WO2004090266A1

WO2004090266A1 - Membrane wall element for erecting a tent or shed-type construction

Info

Publication number: WO2004090266A1
Application number: PCT/AT2004/000119
Authority: WO
Inventors: Roar Eide; Kjell Plassen
Original assignee: Sattler Ag
Priority date: 2003-04-09
Filing date: 2004-04-07
Publication date: 2004-10-21
Also published as: ATE398717T1; NO20031632D0; EP1611303A1; EP1611303B1; DE502004007390D1; US20070023076A1; CA2521312A1; NO319138B1

Abstract

The invention relates to a membrane wall element for erecting a tent or shed-type construction, at least two wall membranes (1A, 1B) being fixed to at least two opposing end sections. When fixed, said wall membranes are interspaced by means of at least one rigid spacer element (2), such that a cavity (6) is formed between the same.

Description

Membrane wall element for the erection of a tent or hall construction

The invention relates to a membrane wall element for the erection of a tent or hall construction, with a wall membrane which is clamped at least at two opposite end sections.

Humanitarian aid organizations and military associations often take part in various missions where it is necessary to accommodate people in short-term accommodation. In this context, solutions based on tents are usually used, but container solutions have also been tried. From an economic and transport point of view, the tent variant proves to be the cheapest solution, but this creates problems with regard to the thermal properties, which is why various sides are striving to improve these properties. This is both to reduce thermal signals and to save energy in cold and warm climatic conditions.

It is already known from other applications to use air as an insulation medium, whereas this has not hitherto been the case for conventional tent or hall constructions.

More or less permanent hall constructions made of canvas are known, in which the halls include be maintained by air which is in the overpressure between the fabric panels. However, such a solution would not be suitable for the tent or hall constructions mentioned above, since it requires, among other things, a lot of additional equipment which, in addition, would have to be operated in a safe and stable manner.

EP 1 273 743 A shows a tent with a pneumatic wall construction, which has a two-layer wall structure formed from three flexible tent sheets having. The inner layer, which is delimited by the inner and middle tent sheets, is inflatable and forms the main supporting structure of the wall construction, while the outer layer, which is delimited by the middle and the outer tent sheets, represents a convection space that rises from the ambient air in ascending order Direction can be flowed through. Inflatable support hoses are also available between the middle and outer tent sheets as an additional support structure and as a spacer. However, due to the constant pressurization, such a tent requires a relatively high outlay and cannot be operated without a power supply through a mains connection or a generator.

The object of the invention is therefore to provide a wall element of the type mentioned which, despite its simple construction and without the application of compressed air, has very good thermal properties. Another object of the invention is to provide a wall element which, with high thermal insulation, also has a seal against gases and liquids.

According to the invention, this is achieved in that at least two wall membranes are provided which, in the clamped state, are spaced apart from one another by at least one rigid spacer element in such a way that a cavity is formed between the at least two wall membranes.

Due to the tension exerted on the wall membranes, the at least one spacer element adjusts itself so that it keeps the wall membranes spaced, as a result of which a thermally insulating air cushion is formed.

The at least two wall membranes can be made of canvas but also of any other suitable material.

A stable clamping of the wall membranes can be achieved in that the at least two wall membranes are fixed at two opposite end sections in clamping elements, which are preferably formed by profile bars, which have high rigidity and low weight and at the same time can have suitable grooves for clamping the wall membranes.

In order to be able to clamp the at least two wall membranes together as uniformly as possible, it has proven to be advantageous if the at least two wall membranes are each joined together at opposite end sections.

In this case, a known, reliable clamping aid can be used in that a welt cord is provided on the joined end sections of the wall membranes, by means of which the wall membranes can be clamped.

Correspondingly, the profile bars can have undercut longitudinal channels into which the piping cords of the assembled wall membranes can be drawn in. In this way, the wall membranes can be secured against slipping out along their end sections provided in the profile bars during the clamping process.

In order to avoid labor-intensive retraction of the welt cords, the profile bars can have longitudinal channels in which the welt cords of the assembled wall membranes can be inserted, and the longitudinal channels can be closed by cover rails in such a way that the piping cords are fixed in the profile bars.

