EP1486626A2 - Sealing element - Google Patents

Abstract

The rooms are constructed using concrete double wall elements (16) placed on a reinforcement layer (14) of a concrete floor plate (10). The sealing has a support (22,26) for insertion into the floor plate, and a vertical long flat joint element (24). After erection and grouting of a double wall element, the joint element seals the joint between wall and base. The support consists of several concrete steel brackets (22) connected rigidly to each other in longitudinal direction of the joint element. The joint element has a coating to prevent water circulation and aid gluing to other joint elements. The coating is butyl rubber, bitumen, synthetically-modified bitumen, a synthetically-modified coating reacting with fresh concrete, or a coating with swelling capacity.

Description

Technical field

The invention relates to sealing elements for the production of waterproof External walls of rooms embedded in water-bearing soil using concrete double wall elements to be placed on a concrete floor slab. The invention further relates to a concrete double wall element, as well as one embedded in water-bearing soil Room.

State of the art

Structures in the ground are damp in various ways or water. You have to be particularly sensitive to soil moisture, be tight against pressing and non-pressing water.

Special requirements arise when installing the outer walls Precast concrete, such as double wall concrete elements become. If several double wall elements are placed on a base plate, This creates joints at the connection points that are suitably sealed Need to become.

In a sealing process known under the catchphrase "black tub" the entire outer surface of an embedded in water-bearing soil Sealed room. For this purpose, the building is on its base and encased on its side walls with plastic sheeting and so packed waterproof. At the joints between the finished parts the plastic sheets must be carefully laid and welded to a Avoid water ingress. This process is time and labor intensive and also very expensive due to the high material consumption.

Another known solution is to use the finished base plate for the construction of the outer walls an inner and outer formwork wall set up in which concrete is poured. However, this procedure requires in addition to the formwork, a large amount of reinforcement material, to minimize the shrinkage that occurs when the concrete sets.

Presentation of the invention

This is where the invention comes in. The invention as characterized in the claims is based on the object, the disadvantages of the prior art to avoid and in particular a simple and inexpensive seal the outer walls of rooms embedded in water-bearing soil enable.

According to the invention, this object is achieved by the sealing element, the concrete double wall element, the space embedded in water-bearing soil and the method of manufacturing waterproof outer walls with solved the features of the independent claims. Training courses are Subject of the dependent claims.

According to the invention, a generic sealing element has an elevation support for integration into the concrete floor slab and one of the support beams elongated flat surface held in vertical orientation Joint element, which after setting up and pouring a Double wall element seals the wall-sole joint.

The support bracket fixes and stabilizes the position of the joint element. In particular, a tilting or other change of position of the Joint element during pouring of the double wall element with in-situ concrete avoided. As a result, the sealing element according to the invention can be a ensure controlled and reliable sealing of the wall-sole joint.

In the context of this invention, a “precast concrete part” is called “double wall element” understood that from two connected by lattice girders Reinforced concrete shells exist. After assembly, the double wall elements poured in-situ concrete, the elements themselves being formwork serve. For double wall elements there are also other names such as Cavity wall, triple wall, element wall, prefabricated wall, double-shell wall, partial prefabricated wall or two-shell prefabricated wall spread. The designation "double wall element" includes all such elements below.

According to a preferred embodiment of the invention, the elevation support comprises a plurality of rebars that run along each other the longitudinal direction of the joint element are rigidly connected. In particular the rebar can be welded to a longitudinal bar made of rebar his. This results in a lightweight and stable construction site easy to handle sealing element.

A particularly simple and inexpensive manufacture can be achieved in this way be that the rebar is made in one piece. After an advantageous Further development of the invention, the rebar has a horizontal Standing area and two essentially vertical support areas, at which they are connected to the joint element, in particular welded are.

The support bracket is preferred for laying on a reinforcement layer the concrete floor slab and for complete integration into the floor slab designed and furnished.

In an advantageous embodiment, the joint element is flat Joint plate formed with a substantially rectangular circumference. So designed Sealing element is especially for sealing the joint between one straight wall and a base plate. Around the wall-sole joint Sealing in the area of a corner joint, according to the invention Jointing element used, which is essentially by a kinked joint plate rectangular circumference is formed. In particular, the joint plate have two kinks close to each other, each about 135 °, to seal the wall-sole joint in the area of a 90 ° corner joint. For other corner angles are of course also other articulation angles. The corner angle can also be used instead of two close to each other Kinks can be bridged with just one kink or with more than two kinks.

