EP3473773B1 - Device for retaining water and wall element for use in a device for retaining water - Google Patents

Description

The invention relates to a device for retaining water.

Mobile bulkhead systems are used in various areas today. For example, protective walls are being built to protect inhabited land from the water masses in the event of an impending flood from rivers that carry floods. Mobile protective wall systems are only required temporarily and must be designed to be assembled and disassembled with as little effort as possible. Nevertheless, the protective wall systems have to withstand great forces, especially when used as flood protection.

A removable protective wall system for flood protection with a plurality of wall elements and a foundation, the wall elements having at least on one side a fastening profile for fastening in the foundation, is from the DE 10 2004 016 481 A1 known. In this protective wall system, adjacent wall elements are arranged in a zigzag pattern. The angle enclosed between all adjacent wall elements is the same here. Since the wall elements of the protective wall are not arranged in alignment with one another but are arranged in different vertical planes, the surface pressure which acts on the wall elements through the water is not exclusively caused by a reaction element in the foot area of the wall elements, but partly supported by the neighboring wall elements by a reaction force whose line of action runs within the wall plane. In particular, all wall elements are of the same design, so that a regular zigzag pattern can be formed.

The disadvantage of this removable protective wall system is that the wall elements interact with a foundation. As a result, the bulkhead system is not suitable for being installed anywhere. It can only be used in connection with the foundation. Because of the storage of the wall elements in the foundation, a special profiling of the respective wall element and the foundation interacting with it is required. The foundation thus has a profile receptacle corresponding to the fastening profile of the wall element. This fastening profile is an angled strip of material from the wall element. In addition, the profile holder accommodates a sealing cord in order to achieve a sufficient seal between the wall element and the foundation. This overall structure is therefore also structurally very complex.

In the product information Steinhardt GmbH, "Steinhardt HYDROSWIZZ / protective wall in a zigzag", status: 03/14 an emergency flood protection wall with floor seal is described. In this case, individual wall elements are screwed to a connecting element arranged between them and are positioned in a zigzag arrangement. The wall elements and the connecting elements are sealed to the floor by a seal. This flood protection wall is weighted from above, for example by laying a screed on top of the flood protection wall and positioning sandbags or block stones on it.

The removable bulkhead system according to the DE 10 2004 016 481 A1 is also described at www.swizz-schutzwand.com , there under "Mobile protective wall - construction / assembly and dismantling / transport - storage". That with this removable Protective wall system, which has the foundation for the wall elements, wall element used, is designed according to the features of the preamble of claim 1.

The object of the present invention is to develop a device for retaining water, which has the features of the preamble of claim 1, in such a way that it is structurally particularly simple and is suitable for the location-independent creation of the device for retaining water.

The object is achieved by a device which is designed in accordance with the features of patent claim 1.

The device serves to retain water. Here, not only is a flood protection wall considered, but also other uses, in particular a water basin. In the case of this water basin, the bottom of the basin is formed by a floor, thus a subsoil, for example a horizontal tar blanket, and the surrounding, thus closed wall of the water basin is formed by the individual circumferentially arranged wall elements which are connected to one another and sealed to the ground. Such a water basin represents, for example, a storage basin for extinguishing water.

The device has several wall elements.

The respective wall element is formed in one piece and has a flat, rectangular main section with a first side, a second side arranged parallel to the first side, a third side arranged perpendicular to the first side and a fourth side arranged parallel to the third side. Furthermore, the wall element has a first, flat bearing section, which is connected to the main section in the region of the first side over its length and is arranged perpendicular to the main section. The second bearing section is arranged opposite the first bearing section with respect to the main section. The wall element has a flat connecting section which is connected to the main section in the region of the third side along its length and is arranged inclined to the plane of the main section. The connecting section is provided with a plurality of connecting holes which are arranged in the longitudinal direction of the connecting section and penetrate it. The main section has in the region of the fourth side the number of connection holes of the connection section corresponding connection holes, which are arranged in the longitudinal extension of the fourth side. The surface of the first and second bearing sections facing the main section is a contact surface for fastening means for connecting the wall element to the floor. The surface of the first and second bearing sections facing away from the main section is a bearing surface for a seal to be arranged between the respective bearing surface and the floor.