As one of the possible tensioning means for tensioning the wall membranes, a tensioning device with tensioning bars can be provided between the profile bars, over which the wall membranes defined in the profile bars can be stretched apart. The forces exerted on the tensioning rods by the tensioning device move the profile rods in such a way that the wall membranes clamped in the profile rods are brought into a tensioned position.

A possible development of the invention can consist in that the tensioning device can be actuated via a toggle lever device, the drive spindle of which is oriented transversely to the longitudinal axis of the tensioning rods for actuating two toggle levers. By rotating the drive spindle by means of a suitable tool, a tensioning movement of the tensioning rods can be brought about, which results in the tensioning of the wall membranes and the resulting spacing thereof due to the spacing element brought into the spacing position.

A further embodiment of the invention can consist in that the tension rods have a hollow profile with which they can be slid onto one end on profile ends of the toggle lever device, so that the tension rods can be moved via displacement elements actuated by the toggle levers, and in that at the other end of the tension rods Flange piece is attached to the profile bars for fixation. In this way, relatively high forces can be applied to clamp the wall membranes via the toggle lever device, so that even larger membrane wall elements according to the invention can be brought into the tensioned state and held in this.

A uniform spacing of the wall membranes can be achieved in that the long sides of the at least one rigid spacing element between the at least two wall membranes run parallel to the mutually opposite joining lines of the wall membranes.

A possible variant of the invention can be that the at least one Rigid spacer has a rigid intermediate piece, on the long sides of which flexible strips are formed, which are connected to the opposite inner sides of the at least two wall membranes, so that the long sides of the at least one rigid intermediate piece are articulatedly connected to the wall membranes, the articulation points on the wall membranes being the same in each case are spaced far from the edges of the end portions of the wall membranes, and the rigid intermediate piece and the membrane portions extending to the end portions, when viewed in cross section, form an isosceles triangle.

If such intermediate pieces are attached to opposite end regions between two wall membranes, they enable the wall membranes to be stored without any spacing in the untensioned state. As soon as the wall membranes are brought into the tensioned state, the rigid intermediate pieces adjust themselves transversely to the wall membranes on account of the forces acting on them and thus ensure their spacing and the formation of an air cavity between them.

Therefore, it can further be provided that the at least one rigid intermediate piece has sufficient rigidity to achieve the separation of the wall membranes spaced apart from one another when the wall membranes are clamped.

The rigid intermediate piece is expediently designed in the form of a rod, but any other embodiment achieving a distance can be chosen within the scope of the invention.

In order to use the tensile forces acting on the opposing membranes to align the rigid intermediate piece transversely to them, as soon as tensile stress is exerted on them, the flexible strips are attached in such a way that that they extend in opposite directions from the long sides of the rigid intermediate piece.

Basically, two or more wall membranes can be combined within the scope of the invention, a structurally simple embodiment of the invention consists in the fact that two wall membranes are formed which are held apart from one another in the tensioned state by two spacer elements.

Sealing of the wall elements according to the invention can be achieved by the wall membranes being connected to one another in a sealed form in the parts which extend along all membrane end regions, and any necessary ventilation devices are present so that air can penetrate into the cavities when the wall element is stretched ,

A wall element according to the invention with three wall membranes can be formed in that an inner wall membrane and an outer wall membrane are provided, between which an intermediate wall membrane extends, the inner wall membrane, the intermediate wall membrane and the outer wall membrane being clamped apart from one another by at least two rigid spacer elements in such a way that they are spaced apart form between these cavities.

The spacing of such a wall element with three wall membranes is more complex than that with a wall element formed from two membranes. A possible embodiment can consist in that the rigid spacer elements have rigid intermediate pieces, on the long sides of which flexible strips are formed, which are connected to the opposite inner sides of the inner wall membrane and the intermediate wall membrane and the intermediate wall membrane and the outer wall membrane, so that the long sides of the rigid intermediate pieces are articulated are connected to the wall membranes, the Articulation points on the wall membranes are selected so that the membrane portions of the inner and outer wall membranes extending to the end sections and the rigid intermediate pieces in the tensioned state - seen in cross section - form an isosceles triangle, while the intermediate wall membrane runs continuously flat along the contour of the isosceles triangle , Thus, when the three-wall membrane wall element is tensioned, the intermediate pieces arranged between the wall membranes adjust themselves so that all three wall membranes are evenly spaced from one another, so that two separate, adjacent air cavities are formed, which enable an even higher thermal insulation than the two-wall membrane wall element.

