Note: Descriptions are shown in the official language in which they were submitted.
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Frame formwork element and frame formwork system,
use of a batten in a frame formwork system
Reference to related applications
The present application claims the priority of the German patent application
No. 10 2020 123
075.3, tiled on 3rd September 2020, which is incorporated in its entirety by
reference into the
present document.
The invention relates to a frame formwork element for a frame formwork system
for
producing a wall section in concrete construction. Furthermore, the invention
relates to a
frame formwork system having at least one frame formwork element in accordance
with the
invention and at least one batten for producing a wall profile in concrete
construction.
Moreover, the invention relates to use of a batten in a frame formwork system.
Prior art
The printed patent specification DE 39 11 301 Cl discloses as an example a
framework
element for concrete formworks which comprises a frame formwork having a
formwork skin
and a facing formwork which is attached to the formwork skin of the frame
formwork. In this
manner, the facing formwork forms a type of second formwork skin. A facing
formwork which
is used as a second formwork skin, as described in the printed patent
specification DE 39 11
301 Cl, can be provided but is not mandatory.
The frame formwork which is described in the printed patent specification DE
39 11 301 Cl
comprises a circumferential frame for receiving the (first) formwork skin. The
formwork skin
is placed on the frame outer side so that the end sides of the formwork skin
are
encompassed by a circumferential edge of the frame. Preferably, the
circumferential edge
closes in a flush manner with the surface of the formwork skin. Supporting
struts can be
arranged between the limbs of the frame so as to support the formwork skin in
its planar
extent. This frame can have a circumferential groove-forming fastening
corrugation on the
inner side for connecting the supporting struts to said frame. In addition,
the fastening groove
can be used to receive clamps for connecting two adjacent frame formwork
elements.
In the case of a frame formwork of the aforementioned type, the formwork skin
can be
produced from wood, synthetic material or a composite material which comprises
at least
one of these materials. Hollow profiles of metal, in particular steel, are
used for producing the
frame. However, a light metal, such as for example aluminum, can also be used.
In this
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case, the selection of the material and/or the dimensioning of the hollow
profile depend inter
alia on the size of the frame formwork.
Thin-walled hollow profiles are regarded as advantageous for producing a frame
formwork
since these help to save material and costs. At the same time, the weight of
the frame
formwork reduces, so that this is easier to handle. However, the use of thin-
walled hollow
profiles is accompanied by the risk that, when used in the intended manner,
the frame
formwork does not withstand the high loading. For example, the risk of
buckling under a load
is greater in the case of a thin-walled hollow profile.
When a frame formwork is used as intended for producing a wall section in
concrete
construction, at least two frame formwork elements are usually set up parallel
and at a
predetermined distance from one another and/or are coupled to at least one
adjacent frame
formwork element by means of clamps. When fresh concrete is poured between two
parallel
frame formwork elements, it must be ensured that the concrete does not press
them apart.
The frame formwork elements must therefore be fixed, especially in the area of
their base
point. In the case of two adjacent frame formwork elements, the coupling area
in particular
must withstand the pressure of the concrete.
Based on the aforementioned prior art, the object of the present invention is
to increase the
load-bearing capacity of a frame formwork, and namely both the load-bearing
capacity of the
individual frame formwork element and the load-bearing capacity of the
connecting and/or
coupling areas of the frame formwork element.
So as to achieve the object, the frame formwork element having the features of
claim 1 and
the frame formwork system having the features of claim 9 are proposed.
Advantageous
developments of the invention can be found in the respective subordinate
claims. The object
is further achieved by the proposed use of a batten in a frame formwork system
in
accordance with the invention.
Disclosure of the invention
The frame formwork element which is proposed for a frame formwork system for
producing a
wall section in concrete construction comprises a plurality of edge profiles
which form a
frame having a frame inner side and a frame outer side. At least one edge
profile is a hollow
profile and in the cross-section has a profile section on the frame inner side
having a groove-
forming fastening corrugation and a profile section on the frame outer side
having a groove-
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forming reinforcing corrugation. In the cross-section of the edge profile, the
fastening
corrugation and the reinforcing corrugation lie opposite one another other and
have the
same shape.
The frame of the frame formwork element can in particular have four edge
profiles, two
vertical edge profiles, a lower edge profile and an upper edge profile, so
that the frame forms
a quadrilateral, in particular a rectangle. A plurality of frame formwork
elements of the same
type can thus be set up next to one another and coupled in a simple manner in
order to
enable the production of a wall section in a predetermined length.