Because of the design of the wall element with the first bearing section and the second bearing section, the wall element can be positioned either with the first bearing section facing the floor or with the second bearing section facing the floor. Because of this design, a zigzag arrangement of the wall elements or a non-zigzag arrangement of the wall elements can be produced by lining up, thus fastening wall elements to one another. This depends on the purpose of the water retention device.

Since in the wall element the surface of the first and second bearing sections facing the main section constitutes a contact surface for fastening means for connecting the wall element to the floor, it is not necessary to provide a foundation in the floor with which the respective wall element interacts. Rather, the respective wall element can be positioned anywhere, because it is only necessary at the respective installation site of the wall element or the device formed from the wall elements for retaining water, the fastening means in contact with the contact surface of the respective bearing section bring and connect the fastener to the floor. Because of this design, the respective wall element can be sealed off from the floor much more easily than with a solution in which a wall element interacts with the foundation with the interposition of a sealing element. In the case of the wall element according to the invention, the surface of the first and second bearing sections facing away from the main section is a bearing surface for a seal to be arranged between the respective bearing surface and the floor.

Setting up the respective wall element is thus very simple: it is only necessary to position the seal in the region of the end of the wall element facing the floor, in particular to connect the seal to the wall element and then the wall element in the region of the bearing section assigned to the floor by means of the fastening means connect to the ground. In particular, screws or nails are used for this purpose, if necessary with an additional special design of the respective fastening means. The respective bearing section is preferably provided with connecting holes arranged in pairs. If a screw or nail cannot be placed in the floor through a hole in the pair due to a difficult surface, the second hole of the pair is still available.

According to an advantageous development of the invention, it is provided that the wall element consists of metal. In particular, the wall element is formed from sheet metal. It is preferably a galvanized sheet.

The wall element can be produced in a particularly simple manner from a flat sheet metal that is folded several times, namely along two parallel lines to form the two bearing sections, which are then parallel to one another but oppositely directed with respect to the main section produced here. A further, third fold takes place in the area of the connecting section, which is arranged inclined to the plane of the main section. In particular, the connecting section forms an angle of 120 with the main section up to 150 °, preferably 130 to 140 °, in particular 135 °. Because the planar connecting section is inclined to the planar main section, two adjacent wall elements cannot be arranged in one plane, but are at an angle. This is the prerequisite for the formation of the zigzag arrangement of the wall elements to form the device for retaining water.

It is provided that the contact surface for fastening means serves to make contact by means of claws, at least in relation to the longitudinal extent of the respective bearing section, in the two opposite end regions of the bearing section, the claws each having at least one receptacle for a screw or a nail. With this design of the fastener, the nails or screws also represent the connection to the floor, are thus driven into the floor and screwed to the floor. However, it is not necessary for the screws or nails to penetrate connection holes in the bearing sections. Instead, the claws reach behind the bearing sections of the wall elements facing the floor and contact the contact surfaces of the bearing sections. The respective wall element is thus gripped by the claws in the area of the bearing section facing the floor and the bearing section is braced against the floor by means of this.

Regarding the connection of adjacent wall elements to one another, it is considered to be particularly preferred if adjacent connecting holes of the connecting section are at the same distance from one another in relation to the longitudinal extent of the connecting section, and adjacent connecting holes of the main section are at the same distance from one another with respect to the longitudinal extent of the fourth side of the main section , the distances between adjacent connection holes between the main section and the connection section being the same, and the distances between the connection holes closest to the extension of the first side of the main section and the main section and connection section being the same. This design makes it easy to connect two wall elements possible because if the main section overlaps in the area of its first side and the connecting section, the connecting holes of the main section and connecting section are aligned.

At least part of the connecting holes of the main section and / or connecting section is preferably designed as elongated holes. In particular, the connecting holes of the main section are circular and a connecting hole arranged halfway along the connecting section is circular and at least two other connecting holes of the connecting section, which receive the circular connecting hole between them, are designed as elongated holes. The elongated holes extend longitudinally parallel to the first and second sides of the main section. With this design it is achieved that when the wall elements to be arranged vertically with their main sections are to be mounted on a not quite flat base, thus not a flat floor, slight angular differences are compensated for can, nevertheless, a firm connection of the wall elements is guaranteed in the overlap area of the main section and the connecting section.

In terms of sealing the respective wall element to the floor, it is considered to be particularly advantageous if the surface of the first or second bearing section facing away from the main section is a bearing surface for adhesive connection with the seal or for inserting, in particular adhesive inserting the seal into the first or second bearing section or for inserting the seal into the first or second bearing section.