For military use, the wall membranes can be made of a material that is resistant to combat gases or the like. is tight.

Furthermore, it can be provided that the intermediate wall membrane is coated with aluminum or another suitable material in order to achieve heat reflection and / or possibly also shielding against electromagnetic radiation. The other wall membranes can also be provided with such a coating.

The wall membranes can also be so pronounced that light transmission is prevented.

In order to enable easy removal of contaminants, the inner wall membrane can be made from an easy-to-clean material.

The rigid spacer element arranged between the at least two wall membrane membranes can be a hindrance during transport, which is why the at least one rigid spacer element can be divided once or several times along its length, so that the wall element can be folded up. Furthermore, the invention relates to a tent or hall construction using at least one wall element according to the invention.

The task is to create a tent or hall construction that can be assembled and disassembled with simple means and that has very good thermal and sealing properties.

This is achieved according to the invention in that the at least one wall element forms a tunnel-shaped cross section with two side wall parts and a roof wall part connecting the side walls.

In this way, the entire cross-section of the tent or hall is constructed by means of at least two continuous wall membrane sheets, which enable high thermal insulation and high heat transfer resistance. Depending on the size of the tent or hall construction to be set up, any number of such tunnel-shaped cross sections can be strung together.

According to a further embodiment of the invention, the profile bars for clamping the wall membranes can run according to the selected tunnel cross-section along a multiply kinked line starting at a first base point and ending at a second base point spaced from this, and along the course of the profile bars two wall membranes can be clamped with spacer elements be so that the cavity is formed between the two wall membranes.

Another development of the invention can consist in that at the

Kinks of the tunnel cross-section the inside of the two

Wall membranes are shortened in length by taking out a lens-like cutout and the cutout edges by a Velcro fastener are connectable or welded together. This prevents bulging of the at least two wall membranes at the points where there is a change in direction in the course of the at least two wall membranes.

But it can also be provided that the inside wall membrane is divided two or more times to allow easier pulling into a piping profile.

A further embodiment of the invention can consist in that a further outer wall membrane is stretched between the profiles along the side wall parts, which forms a ventilation space between the further outer wall membrane and the two wall membranes. In contrast to the air cavity, which is present between the two wall membranes of the wall element according to the invention and is used for thermal insulation, the rear ventilation space formed in this way is intended for the passage of air in order to be able to dissipate the radiant heat penetrating from the outside through the outer wall membrane.

Finally, a further variant of the invention can consist in that a roof outer wall membrane is stretched apart from the roof wall part and forms a ventilated cold roof space between the roof wall part and the roof outer wall membrane. The cold roof space is also designed to dissipate radiant heat by convection of the air in the cold roof space and to prevent the interior of the time or hall from heating up.

The invention is explained in detail below with reference to the embodiments shown in the accompanying drawings. 1 shows a schematic cross section through an embodiment of the membrane wall element according to the invention in the open state;

2 shows a schematic cross section of the wall element according to FIG. 1 in the unclamped state;

3 shows a schematic cross section through a further embodiment of the wall element according to the invention in the open state;

Fig. 4 shows a schematic section through a spacer for different

Embodiments of the wall element according to the invention;

5 and 6 are a side and a top view of a tensioning device which is used in the embodiments shown in FIGS. 9 and 11; 7 shows an end view of part of an embodiment of the invention

Wall element with a profile bar for clamping wall membranes;

8 shows a detail of a further embodiment of a profile rod for clamping wall membranes;

9 shows a cross section through an embodiment of the tent and hall construction according to the invention;

10 shows a side view of a further embodiment of the invention

Wall element and

11 shows an oblique view of a further embodiment of the wall element according to the invention.

Fig. 1 shows a membrane wall element for the erection of a tent or

Hall construction with two wall membranes 1A, 1 B, which are fixed at their two opposite end regions in clamping elements 5.

