Laminated wood beam construction and method for manufacturing laminated wood beam construction

Abstract

The present invention relates to a glulam beam structure comprising: a plurality of glulam beam elements, each glulam beam element having substantially two opposite end faces, each glulam beam element having at least one channel extending between the two opposite end faces of the glulam beam element, the glulam beam elements being joined together at their respective end faces, and the joined end faces having respective positioning elements for the exact positioning of adjacent glulam beam elements; a tension element, the one tension element being passed through the at least one channel and extending along the entire length of the glulam beam structure;and fastening elements at the ends of the tension element for fastening the ends of the tension element and for bracing the glulam support structure in an assembled state, the fastening elements engaging the respective ends of the glulam support structure;

Description

[0001] The present invention relates to a glued laminated timber support structure and a method for producing the glued laminated timber support structure.

[0002] The present invention also relates to a glued laminated timber beam element for use in a glued laminated timber beam structure.

[0003] Glued laminated timber (or glulam for short) is a board consisting of multiple layers of planks and wood glued together in the same grain direction. Depending on the thickness of the layers, a distinction is sometimes made in the art between glued laminated timber and cross-laminated timber, with cross-laminated timber being a composite of thicker boards and cross-laminated timber being a composite of thinner boards. According to the invention, a composite of multiple layers of planks and wood glued together in the same grain direction is referred to as glued laminated timber, regardless of the thickness of the boards.

[0004] State-of-the-art glulam beam structures are manufactured in a wide variety of designs: for example, as floor beams, parallel beams, gable roof beams with raised and straight bottom chords, arched beams, roof beams, bridge beams, and more. To accommodate transverse tensile stresses, reinforcement, usually metal rods (e.g., 16 mm threaded rods), is typically used in the ridge area of ​​glulam beam structures, vertical to the transverse tensile stress. This increases the load-bearing capacity or extends the structure length.

[0005] For large spans, transverse tensile stress also imposes limitations and constraints on state-of-the-art glulam beam structures, which can only be partially improved with raised ridges and reinforcements as discussed above. Carpenter's and engineer's longitudinal connections—which are state-of-the-art in timber construction—cannot be used for the longitudinal connection of glulam beam structures, as the tensile forces cannot be transferred force-fittedly to the connections between the individual glulam beam elements.

[0006] Due to the production of one-piece, prefabricated glulam beam structures in the production facility, the dimensions are very limited in the current state of the art – primarily due to transport to the installation site in terms of width, height, and length. At the construction site / installation site, these conventional glulam beam structures are simply moved and anchored.

[0007] JP2021130957A discloses a timber beam structure formed from a plurality of beams. The individual beams are made of laminated wood, with each beam being formed with a plurality of reinforced tubular members for the passage of respective steel cables. The tubular members are formed from materials that have higher compressive strength and rigidity than the beams. For example, materials such as metals, such as iron and aluminum, as well as fiber-reinforced resins can be used for reinforcement. The steel cables serve to connect the beams at their end faces to form the timber beam structure. The known timber beam structure is disadvantageous in that the precise joining of the beams of the structure at their end faces is problematic.

[0008] From JP2020133212A, a similar timber support structure made of laminated wooden panels is known, which are connected at their end faces by steel cables passing through them.

[0009] DE102011079130A1 discloses a shear- and tensile-loadable load-bearing and support structure for high-rise buildings. It comprises shear-resistant shear elements and tension cords arranged in longitudinal channels with tensile stress. The tension cords can be mounted continuously across several coaxially abutting shear elements. Metal profiles extending transversely to their longitudinal axes are mounted between the abutting shear elements and at the free ends of the abutting shear elements. These metal profiles, in turn, can be connected to other structural components and coupled to the tension cords as tie rods. This known construction is disadvantageous in that it is complex in construction and also expensive.