Particularly from the point of view of storing a large number of wall elements, it is advantageous if the wall elements are of identical design. In particular, the wall elements, lying on top of one another in the area of the main sections, can be stacked. Against this background, it is advantageous if the seal is mounted only immediately before the wall element or the device for retaining water is fitted, and is thus connected to the wall element or is arranged between the wall element and the floor. The wall element can be mounted particularly easily if the seal is already connected to the wall element in the region of the first or second bearing section during the assembly process, for example by positive locking, such as plugging on, or by gluing.

In the case of the device for retaining water, with a plurality of wall elements, it is provided that these wall elements are arranged in a zigzag shape or in a closed configuration, the wall elements being screwed in the area of the main section and connecting section, and between the respective storage section assigned to the floor and a gasket is arranged on the bottom, and fastening means are also provided which contact the respective contact surface of the bottom bearing section and are screwed or hammered into the bottom.

In particular, the wall elements are sealed off from the floor by means of seals which are glued to the respective bottom bearing section over its entire length or are plugged onto this bearing section from the bottom under the respective bearing section over its entire length, in particular with additional gluing, or are plugged onto the respective bearing section in the transverse extent.

The seal is preferably a lip seal, a seal made of pore rubber, in particular made of foam rubber, or a seal that hardens when exposed to water. In the event of water retention, this seal is soaked and a solvent absorbed by the seal is activated, which causes the seal to become relatively firm, which results in a good sealing effect.

When connecting the respective wall element to the floor by means of a claw, it is provided in particular that the respective claw has a central through hole for the screw or nail, and this claw has on one side two front edges which enclose an angle> 180 ° and on another side, in particular the side facing away, has two front edges which enclose an angle of <180 °. In particular, this angle <180 ° is an angle of 120 ° to 150 ° and the angle> 180 ° is an angle of 210 ° to 240 °. In a specific exemplary embodiment, one angle is 135 °, the other angle is 225 °. This special design of the claw makes it possible to position it in the connection area between two adjacent wall elements. The respective claw contacts the contact surfaces of the bottom bearing sections of the two wall elements. If, for example, the wall elements are at an angle of 135 ° to one another, the claw is used in the position in which the two front edges enclose an angle of 135 °. If the two adjacent wall elements are instead arranged at an angle of 225 ° to one another, the other side of the claw is used, in which the two front edges enclose an angle of 225 ° with one another.

According to an advantageous development, it is provided that the device for retaining water has at least one support which is connected to a wall element, in particular screwed, and is connected to the floor by means of fastening means. This support engages in an area adjacent to the upper end of a wall element, for example in the connection area of two wall elements, and supports the wall element or the device for retaining water with respect to the water at a relatively great height.

The device for retaining water is in particular a flood protection wall or a circumferential wall of a water basin formed by this wall and a floor. If the device is a flood protection wall, it is connected in the area of the end wall elements to a stationary element, for example a building connection, preferably screwed to this building connection in accordance with the connection to the other wall element.

Further features of the invention are shown in the subclaims, the description of the drawing below and the drawing itself, it being noted that all individual features and all combinations of individual features are essential to the invention.

Figur 1

einen Blechzuschnitt zur Herstellung eines Wandelementes, veranschaulicht in einer Draufsicht des Zuschnitts,

Figur 2

eine räumliche Ansicht des aus dem Zuschnitt hergestellten Wandelements,

Figur 3

eine Ansicht III des in Figur 2 gezeigten Wandelements,

Figur 4

einen Schnitt durch das Wandelement gemäß der Linie IV-IV in Figur 3,

Figur 5

eine räumliche Anordnung von drei Zick-Zack-förmig miteinander verbundenen Wandelementen zur Verwendung bei einer Einrichtung zum Zurückhalten von Wasser,

Figur 6

eine Ansicht VI der in Figur 5 dargestellten Anordnung,

Figur 7

eine vergrößerte Darstellung des Bereichs VII in Figur 5,

Figur 8

eine vergrößerte Darstellung des Bereichs VIII in Figur 5,

Figur 9

eine Draufsicht eines Blechzuschnitts einer bei einer Ausführungsform des Befestigungsmittels Verwendung findenden Pratze,

Figur 10

eine räumliche Ansicht einer Halteleiste mit von dieser aufgenommenen Schrauben,

Figur 11

eine räumliche Ansicht einer Stütze zum Abstützen eines Wandelements,

Figur 12

eine räumliche Anordnung von fünf miteinander verbundenen und mit einem Boden befestigten Wandelementen, die einen Teilbereich einer Einrichtung zum Zurückhalten von Wasser bilden,

Figur 13

eine Detaildarstellung eines Teilbereichs zweier miteinander verbundener Wandelemente gemäß Figur 12, im Bereich der Pratze.

