EP3712352A1 - Connection strip for ceiling shuttering - Google Patents

Abstract

Connection strip (2) for ceiling formwork, characterized in that it has a plurality of spaced coupling areas (20, 22) for engagement with prop heads (61, 63) of formwork props (60, 62) along its length. Arrangement of several formwork props (60,62) on which the connection strip (2) rests coupled and a method for erecting and removing at least a partial area of a ceiling formwork.

Description

The invention relates to a connection strip for ceiling formwork.

So far, when coping with such connection tasks, one has mostly worked with individual case solutions or with the more manual closing of the transition area between a first structure and a second structure.

The present invention is based on the object of making connection tasks easier.

This object is achieved by a terminal strip according to claim 1.

This object is also achieved by an arrangement according to claim 7.

Furthermore, the object is achieved by a method according to claim 11.

The object is also achieved by a method according to claim 15.

The connection strip according to the invention for ceiling formwork has several spaced-apart coupling areas for engagement with column heads of formwork columns along its length.

The connection strip according to the invention can be used for ceiling formwork for pouring concrete. But it can also be used for other ceiling formwork, e.g. B. for the temporary undertaking of a ceiling construction for repair work. The connection strip according to the invention can be used to accomplish the connection of a first structure to a second structure during construction work. The first structure can, for. B. be an arrangement of elements of the ceiling formwork, and the second structure can, for. B. be a building wall. Use with other connections is possible, e.g. B. Connection of ceiling formwork to an adjacent horizontal steel beam.

In the connection strip according to the invention, the function of making connections is linked in a novel way with the inclusion of formwork supports assigned to the connection strip.

The connection strip according to the invention can have a plurality of spaced-apart coupling areas for positive engagement with support heads of formwork supports along its length. The form-fitting engagement can be such that it acts in terms of forces essentially in the longitudinal direction of the terminal block; Positive locking with regard to forces acting in other directions can be provided, but does not have to be.

In one embodiment of the invention, the aforementioned, spaced-apart coupling regions include one end coupling region in each of the two longitudinal end regions of the connection strip. The two end coupling areas can, but need not, be the only coupling areas of the terminal block. Thus, when installed, the connection strip spans the distance between a first formwork prop and a second formwork prop.

The respective end coupling area can be designed in such a way that the connection strip in the state coupled to the respective support head either essentially covers only half of the width of the support head - measured in the longitudinal direction of the connection strip - or covers this width of the support head as a whole. The mentioned half-overlap creates an easily practicable possibility of realizing a continuation with a further connection strip in the longitudinal direction of the connection strip. The mentioned full coverage is particularly advantageous if there is no continuation with another connection strip, z. B. because the terminal block is there at the end of a building wall.

In one embodiment of the invention, the connection strip between the two end coupling areas has at least one intermediate coupling area for engagement with the prop head of a formwork prop, wherein the intermediate coupling area can, but does not have to have, a design different from the design of the end coupling areas . In this embodiment, the connection strip interacts with three or more formwork supports. The advantages of this embodiment will become even clearer below in the embodiments.

The terminal block according to the invention, as disclosed in the previous part of the description, can furthermore be characterized in that at least one of the coupling areas has an insertion area for engagement with a receiving area on a support head, or that all coupling areas each have an insertion area for engagement with a receiving area have on a prop head. The "reverse design" is also possible, namely that at least one of the coupling areas has a receiving area for engagement with an insertion area on a support head, or that all coupling areas each have a receiving area for engagement with an insertion area on a support head. The mentioned introduction area / receiving area interventions, which can be designed as form-fitting interventions, but do not have to, can be implemented in a simple manner during the assembly of the connection strip on the column heads of formwork props. The lead-in area-receiving area interventions are very robust. The manufacturing cost of the connection strip and the support heads is also comparatively low.

The terminal block according to the invention, as it has been disclosed in the previous part of the description, can furthermore be characterized in that it has, in cross section, one leg that is horizontal in use and one that is vertical in use; and that at least a part of the coupling regions is positioned laterally on the leg which is vertical in use. This basic shape of the connection strip is a good prerequisite for secure positioning of the connection strip on the formwork supports.

The terminal block according to the invention can have a main body made of metal, in particular made of aluminum including aluminum alloys. The main body can be a metal extrusion to which other parts are attached.

The connection strip according to the invention can be designed in such a way that its upper side is provided as part of the shaping surface of the ceiling formwork. In this case, the connection strip is a functional component of the formlining of the slab formwork in use. The top of the connection strip can be equipped with a formwork skin. This can be achieved in that a formlining strip is attached at the top.

The connection strip according to the invention can have at least one contact area which is provided for contact with a wall, in particular a building wall. As a result of this feature, a connection function of the connection strip on the wall can be achieved particularly well and a particularly reliable positioning of the connection strip relative to the wall can be achieved.

The connection strip according to the invention, as disclosed in the previous part of the description, can also be characterized in that the distances between the coupling areas are such that engagement with column heads of formwork props is possible, which are at the center distance for the width of ceiling formwork panels. The connection strip embodied in this way, through its assembly on the column heads of the respective formwork props, forces the formwork props to be at defined center-to-center distances that correspond to the width of the ceiling formwork panels. As a result, the ceiling formwork panels adjoining the connection strip can be set up in a particularly simple manner.

The connection strip according to the invention, as disclosed in the previous part of the description, can also be characterized in that, when coupled to the respective support head, it essentially covers only half of the width of the support head - measured transversely to the longitudinal direction of the connection strip. This does not rule out that the width measured transversely to its longitudinal extent is greater than half of the mentioned support head width, in which case part of the width of the connection strip protrudes beyond the support head. The so-called "half-coverage" makes it possible to cover the other half of the column head width by the edge area of a shuttering panel or the corner areas of two shuttering panels next to one another.

