DE2426708C3

DE2426708C3 - Large area formwork

Info

Publication number: DE2426708C3
Application number: DE19742426708
Authority: DE
Inventors: Josef 7611 Steinach Maier
Original assignee: Individual
Current assignee: Individual
Priority date: 1974-06-01
Filing date: 1974-06-01
Publication date: 1978-06-08
Also published as: DE2426708B2; DE2426708A1

Description

Beispielsweise können als Gurtabschnitt jeweils zwei einander entgegengesetzt ansteigende Gewinde aufweisende Bolzen gegeneinander gerichtet vorgesehen sein, welche in eine gemeinsame frei drehbare Spannhülse mit entsprechenden Gegengewinden eingreifen, und die Bolzen können jeweils im Trägerbereich um eine trägerparallele Achse schwenkbar angelenkt sein. Dies ist eine besonders einfache Gurtung, da sie zum Teil aus handelsüblichen Teilen bestehen kann. Dennoch ist eine gute Einstellbarkeit der Länge der Gurtabschnitte in der einen oder a.Kleren Richtung und eine gute Aufnahme in diesen Gurtabschnitten von Zug- oder Druckkräften je nach Krümmungsrichtung der Schalhaut möglich.For example, two oppositely rising threads can be used as the belt section Bolts directed against one another are provided, which in a common freely rotatable clamping sleeve engage with corresponding mating threads, and the bolts can each in the carrier area by one Axis parallel to the carrier can be pivoted. This is a particularly easy strapping as it is made in part commercially available parts. Still is one good adjustability of the length of the strap sections in one or the other direction and good absorption in These belt sections of tensile or compressive forces are possible depending on the direction of curvature of the formlining.

Weitere zweckmäßige Ausgestaltungen ergeben sich aus den UnteranspOchen.Further useful refinements result from the sub-claims.

Nachstehend ist die Erfindung anhand der Zeichnung noch näher beschrieben. Es zeigtThe invention is described in more detail below with reference to the drawing. It shows

F i g. 1 a plan view, F i g. 2 a view and

F i g. 3 einen vertikalen Schnitt durch eine aus zwei mit Hilfe verstellbarer Gurtabschnitte gekrümmten Großflächenschalelementen erstellte Schalung für einen gebogenen Wandabschnitt bzw. ein Segment aus einem Behälter od. dgl.F i g. 3 shows a vertical section through one of two belt sections curved with the aid of adjustable belt sections Large-area formwork elements created for one curved wall section or a segment of a container or the like.

Eine GroBflächenschalung — im folgenden auch Schalelement 1 genannt — soll zum Einschalen gekrümmter Flächen dienen und dabei in zweckmäßiger Weise auf verschiedene Krümmungen einstellbai seinA large-area formwork - also called formwork element 1 in the following - is intended for formwork serve curved surfaces and thereby be adjustable to different curvatures in an expedient manner

Das Schalelement 1 weist dazu Träger 2 mit Schenkeln 3 auf, welche mit einem freien Rand 4 an der Schalhaut 5 angreifen. Dabei sind die Schenkel 3 der Träger 2 im Bereich ihres Angriffes an der Schalhaut 5 ohne bleibende Verformung seitlich bewegbar, damit sie sich der entsprechenden Krümmungsbewegung der Schalhaut 5 gut anpassen können. An den Trägern 2 sind quer zu diesen verlaufende, sie verbindende, in hrer Länge zwischen ihnen verstellbare Gurtabschnitte 6 angebrachtThe formwork element 1 has to support 2 with legs 3, which with a free edge 4 on the Attack formlining 5. The legs 3 of the girders 2 are in the area of their engagement with the formwork skin 5 Can be moved laterally without permanent deformation, so that it follows the corresponding curvature of the Can adapt formlining 5 well. On the carriers 2 are transverse to these, connecting them, in hrer Length between them adjustable strap sections 6 attached