The two wall membranes 1A, 1 B are each joined together at their opposite end sections 40 and can be formed, for example, from canvas or another suitable material, for example a plastic. In the clamped state, the two wall membranes 1A, 1 B are spaced apart from one another by two rigid or less elastic spacer elements 2 such that a cavity 6 is formed between them. 4 shows an enlarged view of the spacer element 2, which has a rigid, rod-shaped intermediate piece 3, on the longitudinal sides of which flexible strips 4 are formed, which within the wall element in FIG. 1 with the opposite inner sides of the two wall membranes 1A, 1B are connected so that the long sides of the rigid intermediate piece 3 are connected in an articulated manner to the wall membranes 1A, 1B.

The flexible strips can be formed, for example, from the same material as the wall membranes 1A, 1B or another suitable material.

In the embodiment shown in FIG. 1, the articulation points on the wall membranes 1A, 1B are each equally spaced from the edges of the end sections of the wall membranes 1A, 1B, as a result of which the rigid intermediate piece 3 and the membrane parts running to the end sections are in the tensioned state. seen in cross section - form an isosceles triangle. Another type of arrangement of the spacer elements 2 is also possible within the scope of the invention, which results in a spacing of the wall membranes 1A, 1B in the tensioned state.

Furthermore, in the case of large distances between the clamping elements 5, a plurality of spacer elements 2 distributed over the wall element width can also be formed, which can be continuous or interrupted in order to be able to maintain the constant spacing between the wall membranes 1A, 1 B over the entire wall element width.

The wall element according to the invention is in the clamped state between the two clamping elements 5 in FIG. 1 and in the unclamped in FIG

Condition shown. If force is exerted on the clamping elements 5 in the direction of the arrows P, the wall element according to the invention is stretched or tensioned, by transferring the stretching forces to the wall membranes 1A and 1 B, which act due to the connection of the wall membranes 1A, 1 B with the rigid intermediate pieces 3 so that they are transverse to the wall membranes 1A and 1 B and to separate the Guide wall membranes 1A, 1B. This creates an air-filled, closed cavity 6 between the wall membranes 1A and 1 B, provided that these are connected to each other in a correspondingly sealed manner along their entire boundary. This cavity 6 brings about the desired insulation layer.

3 shows a further embodiment of the wall element according to the invention, in which a total of three wall membranes, an inner wall membrane 1A, an outer wall membrane 1B and an intermediate wall membrane 1C are spanned with cavities 6, which results in an even better thermal insulation.

Flexible strips 4 are formed on the long sides of the rigid intermediate pieces 3, which are connected to the opposite inner sides of the inner wall membrane and the intermediate wall membrane 1A, 1C and with the intermediate wall membrane and the outer wall membrane 1C, 1 B, so that the long sides of the four rigid intermediate pieces 3 are connected in an articulated manner to the wall membranes 1A, 1 B, 1 C, the articulation points on the wall membranes 1A, 1 B, 1 C being selected such that the membrane portions of the inner and outer wall membranes 1A, 1 B and the rigid intermediate pieces 3 in the tensioned state - seen in cross section - form an isosceles triangle, while the intermediate wall membrane 1C runs continuously flat along the contour of the isosceles triangle.

The preferably rod-shaped intermediate pieces 3 are formed from a suitable rigid or semi-rigid material, which ensures that the desired distance between the wall membranes 1A, 1B, 1C is created and maintained when the wall element according to the invention is held open or tensioned becomes. There is no restriction with regard to the shape or material of the intermediate pieces 3 as long as they fulfill their function within the scope of the invention.

The membrane wall or canvas types used are independent of the principle of the invention. It is only necessary that they can be connected, for example by gluing, welding or similar techniques. An example of a membrane wall that is suitable for the invention is an embodiment in which the outer wall membrane 1 B is formed by polyurethane, e.g. seals against combat gases or the like and in which the inner wall membrane 1A consists of an easy-to-clean material, whereas the intermediate wall membrane 1C is aluminum-coated for heat reflection.

A suitable coating can also be used which adequately protects against electromagnetic radiation, so that the tent or hall construction formed with the wall element according to the invention acts like a Farraday cage.

The wall membranes can be completely sealed together along all edges, but in this case suitable ventilation devices must be attached so that air can penetrate and fill the cavity or cavities when the wall element according to the invention is stretched.