Another object of the invention is an arrangement which has at least one formwork prop for a ceiling formwork and a connection strip according to the invention coupled to the prop head of the at least one formwork prop, as disclosed in the previous part of the description, characterized in that the connection strip with its underside rests on the support head and one of the end coupling areas of the connection strip is in engagement with a counter-coupling area of the support head. This arrangement can be implemented so that two Formwork supports are provided for a ceiling formwork and the connection strip, in each case with one of its two end coupling areas, is coupled to the two formwork supports in the manner mentioned.

In a further embodiment, at least one further formwork prop can be provided between the said two formwork props, with the underside of the connection strip resting on the prop head of the further formwork prop and an intermediate coupling area of the connection strip engaging a counter-coupling area of the prop head of the further formwork prop.

In the form of the formwork prop (s) terminal strip arrangement, as has been disclosed in the previous part of the description, the design can be such that the two formwork props, which are assigned to the two end coupling areas of the terminal strip, with a stand security, z. B. tripod are equipped, whereas the other formwork prop (s), which is (are) assigned to the or the intermediate coupling area (s) of the terminal block, can be designed without a stand security, but can also be designed with a stand security. The arrangement according to the invention can be implemented in such a way that the connection strip defines the mutual distance between the formwork supports as a result of its positioning on formwork supports, e.g. B. Distance or distances suitable for the width or widths of ceiling formwork panels.

The arrangement as disclosed in the previous part of the description can also have at least one ceiling formwork panel, which rests on the column head of a relevant formwork support assigned to the connection strip at each of its two corner areas, which are adjacent to the connection strip, and engages with it Prop head is. The connection strip thus represents an initial element of a ceiling formwork; it creates a connection of the ceiling formwork to z. B. a wall; it creates a transition between z. B. the wall and ceiling formwork panels. The connection strip can have a height such that its top side and the top side of the at least one ceiling formwork panel are essentially in one plane.

In the case of the formwork support (s) connection strip arrangement, as has been disclosed in the previous part of the description, the design can be such that the connection strip essentially covers only half of the width of the prop head of the at least one formwork prop, measured transversely to the longitudinal direction of the connection strip. This does not rule out that the width of the connection strip measured transversely to its longitudinal extent is greater than half of the mentioned support head width, with part of the width of the connection strip then protruding beyond the support head. The remaining width of the column head can be used for the edge area of a ceiling formwork panel or the corner areas of two adjacent ceiling formwork panels. The upper side of the connection strip and the upper side (s) of this ceiling formwork panel or these ceiling formwork panels adjoin one another and form a partial area of a shaping surface for the concrete.

The formwork props associated with the connection strip provided in the arrangement according to the invention can have prop heads that each have a lowering area on the side facing the at least one adjacent formwork panel, which can be lowered relative to the rest of the prop head in order to lower the two corner areas of the at least one ceiling formwork panel adjacent to the connection strip .

In the arrangement according to the invention, as disclosed in the previous part of the description, the feature “is in engagement” can be designed such that it becomes “in positive engagement”. The feature “in engagement” is thus preferably designed such that a form-fitting engagement is present or is given.

1. (a) Stellen einer ersten Schalungsstütze neben einer Wand;
2. (b) Stellen einer zweiten Schalungsstütze neben der Wand, und zwar im Wesentlichen in demjenigen Mittenabstand, der von den zwei End-Kopplungsbereichen der Anschlussleiste vorgegebenen ist; und
3. (c) Auflegen der Anschlussleiste auf die erste und die zweite Schalungsstütze, wobei jeweils ein End-Kopplungsbereich der Anschlussleiste mit einem Gegen-Kopplungsbereich eines Stützenkopfes der betreffenden Schalungsstütze in Eingriff gebracht wird und wobei die genannten Eingriffe den Mittenabstand zwischen der ersten und der zweiten Schalungsstütze in dem Teilbereich der Deckenschalung definieren.

Another object of the invention is a method for erecting at least a partial area of a ceiling formwork, which has a connection strip as disclosed in the previous part of the description, characterized by the steps:

1. (a) placing a first form support next to a wall;
2. (b) Placing a second formwork prop next to the wall, essentially at that center-to-center distance which is predetermined by the two end coupling areas of the connection strip; and
3. (c) placing the connection strip on the first and the second formwork prop, each end coupling area of the connection strip being brought into engagement with a counter-coupling area of a prop head of the respective formwork prop, and the said interventions reducing the center distance between the first and the second formwork prop Define in the sub-area of the slab formwork.

Here, too, as already mentioned above, it is possible to set up the first and the second formwork prop, each provided with a stabilizer.

This procedure can be followed by the following step:
(d) Placing at least one further formwork prop next to the wall between the first and the second formwork prop, an intermediate coupling area of the connection strip being brought into engagement with a counter-coupling area of a prop head of the at least one further formwork prop, and wherein said engagement affects the positioning of the at least one further formwork prop is defined in the sub-area of the ceiling formwork,
continue. The mentioned interventions thus define the center distances between the formwork supports assigned to the connection strip. These center distances can be coordinated for the width or the widths of ceiling formwork panels, which may also differ from one another.

As a further step, the method according to the invention can:
(e) Attaching a holding element which is effective between the wall and the connection strip and which holds the connection strip against the wall,
exhibit. The retaining element can be designed in such a way that it not only prevents the connection strip from moving away from the wall, but also ensures that the spatial position of the connection strip is maintained, in particular the aligned alignment of the top of the connection strip as part of the - mostly horizontal - shaping surface of the ceiling formwork .

The method according to the invention, as it has been disclosed in the previous part of the description, can be carried out by the further step:
(f) that a ceiling formwork panel or several ceiling formwork panels of a ceiling formwork panel row are each hung with two corner areas on the column heads of two adjacent formwork props assigned to the connection strip, and then swiveled upwards with the two other, non-suspended corner areas and at at least one of these two other corner areas are supported with a formwork prop,
to be continued. The "support of the relevant ceiling formwork panel on these two other corner areas with one formwork prop" can also be carried out in two Steps take place, namely first supporting at one of the two other corner areas with a formwork prop, then hanging and pivoting up the adjacent ceiling formwork panel of the ceiling formwork panel row, and then placing another formwork prop, which the second of the two other corner areas and a first of the two other corner areas of the adjacent slab formwork panel. This process procedure will become even clearer below in the exemplary embodiments.