[0010] AT17984U1 discloses a glulam beam structure consisting of a large number of glulam elements, each with one or more integrated, prestressed steel cables or tension bands in its lower section to absorb the tensile stresses. This is intended to enable a reduction in the beam's cross-section. This known glulam beam structure is disadvantageous in that the precise joining of the elements at their end faces is problematic.

[0011] DE10164414A1 discloses a load-bearing element made of a wood-concrete composite. The composite consists of a laminated truss connected to a concrete flange surface placed on top. The laminated truss is provided with a groove through which a wire rope is guided as a prestressing element. The wire rope is attached to the end faces of the load-bearing element by respective anchors. The wire rope is intended to transfer tension forces from the load-bearing element. Similar to the previously discussed prior art, DE10164414A1 has the disadvantage that the load-bearing element does not allow for precise joining to an adjacent load-bearing element at its end face. Furthermore, the structure of the load-bearing element is complex and, due to the combination of concrete and wood, is not sustainable.

[0012] DE8325486U1 describes a bending-loadable, reinforced wooden beam, with a respective groove in each of the opposing surfaces in the compression and tension zones in the longitudinal direction of the beam. A steel rod is accommodated in each groove, or a steel rod in the groove belonging to the tension zone, and a fiber strand or fiber cord is accommodated in the groove belonging to the compression zone as reinforcement. This reinforcement is embedded in a hardened plastic material that adheres to the reinforcement and the groove wall, so that the beam is fixed in a bent position under the influence of the reinforcement, forming an arch. The solution of DE8325486U1 is also complex and, moreover, limited in its scope.

[0013] In view of the above prior art, it is an object of the invention to provide a glued laminated timber beam structure which eliminates the disadvantages of the prior art.

[0014] Within the scope of this task, one aim of the invention is to provide a glued laminated timber support structure that is easy to transport and can be easily and precisely assembled at the installation site.

[0015] A particular object of the present invention is to provide a glulam support structure which is adjustable even after its assembly in order, for example, to compensate for material fatigue of the glulam support elements.

[0016] A further object of the invention is to provide an advantageous glued laminated timber beam element.

[0017] These and other objects and aims, which can be gathered from the following description, are achieved by a glued laminated timber support structure according to claim 1, a glued laminated timber support element according to claim 14, and a method for producing the glued laminated timber support structure according to claim 15. Further advantageous embodiments are specified in the dependent claims.

[0018] The invention will now be explained below with reference to the description and figures, without being limited thereto. In the figures: Fig. 1 a perspective view of a glued laminated timber beam element according to a first embodiment, which can be used in a glued laminated timber beam structure according to the invention; Fig. 1A a perspective view of a glued laminated timber beam element according to a second embodiment, which can be used in a glued laminated timber beam structure according to the invention; Fig. 2 a perspective view of a section of the glued laminated timber support structure according to the invention with glued laminated timber support elements according to the first embodiment; Fig. 3 a perspective view of the glued laminated timber support structure according to the invention, preferably designed as a bridge, in a state installed at the site of use; Fig. 3A a detailed view of the glued laminated timber support structure according to the invention, preferably designed as a bridge, with two supports; Fig. 4A a first embodiment of a positioning element of the invention in a flat glued laminated timber support structure according to the invention; Fig. 4B the first embodiment of the positioning element of the invention in a curved glued laminated timber support structure according to the invention; Fig. 5 a second embodiment of the positioning element of the invention in an unassembled glued laminated timber support structure according to the invention; Fig. 6 the second embodiment of the positioning element of the invention in an assembled glued laminated timber support structure according to the invention.

[0019] In general, the invention describes a completely new procedure for manufacturing a glulam beam structure. The beam structure is divided into individual glulam beam elements, which are prefabricated in production facilities and assembled with tension elements at the site of use. This allows the creation of load-bearing structures with extra-large spans. Positioning elements on the end faces of the glulam beam elements facilitate their assembly and also the bracing of the structure with the tension elements.

[0020] Glulam beam elements are advantageous because their size and shape are limited only by transport. As explained, they are created by gluing several pieces of wood together to form a single large component and are limited only by the tensile strength of the wood used. Using tension elements, glulam beam structures can be manufactured up to the compressive strength of the wood used. Glulam beam elements can also be manufactured in a variety of shapes.

