DE102012205470A1 - Permanent formwork for use in concreting of e.g. foundation in building construction, has anchor device holding two scarf plates, where spacing element and/or connectors of anchor device pass through recess formed in scarf plates - Google Patents

Abstract

The formwork (01) has an anchor device (11) holding two scarf plates (03a, 03b) at predetermined distance and in a defined alignment with each other. The anchor device forms a space between the plates, where the space is filled with concrete. The anchor device comprises a spacing element (12) that is arranged between the plates, and two connectors (17) are arranged on two outer sides of the formwork and connected with the plates. The spacing element and/or the connectors pass through a recess (7) formed in the plates. The plates are made of heat insulating material.

Description

The invention relates to a permanent formwork for use in concreting, in particular foundations or the like, according to the preamble of claim 1.

Formwork for concreting are known in many ways from the prior art. In the present case, that formwork construction is considered in which the formwork elements remain on the concreted component after concreting. In this case, two heat-insulating shuttering panels are used, which are connected by means of connecting means in the distance which corresponds to the later concrete component. An example of such a formwork discloses the document DE 195 23 069 A1 , Here, the shell element on a left and a right made of a thermally insulating material formwork panel. These essentially rectangular formwork panels are each provided with perforated strips at the upper edge and at the lower edge. Here, the perforated strips are glued to the formwork panel in a groove. The perforated strip in this case has a plurality of openings, within which a mounting bracket can be hung. By using a plurality of mounting brackets in two levels in attachment to opposite perforated strips a reliable connection between the shell elements is ensured.

A disadvantage of such embodiments of the prior art, however, is in particular the problem that prior to an exact alignment of the two formwork panels at the point of use they have no positionally accurate assignment to each other. Consequently, it requires the conformation of the two formwork panels before concreting. Although the transport volume is advantageous due to the collapsibility of the formwork panels or the dismantling, however, the required effort to install the formwork panels at the point of use is particularly disadvantageous.

To solve again embodiments are known in which the two formwork panels are connected on the lower side continuously by means of a bottom plate. As a result, the system of the shuttering plates and the lower connecting floor plate and the connecting brackets is stabilized and it requires at the place of use no further alignment of the two shuttering panels to each other.

Although in contrast to the aforementioned embodiment in the connected by bottom plate execution of the installation effort is reduced, however, the usability is limited. In particular, due to the continuous bottom plate no flow of the filled concrete in the production of corresponding concrete components, but this is often desired.

Object of the present invention is therefore to provide a formwork element available which is ready to use at the point of use without major expenses and this allows continuous concreting up and down.

The present object is achieved by an embodiment according to the invention according to claim 1.

Advantageous embodiments are the subject of the dependent claims.

A generic permanent formwork is used for concreting. This may be the concreting of foundations, ring anchors or other concrete components, especially in building construction act. It is basically provided that the formwork remains after concreting the corresponding component in this. For this purpose, the lost formwork has at least one first and at least one second formwork panel. These are arranged at a distance, wherein the distance can be selected based on the strength of the component to be concreted.

To allow the concreting while maintaining the required geometry, taking into account the occurring during concreting hydraulic pressure against the formwork panels, the lost formwork on a plurality of anchor devices, which are claimed during concreting by a tensile load. Here, the lost formwork can allow the concreting of low-height components without additional interventions. If the component to be concreted has a greater overall height, it may also be necessary, as in the prior art, for an additional stabilization on the outside, or for soil, to be carried out.

Furthermore, it requires means which hold the two formwork panels in the predetermined distance and in a defined orientation to each other, whereby between the two formwork panels a space filled with concrete space is formed.

At first it is irrelevant whether the two formwork panels can be positioned in relation to each other during installation at the place of use or can already be installed in a pre-assembled position, ie. H. with installation of the lost formwork this can be used directly for the production of corresponding concrete components.

To enable the universal applicability of the lost formwork, in particular for continuous concreting on all sides, according to the invention now the anchor device is designed such that it has at least one spacer element and at least two connecting elements. Here, the spacer element is arranged substantially between the two shuttering plates, wherein the connection elements are arranged on the outer side of the formwork on the shuttering plates and in this case are connected to the spacer element. It thus takes place at the same time a connection of the shuttering panels with the anchor device. For this purpose, it is necessary for the spacing element and / or a connection element and / or both connection elements to essentially pass through the formwork panels in a recess. Due to the attachment of the connection element from the outside of the formwork panel in conjunction with the spacer element located between the formwork panels, it is obvious that a penetration through the formwork panel is required in order to allow a corresponding connection between the spacer element and the connection element.

