EP3118384B1 - Insulating shell composite with two insulating shells and ring beam with the insulating shell composite - Google Patents

Description

The invention relates to a dam shells composite with two insulating shells and a ring anchor with the Dämmschalonverbund.

In a building whose outer wall is formed by a masonry and in particular has a pitched roof, the masonry is provided above with a ring anchor. The pitched roof rests on the ring anchor, whereby the masonry via the ring anchor absorbs the horizontal loads caused by the pitched roof. In addition, the ring anchor forms a Reinungsumfassung in the outer wall. Thus, the ring anchor is an important component in building statics.

Conventionally, the ring anchor is made by double-sided shuttering or the use of U-shells. The formwork involves a considerable amount of material and time. Furthermore, the conventional ring anchors are not optimal in terms of thermal insulation properties, since often set cold bridges. In addition, the U-shells have the disadvantage that the residual cross section for the insertion of reinforcements is very limited.

DE 34 13 388 A1 discloses a Dämmschalenverbund according to the preamble of claim 1.

The object of the invention is to provide a Dämmschalenverbund with two insulating shells and a ring anchor with the Dämmschalenverbund, the processing is simple, fast and inexpensive and good thermal insulation of the masonry isL is achieved.

The dam shells composite according to the invention comprises two insulating shells for a ring anchor masonry, each having an insulating plate, which is adapted to cover a concrete core of the ring anchor, wherein the concrete of the concrete core can be cast on the inside of the insulation board and the Insulation plate on its inside has at least one recess which is formed by a cavity having an opening through which the cavity is accessible from outside the insulating panel for the liquid concrete during casting of the concrete core, wherein the cavity with respect to the opening in the insulation board itself extends so that between the cavity and the inside of at least one projection is formed from the Dämmstoffplattenmaterial through which an undercut in the insulation plate is formed so that the insulation board of the hardened in the cavity concrete projection of the concrete core is positively fixed by this, wherein one of at least one recess is a dovetail groove, so that the projections in the cross section perpendicular to the insulation plate on its side facing the opening have an angle smaller than 90 °, whereby at the cavity of the dovetail groove side facing the projection, the undercut is formed, wherein the insulating shells are arranged parallel and spaced from each other, so that the insides of the insulating panels face each other and corresponds to the extent of Dämmschalenverbunds perpendicular to the insulating shells of the strength of the masonry, wherein the space bounded by the insides of the insulating panels with the space is fillable, so that the concrete core formed by the concrete core is flanked by the insulating shells, wherein the Dämmschalenverbund has at least one C-shaped bracket having two legs and a central portion which is disposed between the legs, wherein the one leg with the one the two insulating shells is engaged and the other leg is engaged with the other of the two dam shells and the central portion bridges the space bounded by the insides (8) of the insulating panels, so that the insulating shells are fixed to the bracket relative to each other, wherein the in Intervention are the Leg is arranged with the insulating panels in these for each of the legs at least one engagement groove, characterized in that the respective insulating plate has on its side facing away from the inside a cover plate having webs on its inside, the form-fitting in accordance with negative engagement with the webs formed rectangular grooves in the respective insulating plate positively engage, wherein the engagement grooves are provided between the dovetail and the Rechtecknuten in the insulating panels, wherein in the respective insulating panels continuations of the engagement grooves are introduced for the central portion, so that the bracket completely in the insulating shells sunk.

The ring anchor according to the invention comprises the Dämmschalenverbund and the concrete core, which is formed by the concrete, which is poured into the space bounded by the insides of the insulating panels space.

