the formwork elements according to DE 24 26 708 C3 In this case, the belt engages in each case on the carriers, but not on the edge webs, while in the formwork according to EP 0 514 712 B1 the girth is also provided between a support close to the edge and a further reinforcement in the form of an edge web and is adjustable in its effective length.

Die Befestigung der Träger erfolgt dabei mit unmittelbar in die Schalhaut eingreifenden Schrauben, dass heißt eine solche Befestigung ist nur möglich, wenn die Schalhaut eine ausreichende Dicke hat. Darüber hinaus ergibt sich für die Fälle, bei denen der Schraubenkopf in die dem Beton zugewandte Oberfläche der Schalhaut eingesenkt ist, später an der Betonoberfläche ein entsprechender Abdruck.The attachment of the carrier takes place with engaging directly into the formwork shell screws, that is, such attachment is only possible if the formwork has a sufficient thickness. In addition, results for the cases in which the screw head is sunk into the concrete facing surface of the formwork, later on the concrete surface corresponding impression.

Bei einer aus Holz beziehungsweise aus einem Holzlaminat bestehenden Schalhaut unterliegt diese außerdem einem relativ hohen Verschleiß.In the case of a formwork made of wood or of a wood laminate, this is also subject to relatively high wear.

Auch aus US 4 619 433 ist eine derartige Schalung bekannt, wobei die Befestigungsflansche der Träger einen stumpfwinkligen Querschnitt haben und die Befestigungsschrauben im Scheitel dieses Winkels angreifen. Je nach Größe des Schraubenkopfes beziehungsweise der Mutter und/oder einer Unterlegscheibe werden die Flansche mehr oder weniger begradigt und gegebenenfalls in eine aus Holz bestehende Tafel eingedrückt.Also from US Pat. No. 4,619,433 Such a formwork is known, wherein the mounting flanges of the carrier have an obtuse-angled cross section and attack the fastening screws in the vertex of this angle. Depending on the size of the screw head or the nut and / or a washer, the flanges are more or less straightened and optionally pressed into a panel made of wood.

Es besteht deshalb die Aufgabe, eine Schalung der eingangs genannten Art zu schaffen, bei welcher Abdrücke von Befestigungsmitteln im Beton wenigstens weitgehend oder völlig vermieden werden können und bei welcher die Krümmung der Schalhaut auch zwischen den Flanschen eines im Querschnitt U-, V-, trapezförmigen Trägers möglichst ohne Abweichungen beziehungsweise in Übereinstimmung mit Nachbarbereichen der Schalhaut ein- oder verstellt werden kann.It is therefore an object to provide a formwork of the type mentioned, in which impressions of fasteners in the concrete can be at least largely or completely avoided and in which the curvature of the formwork also between the flanges of a cross-section U-, V-, trapezoidal Can be switched on or adjusted as possible without deviations or in accordance with adjacent areas of the formwork.

Zur Lösung dieser Aufgabe ist vorgesehen, dass zwischen den Flanschen der Träger und der Schalhaut Zwischenstücke angeordnet und die Flansche der Träger an diesen Zwischenstücken um ihre Längserstreckungsrichtung schwenkbar oder kippbar befestigt sind.To achieve this object, it is provided that intermediate pieces are arranged between the flanges of the carrier and the formwork skin and the flanges of the carriers are fastened to these intermediate pieces so as to be pivotable or tiltable about their longitudinal extension direction.

Durch die mögliche relative Verkippung oder Verschwenkung der Flansche an den Zwischenstücken kann erreicht werden, dass beim Einstellen oder Verstellen einer Krümmung der Schalhaut zwischen den beiden Flanschen eines derartigen Trägers die gewünschte Krümmung eingestellt wird, obwohl eigentlich der Querschnitt der Trägers mit der Schalhaut ein geschlossenes Hohlprofil bildet, welches ohne die erfindungsgemäße Anordnung für eine solche Einstellung oder Änderung der Krümmung eine zu große Steifigkeit hätte.By the possible relative tilting or pivoting of the flanges on the intermediate pieces can be achieved that when setting or adjusting a curvature of the formwork skin between the two flanges of such a carrier the desired Curvature is set, although actually forms the cross section of the carrier with the formwork skin a closed hollow profile, which would have too great rigidity without the inventive arrangement for such adjustment or change of curvature.

Durch die relative Schwenkbarkeit zwischen den Flanschen der Träger und dem seinerseits an der Schalhaut befestigten Zwischenstück bleibt die Möglichkeit erhalten, die Schalhaut - auch zwischen den beiden Flanschen eines Trägers - durch Verstellung der Gurtung zu krümmen oder die Krümmung zu verändern. Durch die erfindungsgemäße Gestaltung wird also vermieden, dass beim Krümmen der Schalhaut in deren Verlauf insbesondere im Bereich von Flanschen der Träger Knicke oder unerwünschte Abweichungen von der angestrebten Krümmung auftreten.Due to the relative pivoting between the flanges of the carrier and the intermediate piece attached to the formwork remains the opportunity to bend the formwork - even between the two flanges of a carrier - by adjusting the Gurtung or to change the curvature. The design according to the invention thus avoids kinking or undesired deviations from the desired curvature occurring during the curving of the formwork skin during its course, in particular in the region of flanges of the carrier.

Das Zwischenstück, welches an der Außenseite der Schalhaut befestigt ist, ermöglicht außerdem auch bei einer relativ dünnen Schalhaut eine große Eindringtiefe für ein Befestigungselement, so dass dieses von der der Betonierseite abgewandten Seite angebracht werden kann und die dem Beton zugewandte Oberfläche der Schalhaut auch im Bereich der Befestigung ununterbrochen bleiben kann, so dass von Befestigungselementen herrührende Abdrücke im Beton vermieden werden.The intermediate piece, which is attached to the outside of the formwork, also allows for a relatively thin formwork skin a large penetration depth for a fastener so that it can be attached from the concreting side facing away from the concrete and the facing surface of the formwork in the area The attachment can remain uninterrupted, so that resulting from fasteners imprints are avoided in the concrete.