In the drawing, the invention is illustrated using several exemplary embodiments, without being limited to these. It shows:

Figure 1

a sheet metal blank for producing a wall element, illustrated in a plan view of the blank,

Figure 2

3 shows a spatial view of the wall element produced from the blank,

Figure 3

a view III of in Figure 2 shown wall element,

Figure 4

a section through the wall element along the line IV-IV in Figure 3 ,

Figure 5

a spatial arrangement of three zigzag-shaped interconnected wall elements for use in a device for retaining water,

Figure 6

a view VI of the in Figure 5 arrangement shown,

Figure 7

an enlarged view of area VII in Figure 5 ,

Figure 8

an enlarged view of area VIII in Figure 5 ,

Figure 9

3 shows a plan view of a sheet metal blank of a claw used in one embodiment of the fastening means,

Figure 10

a spatial view of a retaining strip with screws picked up by this,

Figure 11

3 shows a spatial view of a support for supporting a wall element,

Figure 12

a spatial arrangement of five wall elements which are connected to one another and fastened to a floor and form a partial region of a device for retaining water,

Figure 13

a detailed representation of a portion of two interconnected wall elements according to Figure 12 , in the area of the claw.

Figure description

Figure 1 shows a sheet metal blank 1 to form a wall element 2, which is about 1000 mm high, about 650 mm wide and about 3 mm thick in the installed state. The sheet metal blank is a lasered sheet metal plate before edging.

The sheet metal blank has three bending lines, namely the bending lines 3 and 4 arranged parallel to one another and the bending line 5 arranged perpendicular to these. These bending lines 3 to 5 divide the sheet metal blank 1 into a rectangular main section 6, a first bearing section 7, a second bearing section 8 and a connecting section 9. The two bearing sections 7 and 8 are of identical design and have an identical hole pattern of four connecting holes 10, which are arranged in a row parallel to the bending line 3 and 4, respectively.

Two connecting holes 10 of the respective bearing section 7 and 8 are arranged closer to each other, while there is a larger distance between the second and third connecting hole 10 of the respective bearing section 7 and 8. The connection holes 10 are arranged symmetrically to the longer axis of symmetry of the main section 6.

The connecting section 9 is provided with six connecting holes 11 which are each arranged at a uniform distance from one another and are arranged essentially along the length of the connecting section 9. These connection holes 11 each have a circular cross section. On the side facing away from the connecting section 9, the main section 6 is provided with six connecting holes 12. With respect to the longitudinal extent of the main section 6, these are arranged identically to the connection holes 11. Thus, a respective connection hole 11 lies on the same line as an associated connection hole 12, with respect to a parallel to the bending line 3 or 4.

In the case of the sheet metal blank 1 described so far, the first bearing section 7 is bent downward by 90 ° about the bending line 4 with respect to the plane of the main section 6, and the second bearing section 8 is bent upward through 90 ° with respect to the flat main section 6 around the bending line 3. The connecting section 9 is, based on the flat main section 6, bent downward by 45 ° about the bending line 5. This results in the wall element, as in the Figures 2 to 4 is shown.

The wall element thus has, and in this respect reference is made to the sheet metal blank 1 for the sake of simplicity, a first side 13, a second side 14 arranged parallel to the first side 13, a third side 15 arranged perpendicular to the first side and a parallel to the third side 15 arranged fourth side 16. The two flat bearing sections 7 and 8 are of identical design and have the shape of a trapezoid, the long side of the trapezoid extending over the entire length of the first side 13 and second side 14 of the main section 6. The connecting section 9 is also flat and extends extends over the entire length of the third side 15 of the main section 6 or almost over the entire length of this third side 15. The connecting section 9 is rectangular, except for rounded corners that face away from the third side 15 of the main section 6. The connection holes 12 are arranged adjacent to the fourth side 16 of the main section 6. These connecting holes 12 are designed as elongated holes, with a longitudinal orientation perpendicular to the fourth side 16 of the main section 6.