Both the insulation shell and the dam shell composite can be produced in advance in the factory and thus be available as a ready-to-install product on a construction site. As a result, the processing of the insulating shell and the Dämmschalenverbunds and the production of the ring anchor with the Dammschalenverbund are simple, fast and inexpensive. It is about as in conventional solutions in the production of the ring anchor no formwork necessary, thereby consuming casking and stripping, the complex handling of the formwork such as cleaning and transport of the formwork can be omitted. Furthermore, the disadvantageous for the masonry fixation by Schnalanker is not necessary. By providing the insulation boards a high degree of thermal insulation is achieved by the insulating shell, whereby any thermal bridges in the ring anchor can be avoided. According to the choice of the material of the insulation board, its heat insulating properties and strength can be determined. Due to the high degree of thermal insulation of the insulation board with appropriate choice of material, the insulation board can be made thinner than conventional brick elements, so that the insulation shell composite has up to 30% larger space for the concrete core than conventional brick elements.

One of the at least one recess is according to the invention a dovetail groove, so that the projections in cross-section perpendicular to the insulating plate facing away from the opening Side have an angle smaller than 90 °, whereby on the side facing away from the cavity of the dovetail groove side of the projection, the undercut is formed. In this dovetail groove of the liquid concrete is well and completely penetrated, with the hardened concrete projection unwanted cavities in the dovetail groove omitted. Due to the symmetrical design of the cross section of the dovetail groove two projections and thus two undercuts are formed on it, whereby the positive fixing of the insulating plate is stable on the concrete core. In addition, the dovetail groove in the insulation board, for example, by milling easy and inexpensive to produce.

The insulation board material is preferably a foamed plastic. The foamed plastic is particularly preferably dimensionally stable, profiled plastic Neopor® WLG 032.

According to the invention, the insulating shell has a cover plate which is fastened to the outer side facing away from the inside of the insulating material panel and essentially covers it. The insulation board is preferably made of brick material, so that when the masonry of bricks is built, the surface characteristics of the masonry with the ring anchor is homogeneous. As a result, the cover plate forms a homogeneous plaster base together with the masonry, whereby an optical perceptibility of the insulating shell is avoided on plaster. The fact that the cold bridges are prevented by means of the insulation board and thus the heat insulation characteristics of the Dämmschalenverbunds equal or at least similar to the masonry, omit inhomogeneous moisture on the plaster surface, such that moisture rests against the plaster on Dämmschalenverbund, the plaster on masonry still as appears dry.

The Dämmschalenverbund has according to the invention at least one C-shaped bracket, which has two legs and a central portion which is arranged between the legs, wherein the one leg is engaged with the one of the two insulating shells and the other leg is engaged with the other of the two insulating shells and the center section overshadows the space bounding the insides of the insulating panels, so that the insulating shells are fixed to the bracket relative to each other , By providing the bracket, the insulating shells are kept stable at a distance from each other, whereby the dam shells composite is easy to handle when installing. The middle section of the bracket is dimensioned such that the outer sides of the insulating shells are aligned with the installed Dämmschalenverbund with the inside and / or outside of the masonry. Thus, the Dammschalenverbund is preassembled according to the choice of the bracket with the respective center section for masonry thicknesses in 300 mm, 365 mm, 425 mm and 490 mm factory, so that needs to be set on the construction site of Dammschalenverbund only on the masonry intended for him.

According to the invention, at least one engagement groove is arranged in each of the legs for engaging the legs with the insulation boards in engagement therewith. In this case, it is preferable for the number of engagement grooves in the insulation panels to be greater than the number of stirrups, so that the stirrups can optionally be displaced into the corresponding engagement grooves. As a result, the brackets can be placed on the construction site in accordance with the local prevailing space needs in the appropriate appropriate engagement grooves. TsL about the Dämmschalenverbund gable side to adapt to the sloping roof by metal removal, the bracket can be removed from this area, so that when editing the Dämmschalenverbunds only material of the insulating shell and possibly the cover plate is removed. A collision of, for example, a legend when removing the material from the dam cup composite with one of the bracket is hereby impossible.