In the hollow profile design, the at least one edge profile of the proposed
frame formwork
element already has a high degree of inherent rigidity.
To further increase the load-bearing capacity, in particular to minimize the
risk of buckling,
the at least one edge profile comprises a groove-forming reinforcing
corrugation in addition
to a groove-forming fastening corrugation. While the fastening corrugation is
formed on the
frame inner side, the reinforcing corrugation is located on the frame outer
side, i.e. in a
profile section which extends essentially perpendicular to the plane of the
frame or
perpendicular to the plane of the formwork skin. The reinforcing corrugation
thus increases
the load-bearing capacity of the edge profile in the main load direction of
the frame formwork
element. The same applies moreover for the fastening corrugation, so that it
also contributes
to the reinforcing of the edge profile.
The groove-forming reinforcing corrugation lies opposite the groove-forming
fastening
corrugation in the cross-section of the edge profile. This means that the
reinforcing
corrugation is arranged at the same "height" in the direction of the profile
depth as the
fastening corrugation. In this manner, the two corrugations form a kind of
constriction of the
profile cross-section in the cross-section of the edge profile. This has an
advantageous effect
on the load distribution and/or load transfer when the frame formwork element
is loaded
perpendicular to the frame plane or in the main load direction.
The groove-forming reinforcing corrugation also has the same shape in the
cross-section of
the edge profile as the groove-forming fastening corrugation. This measure
also has an
advantageous effect on the load distribution and/or load transfer when the
frame formwork
element is loaded perpendicular to the frame plane or in the main load
direction. The
reinforcing corrugation and the fastening corrugation can have, for example, a
V, U or
trapezoidal shape in the cross-section of the edge profile. Such shapes can be
produced in a
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simple manner during the production of the edge profile, for example in a
forming process.
Due to the increased load-bearing capacity or the minimized risk of buckling,
the wall
thickness of the edge profile can subsequently be reduced. This means that a
particularly
thin-walled hollow profile can be used as an edge profile. Alternatively or
additionally, the
profile depth of the edge profile can be reduced. The profile depth
corresponds to the
dimension of the edge profile perpendicular to the plane of the frame or the
formwork skin.
Both measures - alone or in combination - help to reduce the weight of the
frame formwork
element and thus make it easier to handle. Moreover, material is saved in the
production of
the frame formwork element, so that the production costs are reduced.
The hollow profile is preferably produced from metal, in particular steel,
since steel has a
high strength, so that the robustness of the frame formwork element is further
increased.
The provision of a groove-forming reinforcing corrugation on the frame outer
side in the at
least one edge profile of the frame formwork element in accordance with the
invention also
has further advantages.
For example, the groove-forming reinforcing corrugation - analogous to the
tongue-and-
groove principle - can be used as a connecting and/or coupling element. This
is possible
since the groove-forming reinforcing corrugation is provided on the frame
outer side or in a
profile section of the edge profile which forms the frame outer side. The use
of the groove-
forming reinforcing corrugation as a connecting and/or coupling element
simplifies the fixing
of the frame formwork element, for example in the area of the base point.
Furthermore, the
lateral connection of the frame formwork element and/or the coupling of the
frame formwork
element to another frame formwork element can be simplified. At the same time,
the load-
bearing capacity of the frame formwork element increases in these connecting
or coupling
areas, since the tongue-and-groove principle enables a positive fit to be
achieved which acts
in the main load direction of the frame formwork element.
Preferably, the groove-forming fastening corrugation and the groove-forming
reinforcing
corrugation each extend in the longitudinal direction of the profile over the
entire length of the
edge profile. The reinforcing effect is thus achieved over the entire length
of the edge profile.
In addition, the connecting or coupling possibilities described above are
created over the
entire length of the edge profile.
In development of the invention, it is proposed that in the profile section on
the frame outer
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side the at least one edge profile which comprises the groove-forming
reinforcing corrugation
comprises at least one further groove-forming reinforcing corrugation and said
groove-
forming reinforcing corrugation extends parallel to the first groove-forming
reinforcing
corrugation in the longitudinal direction of the profile. The further
reinforcing corrugation not
only contributes to further reinforcing the edge profile and thus to an
increase in the load-
bearing capacity of the frame or the frame formwork element, but at the same
time increases
the connecting or coupling possibilities of the frame formwork element.
Preferably,
accordingly at least two edge profiles which are arranged at an angle to one
another or lying
opposite one another, preferably all edge profiles of the frame, have a second
groove-
forming reinforcing corrugation.