Although only wall elements are shown, each comprising two and three wall membranes, a number of membrane layers with the associated spacer elements can of course be used without departing from the scope of the invention. More than two spacer elements can also be attached between the wall membranes, if this is desired or is considered necessary for reasons of stability. Hall or tent structures constructed in accordance with the invention can also be used heated or possibly equipped with a cooling system.

In order to ensure a uniform clamping of the wall membranes in the embodiment according to FIGS. 7 and 11, the clamping elements are made by means of profile bars 55, e.g. formed from aluminum and a piping cord 36 is provided on the joined end portions 40 at the edge. In the context of the invention, however, the clamping can also be carried out without such a welt cord.

In addition to the double membrane according to the invention formed from the wall membranes 1A, 1B, a conventional wall membrane 79 is clamped by the profile bars 55 to form a wall element according to the invention.

The profile bars 55 have undercut longitudinal channels 30, into which the piping cords 36, 48 of the assembled wall membranes 1A, 1B and the wall membrane 79 are drawn (FIG. 7).

Between the profile bars 55, a tensioning device 15, which is shown in detail in FIGS. 5 and 6, is provided with tension bars 25, 26, by means of which the wall membranes 1A, 1B and 79 defined in the profile bars 55 are stretched apart.

The tensioning device 15 can be actuated via a toggle lever device 75, the drive spindle 16 of which toggle arms 17, 18 mounted for actuation by joints 9, 10, 11 is oriented transversely to the longitudinal axis of the tension rods 25, 26. The drive spindle 16 can be rotated via an actuating element 12 and thus movement of displacement elements 38, 39 can be brought about. The tensioning rods 25, 26 have a hollow profile with which they are pushed at one end onto guides 13 of the toggle lever device 75 and can be used to tension the Wall membranes are correspondingly moved apart by the displacement elements 38, 39 actuated by the toggle levers 17, 18.

At the other end of the tension rods 25, 26, a flange piece 29 is attached for fixing to the profile rods 55. For this purpose, in the embodiment of FIG. 7, screws 49 are held with their heads in undercut slots in the profile bar 55 and the respective flange piece 29 is screwed against the profile bar 55 by means of nuts.

In the tensioned state, the long sides of the rigid intermediate piece 3 between the two wall membranes 1A, 1B run parallel to the mutually opposite joining lines 90 of the wall membranes 1A, 1B (FIG. 11).

With very long profile bars 55, the pulling in of the welt cord 36 can be very tedious, which is why in the embodiment according to FIG. 8 the profiled bars 55 'have longitudinal channels 31 into which the piping cords 36 of the assembled wall membranes 1A, 1B are inserted and then the longitudinal channels 31 accordingly shaped cover rails 56 are closed so that the welt cords 36 are fixed in the profile bars 55 '. The cover rails are fixed with screws 57 which are screwed into the nuts 58 inserted into the profile bars 55 '.

In the exemplary embodiment according to FIG. 10, the at least one rigid spacer element 2 is divided once or several times along its length, so that the wall element can be folded up. This can also be provided for wall elements with three or more parallel wall membranes.

Fig. 9 shows an embodiment of a tent or hall construction, the under Use of a wall element according to the invention is constructed, wherein according to the invention the wall element forms a tunnel-shaped cross section with two side wall parts 80, 81 and a roof wall part 90 connecting the side walls. The shape of the cross-section can be changed according to the requirements. By stringing together several wall elements of the type shown in FIG. 9 to form a tent or wall construction, any longitudinal extension of the same is possible. Wall elements according to the invention can also be attached to the ends.

The profiled bars 55 (not shown in FIG. 9) for clamping the wall membranes 1A, 1B in accordance with the selected tunnel cross section run along a multiply kinked line starting at a first base point 101 and ending at a second base point 102 spaced therefrom. Along the course of the

Profile bars 55 are the two wall membranes 1A, 1 B clamped with spacer elements 2 (not shown in FIG. 9), so that the cavity 6 (not shown in FIG. 9) is formed between the two wall membranes 1A, 1 B. The entire tunnel profile is thus lined with the double membrane 1A, 1B.

At the kinks of the tunnel cross-section, the inside of the two wall membranes 1A, 1B are shortened in length by removing a lens-like cutout, not shown, and the cutout edges can be connected by a Velcro fastener 130 or welded together. Furthermore, the inside wall membrane can e.g. be divided into two or more, e.g. in two side wall parts and one top wall part to facilitate insertion into the piping profile.