Man erkennt vor allem in Fig. 1, daß die Gurtabschnitte 6 nahe an der von der Schalhaut 5 abgewandten Außenseite der Träger 2 an dort nach außen abstehenden Vorsprüngen 7 angreifen. Dadurch kann die Verstellung der Gurtabschnitte 6 besser im Sinne einer Krümmung der Schalhaut S wirksam werden. Wird ein Gurtabschnitt 6 verkürzt, ergibt dies eine konvexe Krümmung der Schalhaut 5, während eine entsprechend große Verlängerung eines Gurtabschnittes 6 eine konkave Krümmung ergibt. Beim Einschalen einer gekrümmten Wand wird dabei gemäß F i g. 1 die eine Schalhaut 5 konvex und die gegenüberstehende so Schalhaut 5 konkav gekrümmt, so daß sich mit den Schalelementen 1 eine gekrümmte Wand mit gleichbleibender Dicke einschalen läßt. Gegebenenfalls ist dabei sogar über die Höhe einer solchen Wand eine Veränderung der Krümmung durch unterschiedlich starke Verstellung der in verschiedenen Höhen angeordneten Gurte möglich.It can be seen especially in Fig. 1 that the strap sections 6 close to the outside of the carrier 2 facing away from the formwork skin 5 at there to the outside attack protruding projections 7. This allows the adjustment of the strap sections 6 better in the sense a curvature of the formlining S become effective. If a belt section 6 is shortened, this results in a convex curvature of the formwork skin 5, while a correspondingly large extension of a belt section 6 results in a concave curvature. When shuttering a curved wall, according to FIG. 1 the a formwork skin 5 convex and the opposite so Formwork skin 5 curved concavely, so that with the formwork elements 1 a curved wall with a constant Can be shelled thick. If necessary, there is even one over the height of such a wall Change of curvature by adjusting the different heights arranged straps possible.

Die Gurtabschnitte 6 werden im Ausführungsbeispiel mittels in der Orientierungsrichtung der Gurtabschnitte verlaufenden Schraubspindeln in ihrer Länge verstellt. Dazu sind als Gurtabschnitte jeweils zwei einander entgegengesetzt ansteigende gewindeaufweisende Bolzen 8 gegeneinander gerichtet vorgesehen, welche in eine gemeinsame frei drehbare Spannhülse 9 mit entsprechenden Gegengewinden eingreifen. Im Trägerbereich sind die Bolzen 8 jeweils um eine trägerparallele Achse 10 schwenkbar angelenkt- Durch Verdrehen der entsprechende Angriffsmögüchkeiten für ein Werkzeug aufweisenden Spannhülse 9 werden die Vorspringe 7 und damit die Außenseiten der Träger 2 mehr oder weniger zusammengezogen oder auseinandergedrückt Die dabei entstehende Krümmung der Schalhaut 5 und die entsprechende Verdrehung der Träger gegeneinander wird an den Gurtabschnitten durch deren gelenkige Befestigung ausgeglichen. Man erkennt, daß die Spannhülse 9 einen Durchtritt 11 für einen durchsteckbaren Hebel zum Verdrehen aufweistThe belt sections 6 are in the exemplary embodiment by means of in the orientation direction of the belt sections extending screw spindles adjusted in length. For this purpose, two are each other as strap sections oppositely increasing thread-having bolts 8 directed against one another are provided, which in engage a common freely rotatable clamping sleeve 9 with corresponding mating threads. In the carrier area the bolts 8 are each pivotably articulated about an axis 10 parallel to the carrier- by rotating the The projecting rings 7 become the corresponding attack possibilities for a clamping sleeve 9 having a tool and thus the outer sides of the carrier 2 more or less pulled together or pushed apart The resulting curvature of the formwork skin 5 and the corresponding rotation of the beams against each other is balanced on the strap sections by their articulated attachment. You can see that the Clamping sleeve 9 has a passage 11 for a push-through Has lever to rotate

Im Ausführungsbeispiel ist an jedem Träger 2 ein Widerlager 12 mit jeweils zwei trägerparallelen Achsenstücken 10 vorgesehen, welche eine am Ende des jeweiligen Bolzens 8 angeordnete öse 13 durchsetzen. Diese Widerlager 12 bilden den vorerwähnten Vorsprung 7. Die Ösen 13 sind in F i g. 1 nicht erkennbar, da sie unterhalb der Lagerung der Achsenstücke 10 zu liegen kommen.In the exemplary embodiment, an abutment 12, each with two parallel beams, is on each carrier 2 Axle pieces 10 are provided, which pass through an eyelet 13 arranged at the end of the respective bolt 8. These abutments 12 form the aforementioned projection 7. The eyelets 13 are shown in FIG. 1 not recognizable because they come to lie below the bearing of the axle pieces 10.