Die Zwischenstücke können Gewindelöcher aufweisen, in die die Flansche der Träger durchsetzende Befestigungsschrauben oder Befestigungsbolzen einschraubbar sind und/oder an den Zwischenstücken können Befestigungsbolzen angeordnet oder befestigt sein, die Befestigungslochungen in den Flanschen der Träger durchsetzen. Somit können die Träger mittels Schraubverbindungen an den ihrerseits an der Schalhaut angeordneten Zwischenstücken verbunden werden.The spacers may have threaded holes into which the flanges of the carrier passing through fastening screws or mounting bolts are screwed and / or on the spacers fastening bolts may be arranged or secured, enforce the mounting holes in the flanges of the carrier. Thus, the carrier can be connected by means of screw on the turn on the formwork panel arranged spacers.

Um die aussteifende Wirkung der Träger gut auf die Schalhaut übertragen zu können, ist es zweckmäßig, wenn die Zwischenstücke verbunden werden.In order to transfer the stiffening effect of the carrier well on the formwork, it is advantageous if the spacers are connected.

Um die aussteifende Wirkung der Träger gut auf die Schalhaut übertragen zu können, ist es zweckmäßig, wenn die Zwischenstücke jeweils für einen Flansch eines Trägers mehrere in Reihe angeordnete Gewindelöcher und/oder Befestigungsbolzen für mehrere an einem gemeinsamen Flansch vorgesehen Befestigungslochungen haben. Dabei können die Zwischenstücke leistenförmig ausgebildet sein und über wenigstens einen Teil der Längserstreckung eines jeweiligen Flansches eines Trägers verlaufen. Entsprechend lang ist die Verbindung zwischen Träger und Schalhaut und entsprechend gut wird die aussteifende Wirkung übertragen.In order to transfer the stiffening effect of the carrier well on the formwork, it is expedient if the spacers each have a plurality of threaded holes arranged in series and / or fastening bolts for a plurality of provided on a common flange Befestigungslochungen for a flange of a carrier. In this case, the spacers may be strip-shaped and extend over at least part of the longitudinal extension of a respective flange of a carrier. Correspondingly long is the connection between the carrier and the formwork, and the stiffening effect is correspondingly well transmitted.

Eine bestmögliche Aussteifung der Schalhaut durch den jeweiligen Träger lässt sich erzielen, wenn die Zwischenstücke jeweils im wesentlichen so lang wie der Träger und/oder sein Flansch sind. Das jeweilige Zwischenstück kann also bei einer derartigen bevorzugten Ausführungsform praktisch den gesamten Flanschverlauf kippbar unterstützen.A best possible stiffening of the formwork skin by the respective carrier can be achieved if the intermediate pieces are each substantially as long as the carrier and / or its flange. The respective intermediate piece can therefore support, in such a preferred embodiment, practically the entire flange profile in a tiltable manner.

Die Schalhaut kann aus Holz, Kunststoff, Metall, Eisen und/oder Stahl bestehen. Dabei erweist sich die Anordnung von Zwischenstücken vor allem bei einer Schalhaut aus Metall, insbesondere aus Stahl, als besonders vorteilhaft, weil nicht nur die Gesamtdicke aus Schalhaut und Zwischenstück eine entsprechend große Eingriffslänge für ein Befestigungselement ergibt, sondern bei einer Schalhaut aus Stahl in Verbindung mit den Flanschen eines V-, U- oder trapezförmigen Trägers bei unmittelbarer gegenseitiger Befestigung zum Beispiel durch Verschweißen ein Hohlprofil bilden würde, bei welchem der der Schalhaut zugehörende Anteil bei einer Verstellung der Gurtungslänge nicht oder kaum in seiner Krümmung verändert werden könnte. Durch die erfindungsgemäßen Zwischenstücke und die an diesen schwenk- oder kippbar vorgesehene Befestigung der Flansche bleibt auch bei einer solchen Schalhaut die Einstellbarkeit der Krümmung selbst im Bereich zwischen den Flanschen der Träger in vorteilhafter Weise erhalten.The formwork can be made of wood, plastic, metal, iron and / or steel. In this case, the arrangement of spacers, especially in a formwork made of metal, especially steel, proves to be particularly advantageous because not only the total thickness of formwork and intermediate piece results in a correspondingly large engagement length for a fastener, but in a formwork made of steel in conjunction with the flanges of a V-, U- or trapezoidal carrier in direct mutual attachment, for example by welding a hollow profile would form, in which the formwork belonging to the formwork Share in an adjustment of the Gurtungslänge not or hardly could be changed in its curvature. By means of the intermediate pieces according to the invention and the fastening of the flanges which can be pivoted or tilted on them, the adjustability of the curvature even in the region between the flanges of the supports is advantageously retained even in such a formwork skin.

Die Zwischenstücke sind zweckmäßigerweise mit der Rückseite der Schalhaut verbunden oder - bei einer Schalhaut aus Metall, Eisen oder Stahl ebenfalls aus Metall, Eisen oder Stahl bestehend - verschweißt. Dies führt zu einer bestmöglichen Verbindung auch der Zwischenstücke mit der Schalhaut, so dass die in die Träger zu leitenden Kräfte überall gut eingeleitet werden können.The spacers are conveniently connected to the back of the formwork or - in a formwork skin of metal, iron or steel also made of metal, iron or steel - welded. This leads to the best possible connection of the intermediate pieces with the formwork, so that the forces to be conducted into the carrier can be introduced well everywhere.

