Note: Descriptions are shown in the official language in which they were submitted.
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The present invention relates to a construction element
for thermal insulation in buildings, especially in pro-
jecting wall portions, comprising an elongate insulationbody formed of a thermally insulating material, and
metallic reinforcing elements protruding laterally for
anchoring purposes, said construction element being formed
as a prefabricated part.
A construction element of this type is known from German
Patent 30 05 571. This construction element includes a
thrust bearing block or abutment to bear horizontal forces.
The reinforcing elements extend in part obliquely through
the insulation body. The reinforcing elements are adapted
to bear also vertical forces. However, construction ele-
ments of this kind are unsuited when no momentum forces,
but only vertical forces are to be taken up. This applies,
for example, when the projecting wall portion is supported
by pillars at the side remote from the building. Likewise,
substantially vertical forces are involved in balcony
panels rested on three sides or two sides. Even if only
vertical forces are present~the conventional construction
element requires a thrust bearing block or abutment, be-
cause horizontal forces occur even in the case of onlyvertical loading due to the oblique extension of the
reinforcing elements interiorly of the construction ele-
ment, which horizontal forces must be taken up by the
abutment. In multi-sidedly supported balcony panels,
another drawback resides in that the transverse rods must
bear different tensile forces owing to temperature
variations within the balcony (panel). When the balcony
~panel) shrinks, additional tensile forces are produced,
whereby the balcony (panel) is slightly raised. When the
balcony (panel) expands, compressive forces result under
which the balcony (panel) is slightly lowered. Further,
in the case of balconies (balcony panels) supported on
two sides, their length is limited by the connection
through the construction element, which acts in the manner
of a clamping means. In a wall portion being supported
on pillars at the side opposite to the buildiny, the
elastic deflection thereof in the a~utments results in
extra compressive forces in addition to the mathematically
determinable compressive force, which extra compressive
forces cannot be investigated or determined mathematically.
It is therefore the object of the present invention to
provide a construction element for thermal insulation in
buildings, which does not require any abutments and in
which temperature variations do not produce any additional
stress in the reinforcing elements.
~n the construction element as outlined above, according
to the invention this object is solved in that the rein
forcing elements extend vertically interiorly of the
insulation element or body.
Below, the invention is described in greater detail by
referring to exemplary embodiments illustrated in the
Figures, wherein: -
Figure 1 is a vertical cross-sectional view of a first
embodiment of a construction element in the installed
state thereof;
Figure 2 is a vertical cross-sectional view of a second
embodiment of a construction element; and
Figure 3 is a vertical cross-sectional view of a third
embodiment of a construction element.
Figure 1 illustrates portions of a building, namely, for
example, a building wall 1, a concrete ceiling 2 and a
projecting building portion also formed of concrete, such
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as e.g. a balcony panel 3. Positioned between these
components in well~known manner is a thermally insulating
prefabricated construction element including an insulation
body 4. The longitudinal direction of this insulation
body 4 extends perpendicular to the plane of the section.
Disposed within this insulation body 4 are vertical steel
rods or bars 5, arranged with a predetermined spacing from
each other in the longitudinal direction and acting to
take up or bear the vertical forces. Owing to this arrange-
ment of the steel rods 5 serving as reinforcing elements,
no horizontal forces are produced when the vertical forces
are absorbed, such that thrust bearing blocks or abutments
are not necessary. Preferably, the projecting (cantilever)
concrete panel 3 is mounted to be suspended. In this
manner, displacements caused by temperature variations
can be compensated in a particularly efficient manner.
The ends of the steel rods 5 have joined thereto hori-
xontally extending cantilever beams 6 and 7 formed of
steel. The cantilever beam 6 extends into the concrete
ceiling 2, while the cantilever beam 7 projects into the
balcony panel 3. These cantilever beams act to bear the
cantilever forces from the concrete ceiling 2 and the
balcony panel 3, respectively. The vertical free length
of the steel rod 5 between the cantilever beams 6 and 7,
and the kind of attachment to the cantilever beams are
responsible for the maximum flexibility of the balcony.
Figures 2 and 3 illustrate construction elements which
can be produced in a particularly efficient manner. Here,
the reinforcing element comprises a bent (angled) steel
rod 8. This steel rod has its center portion passing
vertically through the insulation body 4' or 4",
respectively, while its two end portions are angled so
as to extend in the horizontal direction. In this
structure, one end portion extends into the concrete
'` '
~ 2 ~3~ ~
ceiling of the building, and the other end portion eY.tends
into the projecting balcony panel. ~he insulation body
4' of Figure 2 includes in the area o~ the horizontal
portions of the steel rod 8, depressions or recesses 9
and 10 which may be filled out with concrete. Then, the
steel rod 8 is securely embedded in concrete in the area
of the upper and lower bents. There is left a vertically
extending center portion in which the steel rod passes
freely through the insulation body 4' so as to be flexible
or movable. In the construction element shown in Figure 2,
the recesses 9 and 10 may be filled out with concrete
before the construction element is transported to the
construction site. Another alternative is to transport
the insulaticn elements with the steel rods passing there-
through to the construction site, and to fill out the
recesses 9 and 10 at the site when the adjoining components
are cast from concrete.
The insulation body 4" according to Figure 3 does not
show the discrete recesses in the area of the horizontal
portions of the steel rods 8, but is rather formed in a
corresponding manner throughout its length. Thus, it
comprises an upper and a lower vertical section which are
displaced relative to each other in the horizontal
direction. The center section joins the upper and lower
sections such that i~ upper and lower edges are inclined.
The steel rod 8 passes through the insulation body 4" with
its vertically extending part only, such that the bents
and the horizontally e~tending portions are left e~posed.
These portions are thereafter embedded in concrete during
concrete casting o~ the building ceiling or of the
balcony panel, respectively. In this way, a continuous
cantilever bed is each formed, both at the side of the
ceiling and at the side of the balcony.