Das Widerlager 12 mit der gelenkigen Lagerung für die Quergurte 6 ist am Träger lösbar befestigt, so daß es in unterschiedlichen Höhen an diesem Träger anbringbar istThe abutment 12 with the articulated mounting for the transverse straps 6 is releasably attached to the carrier so that it can be attached to this carrier at different heights

Man erkennt in den Figuren, daß Träger 2 mit etwa U-förmigem Querschnitt vorgesehen sind, deren U-Schenkel 3 durch einen Quersteg 16 verbunden sind, velcher sich auf der von der Schalhaut 5 abgewandten Seite befindet. Zumindest dieser U-Quersteg 16 der Träger 2 ist mit übereinanderliegenden, vorzugsweise schlüssellochartigen Lochungen 17 zum Einhängen der Widerlager 12 und zusätzlich zum Angriff von Spannelementen IS od. dgl. versehen. Je nach Abstand dieser Lochungen 17 können die Widerlager 12 in mehr oder weniger großen Stufensprüngen in unterschiedlichen Höhen angebracht werden. In erster Linie werden sie jedoch vor allem im oberen und unteren Trägerbereich angebracht werden.It can be seen in the figures that carriers 2 are provided with an approximately U-shaped cross-section, their U-legs 3 are connected by a transverse web 16, velcher on the facing away from the formwork skin 5 Side is located. At least this U-transverse web 16 of the carrier 2 is preferably one on top of the other Keyhole-like holes 17 for hanging the abutment 12 and in addition to attack Clamping elements IS or the like. Provided. Depending on the distance these holes 17, the abutment 12 in more or less large increments in different Heights are attached. However, they are primarily used in the upper and lower support area be attached.

Gemäß Fig. 1 übergreift das Widerlager 12 der Quergurtung den U-Quersteg 16 an den sich daran anschließenden Randbereich der U-Schenkel 3 formschlüssig. Dadurch ist eine bessere Übertragung der Zug- bzw. Druckkräfte von den verstellbaren Gurtabschnitten auf die Träger 2 möglich.According to FIG. 1, the abutment 12 of the transverse chord engages over the U-transverse web 16 on it adjoining edge area of the U-legs 3 in a form-fitting manner. This ensures a better transmission of the Tensile or compressive forces from the adjustable belt sections on the carrier 2 are possible.

Die Schenkel 3 der U-förmigen Träger 2 laufen im Querschnitt von dem U-Quersteg 16 aus schräg auseinander. Im Angriffsbereich an der Schalhaut 5 ergibt sich dadurch ein relativ großer Abstand der Flansche 19, so daß auch zwischen diesen Flanschen 19 die Schalhaut 5 gut an die jeweils vorgesehene Krümmung anpaßbar ist und eine solche Krümmung in dem Befestigungsbereich der Träger 2 gut mitmachen kann, was durch die Bewegbarkeit der Schenkel 3 ebenfalls begünstigt wird.The legs 3 of the U-shaped carrier 2 run obliquely in cross section from the U-transverse web 16 apart. In the area of attack on the formwork skin 5, this results in a relatively large distance between the Flanges 19, so that between these flanges 19, the formwork skin 5 is well connected to the one provided in each case Curvature is adaptable and can take part in such a curvature in the fastening area of the carrier 2 can, which is also favored by the mobility of the legs 3.

Mit Hilfe der vorbeschriebenen Schalelemente lassen sich auch gewölbte Decken od. dgl. herstellen.With the help of the above-described formwork elements, vaulted ceilings or the like can also be produced.

Im Ausführungsbeispiel ist noch dargestellt, daß die Schenkel 3 der Träger 2 mit vorzugsweise längenverstellbaren Distanzstücken 25 gegeneinander verstellbar und festlegbar sind. Dadurch läßt sich eine Einstellung auf bestimmte Krümmungen der Schalhaut vornehmen oder festlegen.In the exemplary embodiment it is also shown that the legs 3 of the carrier 2 are preferably adjustable in length Spacers 25 are mutually adjustable and fixable. This allows a setting to make or set certain curvatures of the formlining.