Die erfindungsgemäße Schwenk- oder Kippbarkeit kann dadurch realisiert sein, dass die dem Flansch zugewandte Seite des Zwischenstücks einen konvex gekrümmten Querschnitt hat oder beidseits der Befestigungsstellen abfallend abgeschrägt ist und/oder dass die Unterseite des Flansches des Trägers konvex gekrümmt oder mit gegenüber dem Zwischenstück von der Mitte nach außen zurückweichenden Abschrägungen versehen ist. Eine preiswerte Herstellung sieht dabei eine ebene Oberfläche des Zwischenstücks und eine entsprechend gekrümmte oder nach zwei Seiten abgeschrägte Unterseite des zugehörigen Flansches vor, so dass sich als Zwischenstück eine in ihrem Querschnitt sehr einfache Leiste ergibt, während der Träger bei seiner Fertigung gleich mit der entsprechenden Querschnittsform der Flansche versehen werden kann. An der Berührstelle zwischen Zwischenstück und Flansch ergibt sich so in jedem Falle ein von der Berühr- oder Befestigungsstelle jeweils nach außen zunehmender Zwischenraum, der also eine gegenseitige Verkippung um die Längserstreckungsrichtung erlaubt.The pivoting or tilting according to the invention can be realized in that the flange facing side of the intermediate piece has a convexly curved cross-section or sloping beveled on both sides of the attachment points and / or that the underside of the flange of the support convexly curved or with respect to the intermediate piece of the Center receding bevels provided to the outside. A low-cost production thereby provides a flat surface of the intermediate piece and a correspondingly curved or two sides bevelled underside of the associated flange, so that the intermediate piece is a very simple in its cross-section bar, while the carrier in its manufacture equal to the corresponding cross-sectional shape the flanges can be provided. At the point of contact between the intermediate piece and the flange, in each case, there is an interspace which increases in each case from the contact or attachment point to the outside, that is, a mutual tilting about the Longitudinal direction allowed.

Der den Flansch auf der der Schalhaut abgewandten Seite erfassende Vorsprung, Schraubenkopf, eine Mutter und/oder ein zwischen Schraubenkopf oder Mutter und Flansch befindliches Zwischenteil kann an der dem Flansch zugewandten Seite einen von dem mittleren Bereich nach außen zurückweichenden Querschnitt haben, beispielsweise gerundet oder abgeschrägt sein. Dadurch wird die relative Beweglichkeit zwischen Zwischenstück und Flansch insbesondere im Bereich der Befestigungsstellen nicht durch das eigentliche -Befestigungselement eingeschränkt. Vielmehr kann die relative Verschwenkung oder Verkippung zwischen Zwischenstück und Flansch auch an den jeweiligen Angriffsstellen der Befestigungselemente auf diese Weise praktisch ungehindert erfolgen.The flange on the side facing away from the formwork facing projection, screw head, a nut and / or located between the screw head or nut and flange intermediate part may have on the flange side facing away from the central region outwardly cross-section, for example, rounded or bevelled be. As a result, the relative mobility between adapter and flange is not limited by the actual fastening element, in particular in the region of the fastening points. Rather, the relative pivoting or tilting between spacer and flange can be done practically unhindered at the respective points of attack of the fasteners in this way.

Die insbesondere als Leisten ausgebildeten Zwischenstücke können zu ihrer Längsmitte symmetrisch ausgebildet sein. Somit können sie in praktisch beliebiger Orientierung an der Schalhaut angebracht werden, dass heißt bei ihrer Abringung an der Schalhaut muss nicht eine bevorzugte Lage und Richtung beachtet werden, so dass die Montage erleichtert ist.The formed in particular as strips intermediate pieces may be formed symmetrically to its longitudinal center. Thus, they can be mounted in virtually any orientation on the formwork, that is, when they make their contact with the formwork, a preferred position and direction must not be taken into account, so that the assembly is facilitated.

Die leistenförmigen Zwischenstücke können einen etwa rechteckigen Querschnitt haben, wobei die dem Flansch des Trägers zugewandte Seite des Rechtecks konvex gekrümmt und/oder von dem mittleren Bereich ausgehend beidseits abgeschrägt oder teilkreisförmig oder halbkreisförmig sein kann und ein abgeflachter oder flacher Bereich des Querschnitts an der Außenseite der Schalhaut anliegen kann. Gegenüber einer Alternative, bei welcher auch die der Schalhaut abgewandte Oberfläche des leistenförmigen Zwischenstücks im Hinblick auf eine entsprechende Formgebung des zugehörigen Flansches des Trägers eben ausgebildet ist, kann also auch das Zwischenstück selbst so geformt sein, dass sich die Schwenk- oder Kippmöglichkeit für einen gegebenenfalls ebenen Flansch ergibt.The strip-shaped intermediate pieces may have an approximately rectangular cross-section, wherein the flange of the carrier facing side of the rectangle convexly curved and / or be bevelled starting from the central region on both sides or part-circular or semicircular and a flattened or flat portion of the cross section on the outside of the Formwork can rest. Compared to an alternative in which also the facing surface facing away from the strip-shaped intermediate piece with respect to a corresponding shape of the associated flange of the carrier flat is, so also the intermediate piece itself can be shaped so that the possibility of tilting or tilting results for an optionally flat flange.