The joint plate is preferably arranged in the elevation support in such a way that after the mounting bracket has been integrated into the base plate is integrated into the base plate with a lower vertical section, and that an upper vertical section for sealing the wall-sole joint protrudes vertically from the base plate. The lower and the upper vertical Partial areas are appropriately the same size, so that just half of the Joint plate is integrated in the concrete floor slab.

In one variant of the invention, the joint element is provided with a coating Prevention of water circulation and for gluing with joint elements other sealing elements. The joint element on the water-facing side completely coated and on the water-facing side Be partially coated in a bonding area.

The coating is, for example, a butyl rubber coating, a bitumen coating, a plastic modified bitumen coating or a plastic modified coating that reacts with fresh concrete and this creates an excellent connection (bonding) with the concrete, into consideration. Swellable coatings can also be advantageous be used. In the gluing area, the joint element can be easier Way by printing with overlapping, also coated adhesive areas other joint elements are glued. In addition, you can the overlap joints are secured with butt clamps.

• ein langgestrecktes flächiges Fugenelement, das nach dem Aufstellen und Ausgießen aneinandergrenzender Doppelwandelemente die Wand-Wand-Stoßfuge abdichtet,
• ein an dem Fugenelement angebrachtes und sich entlang der Längsrichtung und senkrecht zur Oberfläche des Fugenelements erstreckendes Sollrisselement, und
• zwei Führungsschienen zur vertikalen Befestigung an Gitterträgern der aneinandergrenzenden Doppelwandelemente, die zur Aufnahme gegenüberliegender Längskanten des Fugenelements beim Aufstellen der Doppelwandelemente ausgelegt und eingerichtet sind.

To seal the wall-wall butt joints between adjoining double wall elements, the invention contains further sealing elements. In a first variant of the invention, a sealing element for wall-wall butt joints comprises

• an elongated flat joint element that seals the wall-wall butt joint after the installation and pouring of adjacent double wall elements,
• a predetermined crack element attached to the joint element and extending along the longitudinal direction and perpendicular to the surface of the joint element, and
• two guide rails for vertical attachment to lattice girders of the adjoining double wall elements, which are designed and set up to accommodate opposite longitudinal edges of the joint element when setting up the double wall elements.

The position of the joint element becomes clear when pouring the double wall elements fixed by the guide rails. It is understood that the distance of the two guide rails and the width of the joint element on each other are coordinated to ensure a secure hold.

Alternatively, such a sealing element comprises in addition to the elongated one flat joint element and the predetermined crack element attached to it or several braced bent wire brackets, in particular rebar or Smooth steel bracket, for fixing the position of the joint element in the joint area adjoining double wall elements. In this case, the joint element not through guide rails of the double wall elements, but fixed by its bracing with one or more wire brackets.

In both variants, the predetermined crack element is advantageously designed such that it does not connect to the in-situ concrete. In particular, the predetermined crack element be provided with a plastic coating and is, for example, by a lattice mat with a shrunk-on polyethylene film is formed. The Due to the local weakening of the concrete cross-section, the crack element leads to ensure that the shrinkage cracks that form in the concrete are checked on site of the crack element occur where they are pressed against by the joint plate how non-pressing water is secured.

The joint element is used to seal the butt joints between straight walls of the sealing element expediently with a flat joint plate formed essentially rectangular circumference.

To seal corner butt joints, the joint element is advantageous by kinked joint plate with a substantially rectangular circumference educated. In particular, the joint plate can be used to seal a 90 ° corner joint two closely spaced kinks of approximately 135 ° each have, where appropriate, the predetermined crack element between the two Kinking is arranged. As with the first sealing element, come here too different kink angles or training with a different number of kinks into consideration.

As with the sealing element described above for wall-sole joints also the joint element intended for the wall-wall joint area completely coated on the water-facing side and on the water-facing side Side in a gluing area for gluing with joint elements other sealing elements may be partially coated.

Here too comes a butyl rubber coating, a bitumen coating, a plastic modified bitumen coating or plastic-modified coating that reacts with fresh concrete and thereby an excellent connection (bonding) with the concrete is considered. Swellable coatings can also be used with advantage become. The partially coated bonded area is convenient in the lower area of the joint element, so that this after insertion of the sealing element in an overlap area easily with the Joint elements of the wall-sole sealing elements can be glued.