The newly created embodiment makes it possible in a particularly simple manner to realize a defined association between the two formwork panels. Ie. the alignment of the shuttering panels to each other and a defined distance between the shuttering panels are particularly simplified by application of the anchor device according to the invention and carried out in the most favorable case automatically by the attachment of the anchor device. Furthermore, a tensile force transmitting connection between the two formwork panels is particularly easily realized by means of connection of the spacer element with the connection elements, whereby the tensile forces occurring due to the hydraulic pressure can be absorbed. Decisive advantage over alternative embodiments of the prior art is the particularly cost-effective design of the corresponding anchor device made possible by this, in particular since it requires no significant special properties in the formwork panels, d. H. it is only a recess in the formwork panel required. Likewise, the connection elements and the spacer can be made particularly inexpensive.

In a preferred embodiment, at least one form panel is made of a thermally insulating material. Particularly advantageous in the case of foundations is the design on both sides as a heat-insulating material. Here, the lost formwork can serve as a component of the building insulation remaining on the concrete element at the same time.

Various embodiments are available for realizing the connection of the connection element to the spacer element. In an advantageous variant, the connection element has a connection recess and the spacer element has a connection projection at least at one end. Here, the connection recess with the connection projection force and / or form-fitting connectable. In this respect, by inserting the connecting projection into the connecting recess, a connection is made between the connecting element and the spacer element.

Alternatively, the spacer on another side, d. H. at the other formwork panel, or alternatively at both ends have a connection recess, while on the other hand, the associated connection element comprises a connection projection. Again, the connection recess with the connection projection force and / or form-fitting connectable. In this respect, as in the previous embodiment variant, the connection between the connection projection is made by insertion into the connection recess.

In order to increase the flexibility with regard to the design of the anchoring device using a reduced number of components, it is particularly advantageous if the spacing element has a connection recess on one side and a connection projection on the other side. This makes it possible to connect two spacer elements to increase the distance of the shutter plates together, wherein the connecting projection of the first spacer element is introduced into the connecting recess of the subsequent spacer element accordingly.

In this regard, it is possible to make all existing spacers each at one end with a connecting recess and at the other end with a connecting projection. Thus, it is necessary for connection to the spacer element of a first connection element with connection projection and a second connection element with the connection recess. A particular advantage with this embodiment is that different distances between the shutter plates with a limited number or with a single embodiment of a spacer element can be realized.

Furthermore, however, it is also possible to provide a first spacer element on both sides both with a connection projection or alternatively with a connection recess. This usually symmetrical first spacer can now be supplemented with an extension element, wherein the extension element is also designed as a second spacer element, but now at one end a Connecting recess and at the other end has a connection projection. In this respect, the use of identical connection elements is still guaranteed on both sides of the formwork panels.

In what way the connecting recess or the connecting projection is executed, is initially irrelevant. It is essential, at least, that the connection is made in such a way that a tensile force can be transmitted via the connection.

In a first advantageous embodiment, it is possible to connect the connection projection with the connection recess by means of a latching function. For this purpose, the connecting projection on at least one grid increase, wherein a complementary recess in the connecting recess is present. By inserting the connecting projection into the connecting recess, the grid elevation of the connecting projection engages in the latching recess of the connecting recess and can effectively prevent disassembly. In particular, in this embodiment, the connecting projection and the connecting recess when viewing the cross section can be designed in a variety of geometries, as a rotating example, rotating screwing is not provided. Although the relevant solution requires a material thickness of the formwork panel in smaller tolerances to ensure the same position of the connecting projection relative to the connecting recess, nevertheless, a particularly inexpensive and reliable connection can be created.

If a release is not readily ruled out in the occurring tensile forces within the compound, it is also advantageously possible to use a locking means. For this purpose, the connection projection below the grid elevation has a free space (compare the core recess in the embodiment as a spreading element). By inserting the locking means in the free space a corresponding springback of the grid increase is prevented. Particularly advantageous in this regard is a symmetrical design, so that the locking means locks at the same time two opposite increments against a return springs.

