WO2024186254A1

WO2024186254A1 - Foundation including a beam structure

Info

Publication number: WO2024186254A1
Application number: PCT/SE2024/050206
Authority: WO
Inventors: Tue Beijer
Original assignee: Stilride AB
Priority date: 2023-03-07
Filing date: 2024-03-06
Publication date: 2024-09-12

Abstract

A foundation arrangement (10) comprising a plurality of separate three dimensional beam structures (1, 1', 1'', 1'''), wherein each beam structure (1) comprises a three dimensional elongate body (2) extending from a first end (3) to a second end (4), and wherein said first (3) end has a substantially triangular cross- section, and wherein said plurality of beam structures (1, 1', 1'', 1'''), when positioned juxtaposed to each other at their respective first ends (3, 3', 3'', 3'''), form a first end (5) of said foundation arrangement (10) having a substantially circular cross-section (8), and wherein said second end (4) of said beam structure (1) has a substantially two dimensional triangular shape.

Description

FOUNDATION INCLUDING A BEAM STRUCTURE

Technical field

The disclosure relates generally to a foundation arrangement comprising a plurality of three dimensional beam structures. In particular, the disclosure relates a foundation arrangement comprising three dimensional beam structures formed by a curve folding method.

Background

When building large outdoor structures, such as for instance bridges or wind power towers, major ground work is often needed to secure the foundation of the structure into the ground.

Further to this, the sites where some of these structures are built may not only be difficult to access, the ground site itself may also pose some challenges, such as being uneven.

There are many traditional ways of securing the foundation to the ground, including complicated drilling and wiring, and excavating a hole which is then filled with enormous amounts of concrete.

There is a need for an improved foundation structure which can be secured to or at the ground site in a more cost efficient and environmentally friendly way.

Summary

The invention is defined by the appended independent claims. Embodiments are set forth in the appended dependent claims and in the following description.

According to a first aspect of the disclosure, there is provided a foundation arrangement comprising a plurality of separate three dimensional beam structures, wherein each beam structure comprises a three dimensional elongate body extending from a first end to a second end, and wherein said first end has a substantially triangular cross-section, and wherein said plurality of beam structures, when positioned juxtaposed to each other at their respective first ends, form a first end of said foundation arrangement having a substantially circular cross-section, and wherein said second end of said beam structure has a substantially two dimensional triangular shape.

This foundation arrangement, and beam structure, allows for a stable foundation arrangement to be assembled, which can easily be adapted to a specific ground site. The beam structures may preferably be constructed through a curve folding method, which may even further be based on a ground specific scanning and modeling of the beam structure. The foundation arrangement may allow for a substantial reduction in material used for anchoring the foundation into the ground. The individual beam structures may be transported separately or assembled to the foundation arrangement to a specific ground site.

The elongate body may substantially have an irregular or regular quadilaterial shape and the elongate body may be bent such that the second end protrudes upwardly or outwardly as seen in a direction from a plane extending from a central axis of said first end.

The second end of said foundation arrangement may have has a circumferential cross-section that is larger than an approximate circumferential cross-section of said first end.

The foundation arrangement may comprise between two (2) and twelve (12) individual beam structures. The number and size of the beam structures may for instance depend on the ground site requirements and desired size of the foundation arrangement.

In one advantageous example, the foundation arrangement may comprises eight individual beam structures.

The second end of said arrangement may be adapted to be fastened to a ground site. As used herein “fastened to” is meant that it may be attached to the ground by conventional fasteners such as ground screws, or ground anchors. The second end of said arrangement may be adapted to be fastened by fastening each of the second ends of the beam structures at at least three (3) connecting points. The substantially triangular flattened, or outwardly bent shape of the second end of the beam structure allows for the structure to be attached to ground at at least three (3) points, which may ensure that the foundation will always stand steady on any ground site or material.

In one example, the second end of said arrangement may be adapted to be buried at a ground site.

In one alternative example, a section of said second end of said beam structure may be provided with multiple perforations. These perforations may for instance be penetrated by roots thus anchoring the foundation more firmly in the ground. In one alternative for installing the foundation, it may first be dug into the ground and plants, or root growing enhancing agent may be then be planted or added to the site, to allow for a more rapid growth of roots through the perforations. The foundation arrangement my thus be allowed to be anchored by the roots into the ground before attaching for instance a pole or a wind power tower to the foundation.

In one example, said second end of said beam structure and said second end of said foundation arrangement may be provided with a brim portion. The brim portion may also further allow for a better anchoring of the foundation in the ground, and may retain earth or soil.