Further, it is preferred that the central portion of the at least one bracket is arranged at the edge of the space bounded by the inner sides and the Dämmschalenverbund at least one spacer to hold at a distance of a reinforcement of the concrete core from the central portion, wherein the spacer is in engagement with the central portion. When installing the Dämmschalenverbunds this is set on the masonry that the middle portions of the bracket below, ie masonry side, are arranged. By means of the spacers a Berührkontakt the armor is prevented with the middle portions of the bracket, whereby the contacting by adjusting the tendency to corrosion of the reinforcement is prevented. Further, the spacers are engaged with the middle portions of the stirrups so that their position is set toward the masonry. As a result, any displacement of the spacers during the pouring of liquid concrete into the interior of the insulating shell composite is prevented.

It is also conceivable that the ring anchor is a pillar of masonry. The column is preferably arranged vertically. For the ring anchor as the column all the above features apply.

• Figur 1 einen Querschnitt durch ein Mauerwerk mit einer bevorzugten Ausführungsform des erfindungsgemäßen Ringankers,
• Figur 2 eine Seitenansicht des Dämmschalenverbunds aus Figur 1,
• Figur 3 eine Draufsicht des Dämmschalenverbunds aus Figur 1 und
• Figur 4 eine Explosionszeichnung des Dämmschalenverbunds aus Figur 1.

In the following the invention will be explained with reference to the attached schematic drawings. Show it:

• FIG. 1 a cross section through a masonry with a preferred embodiment of the ring anchor according to the invention,
• FIG. 2 a side view of the Dämmschalenverbunds FIG. 1 .
• FIG. 3 a plan view of the Dämmschalenverbunds FIG. 1 and
• FIG. 4 an exploded view of the Dämmschalenverbunds FIG. 1 ,

As can be seen from the figures, a ring anchor 1 has a Dämmschalenverbund 2. The Dämmschalenverbund 2 is grown on a masonry 3, wherein between the masonry 3 and the Dämmschalenverbund 2 a cement joint 4 is provided.

The Dämmschalenverbund 2, an inner Dämmschale 5 and an outer Dämmschale 6, wherein the inner Dämmschale 5 is aligned with the masonry inside and the outer Dämmschale 6 is aligned with the outer masonry side. Each of the insulating shells 5, 6 has an insulating plate 7, which is made of a dimensionally stable profiled plastic Neopor® WLG 032. The insulating panels 7 are arranged vertically standing on the masonry 3 at a distance from each other, with those sides of the insulating panels 7, which are assigned to the respective other insulating panel 6, 5, the insides 8. At its side facing away from the inside 8 of the insulating panel 7, the insulating plate 7 has a cover plate 9.

The masonry 3 is formed of bricks, wherein the cover plate 9 is made of the same or similar in terms of haptic properties material as the masonry 3. It is conceivable that on the outside of the cover plate 9 grooves are provided for the better adhesion of plaster. On its inner side, the cover plate 9 webs 10, which engage positively in accordance with negative to the webs 10 formed rectangular grooves 11 in the insulating plate 7 positively.

On the inside 8 of the insulating panels 7 dovetail grooves 12 are provided, wherein the dovetail grooves 12 extend horizontally and a Schwalbenchchwanznut 12 is disposed above the other. The Schwalbenschwanznut 12 is a recess on the inside 8 of the insulating plate 7, wherein the dovetail groove 12 has a trapezoidal cavity 14 which is accessible through an opening 13 from the outside. Due to the trapezoidal shape of the cavity 14, two mutually facing projections 15 are formed in the insulating plate 7, between which the opening 13 is located. At which the inside 8 side facing away from the projections 15 isL each formed an undercut 16 of the dovetail groove 12.

The space between the inner insulating shell 5 and the outer insulating shell 6 is filled with concrete, whereby a concrete core 17 is formed, in which a reinforcement 18 is attached. When casting the concrete core 17, liquid concrete is poured between the inner insulating shell 5 and the outer insulating shell 6, wherein the liquid concrete penetrates through the opening 13 into the cavity 14. The opening 13, the cavity 14 and the shape of the projections 15 are dimensioned such that the liquid concrete completely fills the cavity 14. It is conceivable, by shaking and / or stirring the liquid concrete, to facilitate its penetration into the cavity 14. After curing of the concrete, the concrete core 17 forms, which has a concrete projection 19 extending into the cavity 14. The concrete projection 19 has the negative shape of the cavity 14, which is formed by the undercuts 16 a positive connection of the insulation board 7 to the concrete core 17.