In a further preferred embodiment, the connection recess has an internal thread and / or the connection projection an external thread for connection. In this respect, the connection projection can be screwed into the connection recess. This embodiment is particularly suitable for transmitting higher tensile forces, wherein furthermore the depth of engagement of the connecting projection can be kept variable in the connecting recess. In this embodiment, it is particularly advantageous if the connection element has a tool holder which corresponds to a standardized, commonly used design. In this respect, it is conceivable, for example, to provide a large-format recess in the form of a cross-slot in the connecting element.

In order to avoid costly components to be produced specifically for the anchor device, in particular tools for this purpose, it is particularly advantageous if initially a standardized screw is used for the screw connection. For this purpose, a connection plate can be used in an advantageous manner in order to achieve a large-scale contact with the outside of the formwork panel.

Furthermore, it is particularly advantageous for reducing specific components if a profile bar is used as the essential component for the spacer element. A screw connection can advantageously be made particularly cost-effective by using a spreading element. This is inserted for this purpose at the end in a bore of the profile bar. If a larger contact surface on the formwork panel to reduce the surface pressure and to stabilize at cross-loads - for example, by the handling - is required, an investment plate can be used in an advantageous manner. This can in this case be held by a collar of the expansion element and thus can be realized by a simple combination of standardized and / or inexpensive simple components, a spacer. In this embodiment, now the core recess of the expansion element forms the connection recess for connection to the connection element by a screwing operation. Obviously, the cross-section of the core recess after insertion of the expansion element into the bore of the profile bar must be smaller than the external diameter of the thread of the screw used in the connection element.

To avoid the corresponding assembly work, the connecting projection is designed as a spreading element in a preferred embodiment. Through the use of a spreading element, it is no longer necessary to screw the connection projection by means of thread in the connection recess. It is irrelevant in this case whether the connection recess or the connection projection has a thread or the like undiminished. It is essential, at least, that the connecting projection can be introduced into the connecting recess without a screwing movement and in this case is fixed by means of a spreading action.

For this purpose, it is particularly advantageous if the expansion element has a core recess, in which an expansion body can be introduced, wherein this can be shaped such that it can be hammered and / or screwed. Regardless of the specific embodiment of the expansion body, it is at least essential that the core recess in its diameter or the cross section of the core recess over the course is smaller than the size of the expansion body. In this way, upon introduction of the expansion body correspondingly causes a material displacement to the outside, which in turn causes a corresponding displacement to the outside at the expansion element. Thus, a connection between the connection projection and the connection recess effectively takes place.

In a simple way, the expansion body is in this case designed in a cylindrical pin shape or the like and thus can be easily taken. Advantageously, however, it may also be - as in the embodiment of the expansion element as part of the spacer - a version with an external thread on the spreader, wherein the external thread requires a screwing of the spreader. In particular, by a screwed spreader can be realized high spreading forces. Here, the thread design can be used comparable to known wood screws used.

In a particularly advantageous manner, it is possible to provide the spreader with an at least slightly raised thread. The spreader can be introduced here for assembly undiminished by being knocked into the core recess, but now be unscrewed again when needed. In order to allow the widening of the expansion body, a helical gearing is advantageously used, which favors a slight driving of the expansion body into the core recess. Here, the thread design of so-called nail screws can be used.

To ensure the transmission of the tensile loads from one connection element via the spacer element to the other connection element when using an expansion element in the spacer element and in the embodiment of the connection projection as the expansion element, it is particularly advantageous if the expansion element or the connection projection in this case has a plurality of elevations. Which type these elevations are, initially irrelevant, which are to be executed such that the spreading effect is an uneven action on the bore of the profiled bar or on the connecting recess. This results in the positions of the elevations through these to a - albeit very minor - material displacement in the profile bar or in the connecting recess. In particular, this ensures a particularly reliable connection for transmitting higher tensile forces.

In this case, the elevations can be selected in a variety of ways, wherein, in particular, pointed embodiments, for example in the form of a helical thread or alternatively a rotationally symmetrical helical toothing or in the manner of a plurality of individual mandrels, are suitable. It is important that the connecting projection can be introduced as a spreading before insertion of the expansion substantially without rectification in the connecting recess, wherein subsequently incorporated by the introduction of the spreader, the elevations in the material of the connecting recesses or in the hole in the profile bar. In this case, the use of standardized expansion dowels is to be considered as spreading to avoid additional tooling costs.