• (g) ggf. Entfernen des Deckenschalungspaneels oder der Deckenschalungspaneele, das bzw. die der Anschlussleiste benachbart sind;
• (h) ggf. Entfernen der mindestens einen weiteren Schalungsstütze, die der Anschlussleiste zugeordnet ist; und
• (i) Herunternehmen der Anschlussleiste von den Stützenköpfen der ersten und der zweiten Schalungsstütze sowie Entfernen der ersten und der zweiten Schalungsstütze.

Another object of the invention is a method for removing at least a portion of a ceiling formwork, which has a connection strip according to the invention, as it has been disclosed in the previous part of the description, and possibly a ceiling formwork panel or several ceiling formwork panels of a ceiling formwork panel row that or the Terminal strip are adjacent, has,
characterized by the steps:

• (g) if necessary, removing the ceiling formwork panel or panels which are adjacent to the connection strip;
• (h) if necessary, removing the at least one further formwork prop that is assigned to the connection strip; and
• (i) Removing the connection strip from the column heads of the first and second formwork props and removing the first and second formwork props.

The last-mentioned method achieves the advantageous effect that, at the end of the dismantling or stripping of the ceiling formwork, an arrangement of connection strip and a number of formwork supports assigned to the connection strip remains. Due to the stability of at least some of these formwork props, this arrangement remains in place without a person having to stop in any way. Then it can be completely dismantled, even by just one person. There are two options for step (i): First, remove the connection strip from the column heads of the first and second formwork props and then remove the first and second formwork props. Or first removing the first or the second formwork prop, then removing the connection strip from the prop head of the other of these two formwork props, and finally removing the other of the two formwork props.

It is emphasized that the process steps (a) to (f) and (g) to (i) mentioned are not intended to define a mandatory sequence of these steps, although in some of the cases a sequence of steps according to the sequence of steps (a) to ( f) or (g) to (i) - given the technical meaningfulness - makes sense.

So z. B. the connection strip either placed almost simultaneously on the first and the second formwork prop or alternatively the connection strip is first placed on the first formwork prop, then pivoted further up, and then supported with the second formwork prop. The holding element can be attached before or after step (d). Step (i) can be carried out before or after step (h).

Subsequent to the construction of a row of ceiling formwork panels according to step (f), a further row of ceiling formwork panels or several rows of ceiling formwork panels can be built up in a corresponding manner. The same applies in reverse order to the removal of at least part of a ceiling formwork.

The mentioned setting up of formwork props often includes bringing the prop heads to a desired or required height. With the formwork props common in formwork construction, this is often done by means of "spindles", i.e. H. by adjusting the height of part of the formwork support using a nut / threaded spindle drive. Accordingly, when dismantling or removing the formwork props, at least in some cases it is necessary to lower at least that part of the prop head on which one or more ceiling formwork panels or the connection strip rest. At least in part of the cases this can be done by lowering a support section, e.g. B. by means of a nut-threaded spindle drive done. Moving up a part of the formwork prop referred to in this paragraph of the description and moving down a part of the formwork prop referred to in this paragraph will be made clearer below in the exemplary embodiments.

It is emphasized that with the invention it is alternatively possible to begin with the fastening of the connection strip to a wall and then to couple the formwork supports assigned to the connection strip to the connection strip at the positions predetermined by the connection strip. According to another invention As an alternative, the connection strip is first coupled with the two end formwork supports in an assembly situation that does not correspond to the situation described above with upright formwork supports next to a wall. For example, in a situation in which the two end formwork props are on the ground, the connection strip can be coupled to these formwork props. Thereafter, the coupled arrangement is brought into the use position next to a wall, e.g. B. by straightening up from the lying situation.

Fig. 1

eine Anschlussleiste in perspektivischer Darstellung, mit Blick von schräg oben auf die Oberseite der Anschlussleiste;

Fig. 2

die Anschlussleiste von Fig. 1 in perspektivischer Darstellung, mit Blick von schräg unten auf die Anschlussleiste;

Fig. 3

eine erste Seitenansicht der Anschlussleiste von Fig. 1, 2, gesehen in Richtung des Pfeils III in Fig. 1;

Fig. 4

eine zweite Seitenansicht der Anschlussleiste von Fig. 1, 2, gesehen in Richtung des Pfeils IV in Fig. 1;

Fig. 5

die Anschlussleiste von Fig. 1, 2, gesehen in einer Ansicht von unten gemäß Pfeil V in Fig. 1;

Fig. 6

die Anschlussleiste von Fig. 1, 2, gesehen in Richtung auf eine ihrer Stirnseiten gemäß Pfeil VI in Fig. 2;

Fig. 7 bis 12

mehrere, zeitlich aufeinanderfolgende Phasen des Errichtens eines Teilbereichs einer Deckenschalung, jeweils in perspektivischer Darstellung;

Fig. 13

eine Stirnansicht der Anschlussleiste-Schalungsstützen-Anordnung von Fig. 8, gesehen in Richtung des Pfeils XIII in Fig. 8 und in größerem Maßstab;

Fig. 14

einen Ausschnitt aus Fig. 13, gemäß Kreis A und in größerem Maßstab;

Fig. 15

die Anschlussleiste-Schalungsstützen-Anordnung von Fig. 9, in perspektivischer Darstellung, gesehen in Richtung des Pfeils XV in Fig. 13 und in größerem Maßstab;

Fig. 16

die Anschlussleiste-Schalungsstützen-Anordnung von Fig. 9, in perspektivischer Darstellung, gesehen in Richtung des Pfeils XVI in Fig. 13 und in größerem Maßstab;

Fig. 17

einen Ausschnitt von Fig. 16, gemäß Kreis B in größerem Maßstab.