[0021] Glulam is generally versatile because its size and shape are so variable. Glulam can therefore be used as both a beam and a column.

[0022] Glulam has a higher strength-to-weight ratio than concrete and steel. Glulam also reduces the effects of wood defects on the strength of the component, making it stronger than sawn timber. Glulam has also been proven to have greater resistance to lateral torsional buckling than steel.

[0023] Glulam production requires much less energy than reinforced concrete and steel, as it can be used for much longer spans, heavier loads, and more complex shapes than reinforced concrete or steel. The energy required for production is only one-sixth of that required for steel of comparable strength. Because glued laminated timber is a wood product, it naturally captures carbon, which is not released into the atmosphere. As long as the wood used to produce glued laminated timber comes from sustainably managed forests, glued laminated timber is a renewable resource.

[0024] Although glulam is naturally flammable because it is made of wood, when it catches fire, a layer of charcoal forms that protects the interior of the beam and thus maintains the strength of the beam for some time.

[0025] With reference to the Figuren 1 bis 6 a glued laminated timber support structure 1 according to the invention with the associated glued laminated timber support elements 2 is shown.

[0026] The glulam support structure 1 according to the invention comprises a plurality of glulam support elements 2, which, as illustrated in the figures, are formed as cuboids. Preferably, the glulam support element 2 can be formed as a cuboid with two equal edge lengths, in which case the ratio of the edge length of one of the equal edges to the third edge (height) is approximately 1 / 3 to approximately 1 / 10. Other geometric shapes, such as a cylinder, for example, a right cylinder with a circular or elliptical cross-section, or a prism, for example, a right prism, are also conceivable. According to the invention, the term "cuboid" also includes cuboids curved between the end faces or cuboids with one or more beveled end faces. The same applies to the terms "prism" or "cylinder."

[0027] According to the invention, the glulam beam elements 2 can have any geometric shape, provided that the individual elements can be assembled to form a beam structure. Glulam beam elements 2 are also conceivable according to the invention that have a curved or arched shape in the side view of the assembled beam structure, so that the glulam beam elements 2 can be assembled to form an arched glulam beam structure 1. The arched design is advantageous, for example, when the glulam beam structure 1 is used as a bridge girder.

[0028] In the illustrated embodiments, in which each glulam support element 2 is preferably substantially cuboid-shaped, the support element 2 has two opposite end faces 11 in the longitudinal direction of the glulam support structure 1. Each glulam support element 2 has at least one channel 4, which runs between the two opposite end faces 11 of the glulam support element 2. Fig. 1 has a channel 4 and the Fig. 1A has two channels 4. The number of channels 4 can be varied.

[0029] When the glued laminated timber support structure 1 is arranged horizontally, two channels can be used, as shown in the Fig. 1A shown, can be advantageous. However, it has been shown according to the invention that, due to the positioning elements according to the invention described below, a single channel 4 per support element 2 is sufficient to absorb the tensile forces, since the positioning elements align the glulam support elements 2 precisely with one another and additionally improve the stability of the connection between the support elements 2.

[0030] Preferably, the positioning elements prevent the glulam beam elements 2 from shifting relative to each other with at least one degree of freedom. Thus, the tension elements described below advantageously primarily meet the requirements for tensile and transverse tensile strength as well as the tensioning function of the glulam beam elements 2 of the structure 1. In this case, too, the number of channels 4 can be increased, particularly depending on the requirements of the tensile function of the tension elements.

[0031] To form the glued laminated timber support structure 1, as shown in the Figuren 2 , 3 , 3A , 4A , 4B and 6 shown, according to the invention, the glued laminated timber support elements 2 are joined together at their respective end faces 11, wherein the joined end faces 11 have respective positioning elements 9, 10 for the exact positioning of adjacent glued laminated timber support elements 2.