The respective surface 17 of the first bearing section 7 and second bearing section 8 facing the main section 6 (see Figure 3 ) is a contact surface for fasteners 18 (see Figures 12 and 13 ) for connecting the wall element 2 to a floor 19. This floor 19 is, for example, a paved surface. According to the exemplary embodiment, the respective fastening means 18 comprises a claw 20 and a screw 22 passing through a hole 21 in the claw 20. The claw 20 contacts the respective lower bearing section 7 or 8 in the area of the surface 17 and pulls the claw 20 via the screw 22 screwed into the floor 19, in particular via the screw 20 screwed into a dowel anchored in the floor, the bearing section 7 or 8 and thus the wall element 20 against the floor 19. Instead of using one or more claws 20, the only one screw 22 can be used with the contact surface, thus surface 17, of the respective bearing section 7 or 8. This is inserted through the holes 10 and screwed into the floor.

Which bearing section 7 or 8 is clamped by means of the fastening means 18 depends on the orientation of the wall element 2, namely whether this wall element 2 is positioned on the floor 19 with the first bearing section 7 below or with the second bearing section 8 below .

The surface facing away from the contact surface for the fastening means 18, thus the surface 23 of the first bearing section 7 and 12 facing away from the main section 6 second bearing section 8 is a bearing surface for a seal 24 to be arranged between the respective bearing surface and the bottom 19.

Figure 9 shows a sheet metal blank 25 for producing a claw 20. The sheet metal blank 25 is H-shaped, with a central through hole 26 for the screw 22 and four free claw sections 27, each of which is assigned a bending line 28 which is parallel to an edge delimiting this claw section 27 29 is arranged. The edges 29 of two claw sections 27 arranged adjacent to one another enclose an angle of 135 °, the edges 29 of the two other claw sections 27 form an angle of 225 °. Relative to the leaf level of the Figure 9 the respective claw sections 27 are bent downward by 90 ° around the assigned bending lines 28, so that the in the Figures 12 and 3rd shown training of the claw 20 results. The respective claw 20 is positioned in the connection area of two adjacent wall elements 2. When two wall elements 2 are arranged at an angle of 135 °, the claw 20 is placed on the two lower bearing sections of the wall element 2 and clamped against the surface 17 by means of the screw 22, the seal 24 being positioned beforehand between these bearing sections and the base 19 becomes. If, on the other hand, the wall elements 2 are arranged at an angle of 235 ° to one another, the respective claw 20 can be placed on one or both lower bearing sections of the two wall elements 2 and braces this wall element 2 or these wall elements 2 with the seal 24 arranged therebetween against the floor 19 .

The Figures 5 to 8 show the arrangement of three interconnected wall elements 2. Here, the connection of the two wall elements 2 can be accomplished particularly easily if, as is additionally illustrated in the illustration in FIG. 10, screws 30 are held pre-assembled in a perforated strip 31, for example by a loose adhesive connection, the hole pattern of the perforated strip 31 corresponding to the spacing of the connecting holes 11. Thus, when the perforated strip 31 is applied to the wall element 2 in a defined manner, all the screws 30 can be inserted through the connecting holes 11 and 12 of the two wall elements 2 and only need to be screwed into corresponding nuts 32 become. Before the wall elements 2 are screwed together and the wall elements 2 are mounted on the floor 9, the bearing sections 7 and 8 in the area of their surfaces 23 can be completely glued to the seal 24, for example a seal 24 made of a foam rubber layer can be glued to this surface 23. It is also entirely possible to deliver the wall elements 2 with the seals 24 glued to the surfaces 23, thus gluing both bearing sections 7, 8, depending on the selected position of the wall element 2, once bearing section 7 above, otherwise bearing section 7 below to already have the wall element 2 with seal 24. It is also advantageous if the connecting section 9 is also glued in the connection area to the main section 6 with a seal 33, in particular a seal made of a foam rubber strip. As a result, an optimal seal is ensured not only to the floor 19, but also between the connected wall elements 2.