The invention and more specific embodiments of the invention are explained in more detail below with reference to exemplary embodiments shown in the drawings. It shows:

Fig. 1

a connection block in perspective, with a view obliquely from above onto the top of the connection block;

Fig. 2

the terminal block of Fig. 1 in a perspective view, with a view obliquely from below on the connection strip;

Fig. 3

a first side view of the terminal block of Fig. 1, 2 seen in the direction of arrow III in Fig. 1 ;

Fig. 4

a second side view of the terminal block from Fig. 1, 2 , seen in the direction of arrow IV in Fig. 1 ;

Fig. 5

the terminal block of Fig. 1, 2 , seen in a view from below according to arrow V in Fig. 1 ;

Fig. 6

the terminal block of Fig. 1, 2 , seen in the direction of one of its end faces according to arrow VI in Fig. 2 ;

Figures 7 to 12

several successive phases in the construction of a sub-area of a ceiling formwork, each in a perspective view;

Fig. 13

an end view of the terminal strip-formwork support arrangement of Fig. 8 seen in the direction of arrow XIII in Fig. 8 and on a larger scale;

Fig. 14

a section Fig. 13 , according to circle A and on a larger scale;

Fig. 15

the connection strip-formwork prop arrangement of Fig. 9 , in a perspective view, viewed in the direction of the arrow XV in FIG Fig. 13 and on a larger scale;

Fig. 16

the connection strip-formwork prop arrangement of Fig. 9 , in perspective view, viewed in the direction of arrow XVI in Fig. 13 and on a larger scale;

Fig. 17

a section of Fig. 16 , according to circle B on a larger scale.

The ones in the Figs. 1 to 6 Terminal block 2 shown is largely made of aluminum or an aluminum alloy. In this embodiment it has a length of 300 cm. Connection strips 2 with a greater length or with a shorter length are possible; The manufacturer normally offers an assortment of connection strips 2 staggered in length.

The connection strip 2 has - roughly speaking - a T-shaped cross section, as can best be seen in Figs. 1 and 2 each on the front and in Fig. 6 sees. The "T" has a leg 4 that is horizontal when the connection strip 2 is in use and a leg 6 that is vertical when the connection strip 2 is in use. The vertical leg 6 has a wider area for about 1/3 of its height where it adjoins the horizontal leg 4 8 with a width measured transversely to the longitudinal extension of the horizontal limb 4 and the vertical limb 6, which is greater than the width in the lower part of the vertical limb 6. The wider area 8 has, in cross section, the shape of a substantially square hollow profile which has on its upper side a longitudinal, central slot which takes up a large part of the width of the wider area 8. A bar 10 made of wood or plastic is inserted in the longitudinal direction into the cavity of the hollow profile. In this bar 10 screws 12 are screwed from above through the horizontal leg 4 and through the mentioned slot, whereby the horizontal leg 4 is attached to the vertical leg 6. The vertical leg 6 is, apart from the aforementioned strip 10, an extrusion part made of aluminum or an aluminum alloy.

In the angular space between a longitudinal side of the wider area 8 and the underside of the horizontal leg 4, another strip 14 made of wood or plastic is fastened by horizontal screws 16 that go through the hollow profile in the said strip 10. In Fig. 4 one can see that the further bar 14 consists of several sections. The further bar 14 has an approximately square cross section. The side of the further strip 14 pointing away from the wider area 8 is vertically aligned with the adjoining longitudinal side of the horizontal leg 4.

The terminal strip 2 has a total of four coupling areas 20, 22 for positive engagement, each with a coupling area to be described below on a prop head of a formwork prop. Two of the coupling areas are end coupling areas 20, which are each provided in a longitudinal end area of the connection strip 2. The other two coupling regions are intermediate coupling regions 22 which are provided between the two end coupling regions 20 on the connection strip 2. The four coupling areas 20, 22 can be seen in particular in the bottom view of the connection strip 2 in FIG Fig. 5 . The intermediate connection areas 22 can also be seen clearly in FIG Figs. 1 and 2 . In Fig. 2 one can see the lower end regions 24 of the end coupling regions 20, which lower end regions 24 protrude downward beyond the lower end of the vertical leg 6 and are somewhat beveled on two sides. The two end coupling areas 20 and their downwardly projecting end areas 24 can also be seen clearly in FIG Figures 4 and 6 . The two intermediate coupling areas 22 can be seen clearly in FIG Fig. 1, 2 , 3, 6 .

Each of the coupling areas 20 and 22 represents an insertion area which is received in a receiving area of the respective column head when the connection strip 2 is assembled with prop heads of formwork props to be described further below.

Each of the coupling areas 20 and 22 is subdivided - in the illustrated embodiment - into two pins 21 and 23 which are vertical in use and which are spaced apart in the longitudinal direction of the connection strip 2. In the illustrated embodiment, the two pins 21 of the end coupling area 20 in question are a common component made of metal, which is laterally attached to the vertical

Leg 6 of the terminal block 2 z. B. is fixed by screws. In the illustrated embodiment, the two pins 23 of the relevant intermediate coupling area 22 are each a separate component made of metal, which is attached to the side of the vertical leg 6 of the terminal block 2 z. B. is fixed by screws. The pins 21 and 23 each have - in horizontal cross section - essentially the shape of a hollow square with an attached fastening area for fastening to the connection strip 2. The pin components can be made from bent sheet metal, in particular sheet steel.

The pegs 21 of the end coupling areas 20 are located on one of the two longitudinal sides of the vertical leg 6, whereas the intermediate coupling areas 22 are located on the opposite side of the vertical leg 6.

Furthermore, in the exemplary embodiment shown, there are three positioning areas 26 along the length of the connection strip 2. Each of the positioning areas 26 is divided into two, spaced apart in the longitudinal direction of the connection strip 2, vertical pins 27 when the connection strip 2 is in use. The two pins 27 of each positioning area are closed summarized a common component, which in the illustrated embodiment made of bent sheet metal, in particular sheet steel, and on the same side as the end coupling areas laterally on the vertical leg 6 of the terminal block 2 z. B. is fixed by screws. The pins 27 each have - in horizontal cross section - essentially the shape of a hollow trapezoid.