Vor allem bei Kombination einzelner oder mehrerer der vorbeschriebenen Merkmale und Maßnahmen ergibt sich eine Schalung für gekrümmte Flächen mit einstellbarer oder veränderbarer Krümmung, bei welcher die Schalhaut als Metall, Kunststoff oder Holz eine hohe Standzeit und Belastbarkeit hat und dennoch die vorteilhaften Träger mit U-, V- oder bevorzugt trapezförmigem Querschnitt zur Anwendung kommen können, die an ihrer der Schalhaut zugewandten Seite von dieser zu einer Art Kastenprofil geschlossen werden. Trotz dieser Bildung eines Hohl- oder Kastenprofils kann die Schalhaut auch zwischen den Flanschen eines Trägers an die jeweilige Krümmung angepasst werden, weil durch das zwischen ihr und den Flanschen befindliche Zwischenstück und die daran vorgesehene Schwenk- oder Kippbarkeit der Flansche die Schalhaut auch zwischen diesen Flanschen gebogen oder gekrümmt beziehungsweise in ihrer Biegung verändert werden kann. Gleichzeitig kann vermieden werden, dass auf der dem Beton zugewandten Seite der Schalhaut Teile der Befestigungselemente sichtbar sind und Abdrücke im Beton verursachen.Especially when combining one or more of the features and measures described above results in a formwork for curved surfaces with adjustable or variable curvature, in which the formwork as metal, plastic or wood has a long service life and resilience and still the advantageous carrier with U, V- or preferably trapezoidal cross section may be used, which are closed on its side facing the formwork facing from this to a kind of box section. Despite this formation of a hollow or box section, the formwork can also be adapted between the flanges of a carrier to the respective curvature, because by the intermediate piece located between it and the flanges and the provided there pivoting or tilting of the flanges, the formwork also between these flanges bent or curved or can be changed in their curvature. At the same time, it can be avoided that parts of the fastening elements are visible on the side of the formwork facing the concrete and cause imprints in the concrete.

Nachstehend ist ein Ausführungsbeispiel der Erfindung anhand der Zeichnung näher beschrieben. Es zeigt in zum Teil schematisierter Darstellung:

Fig. 1
eine Ansicht der Rückseite,
Fig. 2
eine Seitenansicht und
Fig. 3
in vergrößertem Maßstab eine Draufsicht eines Schalungselements der erfindungsgemäßen Schalung mit gekrümmter und hinsichtlich ihrer Krümmung einstellbarer Schalhaut mit als Aussteifungen wirkenden Randstegen und zwei Trägern,
Fig. 4
eine der Fig. 3 entsprechende Darstellung eines Schalungselements mit zwei parallele Ränder aussteifenden Randstegen und einem dazwischen angeordneten Träger mit trapezförmigem Querschnitt sowie
Fig. 5
einen Querschnitt eines Flansches eines der an der Rückseite der Schalhaut zu deren Aussteifung angeordneten Trägers im Bereich seines Befestigungsflansches, der an der der Schalhaut abgewandten Seite eines Zwischenstücks schwenkbar oder kippbar befestigt ist.
An embodiment of the invention will be described in more detail below with reference to the drawing. It shows in partly schematized representation:
Fig. 1
a view of the back,
Fig. 2
a side view and
Fig. 3
on an enlarged scale, a plan view of a formwork element of the formwork according to the invention with a curved and in terms of their curvature adjustable formwork skin with edge webs acting as stiffeners and two straps,
Fig. 4
one of the Fig. 3 corresponding representation of a formwork element with two parallel edges stiffening edge webs and an interposed carrier with trapezoidal cross section and
Fig. 5
a cross section of a flange of one of the arranged on the back of the formwork skin to the stiffening support in the region of its mounting flange which is pivotally mounted or tilted on the side facing away from the formwork facing an intermediate piece.

Fig. 1 bis 4 zeigt ein im Ganzen mit 1 bezeichnetes Schalungselement einer Schalung für gekrümmte Flächen, dass heißt eine derartige Schalung kann aus mehreren derartigen Schalungselementen 1 zusammengesetzt sein, wobei an den vertikalen Rändern 2 auch als Aussteifungen für die Schalhaut wirkende Anschlußstege 3 zum gegenseitigen Verbinden derartiger Schalungselemente 1 vorgesehen sind. Die Schalhaut 4 ist dabei gemäß Fig. 3 gekrümmt und kann hinsichtlich ihrer Krümmung eingestellt oder verstellt werden. Fig. 1 to 4 shows a generally designated 1 formwork element of a formwork for curved surfaces, that is, such a formwork may be composed of several such formwork elements 1, being provided on the vertical edges 2 as stiffeners for the formwork facing connecting webs 3 for interconnecting such formwork elements 1 are. The formwork 4 is according to Fig. 3 curved and can be adjusted or adjusted in terms of their curvature.

Das Schalungselement 1 weist außerdem gemäß Fig. 4 wenigstens einen, gemäß Fig. 3 zwei - gegebenenfalls noch mehr - die Schalhaut 4 zusätzlich zu den Anschlussstegen 3 abstützende Träger 5 auf, die im Ausführungsbeispiel gemäß Fig. 3 und 4 einen etwa trapezförmigen Querschnitt haben, der zu der abgestützten Schalhaut 4 hin offen ist und durch die Schalhaut 5 praktisch zu einem Hohlquerschnitt ergänzt wird.The formwork element 1 also according to Fig. 4 at least one, according to Fig. 3 two - possibly even more - the formwork 4 in addition to the connecting webs 3 supporting carrier 5, in the embodiment according to 3 and 4 have an approximately trapezoidal cross-section, which is open to the supported formwork facing 4 and is complemented by the formwork 5 virtually to a hollow cross-section.