In one example, the first end of said foundation arrangement may be adapted to be fitted with an elongate structure having a cross-section corresponding to the crosssection of the second end. The elongate structure may be any one of a tower, a pole, a mast, a pylon and a beam structure.

In one example, the elongate structure may be a wind power tower. The wind power tower may be adapted to be provided with wind power turbines.

In a second aspect, there is provided a foundation system comprising two foundation arrangements according to the first aspect, wherein said two foundation arrangements are arranged with the respective first ends or the respective beam structures of each foundation arrangement facing each other. This allows for the foundation system to be anchored to ground, while carrying for instance elongate structures, such as beams or bridge sections.

In a third aspect, there is provided a beam structure formed from a blank comprising a two dimensional sheet like material, and wherein said blank has the form of flattened truncated cone. This allows for the beam structure to be curve folded into the three dimensional shape of the elongate body.

According to a fourth aspect, there is provided a method of forming a three dimensional beam structure from a blank formed of a two dimensional sheet like material, wherein said blank has the form of a flattened truncated cone, wherein said method is performed by a computer device for use in the material processing of said blank, the method comprising: obtaining information related to a design of said three dimensional beam structure, obtaining information related to material characteristics of the two dimensional sheet like material, defining a primary surface and a secondary surface of the desired design of the beam structure, and defining a geometrical relationship between said primary surface and secondary surface, wherein the secondary surface is a reflection of the primary surface in a two dimensional plane, and wherein if said primary surface is concave said secondary surface is convex, or if said primary surface is convex said secondary surface is concave; providing a digital instruction for a fully developed spreading and subsequent folding of the two dimensional sheet into the obtained desired three dimensional design of the beam structure, wherein said subsequent folding is to be performed by a material processing tool by folding along a curve of the two dimensional sheet and wherein said curve is defined over a two dimensional plane, and said digital instruction being based on the defined primary and secondary surfaces, respectively, and said obtained material characteristics; and transmitting said digital instruction to said material processing tool for the spreading and subsequent folding of the two dimensional sheet by said material processing tool.

According to the fourth aspect, said blank may be curve folded along folding lines to form said beam structure.

In one advantageous example, the method for forming a beam structure may further comprise: performing a scanning of a ground site thereby rendering, by a computer device, a ground specific profile; calculating the size and shape of said beam structure based on said ground specific profile thereby obtaining a design of said three dimensional beam structure; and providing said design to said computer device. By scanning the ground where the foundation arrangement is to be placed, and manufacturing and folding the beam structures based on the scanning results, it may be possible to manufacture a foundation arrangement with minimal use of material, which is adapted to be fastened, secured or anchored to a specific ground site.

In one example, the scanning of the ground may be performed by any one of a sensor or a camera, or a combination thereof. The sensor, or camera may for instance be attached to drone adapted to fly over a ground site.

The material processing tool, may be located remotely from the computer device and may be an industrial robot.

In one example the sheet like material may be a metal, such as steel or aluminum.

In a fifth aspect, there is provided a beam structure formed through the method according to the fourth aspect.

The beam structure according to the fifth aspect may comprises a three dimensional elongate body extending from a first end to a second end, and wherein said first end has a substantially triangular cross-section, wherein said second end of said beam structure has substantially two dimensional triangular shape, wherein said elongate body substantially has an irregular or regular quadilaterial shape, and wherein said elongate body is bent such that the second end protrudes upwardly or outwardly as seen in a direction from a plane extending from an central axis of said first end.

The above aspects, accompanying claims, and/or examples disclosed herein above and later below may be suitably combined with each other as would be apparent to anyone of ordinary skill in the art. Additional features and advantages are disclosed in the following description, claims, and drawings, and in part will be readily apparent therefrom to those skilled in the art or recognized by practicing the disclosure as described herein.

Brief description of drawings With reference to the appended drawings, below follows a more detailed description of aspects of the disclosure cited as examples

Fig. 1 is an exemplary beam structure according to one example.

Fig. 2 is an exemplary foundation arrangement comprising multiple beam structures.

Fig. 3 is an exemplary foundation arrangement comprising multiple beam structures.

Fig. 4 is an exemplary foundation arrangement in a top view.

Fig. 5 is an exemplary foundation arrangement according to one alternative.

Fig. 6 is an exemplary foundation arrangement according to one alternative.

Figs 7a and 7b are exemplary foundation arrangements according to one alternative.