The two parallel groove-forming reinforcing corrugations can have the same
shape or
different shapes in the cross-section of the edge profile. In particular, the
two groove-forming
reinforcing corrugations can have a V, U and/or trapezoidal shape in the cross-
section of the
edge profile. For example, the first groove-forming reinforcing corrugation
can have a
trapezoidal shape in the cross-section of the edge profile, while the second
groove-forming
reinforcing corrugation has a V-shaped cross-section.
Advantageously, the shape of the two groove-forming reinforcing corrugations
differs in the
cross-section of the edge profile. Due to the different shape of the groove-
forming reinforcing
corrugations, defined connecting or coupling geometries can be created, which
are
characteristic for a system which comprises further system components in
addition to the
frame formwork element in accordance with the invention. The defined
connecting or
coupling geometries ensure the compatibility of the system components. A
corresponding
frame formwork system is described in more detail below.
Preferably, not only one edge profile of the frame formwork element comprises
a groove-
forming fastening corrugation and a groove-forming reinforcing corrugation,
but at least two
edge profiles. This can be two edge profiles which are arranged at an angle to
one another,
for example a vertical and a lower edge profile, or two edge profiles which
lie opposite one
another, for example two vertical edge profiles.
The groove-forming fastening corrugations of two opposite-lying edge profiles
can be used,
for example, to fasten struts or rungs, which are arranged in the plane of the
frame, to the
frame. Analogous to the tongue and groove principle, the struts or rungs can
each have a
geometry which engages in the fastening groove at the end, so that a positive
fit with the
frame is achieved. The positive fit acts in the main load direction of the
frame formwork
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element, so that the formwork skin which is resting on the struts or rungs is
optimally
supported. Moreover, the groove-forming fastening corrugations can be used to
receive
clamps for connecting two adjacent frame formwork elements.
The groove-forming reinforcing corrugations of two edge profiles which are at
an angle to
one another or lie opposite one another can be used in particular to form a
lateral and/or
lower connection of a frame formwork element and/or to couple two adjacent
frame formwork
elements.
Preferably, all frame-forming edge profiles of the frame formwork element
comprise a
groove-forming fastening corrugation and a groove-forming reinforcing
corrugation, so that a
circumferential fastening corrugation is formed on the frame inner side and a
circumferential
reinforcing corrugation on the frame outer side. The circumferential fastening
corrugation
enables both horizontally and vertically extending struts or rungs to be
fastened. The
circumferential reinforcing corrugation increases the connecting or coupling
possibilities. In
addition, the entire frame is reinforced by means of the circumferential
corrugation.
Furthermore, all frame-forming edge profiles of a frame formwork element are
preferably
produced from the same hollow profile. All edge profiles of a frame thus have
the same
profile cross-section.
In a preferred embodiment of the invention, the frame of the proposed frame
formwork
element comprises four edge profiles which have the same profile cross-section
and are
connected to one another in such a manner that the at least one reinforcing
corrugation
which is arranged on the frame outer side is formed circumferentially. To form
at least one
circumferential reinforcing corrugation, the edge profiles can be connected to
one another,
for example, by means of a miter.
The proposed frame formwork element preferably furthermore comprises:
a formwork skin which is resting on the edge profiles and/or
a plurality of rungs which are arranged in the plane of the frame, extend
perpendicular to one another and/or to the edge profiles and are connected to
the edge
profiles.
The formwork skin can - as already mentioned at the beginning - be enclosed on
the end
side by an edge of the frame. The edge protects the end side of the formwork
skin from
damage. Preferably, the edge of the frame is flush with the formwork skin. The
plurality of
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rungs which are arranged in the plane of the frame - if they are provided -
support the
formwork skin. In this manner, comparatively large, in particular large-area,
frame formwork
elements can be manufactured. The rungs can also comprise one or more tie
holes for
receiving ties. With the aid of a tie, two frame formwork elements which are
arranged in
parallel can be braced together in the surface so that the concrete which is
filled between the
two frame formwork elements does not press them apart. In this manner, the tie
promotes a
high degree of evenness of the wall section which is to be produced.
The frame formwork system which is furthermore proposed for producing a wall
section in
concrete construction comprises at least one frame formwork element in
accordance with the
invention and at least one batten for arranging on the frame outer side on an
edge profile of
the frame of the frame formwork element. The additionally provided batten
increases the
application possibilities of the frame formwork system. For example, the
batten enables
length or height compensation. Moreover, the batten can be used as a
connecting and/or
coupling element. The batten of the proposed frame formwork system comprises
at least one
projecting geometry which can be brought into engagement with the at least one
groove-
forming reinforcing corrugation of the edge profile of the frame formwork
element. This
means that the projecting geometry of the batten and the groove-forming
reinforcing
corrugation of the edge profile interact according to the tongue-and-groove
principle. A
positive fit is thus achieved between the batten and the frame formwork
element, which
increases the load-bearing capacity of the connecting or coupling area in the
main load
direction.