Along the side wall parts 80, 81, a further outer wall membrane 79 is stretched between the profiles 55, which forms a ventilation space 95 between the further outer wall membrane 79 and the two wall membranes 1A, 1B. Air can circulate freely in the rear ventilation space 95 in order to To dissipate radiant heat, for example, by direct solar radiation that passes through the outer wall membrane 79.

A roof outer wall membrane 99 is stretched apart from the roof wall part 30 and forms a rear-ventilated cold roof intermediate space 120 between the roof wall part 90 and the roof outer wall membrane 99. Here, too, the cold roof space is used for cooling at summer temperatures, so that the temperature inside the tent structure is not too high in direct sunlight.

The tensioning devices 15 shown in FIG. 9 span the wall membranes 1A, 1B and 79 as well as the roof outer wall membrane.

Claims

1. Membrane wall element for the erection of a tent or hall construction, with a wall membrane which is clamped at least at two opposite end sections, characterized in that at least two wall membranes (1A, 1 B, 1C) are provided, which in the clamped state by at least one rigid spacer element (2) is spaced from one another such that a cavity (6) is formed between the at least two wall membranes (1A, 1 B, 1C).

2. Wall element according to claim 1, characterized in that the at least two wall membranes (1A, 1 B, 1C) are formed from canvas.

3. Wall element according to claim 1 or 2, characterized in that the at least two wall membranes (1A, 1B, 1C) are fixed at two opposite end sections in clamping elements (5).

4. Wall element according to claim 1, 2 or 3, characterized in that the clamping elements (5) by profile bars (55, 55 ') are formed.

5. Wall element according to one of the preceding claims, characterized in that the at least two wall membranes (1A, 1 B) are each joined together at opposite end sections (40).

6. Wall element according to claim 4 and 5, characterized in that a welt cord (36) is provided on the edge of the joined end portions (40).

7. Wall element according to claim 4 and 6, characterized in that the profile bars (5) have undercut longitudinal channels (30) into which the Keder cords (36) of the assembled wall membranes (1A, 1B) are retractable.

8. Wall element according to claim 4 and 6, characterized in that the profiled bars (55 ') have longitudinal channels (31) into which the piping cords (36) of the assembled wall membranes (1A, 1B, 1C) can be inserted, and that the longitudinal channels ( 31) can be closed by means of cover rails (56) in such a way that the welt cords (36) are fixed in the profile bars (55 ').

9. Wall element according to one of claims 3 to 8, characterized in that a tensioning device (15) with tensioning bars (25, 26) are provided between the profile bars (55), via which the wall membranes (1A, 1A) fixed in the profile bars (55) 1B) can be spread apart.

10. Wall element according to claim 9, characterized in that the clamping device can be actuated via a toggle lever device (75) whose drive spindle (16) for actuating two toggle levers (17, 18) is oriented transversely to the longitudinal axis of the tensioning rods (25, 26).

11. Wall element according to claim 10, characterized in that the tension rods (25, 26) have a hollow profile, with which they can be pushed onto one end of the profile ends of the toggle lever device (75), so that the tension rods (25, 26) through through the toggle lever (17, 18) actuated displacement elements (38, 39) are movable, and that at the other end of the tension rods (25, 26) a flange piece (29) is attached for fixing to the profile bars (55).

12. Wall element according to one of claims 5 to 11, characterized in that the long sides of the at least one rigid

Spacer elements (2) between the at least two wall membranes (1A, 1 B) parallel to the mutually opposite joining lines (90) of the Wall membranes (1A, 1B) run.

13. Wall element according to claim 12, characterized in that the at least one rigid spacer element (2) has a rigid intermediate piece (3), on the longitudinal sides of which flexible strips (4) are formed which are connected to the opposite inner sides of the at least two wall membranes (1A, 1 B) are connected so that the long sides of the at least one rigid intermediate piece (3) are connected in an articulated manner to the wall membranes (1A, 1B), the articulation points on the wall membranes (1A, 1 B) each being equidistant from the edges of the end sections of the Wall membranes (1A, 1B) are spaced apart, and the rigid intermediate piece (3) and the membrane portions running to the end sections form an isosceles triangle when viewed in cross section when viewed in cross section.