In order to realize a particularly cost-effective anchoring device, it is furthermore particularly advantageous if the spacer has a continuous bore for producing the connecting recess. The same applies in the embodiment for the bore of the profile bar in the execution of the spacer element with a profile bar and inserted therein spreading. In this respect, it is possible in a particularly advantageous manner to perform the spacer element or the profile bar as a straight extruded profile. In the simple case, the spacer element may be a straight tube. Thus, a particularly cost-effective element for the spacer element is realized.

To further reduce costs and at the same time to ensure a required bending and buckling strength, it is particularly advantageous if the spacer or the profile bar has at least one, in particular a plurality of ribs extending parallel to the longitudinal axis. Through these ribs, it is undiminished possible to form the spacer element as extruded profile, while still a high bending and buckling strength can be realized.

In this case, advantageously, the spacer or at least the profile bar as a component of the spacer element of already used in building construction, provided with star-shaped ribs tubes are formed.

To realize the required assurance of the position of a formwork panel relative to the other formwork panel by using the anchor devices, it is particularly advantageous if the spacer and the connection elements have opposite connection surfaces for abutment against the respective sides of the formwork panel. Ie. a connection element abuts the outer surface of the first formwork panel, the spacer element lying opposite the same formwork panel with a first connection surface. On the opposite side is also the spacer with a second pad on the second formwork panel and again opposite the second formwork panel is the other connection element on the outside of the formwork panel with a connection surface.

By the tensile force transmitting connection between the connection elements via the spacer element including the two formwork panels is realized at the same time by the connection surfaces a rigid connection between the anchor device and the formwork panels. This ensures that, in particular when lifting a form panel, a substantially same displacement of the other formwork panel is guaranteed. This means that it is not necessary to make sure that the position of the two shuttering plates is always maintained consistently in order to set up the shuttering, since this assigned position of the two shuttering plates is automatically guaranteed to one another by means of the anchoring devices. In this respect, a simple and quick installation of the lost formwork at the place of use can be carried out after a pre-assembly.

It is particularly advantageous, in particular for space-saving transport and for a high degree of variability, if neither the spacing element nor the connection element is firmly connected to the formwork panel. The connection with the formwork panel takes place here only by the connection of the connection element with the spacer element with the intermediate formwork panel. A screwing or bonding with the formwork panel is neither necessary nor advantageous.

For introducing a reinforcement in the component to be concreted, it is advantageous if the stabilizing anchoring devices are arranged in the region of the lower edge of the formwork panels. In this regard, the lower edge refers to the distance from the lower end of the shuttering plates which is suitable for allowing the anchor device to be attached to the shuttering plates without risk of breakage of the circuit boards while still leaving sufficient space for the introduction of reinforcements.

It is particularly advantageous if at least one holding element is arranged on each formwork panel in the region of the upper edge of the formwork panels, wherein the retaining elements can be connected to one another via a coupling element. This requires the removability of corresponding coupling elements to bring in a corresponding reinforcement can. In this respect, the holding elements are firmly connected to the formwork panels, whereas the coupling elements are applied after introduction of the reinforcement. Obviously, it requires the handling of the lost formwork such an embodiment of the anchor device, in which, without taking into account the coupling elements, a sufficient stable assignment of the two formwork panels to each other to handle the same is guaranteed.

In this particularly advantageous embodiment, it is ensured that, on the one hand, an uncomplicated and rapid installation of the lost formwork at the place of use is made possible and, nevertheless, a reinforcement for reinforcing the component to be concreted can be introduced in an uncomplicated manner. To ensure the position of the two formwork panels to each other during the actual concreting process, taking into account the hydraulic pressure, the use of the corresponding tensile load transmitting coupling elements is particularly advantageous and easy to use. Thus, a particularly cost-effective, easy to use and reliable system for realizing a lost formwork is made possible overall.

It is particularly advantageous in this case further, if the holder elements are designed as a perforated rails and are connected substantially parallel to the upper edge fixed to the formwork panel. In this case, these are preferably glued in a groove in the formwork panel, whereby a particularly cost-effective, as well as the other viable connection between the holder element is guaranteed as a perforated rail and the formwork panel. Furthermore, the use of wire hangers for the realization of the coupling elements is advantageous, as far as a particularly inexpensive and easy-to-use component is provided. By using the hole rail using the wire hanger can thus be made in terms of number and distribution flexible attachment of appropriate coupling elements, which can be accommodated according to different loads.

In the following figures examples of lost formwork are sketched.