If the groove-forming reinforcing corrugation of the frame of the frame
formwork element is
designed to be circumferential, the batten can be arranged at any point on the
frame outer
side. This means that the batten can be arranged laterally next to, below or
above the frame
of the frame formwork element and positively connected to it. A laterally
arranged batten can
be used in particular for coupling two adjacent frame formwork elements. In
addition, a
length compensation can be created with the aid of this batten. Moreover,
radii can be
represented. With the aid of a compensation batten which is arranged under a
frame of a
frame formwork element, the frame formwork element can be precisely positioned
and
aligned.
The at least one batten can thus fulfill a variety of different tasks.
Depending on the
respective task to be fulfilled, the batten can thus be a connecting,
coupling, compensating,
positioning and/or buckling batten.
Preferably, the at least one projecting geometry of the batten extends in the
longitudinal
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direction of the batten. Furthermore, preferably, the projecting geometry
extends over the
entire length of the batten. The positive fit with the corresponding edge
profile of the frame
formwork element is thus also achieved over the entire length of the batten,
which further
increases the load-bearing capacity of a connecting or coupling area which is
formed with
the aid of the batten.
Alternatively or additionally, it is proposed that the at least one projecting
geometry has in
the cross-section of the batten an outer contour which is adapted to an inner
contour of the
at least one groove-forming reinforcing corrugation of the edge profile.
Preferably, the cross-
sectional shape of the projecting geometry of the batten is designed to be the
opposite of the
cross-sectional shape of the groove-forming reinforcing corrugation of the
edge profile. In
this manner, a high fitting accuracy is achieved in the area of the positive
fit. This in turn
counteracts a relative movement of the batten with respect to the edge
profile.
As an additional measure, it is proposed that the batten comprises on the side
which faces
away from the projecting geometry at least one groove-forming reinforcing
corrugation,
which extends in the longitudinal direction of the batten, for receiving a
projecting geometry
of a further batten and/or a sealing element. The batten thus comprises two
connection
sides, wherein the first connection side has a projecting geometry and the
second
connection side comprises a groove-forming reinforcing corrugation. The
projecting
geometry and the groove-forming reinforcing corrugation are preferably
arranged lying
opposite one another or at the same "height" in the cross-section of the
batten, so that the
batten can be connected to a large number of similar battens by simply
plugging them into
one another. In this manner, a positive fit which is effective in the main
load direction is
achieved at the same time between the battens.
In order to create a cavity for receiving a sealing element, two battens
having at least one
groove-forming reinforcing corrugation each can be arranged and aligned with
one another
in such a manner that the respective groove-forming reinforcing corrugations
lie opposite
one another. A corresponding cavity can also be created - alternatively or
additionally -
between a batten and an edge profile of a frame formwork element, since said
edge profile
also comprises at least one groove-forming reinforcing corrugation on the
frame outer side.
Advantageously, the batten is a hollow profile. In the design as a hollow
profile, the batten
per se already has a high degree of inherent rigidity. In addition, the at
least one projecting
geometry and - if provided - the at least one groove-forming reinforcing
corrugation which
extends in the longitudinal direction of the batten further increase the
inherent rigidity.
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Advantageously, the hollow profile is produced from metal, in particular
steel, since steel is
particularly strong and therefore robust.
Preferably, the batten comprises two oppositely profiled side faces and two
end faces which
connect the side faces. The oppositely profiled side faces form the connecting
faces. They
determine the depth of the batten. This preferably corresponds to the profile
depth of the
frame-forming edge profiles of the frame formwork element, so that the batten
can be
arranged in such a manner that it is flush with the frame of the frame
formwork element. The
two end faces of the batten define the width of the batten, whereby the width
can vary. This
means that in the cross-section of the batten, the two end faces can be of the
same or
different length. If the two end faces have the same length, the batten has a
constant width
when the at least one projecting geometry and the groove-forming reinforcing
corrugation ¨ if
provided - are disregarded. If the two end faces have different lengths or the
batten has a
varying width, the latter can be used to couple two frame formwork elements
which are
arranged at an angle with respect to one another. This means that they do not
extend in
alignment, but rather at an angle < 180 or at an angle > 1800. If a plurality
of battens of
varying widths are used for coupling two frame formwork elements, the formwork
skin can
achieve a curvature which consists of a plurality of bends in the plane. Such
a batten can
therefore also be referred to as a "buckling batten".