The pins 23 and 27 do not protrude beyond the lower end of the vertical leg 6 downwards. The pins 21, 23, 27 are not free all around, but are each positioned close to the vertical leg 6 on one side, as can be seen clearly in the drawings.

The distance between the in Fig. 5 the left end of the connection strip 2 and the center 30 of the next intermediate coupling area 22 is 1 m. There is the same distance between the centers 30 of the two intermediate coupling areas. Again the same distance is between the center of the in Fig. 5 right intermediate coupling area 22 and the in Fig. 5 right end of the connection strip 2. The respective distance between the center 28 of an end coupling area 20 and the center 30 of the adjacent intermediate coupling area is slightly shorter than 1 m. The positioning areas 26 are each located approximately in the middle between two adjacent coupling areas 20 and 22, respectively.

The Figures 7 to 12 show - by means of a graphic representation of several consecutive construction phases - how a connection strip 2 is constructed and then a number of ceiling formwork panels 40 is constructed.

It should be noted that the Figures 7 to 17 Drawn terminal block 2 is designed differently in some details than that in the Figs. 1 to 6 Terminal strip 2. This applies in particular to the fact that the in Figures 7 to 17 The connection block 2 shown in the drawing, the vertical leg 6 of the connection block 2 is made of wood instead of metal, and that pieces of wood 32 or pieces of plastic 32 are provided instead of the positioning areas 26 (see FIG Fig. 15 ). Still lead the Figures 7 to 17 well in sight, as well as the in Figs. 1 to 6 Drawn terminal block 2 can be used.

In the Figures 7 to 12 a corner of a room is shown schematically, wherein one sees a floor 50 (= e.g. ceiling of a room below), a first wall 52 and a second wall 54 running at right angles thereto. The two walls 52 and 54 together form a corner of the room.

In the in Fig. 7 In the first phase shown in the drawing, a first formwork prop 60 has been set up just next to the second wall 54 and a second formwork prop 62 just next to the second wall 54. The first formwork prop 60 is also just next to the first wall 52, thus, so to speak, close to the corner of the room. Each of the two formwork props 60 and 62 is equipped with a stand security 64 in the form of an adjustable tripod, so that the formwork props 60 and 62 stand vertically without being held. The center-to-center spacing of the formwork props 60 and 62 (ie horizontal spacing between the vertical central axes of the formwork props 60 and 62) is slightly less than 3 m1 in the illustrated embodiment. It goes without saying that in the case of a connection strip 2 of a different length, the formwork supports 60 and 62 must be set up at a correspondingly larger or smaller distance. In order to set up the formwork props 60 and 62 at the correct spacing, the connection strip 2 can be placed on the floor as a measure, but you can also proceed differently.

In the following, for the sake of brevity, only “support” will be used instead of “formwork support”.

Fig. 7 further illustrates how the connection strip 2 can be placed on the previously provided supports 60 and 62 by just one person (other types of placement of the connection strip 2 being possible). The connection strip 2 is initially placed in a slightly inclined position on a support head 61 of the first support 60 from above. Then a formwork aid 66 (ie a rod the length of which is a little less than the height of the designated space) is gripped under the connection strip 2, namely at a point that is usefully not very far from the one in Fig. 7 right end of the connection strip 2 is removed. By means of the shuttering aid 66, the working person can lift this right-hand end of the connection strip 2 slightly higher than a support head 63 of the second support 62 and then set it down onto the support head 63 from above, see FIG Fig. 8 drawn, second phase.

The described placing of the connection strip 2 on the support heads 61 and 63 takes place in such a way that the in Fig. 7 The left end coupling area 20 of the terminal block 2 comes into positive engagement with a receiving area 70 of the first support 60 (see also in particular Fig. 14 ) and that the in Fig. 7 The right end coupling area 20 of the connection strip comes into positive engagement with a receiving area 70 on the support head 63 of the second support 62 (see in particular also FIG Fig. 14 ).

The ones in the Figures 7 to 17 The supports 60, 62, etc. shown each have a positioning extension 72 projecting upwards in the center of the support head 61, 63, etc., see in particular Fig. 14 and 17th . As can be seen particularly clearly in Figures 13 and 14 sees, the terminal block 2 is sunk with its vertical leg 6 into the space between the second wall 54 and the positioning extensions 72 of the support heads 61 and 63 such that the positioning areas 26 of the terminal block 2 with their side 29 facing away from the vertical leg 6 against the second wall 54 abut. When the in Fig. 7 On the left end coupling area 20 of the connection strip 2 with the receiving area 70 of the support head 61, the two pins 21 of this end coupling area 20 each come into a receiving space between two essentially vertical jaws 74 of the support head 61 Fig. 15 top right. You also have to imagine that the four jaws 76 that can be found in Fig. 17 sees, are also essentially mirror-inverted on the other side of the support head 61, that is, behind the positioning extension 72 and behind the vertical leg 6 of the connection strip 2 that covers the jaws 74. As a result of the engagement of the two pins 21 in the two receiving spaces described, a form-fitting engagement is created there between the connection strip 2 and the support head 61 with regard to forces that act in the longitudinal direction of the connection strip 2.

Especially in Fig. 15 you can see that the connection strip 2 at the right end there (= left end in Figures 7 to 12 ) the receiving area of the support head 61 with the four described jaws 74 protrudes a bit in the direction of the length of the connection strip 2. As a result, the terminal strip 2 can be erected with the front end there against the first wall 52. The connection strip 2 covers the entire width of the first support head 61, measured in the longitudinal direction of the connection strip 2.

In the case of the second support head 63 of the second support 62, of the end coupling area 20 of the connection strip 2 there, only the pin 21 which is closer to the front end of the connection strip 2 is used for engagement with a receiving area 70 of the second support head 63. Only the space between two jaws 74 of the prop head 63 is used for this engagement. The space between the two further jaws 74 on the side of the second support 62 facing the second wall 54 remains free (initially). The connection strip 2 covers only half of the width of the support head 63 measured in the longitudinal direction of the connection strip 2.But even when only half the width of the support head is used, a form-fitting engagement between connection strip 2 and support head 63 is created with regard to forces in the longitudinal direction of the connection strip 2.