Show it:

1 a first embodiment of a lost formwork with an anchoring device connected by means of spreading elements;

2 the spacer element to the anchor device according to 1 ;

3 the connection element to the anchor device according to 1 ;

4 another example of a lost formwork with a latched anchor device;

5 the spacer element to the anchor device according to 4 ;

6 the connection elements to the anchor device according to 4 ;

7 a further embodiment of an anchor device with multi-part spacer and connecting element;

8th the connection elements to the anchor device according to 7 ;

9 the spacer element to the anchor device according to 7 ,

In the 1 is a first embodiment of a lost formwork 01 sketched schematically. This first has the first formwork panel 03a as well as the second formwork panel 03b between which is the free space for the production of corresponding concrete components. At the top 04 the formwork panels 03 are in each of these grooves 05 incorporated, in which in turn holding elements 24 are glued in type of perforated rails. In recesses 25 in the perforated rails 24 is in each case a coupling element on both sides 26 used in the form of a wire hanger. This ensures the position of the two formwork panels 03a and 03b when concreting each other and is charged accordingly by the hydraulic pressure occurring.

At the lower edge 06 becomes an embodiment of an anchor device 11 to realize corresponding lost formwork 01 outlined. This first comprises once a spacer element 12 in arrangement between the first and second formwork panel 03a . 03b , The spacer element 12 is on both sides each with a connection element 17 connected so that tensile forces can be transmitted. For this purpose, in this embodiment, the connecting elements pass through 17 the formwork panels 03 in each case a recess 07 , In the example shown, the connection element 17 a connection projection 19 on, which is designed as a spreading element. This becomes the connection of the connection element 17 with the spacer 12 in a corresponding connection recess 14 in the spacer element 12 used.

In the 2 this is the spacer element 12 sketched in an exemplary embodiment as extruded profile. Here is in the 2a the spacer element 12 Recognizable in longitudinal section with a central through hole as a connecting recess 14 , lying on the outside ribs 15 connect. The two ends of the spacer 12 each form a connection surface 13a respectively. 13b , In the 2 B this is in cross-section, the execution of the spacer 12 in turn, the central bore as a connecting recess 14 and a star-shaped distribution of ribs 15 to recognize.

The complementary connection element 17 show the 3 this being a connection projection 19 having in the manner of a spreading element. For this purpose, the connection projection 19 a core recess 21 on, in which a spreader 22 is used. This causes the displacement of the connection projection 19 to the outside for attachment in the connection recess 14 or the bore. To increase the holding forces, the connecting projection 19 in this exemplary embodiment sawtooth-like elevations 20 on. To transfer bending loads from the anchor element on the formwork panels have the spacer element 12 as well as the connection elements 17 corresponding connection surfaces 13 respectively. 18 for fitting to the formwork panel 03 on.

As an alternative to the previous version, the 4 an embodiment of a lost formwork 30 in which an extendable anchor device 31 is sketched. Consistent with the previous version are in turn the formwork panels 03a such as 03b before, at the lower edge of an anchor device 31 is appropriate. Again, the distance between the two formwork panels 03a and 03b by means of the spacer element 32 realized. In contrast to the previous embodiment, however, now has the spacer element 32 on the first side a connecting recess 34a and on the second side, a connection protrusion 34b on. Complementary to this has a first connection element 37a a connection projection 39a and the second connection element 37b a connection recess 39b , Furthermore, in this embodiment, in contrast to the previous solution sketched a locking connection.

This shows the 5 the spacer element 32 to the anchor device 31 out 4 , this according to the first side of the connection recess 34a has, which for locking a transverse recess 35a having. In contrast to the previous solution of the spacer 2 , Now, in this embodiment, the spacer element 32 shown as a regular injection-molded component, wherein a honeycomb structure increases the flexural rigidity without additional cost. At the second end of the spacer 32 this has a corresponding connecting projection 34b on, which in turn this symmetrically opposite increments 35b having. To prevent disassembly or to ensure the corresponding transferability of occurring tensile forces due to the hydraulic pressure during concreting the locking connection by means of a locking element 36b in a position behind the grid increase 35b secured. Consistent with the previous version again has this spacer 32 corresponding connection surfaces on both sides 33 for contact with the formwork panels 03 on.