[0032] Preferably, the respective positioning elements 9, 10 are formed on the respective end faces 11 of adjacent glulam beam elements 2 in order to prevent displacement of the glulam beam elements 2 with at least one degree of freedom in a plane. Within the scope of this advantageous embodiment, the respective positioning elements 9, 10 on the respective end faces 11 of adjacent glulam beam elements 2 can be formed as a tongue and groove connection (for example Figuren 2 and 3A ); or the respective positioning elements 9, 10 on the respective end faces 11 of adjacent glued laminated timber support elements 2 can be designed as a cross-tongue and groove connection ( Figuren 5 and 6 ) or they can be formed as further precise connections known to the person skilled in the art.

[0033] As in the Figuren 1 bis 6 As shown, the glulam support structure 1 according to the invention comprises one tension element 3 per channel 4, wherein the tension element 3 is guided through the at least one channel 4 and extends along the entire length of the glulam support structure 1. Of course, the number of tension elements 3 can vary in accordance with the number of channels 4.

[0034] According to the invention, fastening elements 6 are provided at the ends of the tension element 3 for fastening the ends of the tension element 3 and for bracing the glulam support structure 1 in an assembled state, wherein the fastening elements 6 engage the respective ends 12 of the support structure 1. Of course, if the number of tension elements 3 is increased, a corresponding number of fastening elements 6 will be provided, namely two fastening elements 6 per tension element 3.

[0035] According to an advantageous aspect of the invention, at least one of the fastening elements 6 is further designed for the variable bracing of the glulam support elements 2 in the assembled state, wherein the fastening element 6 for the variable bracing of the glulam support elements 2 is preferably designed as a threaded screw with an associated washer that engages with one end 12 of the glulam support structure 1, wherein the threaded screw can further preferably be tensioned or re-tensioned to adjust the strength of the glulam support structure 1 as required, in order to adjust the tension of the glulam support structure 1 or to readjust it in the event of material fatigue. Material fatigue can, for example, be a weather- or age-related change. If a single tension element 3 is present, the further fastening element 6 of the single tension element 3 can be designed as a stop.However, the fastening elements 6 can also be of the same design. The same applies if additional tension elements are provided.

[0036] If two channels 4 are present, they run essentially parallel to each other and between the two opposite end faces 11 of the glulam beam element 2, and the tension elements 3 are passed through the corresponding channel 4 and extend along the entire length of the glulam beam structure 1. If a single channel 4 is present, in the case of horizontal beams, in the assembled state of the glulam beam structure 1, this channel preferably runs at the bottom between two opposite end faces 11 of the glulam beam element 2, since this is where the greatest tensile forces occur. The channels 4 can be arranged in one plane of the glulam beam element 2 or in different planes of the glulam beam element 2.

[0037] The channel(s) 4 can preferably be designed as empty pipes through which a corresponding tension element 3 is passed, and the tension element(s) is / are advantageously designed as cables, in particular steel cables. A design as a rod, in particular a steel rod, is also possible.

[0038] The glulam beam elements 2 can be flat or curved, as seen in the side view of the assembled beam structure. Thus, the glulam beam structure 1 can be advantageously adapted to the desired profile.

[0039] In a further advantageous embodiment, as in the Fig. 4B shown and deviating from the Fig.4A (wherein the end faces 11 run perpendicular to the plane of the support element 2), at least two respective end faces 11 of adjacent glued laminated timber support elements 2 are bevelled to the plane of the support element 2 in order to realize glued laminated timber construction 1 which has a corresponding profile in the side view in the assembled state of the support structure.

[0040] Particularly preferably, the tension elements 3 have a higher tensile strength than the tensile strength of the applicable cross-section of the glued laminated timber beam elements 2. Thus, a significant extension of the glued laminated timber beam structure 1 (span / load-bearing capacity) or the minimization of the cross-section of the glued laminated timber beam elements 2 can be achieved.