Fig. 8 is an exemplary blank for a beam structure.

Fig. 9 is an exemplary foundation arrangement comprising a wind tower.

Fig. 10 is an exemplary foundation structure comprising two foundation arrangements.

Fig. 11 is a schematic flow chart of a method for manufacturing a beam structure.

Fig. 12 shows the geometrical relationship between a primary and secondary surface.

Description of Embodiments

Fig 1 illustrates a beam structure 1. The beam structure has an elongate body 2, having a first end 3 and a second distal end 4. The elongate body is substantially a three dimensional body. At the first end 3 the elongate body 2 has a substantially triangular cross-section, i.e. a hollow three dimensional shape of a triangle or pie shape, and at the second end 4 the elongate body has a substantially two dimensional triangular shape, i.e. a flat or flattened shape. The elongate body 2 may have a substantially irregular or regular quadilaterial shape. This means that the elongate body may resemble a geometrical shape of a kite when seen in a front view, where the second end forms a flat or two dimensional kite shape and the first end forms a hollow structure, in the form of a pie wedge. A central axis A extends at the center of the first end. A plane P extends in line with said central axis. The elongate body 2 is folded or bent such that the second end 4 projects upwardly or outwardly from said plane P at a distance D, when the beam structure is viewed in a side view. In Fig. 1 the beam structure is illustrated in a side perspective view. The beam structure may be formed from a blank. The blank may be a substantially flat two dimensional sheet like material. The material may be a metal. The blank may be curve folded to form the beam structure. This allows for an efficient way of manufacturing the beam structures, reducing both weight and cost of production.

Fig. 2 illustrates a foundation arrangement 10. The foundation arrangement 10 comprises multiple beam structures 1, 1’, 1”, 1”’, 1””, 1””’, 1”””. The beam structures are positioned such that their respective first ends are juxtaposed at a first end 5 of the foundation arrangement, and their respective second ends 4 extend outwardly from a second end 6 of the foundation arrangement. In the exemplary arrangement 10 as shown in Fig. 2 there are eight beam structures arranged juxtaposed to each other. The beam structures 1 are arranged such that they substantially form wedges of a pie, i.e. having a hollow triangular cross-section or shape, with one comer 18 of the triangular shape of the first end 3 facing a center portion 19. The number of beam structures 1 making up the foundation arrangement may vary depending on the shape and size of the foundation arrangement, but may generally be in the range of 3 to 12. Preferably the number of beam structures is a foundation is 8, however the first end of the beam structure 1 may be designed such that the pie or wedge shape forms a circular shape or cross-section when put together.

Figs 3 and 4 illustrate that the first end 5 has a substantially circular cross-section 8, made up by the hollow triangular, or pie shaped, ends of each respective beam structure . The circumference of the first end 5 is smaller than the circumference of the second end 6, which is illustrated by the circular cross-section 9. The circular cross-section 9 thus defines a pie-shaped portion made up by the wedge-like beam structures. The second end 6 does not have an actual circular shape or cross-section per se, but exhibits a star-like projection, i.e. an imaginary circular shape when seen in a top view as illustrated by Fig. 4, which in comparison to the circumference of the first end is larger. The ends of the beam structures making up the second end thus exhibit a flat, or two dimensional form. This allows for the second end of the foundation to be firmly placed into the ground, or for the second end to hold another structure on top.

Fig. 4 illustrates one exemplary foundation arrangement 10, where the second end 4 of the beam structure 1 is provided with connection points 13, 13’, 13’ arranged at the comers of the triangularly shaped second end 4. The connection points form fastening positions for securing the foundation arrangement to the ground, using conventional fastening arrangements or means such as a bolt and screw.

Fig. 5 illustrates another exemplary foundation arrangement 10, where at least a portion 11 of the second end 4 of each beam structure 1 is provided with multiple perforations 7.

Figs 7a and 7b illustrate yet another exemplary foundation arrangement 10, where the second end 4 of each beam structure comprises a brim portion 17 extending upwards as seen in Fig. 7b.

Fig. 8 illustrates a blank 15 for forming the three dimensional beam structure 1. The blank substantially has the shape of a truncated and flattened out cone, i.e. a shape which at a first end, forming the first end 3 of the beam structure, has a width which is smaller than an opposing end, i.e. forming the second end 4 of the beam structure, and where the sides are equal. The blank may be a substantially flat two dimensional sheet like material. The material may be a metal. The blank may be curve folded along the folding lines 16, 16’ to form the beam structure 1.