Figure 11 shows a support 34, which can also be used additionally, for supporting a wall element 2 or two wall elements 2 in their connecting region, at a relatively large distance from the floor 19. The support has a central rod 35 which is articulated in the region of its lower end with a base plate 36 and in the region its upper end is articulated to a support plate 37. The respective articulated connection 38 is made by a screw-nut connection between the parts. The base plate 36 is provided on both sides of the connection of the rod 35 to it with two parallel elongated holes 39 and the support plate 37 is provided as a double-angled plate with a plurality of holes 40. The plate is positioned in the connection area between two wall elements 2 and additionally screwed by means of the screws 30 to connect the wall elements 2. The respective screw 30 is thus not only inserted through the main section 6 of one wall element 2 and the connecting section 9 of the other wall element 2, but also through the corresponding hole 40 in the support plate 37 and then the nut 32 is screwed on. The base plate 26 is anchored in the base 19 by means of screws which are inserted through the elongated holes 39 and screwed into the base, or in the manner described by clamping by means of a claw 20 and screw 22.

The Figures 12 and 13 show a variant of the sealing of the wall elements 2 to the floor 19, wherein these wall elements 2 are otherwise of a lower height. The seal 24 is made of elastic material and is attached to the bearing section 7 or 8 arranged below, with a plug-on direction in the plane of the bearing section. The seal thus surrounds the bearing section, quasi in the form of a U, and is thus in contact with the bearing section 7 and 8 both in the area of the surface 23 and the surface 17.

The representation of the Figure 12 it can be seen that the various wall elements 2 form a zigzag arrangement 41 for retaining water. This device 41 is connected to walls 42 of buildings, in particular screwed, in the area of the end areas facing away, with respect to the horizontal extent of the device 41. The connection holes 11 and 12 are also provided for this. On the other hand, there is the possibility of connecting the various wall elements 2 in such a way that they form a closed arrangement which is connected to the floor 19. In this case, the wall elements 2 form a container for holding water, for example extinguishing water, with which a water basin is formed.

In the embodiment according to the Figures 12 and 13 the connection holes 12 of the main section 6 are circular. A connecting hole 11 arranged halfway along the connecting section 9 is circular. Two other connecting holes 11 of the connecting section 9, which receive the circular connecting hole 11 between them, are designed as elongated holes 11 which extend longitudinally parallel to the first and third sides of the main section 6. Not only by forming the elongated holes 12 according to the cut Figure 1 but also through this design according to the Figures 12 and 13 Adjacent wall elements 2 can be arranged and connected slightly tilted to one another, so that certain unevenness in the area of the floor 9 on which the wall elements 2 stand can be compensated.

Reference list

1

Sheet metal cutting

2nd

Wall element

3rd

Bending line

4th

Bending line

5

Bending line

6

Main section

7

first storage section

8th

second storage section

9

Connecting section

10th

Connection hole

11

Connection hole

12th

Connection hole

13

first page

14

second page

15

third page

16

fourth page

17th

area

18th

Fasteners

19th

ground

20th

Claw

21

hole

22

screw

23

area

24th

poetry

25th

Sheet metal cutting

26

Through hole

27

Claw section

28

Bending line

29

Edge

30th

screw

31

Perforated strip

32

mother

33

poetry

34

support

35

Rod

36

Base plate

37

Support plate

38

connection

39

Long hole

40

hole

41

Facility

42

Wall

Claims (11)