If a plurality of battens are used to couple two frame formwork elements, they
do not
necessarily have to be of the same design. This means that a batten having a
varying width
can also be coupled to a batten which has a constant width. Moreover two
battens can be
coupled to one another, each of which has a constant width but whose widths
differ from one
another. By providing battens of different widths, they can be easily
exchanged and/or
combined with one another as desired. This results in a
modular system, which increases the variability of the frame formwork system.
In particular, the battens of different widths can be used to compensate the
length. The
battens having different widths can therefore be referred to as "compensating
battens". A
combination of compensating battens and buckling battens can also be used.
According to a preferred embodiment, the proposed frame formwork system
therefore
comprises a plurality of battens which can be brought into engagement with one
another and
with at least one edge profile of the frame of the frame formwork element and
said battens
preferably differ from one another in terms of their widths. Alternatively or
additionally, it is
proposed that at least one batten has a varying width.
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The at least one batten of the proposed frame formwork system can furthermore
be used for
positioning a frame formwork element. For this purpose, the batten is fixed to
the existing
substrate or base so that the at least one projecting geometry points upwards.
This means
that the dimension which is previously defined as the width now corresponds to
the height of
the batten. When a frame formwork element is placed on the batten, the
projecting geometry
is brought into engagement with the at least one groove-forming reinforcing
corrugation of
the lower horizontally extending edge profile of the frame formwork element.
In this manner,
the batten determines the position of the frame formwork element. The batten
can therefore
also be referred to as a "positioning batten". The positive fit which is
achieved by means of
the projecting geometry of the batten not only facilitates the positioning or
alignment of the
frame formwork element, but also fixes the frame formwork element in the area
of its base
point.
In development of the proposed frame formwork system, this therefore comprises
at least
one batten for positioning a frame formwork element. In order to fix the
batten on the base
side, it can have at least one opening for receiving a fastening means, for
example a screw
or a bolt. In particular, the opening can be designed as an elongated hole to
enable precise
alignment of the batten. Preferably, the opening is arranged in a lowered area
of a projecting
geometry of the batten, so that the fastening means does not protrude beyond
the projecting
geometry. This is because in this case the fastening means could hinder the
positive fit of
the batten having the edge profile of the frame formwork element which is to
be positioned.
The fact that the opening is arranged in a lowered area of a projecting
geometry of the
batten means that the original height of the batten is also retained as a load-
bearing cross-
section.
Furthermore, the proposed frame formwork system preferably comprises a tension
strap
which is or can be fastened to the batten with the aid of the fastening means
and which can
be fastened at the other end in the same manner to a further, parallel batten,
so that a
distance between the two battens can be predetermined by means of the tension
strap. The
distance between the two battens also defines a distance between the two frame
formwork
elements which are positioned with the aid of the two battens. The distance
preferably
corresponds to the thickness of the wall section which is to be produced.
During the
concreting of the wall section, the tension strap prevents the fresh concrete
which is filled
between the two frame formwork elements from pressing the frame formwork
elements
and/or the battens apart.
Various possibilities thus arise for using a batten having at least one
projecting geometry in a
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frame formwork system in accordance with the invention, in particular for
positioning a frame
formwork element and/or for coupling two frame formwork elements. For this
purpose, the
batten is arranged on the frame outer side on an edge profile of the frame
formwork element
and the at least one projecting geometry is brought into engagement with a
groove-forming
reinforcing corrugation of the edge profile. In a corresponding use, a
connecting, coupling,
compensating, positioning and/or buckling batten can be used.