The Dämmschalenverbund 2 has three brackets 20 which are arranged at equal intervals to each other. Each of the brackets 20 has a C-shape and has a first leg 23, a second leg 24 and between the legs 23, 24 a central portion. Each of the brackets 20 is made of a flat band, wherein the flat band is parallel to the axis of curvature of the bracket 20 thinner than perpendicular to the axis of curvature. Between the dovetail grooves 12 and the rectangular grooves 11 engagement grooves 21, 22 are provided in the insulation panels 7, wherein the first leg 23 engages in the engagement groove of the inner Dämmschale 5 and the second leg 24 in the engagement groove of the outer Dämmschale 6. For the central portion 25 6 continuations of the engagement grooves 21, 22 are introduced into the insulation boards 5, so that the bracket 20 are completely submerged in the insulating shells 5, 6.

At the factory, the insulating shell 2 is preassembled, the inner insulating shell 5 and the outer insulating shell 6 are fixed to each other from the brackets 20 delivered to a construction site. On the masonry 3, the cement joint 4 is formed, wherein the Dammschalenverbund 2 is set on the masonry so that the middle portions 25 are located below directly on the cement joint 4. The MittelabschnitLe 25 are chosen in their length such that the cover plates 9 of the insulating shells 5, 6 each aligned with the masonry 3. About the middle portions 25 spacers 26 are set. The spacers 26 are C-shaped with spacer feet 27, so that the spacers 26 stand with their spacer feet 27 on the cement joint 4 and the middle sections 25 are bridged by the spacers 26. Then, the reinforcement 18 is placed on the spacers 26. In the following, liquid concrete is poured between the insulating shells 5, 6, wherein the penetration of the liquid concrete into the dovetail grooves 12 can be accelerated by, for example, shaking. After the concrete has hardened, the ring anchor 1 is completed.

It is conceivable that prior to pouring the concrete, the insulating shells 5, 6 must be tailored, for example in the area of the gable of a building to adapt the Dämmschalenverbunds 2 to a roof pitch 28. The removal of the material of the insulating panels 7 and the cover plates 9, for example, with the help a legend be made. So that when saying a collision of the legend is suppressed with one of the bracket 20, the number of engagement grooves 21, 22 is higher than the number of brackets 20. According to the preferred embodiment, between each two adjacent brackets 20, a further engagement groove is provided. So is for the in FIG. 3 The leftmost bracket 20 next to the first engagement groove 21, in which the bracket 20 is inserted, a second engagement groove 22 is provided. When producing the ring anchor 1 according to the construction project material from Dämmschalenverbund 2 along in FIG. 2 shown line 28 material for the sloping roof to be removed by legends. According to a standard, the dam shells composite 2 has been delivered to the site such that in the first engagement groove 21, one of the bracket 20 is inserted, whereas the second engagement groove 22 includes none of the bracket 20. Due to the fact that the line 28 in FIG. 2 the first engaging groove 21 crosses, is the Dämmschalenverbund 2 of the bracket 20 taken from the first engagement groove 21 and instead inserted into the second engagement groove 22. As a result, the stability of the Dämmschalenverbunds 20 is achieved with the three brackets 20, wherein when sawing along the line 28 in FIG. 2 about a collision with one of the bracket 20 is prevented.