[0041] At least one end 12 of the glued laminated timber support structure 1 can, as shown in the Fig. 3A shown, be equipped with a plate-shaped end element 5, into which the fastening elements 6 engage. Preferably, the end element 5 has a higher rigidity than the glued laminated timber support elements 2 and is made of metal, for example. The end element 5 can be used both in designs with several glued laminated timber support structures 1, as in Fig. 3A shown as well as in designs of a single cross-sawn timber support structure 1.

[0042] Glulam beam elements 2 are particularly preferably recyclable, wherein, in particular, the glued laminated timber beam elements 2 are not contaminated and / or the glued laminated timber beam elements 2 are recyclable. Due to the simple assembly and disassembly of the glued laminated timber beam structure, additional parts, such as tension elements, fastening elements, end elements, and the like, can be easily removed, so that the glued laminated timber beam elements 2 are essentially recyclable or reusable without further treatment or processing.

[0043] According to an advantageous aspect of the invention, the glulam support structure 1 has a length of at least 12 m, preferably of at least 40 m and more preferably of at least 100 m across all glulam elements 2, and / or the glulam support structure 1 has a minimum payload of 3,200 kg so that it can support conventional vehicles.

[0044] The glued laminated timber support structure 1 can be designed, for example, as a parallel girder or as a gable roof girder with a straight / raised bottom chord or as an arch girder or as a bridge girder or as a roof girder and the like.

[0045] Preferably, the horizontally formed glued laminated timber support structure 1 can have a concave or a flat outline when viewed from the ground.

[0046] The Figuren 3 and 3Ashow a possible design of the glulam support structure 1 as a bridge girder, wherein the bridge is constructed with two glulam support structures 1, connecting elements 13 in between, and supporting decks 14. The bridge has vertical posts 7 and railings 8 supported thereon. Of course, the design with two glulam support structures 1 and the connecting elements 13 in between can also be used as a girder for other structures.

[0047] The invention also relates to a method for producing the glued laminated timber support structure 1 as described above, which comprises: Providing a plurality of glulam elements 2; Precise joining of the glulam elements 2 at their end faces 11 by means of the positioning elements 9, 10 such that the respective channels 4 of the glulam elements 2 are aligned with one another; Passing of the respective tension elements 3 through the corresponding channel 4 over the entire length of the glulam support structure 1; Attaching the fastening elements 6 to the respective ends of the tension elements 3 and in engagement with the respective ends 12 of the glulam support structure 1; and Bracing the tension elements 3 with the respective fastening elements 6 at at least one respective end of the tension elements 3 against a corresponding end 12 of the glulam support structure 1 in order to press the glulam elements 2 together, wherein the bracing is preferably carried out hydraulically or manually with a tool.

[0048] The invention also relates to glulam support elements 2 for use in a glulam support structure 1, preferably as described above, wherein the glulam support element 2 is preferably substantially cuboid-shaped and has two opposite end faces 11, wherein the glulam support element 2 has at least one channel 4 which runs between the two opposite end faces 11 of the glulam support element 2, wherein the glulam support element 2 has respective positioning elements 9, 10 on its end faces 11 for exact positioning on adjacent glulam support elements 2 and wherein the channel 4 is designed to guide a tension element 3 through for bracing the glulam support structure 1 in an assembled state.

[0049] Preferably, the respective positioning elements 9, 10 are formed on the respective end faces 11 of adjacent glulam beam elements 2 in order to prevent displacement of the glulam beam element 2 with respect to adjacent glulam beam elements 2 with at least one degree of freedom in a plane. Further preferably, the respective positioning elements 9, 10 on the respective end faces 11 are formed as elements of a tongue and groove connection. Alternatively, the respective positioning elements 9, 10 on the respective end faces 11 can be formed as elements of a cross tongue and groove connection.

[0050] The invention fully fulfills its tasks and objectives.

[0051] It overcomes the limitations of dimensioning (especially spans) in production and transport and significantly increases the tensile strength beyond that of the wood used in the glulam beams by dividing the glulam beam structure into glulam beam elements. The tensile elements significantly increase the tensile and shear forces of the beam structure. This subdivision significantly improves production and transport conditions, as well as application possibilities.