After the connection block 2 has been set down or placed on the support heads 61 and 63, the lower end of the vertical leg 6 of the connection block 2 rests on support surfaces 78 of the support heads 61 and 63, see FIG Fig. 14 . The pegs 21 of the end coupling areas 20 protrude further downwards than the level of the support surfaces 78, which makes it easier to "thread" the end areas 24 of the pegs 21 into the space between two jaws 74. In the direction of double arrow A in Fig. 14 , ie transversely to the longitudinal extension of the connection strip 2, the vertical leg 6 of the connection strip 2 is locked between the positioning extension 72 and the surface of the second wall 54 facing the room. This definition ensures that the vertical limb 6 is aligned vertically overall and that the top of the horizontal limb 4 of the connection strip 2 lies in a horizontal plane. Since the connecting strip 2 rests against the second wall 54 with its longitudinal edge or a longitudinal edge of the further strip 14 attached to it, the passage of liquid concrete between the second wall 54 and the connecting strip 2 is very tight.

It is particularly evident in Figures 13 and 14 It can be seen that the terminal block 2, more specifically its horizontal leg 4, essentially only covers half the width of the relevant support head 61, 63, 81 - measured transversely to the longitudinal extension of the terminal block 2, so that the other half of this width is covered by an edge region a laid ceiling formwork panel 40 or by two corner areas 90 and 92 of two ceiling formwork panels 40 laid next to one another can be covered. The upper sides of the connection strip 2 and the mentioned ceiling formwork panels 40 lie in a common plane and together form part of a shaping surface for concrete directly adjacent to one another.

It can be seen that the first support 60 and the second support 62, as usual with formwork supports, are equipped with an adjustment option for the height position of the support heads 61 and 63, in the illustrated embodiment by means of an external thread on the upper end area of a lower support section 85, and one with it internally threaded sleeve 82 located in threaded engagement, the upper end face of which acts on a bolt 84 which passes through one of several horizontal bores in an upper support section 86. What is described is particularly good in Fig. 7 , 15th and 16 to see. The execution of a height adjustment of the respective support head 61 or 63 by turning the internally threaded sleeve 82 is called "spindles".

Before continuing with the erection of at least part of a slab formwork, the supports 60 and 62 are spindled in such a way that the top of the horizontal leg 4 of the connection strip 2 has the desired height (= height of the underside of the slab to be poured) and is overall horizontally between the two supports 60 and 62 extends.

In the in Fig. 9 The third phase shown in the drawing, two additional supports 80 have been placed between the two supports 60 and 62. The other supports 80 are constructed in the same way like the supports 60 and 62, but without the stand security 64. In each of the two further supports 80, the support head 81 has been brought into positive engagement with a receiving area 83 with one of the two intermediate coupling areas 22. This engagement is best seen in Figures 16 and 17 . The receiving area 83 used for this intervention is - in the viewing direction of FIG Fig. 17 - Bounded on the left and right by a jaw 85 protruding upwards and, with the exception of its foot area, sloping away to the outside. In the space between the two jaws 85 there is also the positioning extension 72, but the relevant part of its height between the two pins 23 Has space. The two pegs 23 each fit with their outer side 87, which points towards a front end of the connection strip 2, precisely between the foot regions of the two jaws 85, which creates the aforementioned, form-fitting engagement. The pins 23 do not protrude below the vertical leg 6 of the connection strip 2. It can thus be seen that the receiving area 83 of the relevant further support 80 for the intermediate coupling area 22 of the terminal strip 2 designed as an insertion area is a differently designed receiving area than the receiving area 70 described above for the end coupling area 20 of the connecting strip designed as an insertion area 2.

As a result of the engagement of the support head 81 of each of the two further supports 80 with an intermediate coupling area 22, the two further supports 80 are inevitably at a center distance of 1 m between them and the in Fig. 9 right, further support 80 necessarily at a center distance of 1 m to the support 62. Between the support 60 and the in Fig. 9 On the left, further support 80, the center-to-center distance is somewhat smaller than 1 m (because the connection strip 2 completely covers the width of the support head 61 measured in the longitudinal direction of the connection strip 2). The engagement of the coupling areas 20 and 22 of the terminal block 2 with the four support heads 61, 63, 81, 81 of the four supports 60, 62, 80, 80 assigned to the terminal block 2 enforce or define that the supports are all in the described Center distances. The further supports 80 can each be set up by one person working alone. The other supports 80 are spindled to the correct height.

In Fig. 9 it can also be seen that a holding element 86 has been attached to the second wall 54. The holding element 86 has the shape of a substantially vertically extending rail. At its upper end, the holding element 86 has a lug 88 which is displaceable in the longitudinal direction of the holding element 86 and which, in the extended direction, is State goes against the side face of the vertical leg 6 of the terminal block 2 facing away from the second wall 54 (see in particular Fig. 16 ). In this way, the holding element 86 holds the connection strip 2 against the second wall 54.

In the in Fig. 10 In the fourth phase shown in the drawing, a ceiling formwork panel 40 with two corner areas 90 and 92 is hung on the prop head 61 of the first prop 60 and on the prop head 81 of the further prop 80 adjacent thereto. How to particularly work in Fig. 14 sees, the four jaws 76, which are present on the side of the respective support head 61 or 81 facing away from the second wall 54, have partial areas that protrude upwards above the level of the support surface 78, and also have points pointing towards the terminal block 2 , small noses 90 each at the top. The corner areas 90 and 92 of the ceiling formwork panel 40 can thus each be suspended in the space between the positioning extension 72 and the upwardly projecting areas of the jaws 76. The corner area 90 occupies the entire width of the prop head 61 - measured in the longitudinal direction of the connection strip 2 - and the corner area 92 only occupies half the width of the prop head 81 - also measured. The suspended ceiling formwork panel 40 initially hangs downward.