Fig. 9 illustrates an exemplary foundation arrangement 10 provided with an elongate structure 14. The elongate structure in Fig. 9 is shown as a wind power tower extending in an vertical direction from the foundation arrangement 10, but this should not be seen as limiting. The elongate structure 14 may be a tower, a pole, a pile or a even a construction extending in a horizontal plane. This is shown in Fig. 10. The cross-section of the elongate structure is preferably similar to the cross-section 8 of the foundation arrangement. The elongate structure may be attached to the foundation by sliding the elongate structure over the foundation arrangement, or by fastening the elongate structure by any conventional fastening arrangements. In one example, such as for a wind power tower, the foundation arrangement may be designed to extent vertically such that the elongate structure is the wind power turbine arrangement, placed directly onto the foundation. In another alternative, the foundation arrangement is a stand alone provided with for instance mobile transmitter, wind power turbines or similar devices at the first end 4.

Fig. 10 illustrates a foundation system or structure 20 comprising two foundation arrangements 10, 10’, which are joined at their respective first ends 5, 5’. This type of system 20 may for instance be adapted to be fitted with horizontally extending elongate structures 21, such as beams or bridge constructions.

The three dimensional beam structure 1 or elongate body 2 may be manufactured or formed by curve folding the blank 15. In the manufacturing process or method, as illustrated by the method flow chart of Fig. I l a computer device 102 is used in the material processing of said blank, the method comprising: obtaining 101 information related to a design of said three dimensional beam structure, obtaining 102’ information related to material characteristics of the two dimensional sheet like material. Fig. 12 illustrates that in step 102”a primary surface and a secondary surface of the desired design of the beam structure may be defined (the blank 15 of Fig. 8 has been simplified in Fig. 12 to a rectangular sheet material), and defining 102’ a geometrical relationship 102’” between said primary surface and secondary surface, wherein the secondary surface SS is a reflection of the primary surface PS in a two dimensional plane, and wherein if said primary surface PS is concave said secondary surface SS is convex, or if said primary surface PS is convex said secondary surface SS is concave. A digital instruction for a fully developed spreading 103 and subsequent folding 104 of the two dimensional sheet into the obtained desired three dimensional design of the beam structure is then provided, wherein said subsequent folding is to be performed by a material processing tool by folding along a curve CF (i.e. the folding lines 16, 16’ of Fig. 8) of the two dimensional sheet. The curve may be defined over a two dimensional plane, and said digital instruction being based on the defined primary and secondary surfaces, respectively, and said obtained material characteristics. The digital instruction may be transmitted or otherwise provided to a material processing tool for the spreading 103 and subsequent curve folding of the two dimensional sheet by said material processing tool. The blank 15 is thus curve folded along folding lines 16, 16’ to form said beam structure 1.

In order to obtain the specific dimensions and structure of the beam structure method may also comprise performing a scanning of a ground site where the foundation arrangement is to be placed, thereby rendering, by a computer device, a ground specific profile; calculating the size and shape of said beam structure based on said ground specific profile thereby obtaining a design of said three dimensional beam structure; and providing said design to said computer device 102.

The scanning of the ground may be performed by any one of a sensor or a camera, or a combination thereof.

The material processing tool may be located remotely from the computer device 102, and may be an industrial robot.

Fig. 11 thus illustrates the method for material processing of a two dimensional sheet like material, i.e. the blank 15. In step 101 information related to a design of a three dimensional object, i.e. the beam structure 1, is provided to a computer device 102. In other words, the computer device obtains (e.g., receives) information related to a design of the beam structure. The computer device may be any suitable data processing device, but is generally a computer implementing software advantageously for design and constructional computer programs such as computer-aided design (CAD). The inventive method may for instance be implemented as an add-on program for any conventional CAD software. Generally the design is created in a CAD program and the inventive method may for instance be applied to the design through the computer device.

Information related to material characteristics, such as the type of material or the thickness, is provided 102’ to said computer device, for instance by an operator feeding the specific data into to computer machine, or alternatively by using automated or integrated processes for defining the material characteristics. In other words, the computer device 102 obtains (e.g., receives) the information related to the material characteristics. In step 102” the computer device 102 defines, or otherwise determines, at least one primary surface and at least one secondary surface of the design, and a geometrical relationship 102”’ between said primary surface and secondary surface. The determination of the primary and secondary surface is performed through mathematical operations known to the skilled person, which must be combined with the material characteristics in order to achieve the desired result of the method according to the invention, i.e. the digital instruction for spreading and subsequent folding 104 of a two dimensional sheet, such as the blank 15, into a three dimensional shape or object, such as the beam structure 1.