[0052] This subdivision of the BSH support structure into BSH support elements is achieved with the invention by the tension element or the tension elements in the BSH support elements, the tension element or the tension elements provide / provide the bending requirements / tensile stresses of the BSH support structure as required.

[0053] At least one channel is formed in the glulam support elements - preferably as empty piping - into which the tension elements - preferably cables - are inserted and tensioned during assembly at the site in order to press the glulam support elements together seamlessly as required (according to static requirements).

[0054] With the invention - the subdivision of the glulam support structure into glulam support elements and the inventive use of tension elements - it is possible to significantly optimize the most diverse glulam support types - e.g. ceiling beams, parallel beams, gable roofs with straight / raised bottom chord, arched beams, bridges, etc. - and to increase the possible spans of the glulam support structure.

[0055] With the help of tension elements, the tensile strength of the glulam beam structure can be increased as needed. The tension elements are positioned in the optimal tension zone of the glulam beam structure and are fixed and tensioned at the outer end faces (the beginning and end of the beam structure). The inventive use of tension elements eliminates excessive dimensioning sections in the tension zone of the glulam beams. This allows for the production of a material-saving glulam beam structure.

[0056] Re-tensioning of the tension elements on both sides is preferably possible with threaded ends or threaded screws. To allow tensioning at only one end, the tension element can also be redirected – preferably via rollers. One-sided tensioning is also possible if a first fastening element is designed as a threaded screw and a second fastening element as a stop.

[0057] In order to facilitate the exact positioning of the elements at the installation site during assembly, it is advantageous to provide provisions - e.g. tongue and groove cross, as well as empty pipes in the compression area of ​​the glulam support structure - for fixing by means of tension elements designed as a rope or rod. List of reference symbols:

[0058] 1Glued laminated timber support structure 2Glued laminated timber support element 3Tension element 4Channel - preferably empty piping 5End element 6Fastening element 7Post 8Railing 9Tongue 10Tone 11End face of the glulam element 12End of the glulam support structure 13Connecting element 14Running plate

Claims

1. Glulam beam structure (1), comprising: a plurality of glulam beam elements (2), each glulam beam element (2) having two opposite end faces (11), each glulam beam element (2) having at least one channel (4) running between the two opposite end faces (11) of the glulam beam element (2), the glulam beam elements (2) being joined together at their respective end faces (11), and the joined end faces (11) having respective positioning elements (9, 10) for the exact positioning of adjacent glulam beam elements (2); a tension element (3), the one tension element (3) being guided through the at least one channel (4) and extending along the entire length of the glulam beam structure (1);and fastening elements (6) at the ends of the tension element (3) for fastening the ends of the tension element (3) and for bracing the glulam support structure (1) in an assembled state, wherein the fastening elements (6) engage the respective ends (12) of the glulam support structure (1); 2. Glulam support structure (1) according to claim 1, wherein each glued laminated timber support element (2) is substantially prism-shaped or cylindrical, preferably substantially cuboid.

3. Glulam support structure (1) according to claim 1 or 2, wherein at least one of the fastening elements (6) is further designed for the variable bracing of the glulam support elements (2) in the assembled state, wherein the fastening element (6) for the variable bracing of the glulam support elements (2) is preferably designed as a threaded screw which engages with one end (12) of the glulam support structure (1), wherein further preferably the threaded screw can be tensioned or re-tensioned to ensure the strength of the glulam support structure (1) as required, in order to set a tension in the glulam support structure (1) or to readjust it in the event of material fatigue.

4. Glulam support structure (1) according to one or more of the preceding claims, which has at least two channels (4) running substantially parallel to one another and between the two opposite end faces (11) of the glulam support element (2) and tension elements (3) corresponding to the number of channels (4), wherein each tension element (3) is guided through a corresponding channel (4) and extends along the entire length of the glulam support structure (1).