LIST OF REFERENCE NUMBERS

1

ring beam

2

Dam shell composite

3

masonry

4

Zomentfuge

5

inner insulating shell

6

outer dam shell

7

Dämmstottplatte

8th

inside

9

cover

10

web

11

rectangular groove

12

dovetail

13

opening

14

cavity

15

head Start

16

undercut

17

concrete core

18

reinforcement

19

Betonvonsprung

20

hanger

21

first engagement groove

22

second engagement groove

23

first leg

24

second leg

25

midsection

26

spacer

27

Abstandshalterfuß

28

sloping roof

Claims (6)

1. Insulating shell composite with two insulating shells for a ring beam (1) of a masonry (3), each having an insulating board (7), which is arranged to cover a concrete core (17) of the ring beam (1), wherein the concrete of the concrete core (17) being cast-to onto the inner side (8) of the insulating board (7), and the insulating board (7) having on its inner side (8) at least one recess (12) which is formed by a cavity (14) with an opening (13), through which the cavity (14) is accessible from outside the insulating board (7) for the liquid concrete when casting the concrete core (17), wherein the cavity (14) extends with respect to the opening (13) in the insulating board (7), such that at least one projection (15) is formed by the insulating board material between the cavity (14) and the inner side (8), through which projection an undercut (16) is formed in the insulating board (7), so that the insulating board (7) can be fixed in a form-fitting manner by the concrete projection (19) of the concrete core (17), which concrete projection (19) has hardened in the cavity (14), wherein one of the at least one recess is a dovetail groove (12), so that the projections (15) have an angle of less than 90° in cross-section perpendicular to the insulating board (7) on their side facing the opening (13), whereby the undercut (16) is formed on the side of the projection (15) facing the cavity (14) of the dovetail groove (12), wherein the insulating shells (5, 6) being arranged parallel and at a distance from one another, so that the inner sides (8) of the insulating boards (7) face one another and the extension of the insulating shell composite (2) perpendicular to the insulating shells (5; 6) corresponds to the thickness of the masonry (3), wherein the space defined by the inner sides (8) of the insulating boards (7) being fillable with the concrete, so that the concrete core (17) formed by the concrete is flanked by the insulating shells (5, 6), wherein the insulating shell composite (2) comprises at least one C-shaped frame (20) which has two limbs (23, 24) and a middle section (25) which is arranged between the limbs (23, 24), wherein one limb (23) is engaged with one of the two insulating shells (5) and the other limb (24) is engaged with the other of the two insulating shells (6), and the middle section (25) bridges the space defined by the inner sides (8) of the insulating boards (7), so that the insulating shells (5, 6) are fixed relative to one another by the frame (20), wherein for the limbs (23, 24) being in engagement with the insulating boards (7), at least one engagement groove (21, 22) is arranged in the insulating boards (7) for each of the limbs (23, 24), characterized in that the respective insulating board (7) has a cover plate (9) on its side facing away from the inner side (8), the cover plate (9) has bars (10) on its inner side which engage in a form-fitting manner in rectangular grooves (11) formed in a correspondingly negative manner with respect to the bars (10) in the respective insulating board (7), wherein the engagement grooves (21, 22) are provided between the dovetail grooves (12) and the rectangular grooves (11) in the insulating boards (7), wherein extensions of the engagement grooves (21, 22) for the middle section (25) are introduced into the respective insulating boards (7), so that the frames (20) are completely recessed in the insulating shells (5, 6).
2. Insulating shell composite according to claim 1, wherein the insulating board material is a foamed plastic.
3. Insulating shell composite according to one of claims 1 to 2, wherein the cover plate (9) is arranged at the outer side facing away from the inner side (8) of the insulating board (7) and substantially covers the outer side.
4. Insulating shell composite according to one of claims 1 to 3, wherein in each of the insulating boards (7) the number of engagement grooves (21, 22) is greater than the number of frames (20), so that the frames (20) can optionally be positioned into the corresponding engagement grooves (21, 22).
5. Insulating shell composite according to one of claims 1 to 4, wherein the middle section (25) of the at least one frame (20) is arranged at the edge of the space defined by the inner sides (8) and the insulating shell composite (2) has at least one spacer (26) for holding a reinforcement (18) of the concrete core (17) at a distance from the middle section (25), wherein the spacer (26) engages the middle section (25).
6. Ring beam having an insulating shell composite (2) according to one of claims 1 to 4 and the concrete core (17) formed by the concrete cast into the space defined by the inner sides (8) of the insulating boards (7).

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