1. Assembly (41) for holding back water, in particular for use in a flood-protection wall or a water basin, having a plurality of wall elements (2), wherein the respective wall element (2) is formed in one piece and the wall element (2) has a planar, rectangular main portion (6) having a first side (13), a second side (14), which is arranged parallel to the first side (13), a third side (15), which is arranged perpendicularly to the first side (13), and a fourth side (16), which is arranged parallel to the third side (15), and the wall element (2) has a first planar bearing portion (7), which is connected to the main portion (6) in the region of the first side (13), over the length of the latter, and is arranged perpendicularly to the main portion (6), and a second planar bearing portion (8), which is connected to the main portion (6) in the region of the second side (14), over the length of the latter, and is arranged perpendicularly to the main portion (6), wherein the second bearing portion (8) is arranged opposite to the first bearing portion (7), as seen in relation to the main portion (6), and the wall element (2) has a first connecting portion (9), which is connected to the main portion (6) in the region of the third side (15), over the length of the latter, and is inclined in relation to the plane of the main portion (6), and the connecting portion (9) is provided with a plurality of connecting holes (11), which are arranged in the longitudinal direction of the connecting portion (9) and pass through the latter, and the main portion (6), in the region of the fourth side (16), has connecting holes (12) which correspond to the number of connecting holes (11) of the connecting portion (9) and are arranged along the longitudinal extent of the fourth side (16), wherein the wall elements (2) are arranged in zigzag form or in a closed configuration, characterized in that the surface (17) of the first and second bearing portions (7, 8), said surface being directed toward the main portion (6), is a contact surface for fastening means (18) for connecting the wall element (2) to a ground surface (19), and the surface (23) of the first and second bearing portions (7, 8), said surface being directed away from the main portion (6), is a bearing surface for a seal (24) which is to be arranged between the respective bearing surface and the ground surface (19), wherein the wall elements (2) are screw-connected in the region of the main portion (6) and connecting portion (9), and a seal (24) is arranged between the respective bearing portion (7 or 8) assigned to the ground surface (19) and the ground surface (19), and wherein the assembly (41) has fastening means (18), which establish contact with the respective contact surface (17) of the ground-side bearing portion (7 or 8) and are screwed, or driven, into the ground surface (19), wherein the contact surfaces for the fastening means (18) serve to provide contact by means of fastening means (18) formed as clamping brackets (20), at least in the two mutually remote end regions of the bearing portion (7, 8), as seen in relation to the longitudinal extent of the respective bearing portion (7, 8), wherein the respective clamping bracket (20) has a mount for a screw (22) or a nail.
2. Assembly (41) according to Claim 1, characterized in that the respective wall element (2) consists of metal, preferably is formed from sheet metal, in particular is formed from a galvanized sheet metal.
3. Assembly (41) according to Claim 1 or 2, characterized in that the connecting portion (9) encloses an angle of 120° to 150°, preferably 130° to 140°, in particular 135°, with the main portion (6) of the respective wall element (2).
4. Assembly (41) according to one of Claims 1 to 3, characterized in that adjacent connecting holes (11) of the connecting portion (9) of the respective wall element (2) are spaced apart from one another by the same distance, as seen in relation to the longitudinal extent of the connecting portion (9), and adjacent connecting holes (12) of the main portion (6) of the respective wall element (2) are spaced apart from one another by the same distance, as seen in relation to the longitudinal extent of the fourth side (16) of the main portion (6), wherein said distances between adjacent connecting holes (11, 12) of the connecting portion (9) and main portion (6) are identical, and the distances between those connecting holes (11, 12) of the connecting portion (9) and main portion (6) which are closest to the extension of the first side (13) of the main portion (6) are identical.
5. Assembly (41) according to Claim 4, characterized in that at least some of the connecting holes (11, 12) of the connecting portion (9) and/or main portion (6) are designed in the form of slots (12).
6. Assembly (41) according to one of Claims 1 to 5, characterized in that the surface (23) of the first bearing portion (7) or second bearing portion (8), said surface being directed away from the main portion (6), is a bearing surface for adhesive-bonding connection to the seal (24) or for insertion, in particular adhesive-bonding insertion, of the seal (24) into the first or second bearing portion (7, 8) or for fitting the seal (24) into the first or second bearing portion (7, 8).
7. Assembly (41) according to one of Claims 1 to 6, characterized in that the sealing of the wall elements (2) in the direction of the ground surface (19) takes place via seals (24) which are adhesively bonded to the respective ground-side bearing portion (7 or 8), over the entire length of the latter, or are fitted onto the respective bearing portion (7 or 8) from the ground surface beneath said bearing portion (7 or 8), over the entire length of the latter, in particular with additional adhesive bonding, or are fitted onto the respective bearing portion (7 or 8) along the transverse extent of the latter.
8. Assembly (41) according to one of Claims 1 to 7, characterized in that the seal (24) is designed in the form of a lip seal, a seal made of sponge rubber, in particular of foam rubber, or in the form of a seal which hardens under the action of water.
9. Assembly (41) according to one of Claims 1 to 8, characterized in that the respective clamping bracket (20), in particular the clamping bracket (20) formed from sheet metal, has a central throughhole (26) for the screw (22) or the nail, and the clamping bracket (20), on one side, has two end-side edges (29) which enclose an angle > 180° and, on another side, in particular a side directed away from the first, has two end-side edges (29) which enclose an angle < 180°.
10. Assembly (41) according to one of Claims 1 to 9, characterized in that the assembly (41) has at least one support (34), which is connected, in particular screw-connected, to a wall element (2) and is connected to the ground surface (19) by fastening means (22).
11. Assembly (41) according to one of Claims 1 to 10, characterized in that it is a flood-protection wall or an encircling wall of a water basin, which is formed by said wall and a base.

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