The invention also includes a concrete double wall element with two lattice girders connected concrete shells, in which the lattice girder on opposite Sides are each provided with a vertical guide rail, around the joint element of a sealing element for sealing wall-wall butt joints of the type described.

The invention further comprises an embedded in water-bearing soil Room with a concrete floor slab and placed on the floor slab and concrete double wall elements poured with in-situ concrete. Here is in the bottom plate has a plurality of first sealing elements described first integrated to seal the wall-sole joint. The joint elements of the first sealing elements overlap each other and are in connected to this overlap area, in particular welded or glued. This can provide a reliable all-round seal of the wall-sole joint.

The wall-wall joints are particularly preferably adjacent Double wall elements with the second sealing elements described last sealed for the sealing of wall-wall butt joints. The joint elements the second sealing elements overlap on their underside the joint elements of the first sealing elements and are in the overlap area connected to these, in particular welded or glued. The joint elements the second sealing element can be used for pouring in-situ concrete thereby by double wall elements adjoining one another on lattice girders fixed guide rails or by tensioned wire brackets, in particular Reinforcing steel or smooth steel bracket, be fixed in their position.

In the room produced in this way, all joints are between the precast concrete parts or between the finished parts and the base plate optimally against pressing as sealed against non-pressing water.

• Auflegen einer Mehrzahl von oben beschriebenen ersten Abdichtelementen zum Abdichten einer Wand-Sohle-Fuge auf eine Bewehrungslage einer Betonbodenplatte, so dass die Fugenelemente einander im Stoß überlappen,
• Betonieren der Bodenplatte um den Aufständerungsträger und einen unteren vertikalen Teilbereich der Fugenelemente in die Bodenplatte einzubinden,
• Aufstellen von Doppelwandelementen mittig jeweils über dem oberen vertikalen Teilbereich der Fugenelemente, und
• Ausgießen der Doppelwandelemente mit Ortbeton.

The following steps are carried out in a method for producing water-impermeable outer walls of rooms embedded in water-bearing soil, which is not itself part of the invention:

• Placing a plurality of the first sealing elements described above for sealing a wall-floor joint on a reinforcement layer of a concrete floor slab so that the joint elements overlap in the joint,
• Concreting the floor slab in order to incorporate the support beam and a lower vertical section of the joint elements into the floor slab,
• Set up double wall elements in the middle of the upper vertical section of the joint elements, and
• Pouring the double wall elements with in-situ concrete.

The joint elements are advantageously in the overlap area with one another connected, in particular welded or glued. It is also appropriate if the mounting supports of the first sealing elements after the Place on the reinforcement layer welded, bound, or be fixed with mounting brackets.

The double wall elements are in a first variant with advantage before Set up on opposite sides with a vertical guide rail Mistake. This is preferably done at the manufacturer of the Double wall elements so that they already have integrated guide rails be delivered to the construction site. Alternatively, the guide rails only attached to the lattice girders of the double wall elements on site, in particular welded. Another alternative is the guide rails at the manufacturer of the sealing elements on the lattice girders Double wall elements welded and the lattice girders together with the welded Guide rails delivered to the precast plant. So he can Manufacturer of the sealing elements ensure that the distance of the guide rails corresponds to the width of the joint element to be inserted later.

After setting up a double wall element, a second sealing element is used of the type described above for sealing the wall-wall butt joint inserted into an exposed guide rail of the double wall element, so that the joint element of the second sealing element on it Underside of the joint element of a first sealing element overlaps. Then it is connected to it in the overlap area, in particular welded or glued.

Then another double wall element can be set up Guide rail which takes up the free longitudinal edge of the joint element. The joint element is then when the double wall elements are poured out later secured in three positions by support. In addition to welding or gluing in the overlap area with the Joint element of the first sealing element, it becomes on its longitudinal edges from the guide rails of the two adjacent double wall elements held securely in its vertical orientation.

When inserting the last double wall element of an outer wall, this can from above with a crane or similar device into the gap inserted and in a vertical position over the overlap area of the Joint elements are held by the first and second sealing element. After welding or gluing the joint elements, the double wall element lowered onto the base plate.