The complementary connection elements 37a and 37b for the execution of the spacer 5 show the 6 , In this case, the first connection element 37a a connection projection 39a analogous to the connection projection 34b at the spacer 32 on - see 6a , Likewise, this has corresponding increments 40a on, with a springback by means of a corresponding blocking element 41a is prevented. For attachment on the other side shows the 6b the second connection element 37b now with the connection recess 39b which transverse recesses arranged for this purpose 40b again in accordance with the spacer 32 with its connection recess 34a as well as their catch recess 35a , Furthermore, the connection elements 37 corresponding connection area 38 for contact with the formwork panels 03 on.

It's obvious how the spacer element 32 two or more times can be coupled together to realize different distances between the panels 03 , thus only one tool for the production of the spacer element 32 in any chain is necessary.

A particularly advantageous embodiment of an anchor device with regard to the tool costs 51 a lost formwork 50 is being in

7 outlined. To recognize is first again the formwork panel 03 with a continuous recess 07 , In contrast to previous versions, in this case for the spacer element 52 as well as for the connecting element 57 each used an assembly. The connection takes place here - comparable to previous versions - by introducing a connecting projection 59 , which in this case is realized by a screw end, ie a thread, in a connecting recess 54 , which is a core hole of an expansion anchor 64 is.

This outlines the 8th the connection element 57 to 7 , The use of a standardized screw can be seen 67 in which the screw end 59 with the thread forms the connection projection. A connection plate 68 gets off the screw 67 captured and can with the pad 58 to the formwork panel 03 be created.

In the 9 becomes the spacer element 52 to the anchor device 51 outlined. You can see the profile bar 62 , in whose bore an expansion dowel 64 is inserted as a spreading element. Its core drilling 54 forms the connecting recess for attachment of the connecting projection, ie the end of the screw 59 , At the same time, the collar of the expansion anchor 64 an investment plate 63 held, which has a large surface area 53 for fitting to the formwork panel 03 provides.

LIST OF REFERENCE NUMBERS

01

Lost formwork

03a

First formwork panel

03b

Second formwork panel

04

upper edge

05

Groove in formwork panel

06

Lower edge

07

recess

11

anchoring device

12

spacer

13

terminal area

14

Connecting recess / bore

15

ribs

17

connecting element

18

terminal area

19

Connecting projection / spreader

20

Projections / helical toothing

21

Kernausnehmung

22

spreader

24

Holding member / perforated rail

25

Recess / hole

26

Coupling element / wire hanger

30

Lost formwork

31

anchoring device

32

spacer

33

terminal area

34a

connecting recess

34b

connecting projection

35a

recess

35b

detent elevation

36b

blocking element

37a

First connection element

37b

Second connection element

38

terminal area

39a

connecting projection

39b

connecting recess

40a

detent elevation

40b

recess

41a

blocking element

50

Lost formwork

51

anchoring device

52

spacer

53

terminal area

54

Connecting recess / core hole

57

connecting element

58

terminal area

59

Connecting projection / screw end

62

profile bar

63

bearing plate

64

expansion anchor

67

screw

68

connecting plate

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 19523069 A1 [0002]

Claims (16)