5. Glulam support structure (1) according to one or more of the preceding claims, wherein the respective positioning elements (9, 10) are formed on the respective end faces (11) of adjacent glulam support elements (2) in order to prevent displacement of the glulam support elements (2) with at least one degree of freedom in a plane, wherein preferably the respective positioning elements (9, 10) on the respective end faces (11) of adjacent glulam support elements (2) are formed as a tongue and groove connection; or the respective positioning elements (9, 10) on the respective end faces (11) of adjacent glulam support elements (2) are formed as a cross tongue and groove connection.

6. Glulam support structure (1) according to one or more of the preceding claims, wherein at least one channel (4) is designed as an empty pipe through which a corresponding tension element (3) is passed, and / or wherein the tension element (3) is designed as a cable or rod, preferably a steel cable or steel rod.

7. Glued laminated timber support structure (1) according to one or more of the preceding claims, wherein the glued laminated timber support elements (2) are flat or curved.

8. Glulam support structure (1) according to one or more of the preceding claims, wherein at least two respective end faces (11) of adjacent gluelam support elements (2) are chamfered.

9. Glued laminated timber support structure (1) according to one or more of the preceding claims, wherein the tension elements (3) have a higher tensile strength than the tensile strength of the applicable cross-section of the glued laminated timber support elements (2).

10. Glulam support structure (1) according to one or more of the preceding claims, wherein at least one end (12) of the glued laminated timber support structure (1) has a plate-shaped end element (5).

11. Glulam support structure (1) according to one or more of the preceding claims, wherein the glued laminated timber support elements (2) are recyclable, wherein in particular the glued laminated timber support elements (2) are not contaminated, and / or the glued laminated timber support elements (1) are reusable.

12. Glued laminated timber support structure (1) according to one or more of the preceding claims, wherein the glued laminated timber support structure (1) has a length of at least 12 m, preferably of at least 40 m and more preferably of at least 100 m, over all glued laminated timber elements (2), and / or wherein the glued laminated timber support structure (1) has a minimum live load of 3,200 kg.

13. Glulam support structure (1) according to one or more of the preceding claims, wherein the glued laminated timber support structure (1) is designed as a parallel girder or as a gable roof girder with a straight / raised bottom chord or as an arch girder or as a bridge girder or as a roof girder, wherein preferably the bridge girder is designed as a horizontal girder for a bridge with running boards (14) and vertical posts (7) and railings (8) supported thereon.

14. Glulam beam element (2) for use in a glued laminated timber beam structure (1), preferably according to one or more of the preceding claims 1 to 13, wherein the glued laminated timber beam element (2) has two opposite end faces (11) and is preferably substantially prism-shaped or cylindrical, and more preferably substantially cuboid-shaped, wherein the glued laminated timber beam element (2) has at least one channel (4) running between the two opposite end faces (11) of the glued laminated timber beam element (2), wherein the glued laminated timber beam element (2) has respective positioning elements (9, 10) on its end faces (11) for exact positioning on adjacent glued laminated timber beam elements (2); and wherein the channel (4) is designed to pass a tension element (3) through which to brace the glued laminated timber beam structure (1) in an assembled state.

15. A method for producing the glulam support structure (1) according to one or more of the preceding claims 1 to 13, comprising: providing a plurality of glulam elements (2); precisely joining the glulam elements (2) at their end faces (11) by the positioning elements (9, 10) so that the respective channels (4) of the glulam elements (2) are aligned with one another; passing the respective tension elements (3) through the corresponding channel (4) over the entire length of the glulam support structure (1); attaching the fastening elements (6) to the respective ends of the tension elements (3) and in engagement with the respective ends (12) of the glulam support structure (1);and bracing the tension elements (3) with the respective fastening elements (6) at at least one respective end of the tension elements (3) against a corresponding end (12) of the glulam support structure (1) in order to press the glulam elements (2) together, wherein the bracing is preferably carried out hydraulically or manually with a tool;

Images