In a second variant, the double wall elements have no guide rails on. The position of the vertical joint elements of the second sealing elements is in this variant after the installation of the double wall elements secured by braced wire brackets. The restoring force leads the tensioned wire bracket together with the static friction of the bracket the shells of the double wall elements for a secure hold of the joint elements when pouring the double wall elements with in-situ concrete.

The vertical joint elements show due to their material thickness and construction a very high inherent rigidity, so that it only in two places (fixed below by welding or gluing and above by wire bracket) have to be and when pouring the double wall elements with in-situ concrete do not deform.

Fig. 1

eine schematische Querschnittsdarstellung einer Wand-Sohle-Fuge zwischen einer Bodenplatte und einem Doppelwandelement mit einem ersten Abdichtelement nach einem Ausführungsbeispiel der Erfindung;

Fig. 2

eine Seitenansicht des Abdichtelements von Fig. 1;

Fig. 3

eine Aufsicht auf das Abdichtelement von Fig. 1 und 2;

Fig. 4

eine Aufsicht auf eine Abwandlung des Abdichtelements der Figuren 2 und 3 zum Abdichten der Wand-Sohle-Fuge im Bereich eines 90° Eckstoßes;

Fig. 5

in (b) eine Aufsicht auf eine Wand-Wand-Fuge zwischen aneinandergrenzenden Doppelwandelementen mit einem zweiten Abdichtelement nach einem Ausführungsbeispiel der Erfindung, wobei in (a) das rechte Doppelwandelement und das Abdichtelement vor dem Einschieben in die Führungsschiene dargestellt sind;

Fig. 6

eine perspektivische Darstellung des Abdichtelements und einer der an den Doppelwandelementen angebrachten Führungsschienen von Fig. 5;

Fig. 7

eine Aufsicht auf eine Abwandlung des Abdichtelements der Figuren 5 und 6 zum Abdichten der Wand-Wand-Fuge im Bereich eines 90° Eckstoßes;

Fig. 8

eine perspektivische Ansicht eines mit verspannten Drahtbügeln stabilisierten Abdichtelements für Wand-Wand-Fugen nach einem weiteren Ausführungsbeispiel der Erfindung, in (a) von der wasserabgewandten Seite und in (b) von der wasserzugewandten Seite her gesehen;

Fig. 9

in (a) einen Drahtbügel zur Lagefixierung von Abdichtelementen für gerade Wand-Wand-Stoßfugen und in (b) einen Drahtbügel zur Lagefixierung von Abdichtelementen für Eckstoßfugen; und

Fig. 10

in (a) eine Aufsicht auf eine Wand-Wand-Fuge wie in Fig. 5, mit einem Abdichtelement nach Fig. 8 und gesichert durch den Drahtbügel der Fig. 9(a), und
in (b) eine Aufsicht auf eine Wand-Wand-Fuge im Bereich eines 90° Eckstoßes wie in Fig. 7, mit einem abgewandelten gewinkelten Abdichtelement nach Fig. 8 und gesichert durch den Drahtbügel der Fig. 9(b).

The invention will be explained in more detail below on the basis of exemplary embodiments in conjunction with the drawings. Only the elements essential for understanding the invention are shown. It shows

Fig. 1

is a schematic cross-sectional view of a wall-sole joint between a base plate and a double wall element with a first sealing element according to an embodiment of the invention;

Fig. 2

a side view of the sealing member of Fig. 1;

Fig. 3

a plan view of the sealing element of Figures 1 and 2;

Fig. 4

a top view of a modification of the sealing element of Figures 2 and 3 for sealing the wall-floor joint in the region of a 90 ° corner joint;

Fig. 5

in (b) a top view of a wall-wall joint between adjoining double wall elements with a second sealing element according to an embodiment of the invention, in (a) the right double wall element and the sealing element being shown before being inserted into the guide rail;

Fig. 6

a perspective view of the sealing element and one of the guide rails attached to the double wall elements of Fig. 5;

Fig. 7

a top view of a modification of the sealing element of Figures 5 and 6 for sealing the wall-wall joint in the region of a 90 ° corner joint;

Fig. 8

a perspective view of a stabilized with braced wire bracket sealing element for wall-wall joints according to a further embodiment of the invention, seen in (a) from the water-facing side and in (b) from the water-facing side;

Fig. 9

in (a) a wire bracket for fixing the position of sealing elements for straight wall-wall joints and in (b) a wire bracket for fixing the position of sealing elements for corner joints; and

Fig. 10

in (a) a top view of a wall-wall joint as in FIG. 5, with a sealing element according to FIG. 8 and secured by the wire bracket of FIG. 9 (a), and
in (b) a top view of a wall-wall joint in the area of a 90 ° corner joint as in FIG. 7, with a modified angled sealing element according to FIG. 8 and secured by the wire bracket of FIG. 9 (b).