The output from the computer device is a digital instruction for spreading 103, which is a fully developed spread of the beam structure 1 onto the two dimensional sheet, i.e. the blank 15. In a fully developed spread all surfaces are connected or attached, as opposed to a conventional spread where the surfaces that subsequently form a three dimensional shape must be cut out to of individual pieces that are pieced together by for instance welding, by the inventive method each curve fold thus eliminates one welding section. This means that after the folding process the three dimensional object could be unfolded to a whole two dimensional sheet again. In the fully developed spread the curve along which the fold is to be made is thus defined over a two dimensional plane. The digital instruction may also comprise instructions for cutting said two dimensional sheet if needed. In those cases, the surfaces may be welded, e.g. laser welded, in a two dimensional phase and then folded into the three dimensional shape or design object.

The inventive method thus requires a combination of the geometrical rules and the material characteristics to create the digital instruction and the definition of the secondary surface needed for the fully developed spread.

Illustrated in Fig. 12 is the general geometrical relationship between the secondary surface SS and primary surface PS which is determined by the geometrical rules for folding or bending a sheet material along a curve fold CF. As illustrated the secondary surface SS is a reflection of the primary surface PS in a two dimensional plane, 2D plane. Further, if said primary surface PS is concave said secondary surface SS is convex, or if said primary surface PS is convex said secondary surface SS is concave.

Aspects set forth below represent the necessary information to enable those skilled in the art to practice the disclosure.

The terminology used herein is for the purpose of describing particular aspects only and is not intended to be limiting of the disclosure. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. It will be further understood that the terms "comprises," "comprising," "includes," and/or "including" when used herein specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It will be understood that, although the terms first, second, etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element without departing from the scope of the present disclosure.

Relative terms such as "below" or "above" or "upper" or "lower" or "horizontal" or "vertical" may be used herein to describe a relationship of one element to another element as illustrated in the Figures. It will be understood that these terms and those discussed above are intended to encompass different orientations of the device in addition to the orientation depicted in the Figures. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element, or intervening elements may be present. In contrast, when an element is referred to as being "directly connected" or "directly coupled" to another element, there are no intervening elements present.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. It will be further understood that terms used herein should be interpreted as having a meaning consistent with their meaning in the context of this specification and the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

It is to be understood that the present disclosure is not limited to the aspects described above and illustrated in the drawings; rather, the skilled person will recognize that many changes and modifications may be made within the scope of the present disclosure and appended claims. In the drawings and specification, there have been disclosed aspects for purposes of illustration only and not for purposes of limitation, the scope of the inventive concepts being set forth in the following claims.

Claims

1. A foundation arrangement (10) comprising a plurality of separate three dimensional beam structures (1, 1’, 1”, 1”’), wherein each beam structure (1) comprises a three dimensional elongate body (2) extending from a first end (3) to a second end (4), and wherein said first (3) end has a substantially triangular cross-section, and wherein said plurality of beam structures (1, 1’, 1”, 1”’), when positioned juxtaposed to each other at their respective first ends (3, 3’, 3”, 3”’), form a first end (5) of said foundation arrangement (10) having a substantially circular cross-section (8), and wherein said second end (4) of said beam structure (1) has a substantially two dimensional triangular shape.

2. The foundation arrangement (10) as claimed in claim 1, wherein said elongate body (2) substantially has an irregular or regular quadilaterial shape.

3. The foundation arrangement (10) as claimed in any one of claims 1 or 2, wherein said elongate body (2) is bent such that the second end (4) protrudes upwardly or outwardly as seen in a direction (D) from a plane (P) extending from an central axis (A) of said first end (3).

4. The foundation arrangement (10) as claimed any one of claims 1 to 3, wherein a second end (6) of said foundation arrangement has a circumferential crosssection (9) that is larger than an approximate circumferential cross-section (8) of said first end (5).

5. The foundation arrangement (10) as claimed in any one of claims 1 to 4, wherein said foundation arrangement (10) comprises between 2 and 12 individual beam structures (1).

6. The foundation arrangement (10) as claimed in claim 5, wherein the foundation arrangement comprises eight individual beam structures (1).

7. The foundation arrangement (10) as claimed in any one of claims 1 to 6, wherein said second end (5) of said arrangement is adapted to be fastened to a ground site.