Preferred embodiments of the invention are explained in more detail below with
reference to
the accompanying drawings. In the drawings:
Fig. 1A shows a perspective view of a frame formwork element in
accordance with the
invention,
Figs. 1B-1D each show a cross-section through an edge profile of the frame
formwork
element of Fig. 1A,
Figs. 2A-2C each show a cross-section and a sectional view of a batten for a
frame
formwork system in accordance with the invention, wherein the battens differ
in terms of their
widths,
Fig. 2D shows a cross-section through the battens of Figs. 2A-2C in a
coupled state,
Fig. 3A shows a view of a first frame formwork system in accordance
with the invention,
Fig. 3B shows a horizontal section through the frame formwork system of
Fig. 3A,
Fig. 3C shows an enlarged section of Fig. 3B in the area of the
coupling of two frame
formwork elements,
Figs. 4A-4D each show a cross-section and a sectional view of a batten for a
frame
formwork system in accordance with the invention,
Fig. 5A shows a horizontal section through a second frame formwork
system in
accordance with the invention,
Fig. 5B shows a horizontal section through a third frame formwork
system in
accordance with the invention,
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Fig. 6A shows a perspective view of a batten for positioning a frame
formwork element,
Fig. 6B shows an enlarged section of Fig. 6A,
Fig. 6C shows a perspective view of a fastening means,
Fig. 7 shows a perspective view of the batten in combination with
another batten for
positioning a frame formwork element,
Fig. 8A shows a perspective view of two battens for positioning a frame
formwork
element and which are connected by means of tension straps,
Fig. 8B shows a perspective view of a tension strap,
Figs. 8C-8D each show an enlarged section of Fig. 8A,
Fig. 9A shows a perspective view of two battens for positioning a frame
formwork
element and which are connected by means of tension straps,
Fig. 9B shows a perspective view of a locking bolt,
Figs. 9C-9E each shows a cross-section through a batten during the assembly of
a locking
bolt,
Fig. 10 shows a perspective view of a frame formwork system in
accordance with the
invention having a plurality of frame formwork elements which are positioned
by means of
battens,
Fig. 11 shows a perspective view of a further frame formwork system in
accordance
with the invention,
Fig. 12 shows a perspective view of a frame formwork system in
accordance with the
invention having a push-pull prop and having two horizontally arranged battens
for stacking
the system,
Fig. 13 shows a side view of the frame formwork system of Fig. 12 and
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Fig. 14 shows a perspective view of a frame formwork system in
accordance with the
invention having frame formwork elements which are arranged one above the
other.
Detailed description of the drawings
Fig. 1A shows a preferred embodiment of a frame formwork element 100 which
comprises a
frame 102, which is formed from four edge profiles 101, and a web bracing of
horizontally
and vertically extending rungs 108. Each of the four edge profiles 101 is
designed as a
hollow profile. All edge profiles 101 also have the same cross-section. This
is shown
enlarged in Figs. 1B to 1D for the upper edge profile 101 (Fig. 1B), the two
lateral edge
profiles 101 (Fig. 1C) and the lower edge profile 101 (Fig. 1D). Accordingly,
all four edge
profiles 101 have an essentially rectangular cross-section with a kind of
collar as edge
protection 111 for a formwork skin 110 (analogous to Fig. 3C). Furthermore,
each edge
profile 101 comprises a first profile section having a groove-forming
fastening corrugation
107 which extends in the longitudinal direction of the profile and a second
profile section
having two groove-forming reinforcing corrugations 105, 106 which also extend
in the
longitudinal direction of the profile. The first reinforcing corrugation 105
lies exactly opposite
the fastening corrugation 107 and also has the same cross-sectional shape.
This is
trapezoidal. The other reinforcing corrugation 106, on the other hand, has a V-
shaped cross-
section.
The edge profiles 101 of the frame 102 are arranged in such a manner that the
profile
sections having the one fastening corrugation 107 form a frame inner side 103
and the
profile sections having the two reinforcing corrugations 105,106 form a frame
outer side 104
of the frame 102. Since the edge profiles 101 are connected by means of a
miter 112, a
circumferential fastening corrugation 107 is formed on the frame inner side
and two
circumferential reinforcing corrugations 105, 106 are formed on the frame
outer side.
The frame formwork element 100 shown in Fig. 1A can be combined with a batten
200 in a
frame formwork system 300 (see Figs. 3A to 3C). A preferred embodiment of a
batten 200 of
different widths b1-b3 is shown in Figs. 2A to 2D. The battens 200 are also
designed as
hollow profiles, analogous to the previously described edge profiles 101. They
have two
profiled side faces 205, 206 and two end faces 207, 208 which connect the side
faces 205,
206. The cross-sectional shape of the battens 200 shown is thus essentially
rectangular, if
the profiling of the side faces 205, 206 is disregarded. It is noticeable that
the profiling of the
side face 206 corresponds to the profiling of the frame outer side 104 of the
frame 102 of the
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previously described frame formwork element 100, and the profiling of the side
face 205 is
formed in exactly the opposite manner. This means that the battens 200 can be
coupled to
one another as well as to the frame 102 of the frame formwork element 100.
When two
battens 200 are coupled, projecting geometries 201, 202 on the side face 205
engage in the
groove-forming reinforcing corrugations 203, 204 of the coupled batten 200, so
that a
positive fit is achieved. Such a coupling of the three battens 200 shown can
be seen in Fig.