Ways of Carrying Out the Invention

Figure 1 shows a schematic cross-sectional view of a wall-sole joint between a base plate 10 and a double wall element 16 with a sealing element 20 according to an embodiment of the invention. characters 2 and 3 show a sealing element 20 not additionally installed in FIG Side view and under supervision.

The sealing element 20 of the embodiment has a 2 mm thick and 250 mm wide joint plate 24, which is supported by a support bracket 22, 26 is held in a vertical orientation. For this purpose, the support bracket contains a plurality of similar rebar 22, which along the Longitudinal direction of the joint plate 24 over two spaced reinforcing steel longitudinal bars 26 are rigidly connected to each other in the foot area. In the embodiment are the rebar 22 with the longitudinal rods 26 on the Welded contact points. 2 and 3 each have four brackets 22 are shown, it is understood that depending on the dimensions of the joint plate 24 and the required stability also a smaller or larger one Number of brackets 22 can be used.

As can best be seen in FIG. 1, the reinforcing steel brackets 22 are in one piece executed and have in addition to a horizontal standing area 30 two in Main vertical support areas 32 on which they with the joint plate 24 are welded (reference numeral 28).

A plurality are used to produce a water-impermeable outer wall of sealing elements 20 before concreting the floor slab on a lower reinforcement layer 14 of the base plate 10 placed. In the embodiment are the sealing elements 20 with their two longitudinal bars 26 with the lower reinforcement layer 14 and in the area of the rebar 22 with a upper reinforcement layer 12 of the base plate 10 welded.

An angled sealing element 40 is used for the building corners, as shown in Fig. 4 in supervision. The joint plate 44 and the longitudinal bars 46 of the sealing element 40 have two close to each other Bend 45 and 47, each forming an angle ϕ of 135 °. It understands that for other corner angles to be reached also other articulation angles ϕ can be selected. The corner bracket can also be bridged with just one bend become. However, it is particularly in connection with that described below Sealing element for wall-wall corner joints with the design two kinks preferred. Just like the one in connection with the figures 1 to 3 described sealing element, the joint plate 44 of a Plurality of rebar 42 welded to it in its vertical Alignment held.

After setting up all the sealing elements 20 and 40, the base plate concreted around the support brackets and one lower vertical each Include portion 34 of the joint plates 24, 44 in the base plate 10. The upper vertical portion 36 protrudes in a secure and stable position vertically out of the base plate 10 and stands for sealing the wall-sole joint to disposal. The lower and upper sections 34 and 36 are the same size in the exemplary embodiment and each take half of the Joint sheet width.

Adjacent sealing elements 20 or 40 are with such Distance integrated in the base plate that their joint sheets 24 and 24 or 24 and 44 overlap one another and in the overlap area with one another can be welded or glued. For gluing, the A corresponding coating at least in the overlap area, for example a butyl rubber coating, bitumen coating plastic-modified bitumen coating or a plastic-modified Coating that reacts with fresh concrete and is therefore excellent Connection (bonding) with the concrete. About that swellable coatings can also be used. The lap joints can also be secured with a clamp.

After binding and welding or gluing all sealing elements 20, 40 double wall elements 16 are in the middle of each projecting upper portion 36 of the joint plates 24, 44 set up.

For sealing the wall-wall butt joints between the adjacent ones Double wall elements are provided with other types of sealing elements, which will now be described with reference to FIGS. 5 to 10.

Figure 5 (a) shows a plan view of a double wall element 50 with an inner one Shell 52 and an outer shell 54. The two concrete shells 52 and 54 are interconnected by a lattice girder 56, of which in the figure only the outer edge area is shown. On the lattice girder 56 is a vertical one Welded guide rail 66, which is essentially over the entire height of the double wall element 50 extends.

5 (a) further shows a joint plate extending in the vertical direction 62, on each of the two main surfaces of which a predetermined crack element 64 is attached is. The joint plate 62, the predetermined crack elements 64 and the guide rails 66 together form a sealing element 60.