Der oder die Träger 5 haben an ihren der Schalhaut 4 zugewandten Rändern Befestigungsflansche 6, wobei ein derartiger Befestigungsflansch 6 in Fig. 5 besonders deutlich dargestellt ist. Dabei erkennt man, dass der freie Rand dieses Flansches 6 von der Schalhaut 4 weggebogen ist. Diese Befestigungsflansche 6 dienen in noch zu beschreibender Weise zum Verbinden der Träger 5 mit der Schalhaut 4.The one or more carriers 5 have at their edges facing the formwork facing 4 mounting flanges 6, wherein such a mounting flange 6 in Fig. 5 is shown particularly clearly. It can be seen that the free edge of this flange 6 is bent away from the formwork 4. These mounting flanges 6 are used in a manner to be described for connecting the carrier 5 to the formwork skin. 4

Für die schon erwähnte Einstellung der Krümmung der Schalhaut 4 und als zusätzliche Aussteifung des Schalungselements 1 ist eine an dem oder den Trägern 5 mit Abstand zur Schalhaut 4 und an den auch als Träger oder Aussteifung wirkenden Anschlußstegen 5 angreifende Gurtung 7, im Ausführungsbeispiel gemäß Fig. 1 und 2 sogar drei Gurtungen 7, vorgesehen, wobei die wirksame Länge dieser Gurtung 7 mittels einer oder mehrerer zu ihr gehörenden Spannschrauben 8 zur Veränderung der Krümmung der Schalhaut 4 ähnlich wie bei einer Großflächenschalung gemäß DE 24 26 708 C3 oder EP 0 514 712 B1 verstellbar ist.For the already mentioned adjustment of the curvature of the formlining 4 and as an additional stiffening of the formwork element 1 is on the one or more carriers 5 at a distance from the formwork skin 4 and acting as a support or stiffening connecting webs 5 attacking Gurtung 7, according to the embodiment Fig. 1 and 2 even three straps 7, provided, wherein the effective length of this belt 7 by means of one or more belonging to her tightening screws 8 to change the curvature of the formwork 4 similar to a large-area formwork according to DE 24 26 708 C3 or EP 0 514 712 B1 is adjustable.

Die Schalhaut 4 besteht aus Metall, insbesondere Stahl, Kunststoff oder Holz und erlaubt aufgrund ihrer Festigkeit oder gegebenenfalls ihrer Dicke eine hohe Belastung.The formwork 4 is made of metal, especially steel, plastic or wood and allows due to their strength or optionally their thickness, a high load.

Damit dennoch die Krümmung auch zwischen den Befestigungsflanschen 6 vorgesehen und etwa in gleicher Weise wie außerhalb eines Trägerquerschnitts verändert werden kann, sind zwischen den Befestigungsflanschen 6 und der Schalhaut 4 gemäß Fig. 3 und 4 und vor allem gemäß Fig. 5 Zwischenstücke 9 angeordnet und die Befestigungsflansche 6 der Träger 5 sind an diesen relativ zu ihnen um ihre Längserstreckungsrichtung schwenkbar oder kippbar befestigt, so dass die Schalhaut 4 mit dem jeweiligen Zwischenstück 9 zusammen gegenüber dem jeweiligen Befestigungsflansch 6 eine entsprechende Relativbewegung bei der Veränderung ihrer Krümmung durchführen kann.So that the curvature can nevertheless be provided between the attachment flanges 6 and can be changed approximately in the same way as outside a carrier cross-section, between the attachment flanges 6 and the skin 4 according to FIG 3 and 4 and especially according to Fig. 5 Arranged intermediate pieces 9 and the mounting flanges 6 of the carrier 5 are pivotally or tiltably attached to these relative to them about their longitudinal extension direction, so that the formwork skin 4 with the respective intermediate piece 9 together relative to the respective mounting flange 6 a corresponding relative movement in the Change their curvature can perform.

Gemäß Fig. 4 weisen die Zwischenstücke 9 Gewindelöcher 10 auf, in die die Flansche 6 der Träger 5 durchsetzende Befestigungsschrauben 11 oder Befestigungsbolzen einschraubbar sind, wie man es deutlich in Fig. 4 erkennt. Somit wird vermieden, dass ein entsprechendes Befestigungselement unmittelbar an der Schalhaut 4 angreift, dass heißt das Zwischenstück 9 erhält eine zusätzliche Funktion.According to Fig. 4 have the spacers 9 threaded holes 10, in which the flanges 6 of the carrier 5 passing through fastening screws 11 or mounting bolts are screwed, as can be clearly seen in Fig. 4 recognizes. Thus, it is avoided that a corresponding fastening element acts directly on the formwork skin 4, that is, the intermediate piece 9 receives an additional function.

Im Ausführungsbeispiel_ist vorgesehen, dass die Zwischenstücke 9 im wesentlichen so lang wie der zugehörige Träger 5 und/oder sein Flansch 6 sind, so dass sich über die gesamte Länge der Träger 5 der in Fig. 5 dargestellte Querschnitt ergibt. Die Zwischenstücke 9 haben dabei gemäß Fig. 1 jeweils für einen Flansch 6 eines Trägers 5 mehrere in Reihe angeordnete Gewindelöcher 10 entsprechend der Zahl der Befestigungsschrauben 11. Denkbar wäre aber auch, dass die Zwischenstücke 9 eines Befestigungsflansches 6 unterbrochen sind und nur im Bereich der Befestigungsschrauben 11 angeordnet werden. Ein durchgehendes Zwischenstück 9, welches zweckmäßigerweise leistenförmig ausgebildet ist, verbessert aber die Aussteifung und die Übertragung von Kräften zwischen Schalhaut 4 und Träger 5.In the exemplary embodiment, it is provided that the intermediate pieces 9 are substantially as long as the associated carrier 5 and / or its flange 6, so that over the entire length of the carrier 5 of the in Fig. 5 shown cross-section results. The spacers 9 have according to Fig. 1 each for a flange 6 of a carrier 5 a plurality of serially arranged threaded holes 10 corresponding to the number of fastening screws 11. It would also be conceivable that the spacers 9 of a mounting flange 6 are interrupted and are arranged only in the area of the fastening screws 11. A continuous intermediate piece 9, which is expediently strip-shaped, but improves the stiffening and the transmission of forces between formwork skin 4 and carrier. 5

Die Zwischenstücke 9 sind gemäß Fig. 5 mit der Rückseite der Schalhaut 4 verbunden und, sofern beide aus Metall, bevorzugt aus Eisen oder Stahl bestehen, damit verschweißt.The spacers 9 are according to Fig. 5 connected to the back of the formwork 4 and, if both made of metal, preferably made of iron or steel, welded to it.