In the in Fig. 11 Drawn, fifth phase, the ceiling formwork panel 40 with its two other corner areas 94 and 96 is pivoted upwards, with the help of a formwork aid 66. Such a formwork aid 66 is already in connection with Fig. 7 has been described. In Fig. 11 one can see, however, more clearly that the rod-like shuttering aid 66 telescopically consists of two sections which can be displaced relative to one another, so that the effective length of the shuttering aid 66 can be adjusted. By means of the shuttering aid 66, a working person can pivot the ceiling shuttering panel 40 into an essentially overall horizontal position or beyond it upward. A further support 80 is then positioned at the corner region 94 adjacent to the first wall 52 (as shown in the result in the sixth phase of FIG Fig. 12 ). The prop head 81 of this further prop 80 is designed like the previously described prop heads 61, 63, 81, 81, so that a form-fitting engagement between the corner area 94 and the prop head 81 of the further prop 80 placed last is possible.

In Fig. 11 one can also see that two further ceiling formwork panels 40 have been suspended from the column heads 81 and 63 of the two further columns 80 and the second column 62, respectively with the two corner areas 90 and 92. In the in Fig. 12 In the sixth phase shown in the drawing, the second formwork panel 40 has been pivoted upwards and a further joint support 80 has been brought into position for the corner area 96 of the first formwork panel 40 and for the corner area 94 of the second formwork panel 40. It goes without saying that the further supports 80 of the second column row, which is a little more than a formwork panel length away from the second wall 54, are spindled so that the formwork panels 40 of this first formwork panel row are all overall horizontal.

The in Fig. 12 The visible partial area of a ceiling formwork, which contains four supports 60, 62, 80, 80 next to the second wall 54 and a second row of columns 98 spaced from the second wall 54 in the described manner, and three ceiling formwork panels 40, can continue in the longitudinal direction of the second wall 54 be extended. For this purpose, a support with stability is placed next to the second wall 54, essentially at a distance of the length of a further connection strip 2. Then the further connection strip 2, in alignment with the connection strip 2 described so far, is placed on two supports in the manner described. The first row of ceiling formwork panels 40 can then be built up further along the second wall 54.

The sub-area of the ceiling formwork containing a first row of ceiling formwork panels 40 can also be further built with a second, third, etc. row of ceiling formwork panels 40. For this purpose, the ceiling formwork panels 40 are hooked into the nozzle heads 81 of the second row of supports 80 in the manner described, pivoted upwards and supported with supports 80 at the upwardly pivoted corner areas. In this way you can continue working until the entire slab formwork is completed, if necessary with the help of fitting pieces.

It is emphasized again at this point that the described length of the connection strip 2 and the described number of coupling regions 20 and 22 of the connection strip 2 are an exemplary embodiment. According to the invention, longer or shorter connection strips 2 are also provided. The number of coupling areas 20 and 22 depends on which ceiling formwork panel widths and for how many Ceiling formwork panels 40, the connection strip 2 is designed. Terminal strips 2 are also possible which have only two end coupling areas 20 and no intermediate coupling area 22, that is to say are designed only for a single ceiling formwork panel width. It is also possible to design connection strips 2 in such a way that the coupling areas have different distances from one another, so that ceiling formwork panels 40 of different widths are connected to one and the same connection strip 2.

When removing or stripping a partial area of a ceiling formwork, the procedure is reversed to that which has been described so far for the construction of the partial area of the ceiling formwork. Only the dismantling or removal of the first row of ceiling formwork panels which adjoins the connection strip 2 is described in more detail here. For this purpose, it is first described that the prop heads 61, 63, 81, 81 of the mentioned props 60, 62, 80, 80 each have a lowering area 92, as can be seen in particular in FIG Fig. 14 sees. The four jaws 76 with the four lugs 90, together with a portion of the support surface 78, can be adjusted, for. B. pivot 30 ° down after a wedge plate 95 has been moved into a pivoting lowering releasing position. As a result, the edge beam, which is assigned to the two corner areas 90 and 92 of the relevant ceiling formwork panel 40, comes to a lower position. The relevant ceiling formwork panel 40 can be pivoted downwards with its two corner areas 94 and 96 without an edge area of the formwork skin of the ceiling formwork panel 40 adjacent to the connection strip 2 digging into the concrete of the poured ceiling from below.

Only the removal of the in Fig. 11 far left ceiling formwork panel 40 of the first ceiling formwork panel row, which connects to the connection strip 2, described in more detail. The ceiling formwork panels 40 of the further ceiling formwork panel rows and the second ceiling formwork panel 40 as well as the third ceiling formwork panel 40 of the first ceiling formwork panel row have been removed beforehand in a corresponding manner.

In addition to the corner areas 94 and 96, a little further away from the connection strip 2 than the corner areas 94 and 96, replacement supports (not shown) have been placed which support the cast ceiling there. The replacement supports are supports with support heads that are much more simply constructed than those described so far Prop heads 61, 63, 81; these simpler prop heads go directly from below against the cast ceiling and support it there. Therefore, the prop heads 81 of the props 80, which prop heads 81 support the corner regions 94 and 96, can be screwed down a little. A formwork aid 66 is attached. The lowering areas 92 of the support heads 61 and 80, which are in engagement with the corner areas 90 and 92, are pivotably lowered by releasing the wedge plate 95. The ceiling formwork panel 40 can now be pivoted downward with its corner areas 94 and 96 with the aid of the formwork aid 66. The corner areas 90 and 92 are then unhooked from the column heads 61 and 81, and the ceiling formwork panel 40 is removed.

Then, next to the supports 60, 62, 80, 80 of the first row of supports, at a slightly greater distance from the second wall 54 than these supports, replacement supports are placed and screwed upwards against the cast ceiling. In many cases there is no need for replacement supports because the cast ceiling is adequately supported there by the second wall.

First the further supports 80 are removed. For this, their prop heads 81 are screwed down a little. Then the further supports 80 can be conveniently removed. The retaining element 86 is removed. Now the arrangement of the end supports 60 and 62 and the terminal strip 2 stands for itself, and one can easily proceed to the removal of these parts. The prop heads 61 and 63 are screwed down a little. With the help of a shuttering aid 66, the connection strip 2 is removed in the opposite way to that described for erection.