After installation of the double wall element 50, the joint plate 62 of the sealing element 60 with a longitudinal edge in the exposed guide rail 66 inserted that there is a joint plate on its underside Sealing element 20 or 40 overlaps, and then in the overlap area can be welded to it.

After welding, a further double wall element 50 is set up, whose guide rail 66 the opposite longitudinal edge of the joint plate 62 records. This situation is shown in Fig. 5 (b). The joint sheet 62 is now fixed in its position at three points, which ensures a secure hold when Pouring the double wall elements with in-situ concrete ensures.

The joint plate 62 with the crack element 64 is together with one of the two guide rails 66 in FIG. 6 again in a perspective view shown. As can be clearly seen in FIG. 6, the predetermined crack element extends 64 along the vertical longitudinal direction and perpendicular to the surface of the joint plate 62. It is coated with a material that after the Pouring does not combine with the in-situ concrete. In the embodiment there is the predetermined crack element 64 made of two reinforcing steel grids with shrunk-on polyethylene film, those on opposite main surfaces of the joint plate 62 are welded on. The predetermined crack element 64 causes because of the local weakening of the concrete cross-section that those that form after pouring Shrinkage cracks in the concrete occur in a controlled manner at the location of the predetermined crack element 64, where through the joint plate 62 against pressing as well as non-pressing Water are secured.

In order to obtain an easily accessible welding area, the predetermined crack element, as also shown in Fig. 6, also slightly above the lower edge 68 of the joint plate 62 ends.

According to the invention, an angled one is used to seal double-wall corner joints Sealing element 70 is provided, which is shown in plan view in FIG. 7. The two abutting double wall elements 80 and 82 are on their lattice girders 86 with guide rails 76 for receiving the joint plate 72 provided. Like the joint plate described in connection with FIG. 4 of the sealing element 40, the joint plate 72 has two close to each other Bend 75 and 77 from about 135 ° each, their distance corresponds to that of the kinks 45 and 47 of the cover element 40 underneath, to simply weld the two joint plates 44 and 72 in Allow overlap area.

A predetermined crack element 74 is arranged between the two creases 75 and 77, that due to its orientation one from the outside to the inside Defined predetermined crack corner of the outer wall.

After inserting and welding all sealing elements, the Double wall elements with secure position of all joint sheets with in-situ concrete be poured out. The sealing elements 20 and 40 for the wall-sole joints and form the sealing elements 60 and 70 for the wall-wall butt joints so together a complete sealing system for double wall outer walls.

An alternative design of a sealing element for sealing Wall-to-wall butt joints will now be used in connection with FIGS. 8 to 10 explained. Figure 8 shows a perspective view of one with braced Wire clips stabilized sealing element 90 for wall-wall joints, being the sealing element 90 in FIG. 8 (a) from the water-facing side and is shown in Fig. 8 (b) seen from the water-facing side. The Sealing element 90 has a vertically extending joint plate 92 a predetermined crack element 94 attached on both sides. Outside the the water-facing side is the joint plate 92 to prevent the Complete water circulation with a bitumen coating 98 (Fig. 8 (b)). On the side facing away from the water is a lower section also provided with a bitumen coating 96 (Fig. 8 (a)), which is used for gluing of the sealing element 90 with joint plates introduced into the base plate serves.

The position of the vertical joint plate 92 in the joint area of adjacent double wall elements 50 is made by bracing bent rebar or Smooth steel bracket 100 secured. Due to the chosen material thickness and its Construction, the sealing element 90 has a very high inherent rigidity on. It is therefore sufficient to glue the sealing element 90 in the lower region 96 or weld and fix in the upper area with wire bracket 100, to ensure a stable when pouring the double wall element with in-situ concrete To ensure the position of the joint plate 92 without deformation.

In the embodiment, two of the ones shown in Fig. 9 (a) are shown in supervision Wire brackets 100 pressed together at their L-shaped legs 102 and with the protuberance 104, as shown in FIG. 10 (a), over the joint plate 92 pushed. The joint plate 92 is the same as the joint plate in Fig. 10 (a) 114 of Fig. 10 (b) shown in phantom to make it clear of the wire brackets 100 or 110 to take off. Because the untensioned lateral extension of the bracket 100 slightly larger than the distance between the shells of the double wall elements 50 is selected, the joint plate 92 when pouring the double wall elements 50 with in-situ concrete by bracing with the two wire brackets 100 kept stable.