2D. Similarly, each of the battens 200 shown can be coupled to the frame 102
of the frame
formwork element 101 of Fig. 1A.
Figs. 3A to 3C show a first frame formwork system 300 in accordance with the
invention,
having two frame formwork elements 100 according to Fig. 1A and three battens
200
according to Fig. 2D. The two frame formwork elements 100 are coupled to one
another by
means of the three battens 200 (see in particular Figs. 3B and 3C). In this
manner, in
addition to the coupling of the frame formwork elements 100, a length
compensation can be
achieved at the same time. While the left-hand batten 200 engages positively
in the edge
profile 101 of the left-hand frame formwork element 100, the right-hand batten
200 forms two
cavities 209 together with the edge profile 101 of the right-hand frame
formwork element 100
(see in particular Fig. 3C). Sealing elements (not shown) can be inserted into
these cavities
209 so that no water can escape via the joint area. At the same time, a
coupling can be
achieved by means of the sealing elements, which counteracts a relative
movement of the
coupled elements.
As can be seen in particular in Fig. 3C, the frame formwork elements 100 each
have a
formwork skin 110 which rests on the respective frame 102 and is flush with
the edge
protection 111 of the edge profiles 101 of the frame 102.
Figs. 4A to 4D show further battens 200 for a frame formwork system 300
according to Fig.
3A. These differ from one another by different widths b1 to b4, wherein each
batten 200 has
a variable width over the entire depth f of the batten. In the case of the
batten 200 shown in
Fig. 4A, the width b1 increases over the depth f, so that it has a width b1+
at the other end
(the projecting geometries 201, 202 and the groove-forming reinforcing
corrugations 203,
204 are not taken into account when determining the width). The batten 200 of
Fig. 4C is
designed analogous to the batten 200 of Fig. 4A, but has a smaller overall
width b3, which
increases to the width b3+. The opposite is true for the batten 200 in Fig. 4B
and Fig. 4D.
Here the width b2 or b4 decreases to a width b2- or b4-. With the aid of the
battens 200
shown, bucklings and/or curvatures can be created in the plane of the formwork
skin 110, as
shown as an example in Figs. 5A and 5B. The course of the wall section which
is to be
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produced can be influenced in this manner. In particular, a convex course
(Fig. 5A) or a
concave course (Fig. 5B) can be specified. Instead of the two battens 200
shown, only one
or more than two battens 200 can be used. Furthermore, different battens 200
can be used.
Another preferred batten 200 for a frame formwork system 300 in accordance
with the
invention can be seen in Figs. 6A and 6B. The batten 200 is used for
positioning a frame
formwork element 100 and is arranged for this purpose under the frame formwork
element
100 or on the respective substrate. Due to the changed position of the batten
200, the
original width now corresponds to the height of the batten. The batten 200 is
placed on the
substrate with the projecting geometries 201, 202 pointing upwards and is
fixed in the
substrate with the aid of fastening means 211 in the form of screws (see Fig.
6C). For
receiving the fastening means 211, the batten 200 comprises a lowered area 212
in the area
of the projecting geometry 201 with an opening 210 in the form of an elongated
hole (see in
particular Fig. 6B). The lowered area 212 ensures that the fastening means 211
does not
protrude beyond the projecting geometry 201 of the batten 200. Since this
would impair the
positive fit between the batten 200 and the frame formwork element 100.
As shown as an example in Fig. 7, two such battens 200 can be arranged in a
mirrored
arrangement, at a distance from one another on the substrate and fixed. The
distance is
determined by the thickness of the wall section which is to be produced. A
frame formwork
element 100 can then be placed on each of the two battens 200 so that the
projecting
geometries 201, 202 of the battens 200 engage in the corresponding groove-
forming
reinforcing corrugations 105, 106 of the respective frame formwork element
100. In this
manner, a positive fit is achieved between the battens 200 and the frame
formwork elements
100, which prevents the concrete placed between the two frame formwork
elements 100
from pressing them apart when concreting the wall section which is to be
produced.
However, this presupposes that the battens 200 are not pressed apart either.
To counteract this, the two battens 200 can be connected by means of tension
straps 213 -
as shown as an example in Figs. 8A to 8D. The tension straps 213 each have an
opening
215 in the form of an elongated hole at their two ends for receiving locking
bolts 214 (see
Fig. 8B), by means of which the tension straps 213 can be connected to the
battens 200.
Instead of the locking bolt 214, the fastening means 211 in the form of a
screw can also be
used, with the aid of which the batten 200 can be anchored in the substrate at
the same
time.