For this purpose 2 sheets of drawings

Claims

Patent claims:

1. Large area formwork for differently curved Surfaces with a formwork skin that is adjustable with respect to its curvature and supports them Girders and with attacking the girders at a distance from the formlining, from individual sections formed transverse straps or the like, characterized in that the carrier (2) has an approximately Have a U-shaped cross-section, the U-legs (3) of which are connected by a transverse web (16), which is on the side facing away from the formwork facing that the legs (3) of the U-shaped Beam (2) seen in cross section from the U-transverse leg (16) run obliquely and with their free ends (4) each attack the formwork skin (5) that the legs (3) of the carrier (2) without permanent deformation can be moved laterally and that the transverse to these on the carriers and the belt sections (6) connecting them are variable in length between the carriers (2).

2. Large-area formwork according to claim 1, characterized in that the belt sections (6) close to the outside of the carrier (2) facing away from the formwork skin (5), possibly still there Attack protruding projections (7).

3. Large-area formwork according to claim 1 or 2, characterized in that the belt sections (6) are adjustable in length by means of screw spindles running in their orientation direction.

4. Formwork according to claim 1 or 2, characterized in that the belt section (6) in each case two oppositely rising threads having bolts (8) directed against each other are provided, which in a common freely rotatable clamping sleeve (9) with corresponding mating threads engage, and that the bolts (8) each in the carrier area around an axis (10) parallel to the carrier are pivotably articulated.

5. Formwork according to claim 3 or 4, characterized in that a on the carrier (2) Abutment (12) is provided, each with preferably two axis pieces (10) parallel to the carrier, which pass through an eyelet (13) arranged at the end of the respective bolt (8).

6. Formwork according to claim 5, characterized in that the abutment (12) with the articulated Storage for the strap sections (6) is releasably attached to the carrier (2).

7. Formwork according to one of claims 1 to 6, characterized in that at least the U-transverse web (16) of the carrier (2) with preferably keyhole-like perforations lying one on top of the other (17) for hanging the abutment (12) for the belt sections (6) and additionally for attacking Clamping elements (18) or the like. Are provided.

8. Formwork according to one of claims 1 to 7, characterized in that the abutment (12) for the strap sections the U-crossbar (16) and the adjoining edge area of the U-legs (3) overlaps positively

9. Formwork according to claim 1, characterized in that the legs (3) with the carrier (2) preferably adjustable in length spacers (23) are mutually adjustable and fixable.

The invention relates to a large-area formwork for differently curved surfaces with a relative their curvature adjustable formlining these supporting girders and with the girders at a distance to the formwork skin attacking, formed from individual sections cross straps or the like.

Such a formwork is already known from GB-PS 10 0t 768 Formwork beams fastened squared timbers each on their side facing away from the formlining with a Belt section are connected. These belt sections, which are adjacent to one another, point at their ends Long holes, in the area of which they overlap, and by a clamping screw forming a joint are interspersed. As a result, there is a change in the curvature in both of these elongated holes Directions possible, but with a loosening the clamp connection there is a risk of an automatic adjustment of the curvature. Furthermore must with a change of curvatures with a relatively small radius from the z. B. concave area in the convex area, the formlining can be detached from the formwork girders, as the movement of the through the Clamping screw interconnected belt sections against each other depending on the Dimensions of the elongated holes is very limited.

In contrast, the invention is based on the object of providing a large-area formwork for different to create curved surfaces with a formwork skin adjustable in terms of their curvature, in which without Risk of uncontrolled adjustment of the specified curvature and without breaking down the Formwork in its individual parts, even for components with small radii of curvature, both a convex and a a concave curvature is also adjustable. A large area formwork is required to solve this problem of the type mentioned at the outset, characterized in that the carrier has an approximately U-shaped cross section have, whose U-legs are connected by a transverse web, which is on the from the formwork facing remote side is that the legs of the U-shaped carrier seen in cross section of the U-cross web run obliquely and attack with their free ends each on the formwork that the Legs of the carrier can be moved laterally without permanent deformation and that the on the carrier transversely to these extending and connecting them strap sections in their length between the carriers are changeable.

This makes it possible to adjust the curvature of the formwork facing attached to the girders over a large area can be changed in both directions without the formwork having to be dismantled into its individual parts. the Movability of the legs of the carrier also allows a corresponding curvature directly to the Supports, while rigid supports prevent such a curvature at least in the support area would.

The belt sections or the like can be close to the the outside of the girders facing away from the formlining, possibly on protrusions still protruding there, attack. The larger the lever arm under which the belt sections are adjusted parallel to the The formlining runs, the easier it is to adjust it

It is particularly useful if the strap sections run in their direction of orientation by means of Screw spindles are adjustable in length.