Lost formwork ( 01 . 30 . 50 ), in particular for use in concreting foundations or the like, with at least one first and at least one second formwork panel ( 03a . 03b ) and a plurality of anchor devices ( 11 . 31 . 51 ), with which the two formwork panels ( 03 ) are maintained at a predetermined distance and in defined alignment with each other and form between them a space that can be filled with concrete, characterized in that the anchoring device ( 11 . 31 . 51 ) at least one spacer element ( 12 . 32 . 52 ) and at least two connection elements ( 17 . 37 . 57 ), wherein the spacer element ( 12 . 32 . 52 ) substantially between the two formwork panels ( 03 ) is arranged and via the two externally arranged on the formwork connection elements ( 17 . 37 . 57 ) with the formwork panels ( 03 ), wherein the spacer element ( 12 . 32 . 52 ) and / or the two connection elements ( 17 . 37 . 57 ) the formwork panels ( 03 ) in a recess ( 07 ) substantially. Lost formwork ( 01 . 30 . 50 ) according to claim 1, characterized in that at least one, in particular both, formwork panels ( 03 ) consist of a thermally insulating material. Lost formwork ( 30 ) according to claim 1 or 2, characterized in that the connecting element ( 37b ) a connection recess ( 39b ) and the spacer element ( 32 ) at least at one end a connection projection ( 34b ), wherein the connecting recess ( 39b ) with the connection projection ( 34b ) is positively and / or positively connectable. Lost formwork ( 01 . 30 . 50 ) according to one of claims 1 to 3, characterized in that the spacer element ( 12 . 32 . 52 ) at least at one end a connecting recess ( 14 . 34a . 54 ) and the connecting element ( 17 . 37a . 57 ) a connection projection ( 19 . 39a . 59 ), wherein the connecting recess ( 14 . 34a . 54 ) with the connection projection ( 19 . 39a . 59 ) is positively and / or positively connectable. Lost formwork ( 30 ) according to claim 4, characterized in that the spacer element ( 32 ) on one side a connecting recess ( 34a ) and on the other side a connection projection ( 34b ), wherein two spacer elements ( 32 ) for increasing the spacing of the shuttering plates ( 03 ) with each other via connection recess ( 34a ) and connection lead ( 34b ) are connectable. Lost formwork ( 30 ) according to one of claims 1 to 5, characterized in that the connecting recess ( 34a . 39b ) a latching recess ( 35a . 40b ) and the connection projection ( 34b . 39a ) a grid increase ( 35b . 40a ), wherein the grid increase ( 35b . 40a ) in the recess ( 35a . 40b ) can lock. Lost formwork ( 50 ) according to one of claims 1 to 5, characterized in that the connecting recess an internal thread and / or the connecting projection ( 59 ) has an external thread. Lost formwork ( 50 ) according to claim 7, characterized in that the connecting recess ( 54 ) of a core recess of a spreading element ( 64 ), in particular of a dowel hole, is formed, wherein the expansion element ( 64 ) in a profile bar ( 62 ) of the spacer element ( 52 ) is inserted. Lost formwork ( 01 ) according to one of claims 1 to 5, characterized in that the connecting projection ( 19 ) is designed as a spreading element. Lost formwork ( 01 . 30 ) according to claim 9, characterized in that the connecting projection ( 19 ) a core recess ( 21 ), in which an expansion body ( 22 ) can be introduced, in particular screwed and / or einschlagbar is. Lost formwork ( 01 . 30 . 50 ) according to one of claims 7 to 10, characterized in that the expansion element ( 64 ) or the connecting projection ( 19 ) a plurality of elevations, in particular a helical or rotationally symmetrical helical toothing ( 20 ) or thorns, which during assembly a material displacement in a bore of the profile bar ( 62 ) or the connection recess ( 14 ) cause. Lost formwork ( 01 ) according to one of claims 7 to 11, characterized in that the spacer element ( 12 ) or the profile bar ( 62 ) a through hole ( 14 ) for generating the connection recess on both sides or for receiving the expansion element ( 64 ) having. Lost formwork ( 01 ) according to claim 12, characterized in that the spacer element ( 12 ) at least one, in particular a plurality, parallel to the longitudinal axis extending ribs ( 15 ) to increase the bending and buckling strength. Lost formwork ( 01 . 30 . 50 ) according to one of claims 1 to 13, characterized in that the spacer element ( 12 . 32 . 52 ) and the connection elements ( 17 . 37 . 57 ) opposite connection surfaces ( 13 and 18 . 33 and 38 . 53 and 58 ) with an attachment on the respective sides of the Shuttering plates ( 03 ), wherein the system when lifting a formwork panel ( 03a ) a substantially same displacement of the other formwork panel ( 03b ) guaranteed. Lost formwork ( 01 . 30 . 50 ) according to one of claims 1 to 14, characterized in that the anchor devices ( 11 . 31 . 51 ) in the area of the lower edge ( 06 ) of the formwork panels ( 03 ) are arranged, wherein in particular in the region of the upper edge ( 04 ) of the formwork panels ( 03 ) at least one retaining element ( 24 ) on each formwork panel ( 03 ), wherein the retaining elements ( 24 ) via at least one coupling element ( 26 ) are interconnectable. Lost formwork ( 01 . 30 . 50 ) according to one of claims 1 to 13, characterized in that the retaining element as a perforated rail ( 24 ) and substantially parallel to the upper edge ( 04 ) fixed to the formwork panel ( 03 ), in particular in a groove ( 05 ) in the formwork panel ( 03 ) is glued, wherein the coupling element as a wire bow ( 26 ) is formed, whose ends in recesses ( 25 ) of the perforated rail ( 24 ) are hooked.

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