Damit zwischen den Befestigungsflanschen 6 und der Schalhaut 4 beziehungsweise den Zwischenstücken 9 die relative Schwenk- beziehungsweise Kippbarkeit um eine in Längserstreckungsrichtung der jeweiligen Flansche 6 verlaufende Achse möglich ist, ist die Unterseite des Flansches 6 gemäß Fig. 4 etwa konvex gekrümmt beziehungsweise mit gegenüber dem Zwischenstück 9 von der Mitte nach außen zurückweichenden Abschrägungen 61 versehen. Anhand der Fig. 4 kann man deutlich erkennen, dass der Flansch 6 aufgrund dieser Abschrägungen 61 auf dem Zwischenstück 9 schaukeln kann, dass heißt umgekehrt kann das Zwischenstück 9 mit der daran befindlichen Schalhaut 4 entsprechende Bewegungen durchführen, wenn die Krümmung der Schalhaut 4 geändert wird, ohne dass der Flansch 6 und der Träger 5 diese be- oder gar verhindern.Thus, between the mounting flanges 6 and the formwork 4 and the intermediate pieces 9, the relative pivoting or tilting about an axis extending in the longitudinal direction of the respective flanges 6 axis is possible, the underside of the flange 6 according to Fig. 4 curved approximately convex or provided with respect to the intermediate piece 9 from the center to the outside receding bevels 61. Based on Fig. 4 can be clearly seen that the flange 6 due to these bevels 61 on the intermediate piece 9 can rock, that is, conversely, the intermediate piece 9 with the formwork facing 4 perform corresponding movements when the curvature of the formwork 4 is changed without the flange 6 and the carrier 5 this or even prevent.

Noch weiter erleichtert wird diese relative gegenseitige Beweglichkeit oder Schwenkbarkeit dadurch, dass der den Flansch 6 auf der der Schalhaut 4 abgewandten Seite erfassende Vorsprung oder Schraubenkopf 11a oder im Ausführungsbeispiel ein Zwischenschraubenkopf 11a und Flansch 6 befindliches Zwischenteil 12 an der dem Flansch 6 zugewandten Seite einen von seinem mittleren Bereich nach außen zurückweichenden Querschnitt hat, beispielsweise gerundet oder - wie im Ausführungsbeispiel erkennbar entgegengesetzt abgeschrägt ist. Dadurch sind die Abschrägungen 61 des Flansches 6 zwischen dem Zwischenstück 9 und diesem Zwischenteil 12 weitestgehend frei beweglich und können also entsprechend verschwenkt oder verkippt werden, dass heißt umgekehrt kann die Schalhaut relativ zu dem Flansch 6 eine entsprechende Schwenk- oder Kippbewegung durchführen, wenn ihre Krümmung verändert wird. Dadurch wird vermieden, dass zwischen den beiden Flanschen 6 eines Trägers 5 die Schalhaut 4 einer Veränderung der Krümmung nicht folgen kann.This relative mutual mobility or pivotability is further facilitated by the fact that the flange 6 on the side facing away from the formwork 4 projection or screw head 11a or in the exemplary embodiment, an intermediate screw head 11a and flange 6 befindliches intermediate part 12 on the flange 6 side facing one of its recessed cross-section has its central region, for example, rounded or - as shown in the embodiment opposite beveled opposite. Thus, the chamfers 61 of the flange 6 between the intermediate piece 9 and this intermediate part 12 are largely free to move and can therefore be pivoted or tilted accordingly, that is, conversely, the formwork skin relative to the flange 6 perform a corresponding pivoting or tilting movement when their curvature is changed. This avoids that between the two flanges 6 of a carrier 5, the formwork 4 can not follow a change in curvature.

Die Zwischenstücke 9 sind im Ausführungsbeispiel als Leisten ausgebildet und zu ihrer Längsmitte symmetrisch, so dass sie in beliebiger Orientierung angebracht werden können. Der Querschnitt ist dabei rechteckig, könnte aber an der dem Flansch 6 zugewandten Seite auch konvex gekrümmt sein und dabei abgeschrägt und teilkreisförmig oder sogar halbkreisförmig geformt sein, um dadurch die schon beschriebene relative Schwenkbewegung zwischen dem Zwischenstück 9 und dem Flansch 6 zu ermöglichen.The intermediate pieces 9 are formed in the embodiment as strips and symmetrical about their longitudinal center, so that they can be mounted in any orientation. The cross section is rectangular, but could also be curved convexly on the side facing the flange 6 and thereby bevelled and be part-circular or even semi-circular shaped, thereby enabling the already described relative pivotal movement between the intermediate piece 9 and the flange 6.