A wire bracket can be used to stabilize sealing elements for corner joints 110, as shown in plan in Fig. 9 (b). In the relaxed Condition, the two straight legs 112 intersect in the room below an angle of about 50 ° without being connected. Will now the legs 112 are pulled apart while increasing the crossing angle and the bracket 110 thus strained, as shown in Fig. 10 (b), over a angled joint plate 114 pushed, so creates the restoring force of the Leg 112 a sufficient tension of the wire bracket 110 to the Joint plate 114 during pouring of the double wall elements 80, 82 stabilize with in-situ concrete.

It goes without saying that in the context of the invention, in addition to that in FIGS. 9 (a) and 9 (b) examples of shapes shown for the wire brackets 100 and 110 also others Temple designs come into consideration, which fix a position by bracing allow the joint elements.

Claims (31)

Sealing element for the production of water-impermeable outer walls of rooms embedded in water-bearing soil using concrete double wall elements (16) to be set up on a concrete floor slab (10) an elevation support (22, 26) for integration into the concrete floor slab (10) and an elongated flat joint element (24) held in vertical alignment by the elevation support (22, 26) and which seals the wall-sole joint after the installation and pouring of a double wall element (16). Sealing element according to claim 1, characterized in that the elevation support comprises a plurality of reinforcing steel brackets (22) which are rigidly connected to one another along the longitudinal direction of the joint element (24). Sealing element according to claim 2, characterized in that the rebar (22) are integrally formed. Sealing element according to claim 2 or 3, characterized in that the reinforcing steel brackets (22) have a horizontal standing area (30) and two substantially vertical support areas (32), at which they are connected to the joint element (24), in particular welded. Sealing element according to one of the preceding claims, characterized in that the elevation support (22, 26) is designed and set up for laying on a reinforcement layer (14) of the concrete floor slab (10) and for complete integration into the floor slab (10). Sealing element according to one of the preceding claims, characterized in that the joint element is formed by a flat joint plate (24) with a substantially rectangular circumference. Sealing element according to one of claims 1 to 5, characterized in that the joint element is formed by a bent joint plate (44) with a substantially rectangular circumference, for sealing the wall-sole joint in the area of a corner joint. Sealing element according to claim 7, characterized in that the joint plate (44) has two closely spaced bends (45, 47) each of approximately 135 ° in order to seal the wall-sole joint in the region of a 90 ° corner joint. Sealing element according to one of Claims 6 to 8, characterized in that the joint plate (24; 44) is arranged in the elevation support in such a way that after the elevation support (22, 26) has been integrated into the base plate, it has a lower vertical partial region (34). is integrated into the base plate (10), and that an upper vertical section (36) for sealing the wall-sole joint protrudes vertically from the base plate (10). Sealing element according to claim 9, characterized in that the lower and the upper vertical partial area (34, 36) are of the same size. Sealing element according to one of the preceding claims, characterized in that the joint element (24; 44) is provided with a coating for preventing water circulation and for gluing with joint elements of other sealing elements. Sealing element according to claim 11, characterized in that the joint element (24; 44) is provided with a butyl rubber coating, a bitumen coating, a plastic-modified bitumen coating, a plastic-modified coating which controls fresh concrete, or a swellable coating. Sealing element for the production of water-impermeable outer walls of rooms embedded in water-bearing soil using concrete double wall elements (50) with lattice girders (56) to be set up on a concrete floor slab (10) an elongated flat joint element (62) which seals the wall-wall butt joint after the installation and pouring of adjacent double wall elements (50), a predetermined crack element (64) attached to the joint element (62) and extending along the longitudinal direction and perpendicular to the surface of the joint element (62), and two guide rails (66) for vertical attachment to the lattice girders (56) of the adjoining double wall elements (50), which are designed and set up to accommodate opposite longitudinal edges of the joint element (62) when the double wall elements (50) are set up. Sealing element for the production of water-impermeable outer walls of rooms embedded in water-bearing soil using concrete double wall elements (50) to be set up on a concrete floor slab (10) an elongated flat joint element (92) which seals the wall-wall butt joint after the installation and pouring of adjacent double wall elements (50), a predetermined crack element (94) attached to the joint element (92) and extending along the longitudinal direction and perpendicular to the surface of the joint element (92), and one or more wire