8. The foundation arrangement (10) as claimed in claim 7, wherein said second end (6) of said arrangement is adapted to be fastened by fastening each of the second ends (4) of the beam structures at at least three connecting points (13, 13’, 13”).

9. The foundation arrangement (10) as claimed in any one of claims 1 to 8, wherein said second end (6) of said arrangement is adapted to be buried at a ground site.

10. The foundation arrangement (10) as claimed in claim 9, wherein at least a section (11) of said second end (4) of said beam structure (1) is provided with multiple perforations (7).

11. The foundation arrangement (10) as claimed in any one of the preceding claims, wherein said second end (4) of said beam structure (1) and said second end (6) of said foundation arrangement (10) is provided with a brim portion (17).

12. The foundation arrangement (10) as claimed in any one of claims 1 to 11, wherein said first end (5) of said foundation arrangement is adapted to be fitted with an elongate structure (14) having a cross-section corresponding to the cross-section of the second end.

13. The foundation arrangement (10) as claimed in claim 12, wherein said elongate structure (14) is any one of a tower, a pole, a mast, a pylon and a beam structure.

14. The foundation arrangement as claimed in claims 12 or 13, wherein said elongate structure (14) is a wind power tower, and wherein the wind power tower is adapted to be provided with wind power turbines.

15. A foundation system (20) comprising two foundation arrangements (10, 10’) as claimed in any one of claims 1 to 10, wherein said two foundation arrangements (10, 10’) are arranged with the respective first ends (5, 5’) or the respective beam structures of each foundation arrangement (10, 10’) facing each other.

16. A beam structure (1) formed from a blank (15) comprising a two dimensional sheet like material, and wherein said blank has the form of flattened truncated cone.

17. A method of forming a three dimensional beam structure from a blank formed of a two dimensional sheet like material, wherein said blank has the form of a flattened truncated cone, wherein said method is performed by a computer device (102) for use in the material processing of said blank, the method comprising: obtaining (101) information related to a design of said three dimensional beam structure, obtaining (102’) information related to material characteristics of the two dimensional sheet like material, defining (102”) a primary surface and a secondary surface of the desired design of the beam structure, and defining (102’) a geometrical relationship (102’”) between said primary surface and secondary surface, wherein the secondary surface (SS) is a reflection of the primary surface (PS) in a two dimensional plane, and wherein if said primary surface (PS) is concave said secondary surface (SS) is convex, or if said primary surface (PS) is convex said secondary surface (SS) is concave; providing a digital instruction for a fully developed spreading (103) and subsequent folding (104) of the two dimensional sheet into the obtained desired three dimensional design of the beam structure, wherein said subsequent folding is to be performed by a material processing tool by folding along a curve (CF) of the two dimensional sheet and wherein said curve is defined over a two dimensional plane, and said digital instruction being based on the defined primary and secondary surfaces, respectively, and said obtained material characteristics; and transmitting said digital instruction to said material processing tool for the spreading (103) and subsequent folding (104) of the two dimensional sheet by said material processing tool.

18. The method for forming a beam structure (1) as claimed in claim 17, wherein said blank (15) is curve folded along folding lines (16, 16’) to form said beam structure (1).

19. The method for forming a beam structure as claimed in claim 17 or 18 further comprising: performing a scanning of a ground site thereby rendering, by a computer device, a ground specific profile; calculating the size and shape of said beam structure based on said ground specific profile thereby obtaining a design of said three dimensional beam structure; and providing said design to said computer device (102).

20. The method as claimed in claim 19, wherein said scanning of the ground is performed by any one of a sensor or a camera, or a combination thereof.

21. The method according to any one of claims 17 to 20, wherein the material processing tool, is located remotely from the computer device (102).

22. The method according to any one of claims 17 to 21, wherein the material processing tool is an industrial robot.

23. The method according to anyone of claims 17 to 22, wherein said sheet like material is a metal.

24. A beam structure (1) formed through the method as claimed in any one of claim 17 to 23.

25. The beam structure (1) as claimed in claim 24, wherein said beam structure (1) comprises a three dimensional elongate body (2) extending from a first end (3) to a second distal end (4), and wherein said first (3) end has a substantially triangular cross-section, wherein said second end (4) of said beam structure (1) has substantially two dimensional triangular shape, wherein said elongate body (2) substantially has an irregular or regular quadilaterial shape, and wherein said elongate body (2) is bent such that the second end (4) protrudes upwardly or outwardly as seen in a direction (D) from a plane (P) extending from an central axis (A) of said first end (3).