14. Wall element according to one of the preceding claims, characterized in that the at least one rigid intermediate piece (3) has sufficient rigidity to achieve the separation of the spaced-apart wall membranes (1A, 1 B, 1C) when the wall membranes (1A, 1 B, 1C) are clamped.

15. Wall element according to claim 13 or 14, characterized in that the flexible strips (4) extend in opposite directions from the long sides of the rigid intermediate piece (3).

16. Wall element according to one of the preceding claims, characterized in that two wall membranes (1A, 1B) are formed, which are held apart from one another in the tensioned state by two spacer elements (2).

17. Wall element according to one of the preceding claims, characterized characterized in that the wall membranes (1A, 1 B, 1C) are connected to one another in a sealed manner in the parts which run along all membrane end regions, and any necessary ventilation devices are present so that air can penetrate into the cavities (6) if that Wall element is spanned.

18. Wall element according to one of the preceding claims 1 to 15, characterized in that an inner wall membrane (1A) and an outer wall membrane (1 B) are provided, between which an intermediate wall membrane (1C) runs, the inner wall membrane (1A), the intermediate wall membrane ( 1 C) and the outer wall membrane (1 B) in the clamped state are spaced apart from one another by at least two rigid spacer elements (2) such that cavities (6) form between them.

19. Wall element according to claim 13 and 18, characterized in that the rigid spacer elements (2) have rigid intermediate pieces (3), on the longitudinal sides of which flexible strips (4) are formed, which are connected to the opposite inner sides of the inner wall membrane and the intermediate wall membrane (1A, 1C) and the intermediate wall membrane and the outer wall membrane (1 C, 1 B) are connected, so that the long sides of the rigid intermediate pieces (3) are articulatedly connected to the wall membranes (1A, 1B, 1C), the articulation points on the wall membranes (1A, 1B, 1C) are selected so that the membrane portions of the inner and outer wall membranes (1A, 1B) and the rigid intermediate pieces (3) in the tensioned state - viewed in cross section - form an isosceles triangle, while the intermediate wall membrane ( 1C) runs continuously flat along the contour of the isosceles triangle.

20. Wall element according to one of the preceding claims, characterized in that the wall membranes are made of a material which is tight against combat gases or the like.

21. Wall element according to claim 18, 19 or 20, characterized in that the intermediate wall membrane (1C) is coated with aluminum or another suitable material in order to achieve heat reflection and / or possibly also a shield against electromagnetic radiation.

22. Wall element according to one of claims 18 to 22, characterized in that the inner wall membrane (1A) is made of an easy-to-clean material.

23. Wall element according to one of the preceding claims, characterized in that the at least one rigid spacer element (2) is divided once or several times along its length, so that a folding of the wall element is made possible.

24. tent or hall construction using at least one wall element according to one of claims 1 to 23, characterized in that the at least one wall element forms a tunnel-shaped cross section with two side wall parts (80, 81) and a roof wall part connecting the side walls (90).

25. tent or hall construction according to one of claims 4 to 23 and 24, characterized in that the profile bars (55) for clamping wall membranes (1A, 1B) corresponding to the selected tunnel cross-section along a multiple kinked line starting at a first base point (101 ) and ending at a second base point (102) spaced from this, and that along the course of the profile bars (55) two wall membranes (1A, 1B) are clamped with spacer elements (2), so that between the two wall membranes the cavity (6) is trained.

26. tent or hall construction according to claim 25, characterized in that at the kink points of the tunnel cross-section the inside of the two wall membranes (1A, 1 B) is shortened in length by taking out a lens-like cutout and the cutout edges by a Velcro fastener (130) are connectable.

27. tent or hall construction according to claim 25 or 26, characterized in that along the side wall parts (80, 81) a further outer wall membrane (79) between the profiles (55) is stretched, which a ventilation space (95) between the further outer wall membrane ( 79) and the two wall membranes (1A, 1B).

28. Tent or hall construction according to claim 27, characterized in that a roof outer wall membrane (99) spaced apart from the roof wall part (30) forms a rear-ventilated cold roof space (120) between the roof wall part (30) and the roof outer wall membrane (99) ,