brackets (100; 110), which can be bent and braced, in particular rebar or smooth steel brackets, for fixing the position of the joint element (92) in the joint region of adjoining double wall elements (50). Sealing element according to claim 14, characterized in that the joint element (92) is fully coated (98) on one side. Sealing element according to one of claims 13 to 15, characterized in that the predetermined crack element (64; 94) is attached on both sides of the joint element (62; 92). Sealing element according to one of claims 13 to 16, characterized in that the predetermined crack element (64; 94) is provided with a plastic coating. Sealing element according to one of claims 13 to 17, characterized in that the joint element is formed by a flat joint plate (62; 92) with a substantially rectangular circumference. Sealing element according to one of claims 13 to 18, characterized in that the joint element for sealing a corner joint is formed by a bent joint plate (72; 114) with a substantially rectangular circumference. Sealing element according to claim 19, characterized in that the joint plate (72; 114) for sealing a 90 ° corner joint has two closely spaced kinks (75, 77) each of approximately 135 °, the predetermined crack element (74) possibly between the two kinks is arranged. Sealing element according to one of claims 13 to 20, characterized in that the joint element (92) in the outer region of the side facing the water is fully coated (98) and on the side facing away from the water in a lower adhesive region for gluing the sealing element with a in a concrete floor slab Joint element is partially coated (96). Sealing element according to claim 21, characterized in that the joint element (92) is provided with a butyl rubber coating, a bitumen coating, a plastic-modified bitumen coating, a plastic-modified coating which controls fresh concrete or a swellable coating. Concrete double wall element (50; 80, 82) with two concrete shells (52, 54) connected by lattice girders (56; 86), characterized in that the lattice girder (56; 86) for receiving the joint element (62; 72) of a sealing element ( 60; 70) according to claim 13 or according to a claim referring back to claim 13 is provided on opposite sides in each case with a vertical guide rail (66; 76). Space embedded in water-bearing soil with a concrete floor slab (10) and concrete double wall elements (16; 50; 80, 82) set up on the floor slab and poured with in-situ concrete, characterized in that a plurality of first sealing elements (20 ; 40) according to one of claims 1 to 12, the joint elements (24; 44) of which overlap each other in the joint and are connected to one another in the overlap region, in particular are welded or glued. Space according to Claim 24, characterized in that the wall-wall joints of adjoining double wall elements (50; 80, 82) are sealed with second sealing elements (60; 70; 90) according to one of Claims 13 to 22, the joint elements (62; 72; 92) of the second sealing elements (60; 70; 90) overlap on their underside the joint elements (24; 44) of the first sealing elements (20; 40) and are connected to them, in particular welded or glued, in the overlap area. Space according to claim 25, characterized in that the joint elements (62; 72) of the second sealing elements (60; 70) are fixed in their position by guide rails (66) fastened to lattice girders (56) of adjacent double wall elements (50). Space according to claim 25, characterized in that the joint elements (92) of the second sealing elements (90) are fixed in their position by braced wire brackets (100; 110), in particular reinforcing steel or smooth steel brackets. Process for the production of water-impermeable outer walls of rooms embedded in water-bearing soil, with the following steps: Placing a plurality of first sealing elements according to one of claims 1 to 12 on a reinforcement layer of a concrete floor slab so that the joint elements overlap in the joint, Concreting the floor slab in order to incorporate the support beam and a lower vertical section of the joint elements into the floor slab, Set up double wall elements in the middle of the upper vertical section of the joint elements, and Pouring the double wall elements with in-situ concrete. Method according to claim 28, characterized in that the joint elements are connected to one another in the overlap region, in particular are welded or glued. A method according to claim 28 or 29, characterized in that the mounting supports of the first sealing elements are welded or bonded to the reinforcement layer after being placed on the reinforcement layer. Method according to one of claims 28 to 30, characterized in that the double wall elements are each provided with a vertical guide rail before being set up on opposite sides, that after the installation of a double wall element in each case the joint element of a second sealing element according to one of claims 13 to 22 Exposed guide rail of the double wall element is inserted such that the joint element of the second sealing element overlaps the joint element of a first sealing element on its underside, and that it is connected, in particular welded or glued, to the latter in the overlap region.

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