Die Schalhaut 4 kann also mit Hilfe der Gurtung 7 und der Spannschraube 8 hinsichtlich ihrer Krümmung verändert werden, ohne dass eine solche Veränderung der Krümmung insbesondere zwischen den Flanschen 6 eines jeweiligen Trägers 5 aufgrund der Befestigung daran unterbunden und dadurch über den Querschnitt der Schalhaut 4 unregelmäßig wird. Trotz der Aussteifung der Schalhaut 4 mit den über Flansche 6 angreifenden Trägern 5 kann also die Schalhaut 4 in ihrer Krümmung eingestellt oder verstellt werden, wobei sich dies auch zwischen den Flanschen 6 eines Trägers 5 fortsetzt, weil die Schalhaut trotz ihrer indirekten Verbindung mit den Flanschen 6 relativ dazu Kipp- oder Schwenkbewegungen entsprechend ihrer jeweiligen Krümmung durchführen kann. Dabei ist nützlich, dass die Krümmungsmittelpunkte auf einer Achse liegen, die parallel zur Längserstreckungsrichtung der Träger verläuft.The formlining 4 can therefore be changed with respect to its curvature with the aid of the belt 7 and the tightening screw 8, without such a change in the curvature especially between the flanges 6 of a respective carrier 5 due to the attachment thereto prevented and thereby over the cross section of the formwork 4 irregular becomes. Despite the stiffening of the formwork 4 with the flanges 6 attacking carriers 5 so the formwork 4 can be adjusted or adjusted in its curvature, and this continues between the flanges 6 of a carrier 5, because the formwork despite their indirect connection with the flanges 6 relative to tilting or pivoting movements can perform according to their respective curvature. It is useful that the centers of curvature lie on an axis which is parallel to the longitudinal direction of the carrier.

Das Schalungselement 1 kann mit weiteren derartigen Schalungselementen 1 zu einer Schalung aufgebaut werden. Dabei ist eine hinsichtlich ihrer Krümmung einstellbare Schalhaut 4 vorgesehen, die von rückseitigen Trägern 5 abgestützt wird, um ein steifes, dem Betonierdruck standhaltendes Schalungselement 1 zu schaffen. Die vorzugsweise im Querschnitt trapezförmigen Träger 5 haben an ihren Rändern Befestigungsflansche 6 und sind mit Abstand zur Schalhaut 4 mit wenigstens einer Gurtung 7 versehen, deren Länge zur Einstellung oder Änderung der Krümmung der Schalhaut 4 verstellbar ist. Die Schalhaut 4 besteht bevorzugt aus Stahl oder Kunststoff oder Holz und zwischen den Befestigungsflanschen 6 der Träger 5 und der Schalhaut 4 sind Zwischenstücke 9 angeordnet, wobei die Befestigungsflansche 6 an diesen relativ zu ihnen um ihre Längserstreckungsrichtung schwenkbar oder kippbar befestigt sind, in dem der Querschnitt der Flansche 6 und/oder der Zwischenstücke 9 und/oder 12 konvex oder mit Abschrägungen 61 versehen ist.The formwork element 1 can be constructed with other such formwork elements 1 to a formwork. In this case, an adjustable in terms of their curvature formwork 4 is provided, which is supported by the rear supports 5 to provide a rigid, the concreting pressure-resistant formwork element 1. The preferably trapezoidal in cross-section carrier 5 have at their edges mounting flanges 6 and are provided at a distance from the formwork skin 4 with at least one belt 7 whose length is adjustable to adjust or change the curvature of the formwork 4. The formwork 4 is preferably made of steel or plastic or wood and between the mounting flanges 6 of the carrier 5 and the formwork 4 are intermediate pieces 9, wherein the mounting flanges 6 are attached to these relative to their pivoting or tilting about their longitudinal extension direction, in which the cross-section of the flanges 6 and / or the intermediate pieces 9 and / or 12 is provided convexly or bevels 61.

Claims (11)

  1. Round formwork having at least one formwork element (1) comprising a formwork facing (4) which is adjustable in its curvature, said formwork element comprising reinforcements and/or at least one carrier (5) that supports the formwork facing (4), said carrier having a U-shaped, V-shaped or trapezoidal cross section open towards the supported formwork facing (4) and having fixing flanges (6) on its edges facing the formwork facing (4) for connecting to the reverse side of the formwork facing (4), and with a strap (7) acting on the reinforcements an the carrier or carriers (5) at a spacing from the formwork facing (4), the effective length of the strap (7) being adjustable in order to vary the curvature of the formwork facing (4), characterised in that intermediate members (9) are arranged between the fixing flanges (6) of the carriers (5) and the formwork facing (4) and the fixing flanges (6) of the carriers (5) are attached to these intermediate members so as to be pivotable or tiltable about their longitudinal direction.
  2. Round formwork according to claim 1, characterised in that the intermediate members (9) have threaded holes (10) into which fixing screws (11) or fixing bolts that pass through the flanges (6) of the carriers (5) can be screwed and/or in that fixing bolts which pass through fixing holes in the flanges of the carriers are mounted or fixed on the intermediate members.
  3. Round formwork according to claim 1 or 2, characterised in that the intermediate members (9) have a plurality of threaded holes (10) arranged in a row, for a respective flange (6) of a carrier (5), and/or fixing bolts for a plurality of fixing holes provided on a common flange.
  4. Round formwork according to one of claims 1 to 3, characterised in that the intermediate members (9) are in the form of bars and extend over at least part of the longitudinal extent of a respective flange of a carrier.
  5. Round formwork according to one of claims 1 to 4, characterised in that the intermediate members (9) are each substantially as long as the carrier (5) and/or its flange (6).
  6. Round formwork according to one of claims 1 to 5, characterised in that the formwork facing (4) is made of metal, iron and/or steel or wood or plastics.
  7. Round formwork according to one of claims 1 to 6, characterised in that the intermediate members (9) are connected to the reverse side of the formwork facing (4) or, in the case of a formwork facing made of metal, iron or steel, are also made of metal, iron or steel and are welded thereto.
  8. Round formwork according to one of claims 1 to 7, characterised in that the side of the intermediate member (9) facing the flange (6) has a cross-section of convex curvature or is chamfered to fall away on both sides of the fixing points and/or in that the underside of the flange (6) of the carrier (5) has a convex curvature or is provided with chamfers (61) that fall away outwardly from the centre in relation to the intermediate member (9).
  9. Round formwork according to one of claims 1 to 8, characterised in that the projection, screw head, nut and/or intermediate member (12) located between the screw head (11a) or nut and flange (6), which grips the flange (6) on the side remote from the formwork facing (4), has on the flange (6) facing side a cross section that falls away outwardly from the central region, e.g. is rounded off or chamfered.
  10. Round formwork according to one of claims 1 to 9, characterised in that the intermediate members (9) formed as bars, in particular, are constructed symmetrically with respect to their central longitudinal axis,
  11. Round formwork according to one of claims 1 to 10, characterised in that the bar-like intermediate members (9) have a substantially rectangular cross-section, wherein the side of the rectangle that faces the flange of the carrier (5) has a convex curvature and/or is chamfered on both sides starting from the central region or is segment-shaped or semicircular, and a flattened or flat region of the cross-section abuts on the outside of the formwork facing (4).
EP03794971A 2002-09-02 2003-08-29 Circular formwork Expired - Lifetime EP1537281B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SI200331337T SI1537281T1 (en) 2002-09-02 2003-08-29 Circular formwork
CY20081100988T CY1108783T1 (en) 2002-09-02 2008-09-15 ROUND WOODEN TYPE