The described removal of a part of the slab formwork took place as a so-called early stripping. This is understood to mean the stripping of a poured concrete ceiling a few days after the concrete has been poured, long before it has reached its final strength through complete setting. One after the other, all of the described supports with the elaborate support heads are replaced by replacement supports with simple support heads that go directly against the concrete ceiling from below, and can then be removed support by support.

It is expressly emphasized that the described combination of the connection strip 2 and the ceiling formwork panels 40 with supports 60, 62, 80, which are elaborately designed Support heads 61, 63, 81 are only one of several possibilities. The connection strip 2 according to the invention can be combined with many types of column heads, also with other types of ceiling shuttering panels. There are types of early stripping in which the formwork used for erecting the ceiling, e.g. B. stand equipped with drop head supports and the ceiling formwork panels are removed from these supports. The connection strip 2 according to the invention can also be used in this environment. The connection strip 2 according to the invention can also be used for ceiling formwork in which one does not want to work with early stripping.

Claims (15)

Connection strip (2) for ceiling formwork,
characterized in that it has a plurality of spaced-apart coupling areas (20, 22) for engagement with prop heads (61, 63) of formwork props (60, 62) along its length. Terminal block (2) according to claim 1,
characterized in that in each of its two longitudinal end areas it has an end coupling area (20, 22) for engagement with the prop head (61, 63) of a formwork prop (60, 62). Terminal block (2) according to claim 2,
characterized in that between the two end coupling areas (20) it has at least one intermediate coupling area (22) for engagement with the prop head (61, 63) of a formwork prop (60, 62). Terminal strip (2) according to one of Claims 1 to 3,
characterized in that at least one of the coupling areas (20, 22) has a receiving area (70) for engagement with an insertion area on the relevant support head (61, 63), or all coupling areas (20, 22) each have a receiving area (70) for engagement with an insertion area on the relevant support head (61, 63). Terminal strip (2) according to one of Claims 1 to 4,
characterized in that it has, in cross section, a leg (4) which is horizontal in use and a leg (6) which is vertical in use; and that at least a part of the coupling regions (20, 22) is positioned laterally on the leg (6) which is vertical in use. Terminal strip (2) according to one of Claims 1 to 5,
characterized in that its top is provided as part of the shaping surface of the ceiling formwork. Arrangement which has at least one formwork prop (60,62) for a ceiling formwork and a connection strip (2) according to one of Claims 1 to 6 coupled to the prop head (61,63) of the at least one formwork prop,
characterized in that the bottom of the connection strip (2) rests on the support head and one of the end coupling areas (20) of the connection strip (2) engages with a counter-coupling area of the support head (61, 63). Arrangement according to claim 7,
characterized in that two formwork props (60,62) are provided for a ceiling formwork and the connection strip (2) is coupled in the aforementioned manner to the two formwork props (60,62);
and that at least one further formwork prop (60,62) is provided between said two formwork props (60,62), with the bottom of the connecting strip (2) resting on the prop head (61,63) of the further formwork prop and an intermediate coupling area the connection strip (2) is in engagement with a counter-coupling area of the prop head (61, 63) of the further formwork prop (60, 62). Arrangement according to one of Claims 7 to 8,
characterized in that it also has at least one ceiling formwork panel (40) which, at each of its two corner areas, which are adjacent to the connection strip (2), is placed on the support head (61, 63) of a respective formwork support (60 , 62) rests and is in engagement with this support head (61,63). Arrangement according to one of Claims 7 to 9,
characterized in that the prop heads (61,63) of the formwork props (60,62) assigned to the connection strip each have a lowering area on the side facing the at least one ceiling formwork panel (40) which can be lowered relative to the rest of the prop head (61,63) for lowering the two corner areas of the at least one ceiling formwork panel (40) adjacent to the connection strip (2). Method for erecting at least a partial area of a ceiling formwork which has a connection strip according to one of Claims 1 to 6, characterized by the steps: (a) placing a first form support (60) next to a wall (52); (b) placing a second formwork prop (62) next to the wall (54), namely essentially at that center-to-center distance which is predetermined by the two end coupling areas (20) of the connection strip (2); and (C) placing the connection strip (2) on the first and the second formwork prop (60,62), with an end coupling area (20) of the connection strip (2) with a counter-coupling area of a prop head (61,63) of the respective Formwork prop (60,62) is brought into engagement and wherein said interventions define the center-to-center distance between the first and the second formwork prop (60,62) in the partial area of the ceiling formwork. Method according to claim 11, characterized by the further step:
(d) Placing at least one further formwork prop next to the wall between the first and the second formwork prop, wherein an intermediate coupling area of the connection strip (2) is brought into engagement with a counter-coupling area of a prop head of the at least one further formwork prop, and said engagement defines the positioning of the at least one further formwork prop in the sub-area of the ceiling formwork. Method according to claim 11 or 12, characterized by the further step:
(e) Attaching a holding element which is effective between the wall and the connection strip (2) and which holds the connection strip against the wall. Method according to one of Claims 11 to 13, characterized by the further step:
(f) that a ceiling formwork panel (40) or several ceiling formwork panels (40) of a ceiling formwork panel row are suspended with two corner areas on the column heads of two adjacent formwork props assigned to the connection strip (2), and then with the two other, non-suspended corner areas pivoted upwards and supported on at least one of these two other corner areas with a formwork prop. Method for removing at least a partial area of a ceiling formwork, which has a connection strip (2) according to one of Claims 1 to 6 and, if necessary, a ceiling formwork panel (40) or several ceiling formwork panels (40) of a ceiling formwork panel row, that or those of the connection strip (2) are adjacent, characterized by the steps: (g) if necessary, removing the ceiling formwork panel (40) or the ceiling formwork panels (40) which is or are adjacent to the connection strip (2); (h) if necessary, removing the at least one further formwork prop which is assigned to the connection strip (2); and (i) Removing the connection strip (2) from the column heads of the first and second formwork props and removing the first and second formwork props.

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