A preferred locking bolt 214 is shown as an example in Fig. 9B. It comprises
an elongated
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head 216 which is aligned transversely to the longitudinal direction of the
batten 200 when it
is inserted into the opening 215 of the tie strap 213 and is then twisted so
that it is aligned
parallel to the longitudinal direction of the batten 200. The locking bolt 214
is inserted
analogous to the fastening means 211 into an opening 210 of a lowered area 212
of the
batten 200 (see Fig. 9A). This ensures that the locking bolt 214 does not also
protrude
beyond the projecting geometry 201 of the batten 200. Rotating the locking
bolt 214 so that
the elongated head 216 is aligned parallel to the longitudinal direction of
the batten 200
further ensures that it remains completely behind the projecting geometry 201
(see Figs. 9C
to 9E). The positive fit between the batten 200 and the frame formwork element
100 is
therefore not compromised.
Fig. 10 shows another frame formwork system 300 for producing a wall section
in concrete
construction. The frame formwork elements 100 are each positioned by means of
battens
200 on the base side and held at a distance which corresponds to the thickness
of the wall
section which is to be produced. As previously described, the battens 200 are
fixed to the
substrate by means of fastening means 211 in the form of screws. The distance
between the
battens 200 is maintained by tension straps 213, each of which is connected to
the battens
200 by means of locking bolts 214. Neither the fastening means 211 nor the
locking bolts
214 project beyond the projecting geometries 201 of the battens 200, so that
these engage
positively in the corresponding groove-forming reinforcing corrugation 105 of
the respective
frame formwork element 100. The frame formwork elements 100 are thus
positioned over
the base-side battens 200 and held at a distance.
A plurality of tie holes 109 are provided in the vertical rungs 108 of the
frames 102 of the
frame formwork elements 100. These are also formed in the respective formwork
skin 110.
Thus, anchor tie rods 302 can be inserted into the tie holes 109 and enable
two opposing
frame formwork elements 100 to be braced together (see as an example Fig. 12).
In addition to the battens 200 for positioning the frame formwork elements
100, the frame
formwork system 300 shown in Fig. 10 also comprises battens 200 for coupling
two adjacent
frame formwork elements 100. In this case, the coupling is achieved with the
aid of two
coupled battens 200 of different widths.
Fig. 11 shows another framed formwork system 300, which largely corresponds to
that of
Fig. 10. Here, however, two framed formwork elements 100 are coupled by means
of three
coupled battens 200 of different widths.
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As shown as an example in Fig. 12, after positioning the frame formwork
elements 100 on
the battens 200, the frame formwork elements 100 can be vertically aligned and
additionally
supported with the aid of a push-pull prop 301. Furthermore, an anchor tie rod
302 is
inserted respectively into a centrally arranged tie hole 109 of a frame
formwork element 100
and said anchor tie rod is used to absorb horizontal loads. Further anchor tie
rods 302 can
be omitted, since both the base-side battens 200 are connected by means of
tension straps
213, as well as further battens 200 which are arranged on the frame formwork
elements 100
(see in particular Fig. 13).
Fig. 14 shows a frame formwork system 300 which has been stacked. This means
that the
frame formwork elements 100 are not only arranged next to one another, but
also one above
the other. For coupling, in turn battens 200 are used, whereby two battens 200
are arranged
one above the other and coupled with the frame formwork elements 100. The
lower batten
200 is connected to an opposite-lying lower batten 200 by means of tension
straps 213, the
upper batten 200 is connected in a corresponding manner to an opposite-lying
upper batten
200. With the aid of the upper batten 200, the frame formwork element 100
which is placed
thereon can be positioned and held. The stacked area is vertically aligned and
supported by
means of a further push-pull prop 301.
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List of reference numerals
100 Frame formwork element
101 Edge profile
102 Frame
103 Frame inner side
104 Frame outer side
105 Reinforcing corrugation
106 Reinforcing corrugation
107 Fastening corrugation
108 Rung
109 Tie hole
110 Formwork skin
111 Edge protection for formwork skin
112 Miter
200 Batten
201 Geometry
202 Geometry
203 Reinforcing corrugation
204 Reinforcing corrugation
205 Side face
206 Side face
207 End face
208 End face
209 Cavity
210 Opening
211 Fastening means
212 Lowered area
213 Tension strap
214 Locking bolt
215 Opening
216 Head
300 Frame formwork system
301 Push-pull prop
302 Anchor tie rod
Date Recue/Date Received 2023-03-02