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10240372 2002-09-02
DE10240372A DE10240372B4 (en) 2002-09-02 2002-09-02 formwork
PCT/EP2003/009586 WO2004025050A1 (en) 2002-09-02 2003-08-29 Circular formwork

Publications (2)

Publication Number Publication Date
EP1537281A1 EP1537281A1 (en) 2005-06-08
EP1537281B1 true EP1537281B1 (en) 2008-06-18

Family

ID=31502249

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03794971A Expired - Lifetime EP1537281B1 (en) 2002-09-02 2003-08-29 Circular formwork

Country Status (15)

Country Link
US (1) US7048249B2 (en)
EP (1) EP1537281B1 (en)
AT (1) ATE398714T1 (en)
AU (1) AU2003266324A1 (en)
BR (1) BR0313907A (en)
CA (1) CA2497358C (en)
CY (1) CY1108783T1 (en)
DE (2) DE10240372B4 (en)
DK (1) DK1537281T3 (en)
EA (1) EA006665B1 (en)
ES (1) ES2308023T3 (en)
PL (1) PL208756B1 (en)
PT (1) PT1537281E (en)
SI (1) SI1537281T1 (en)
WO (1) WO2004025050A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008021202A1 (en) 2008-04-28 2009-10-29 Marcus Sundermann Formwork and formwork of concrete construction
ES2335732B8 (en) * 2009-07-15 2012-08-01 Sistemas Tecnicos De Encofrados S.A. ADJUSTABLE PANEL FOR THE WRAPPING OF CURVED WALLS
FR2992010B1 (en) * 2012-06-14 2016-03-04 Hussor STIFFENER FOR DEFORMABLE WALL OF A BANK
IT201700017631A1 (en) * 2017-02-16 2018-08-16 Emmerre S R L FORMWORK FOR THE CONSTRUCTION OF CONCRETE MADE DETAILS
BE1028871B1 (en) 2020-12-09 2022-07-11 Bio Dynamics Nv FORMWORK FOR CONCRETE ANNULAR TANK WALL AND PROCEDURE FOR FORMWORK FOR CONCRETE ANNULAR TANK WALL

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2426708C3 (en) * 1974-06-01 1978-06-08 Josef 7611 Steinach Maier Large area formwork
DE3333619C2 (en) * 1983-09-17 1986-05-15 Josef 7611 Steinach Maier Formwork for circular buildings
DE3536816A1 (en) * 1985-10-16 1987-04-16 Josef Maier FORMWORK FOR ROUND OR MULTI-SIDED BUILDINGS
DE8815339U1 (en) * 1988-12-09 1989-03-23 Werner Zapf KG, 8580 Bayreuth Formwork for large-format curved precast reinforced concrete elements
FR2650669B1 (en) * 1989-08-04 1993-10-29 Equipement Menager Cie Europ TEMPERATURE MEASURING DEVICE FOR INDUCTION COOKING APPARATUS AND APPARATUS COMPRISING SUCH A DEVICE
US5125617A (en) * 1990-03-29 1992-06-30 Miller Alan P Adjustable radius walers for forming
DE4116439C1 (en) * 1991-05-18 1992-08-27 Maier G Paschal Werk
DE4322271C2 (en) * 1993-07-05 1997-08-07 Maier G Paschal Werk Formwork panel with carrier with an approximately U-shaped cross-section
ATE388289T1 (en) * 2000-09-18 2008-03-15 Ulma C Y E S Coop MODULAR CURVED FORMWORK WITH VARIABLE RADIUS

Also Published As

Publication number Publication date
DE50310008D1 (en) 2008-07-31
PL208756B1 (en) 2011-06-30
SI1537281T1 (en) 2008-12-31
ATE398714T1 (en) 2008-07-15
EA006665B1 (en) 2006-02-24
CA2497358A1 (en) 2004-03-25
BR0313907A (en) 2005-07-12
WO2004025050A1 (en) 2004-03-25
US7048249B2 (en) 2006-05-23
EA200500436A1 (en) 2005-08-25
US20050263672A1 (en) 2005-12-01
ES2308023T3 (en) 2008-12-01
CA2497358C (en) 2011-06-07
DK1537281T3 (en) 2008-10-20
DE10240372A1 (en) 2004-03-11
CY1108783T1 (en) 2014-04-09
PT1537281E (en) 2008-09-30
DE10240372B4 (en) 2004-09-02
PL373919A1 (en) 2005-09-19
EP1537281A1 (en) 2005-06-08
AU2003266324A1 (en) 2004-04-30

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