FI129236B - Laminated log structure, method and use - Google Patents

Abstract

The lamella log structure includes a plurality of horizontally superimposed lamella logs (100). The lamella logs (100) have one or more vertical lamellae (120a, 120b) for limiting the deflection of the lamella log structure (200) and at least one horizontal lamellae (110a, 110b) on either side of the one or more vertical lamellae (120a, 120b). The lamella logs (100) are fastened to each other by first screws (210) which, together with the vertical lamellae (120a, 120b) are adapted to support the lamella log structure (200). In addition to the lamella log structure (200), a method of forming the lamella log structure (200) and the use of screws to fasten the lamella logs (100) to each other in the lamella log structure (200) are also disclosed.

Description

LAMEL LOG STRUCTURE, METHOD AND USE

TECHNICAL FIELD The invention relates to a lamella log structure, such as a lamella log wall, and to a construction utilizing lamella logs.

BACKGROUND Lamellar log is a solid log made of several lamellas, which is widely used in log construction. Assembling the lamella logs into a lamella log structure, such as a lamella log wall, typically requires the use of one or more support structures to provide sufficient structural stability to support multiple overlapping lamella logs. Such support structures include various wooden pegs, metal pipes, and metal clamping bolts, all of which may be used to support a single lamella log structure. When the capacity of the pins alone is not sufficient, steel pipes must be used. Typically, one or more support structures, such as a metal pipe, must be transported vertically throughout the lamella log structure to provide sufficient strength to the lamella logs. The use of several support structures makes the lamellar log structure complex, which directly affects the materials used, the time required for installation and manufacture, and the probability of 3 errors occurring therein. D 30 Examples of the prior art are represented, inter alia, by FI 11556 Ul and WO 2006/048945, in which there is a vertical lamella between the two surface lamellae of the lamellar log. U.S. Pat. No. 5,163,259 A, for its part, discloses the fastening of building modules to each other using an adhesive and metal fasteners. FI 126679 B discloses a ‘non-depressed’ log structure and

KR 20090011628 U structure and method for a wooden wall.

OBJECT OF THE INVENTION The object of the invention is to eliminate or alleviate at least some of the above-mentioned drawbacks. In particular, it is an object to provide a lamellar log structure in which the pins, support pipes and clamping bolts can be omitted and still provide sufficient stability for the lamellar log structure.

SUMMARY The invention utilizes lamella logs having both vertical and horizontal lamellae. The lamella log can be angular or square lamella log. By horizontal lamella is meant here a lamella, i.e. a wood board, in which the causes of the wood are substantially horizontal when the lamella log is horizontal. In particular, the reasons may be in the longitudinal direction of the lamella log, which is at the same time in the longitudinal direction of the raw wood. Correspondingly, a vertical lamella means a lamella in which the causes of the wood are substantially vertical when the lamella log is horizontal. The vertical lamella can be obtained by fixing several vertical pieces of wood in parallel, for example by gluing them directly to each other. This allows the <vertical lamella to be of horizontal s length with the length of the raw wood being significantly greater than the width of the stitch. The structural components of logs, and in particular lamellar logs, are defined, inter alia, in the standard SFS 5973. This, in turn, reduces the deformation of the final structure due to moisture, i.e. changes in the width and height of the structure. Cracking and sagging of the structure can also be reduced. Through gluing, the structure can also be made substantially untwisted and untwisted.

The lamella log structure according to the invention can be, for example, a lamella log wall. The height of the lamellar log structure can be more than 1 meter, for example a room height, i.e. at least 2 meters, or more precisely at least 2.4 meters. The height of the lamellar log structure can also be at least a floor height, i.e. 3 meters or more. Thus, in addition to the wall height, its height may also comprise the height of the lower and / or upper floor structures. Lamellar logs can be pressed together, for example by hammering.

In the solution according to the invention, the lamella log structure is formed by stacking lamella logs comprising one or more vertical lamellae. When the vertical lamellae are superimposed in this way, they form a vertical bearing line, which may be substantially in the center line of the lamella logs. In addition, the structure is also substantially non-collapsible compared to, for example, a structure with only horizontal logs, since the shrinkage that occurs when the wood dries is significantly less in the vertical direction than in other directions. The lamella logs themselves are horizontal in structure, i.e. their longitudinal direction N is substantially horizontal. The lamella logs comprise N at least two horizontal lamellae, 3 of which one is arranged in the transverse direction of the lamella log © on one side of the vertical lamella and z the other on the other side. One or both of the horizontal lamellae may form the lateral outer surface of the lamella S, for example so that the core tree of the horizontal lamella opens outwards. S This can be used to improve the surface durability of the structure.

The lamella log is obtained by attaching two or more individual lamellae to each other.

One lamella log typically has at least two layers of lamellae in the horizontal direction, but there can also be more than one layer in the vertical direction.

The lamellae can be attached to each other by gluing, as a result of which the distortion and / or cracking of the logs can be reduced.

When the horizontal and vertical lamellae are glued together to the lamella log, a cross-glued lamella log is obtained.

The advantage of the structure is a slight depression or substantially non-depression, which facilitates obtaining the desired result.

As a natural material, wood also forms after installation, and a slight depression in the vertical direction essential to the structure affects in many ways not only the design of the lamella log structure and the special fasteners required during the installation, but also the resulting structure and its tightness.

The non-depressing nature of the lamella logs is important so that other materials can be attached directly to them without sliding fastenings.

However, the non-deflection of the lamella logs alone may not be enough, but it is also important to make the joint between the lamella logs uncompressed.

In the solution according to the invention, it has been found that a lamella log structure suitable for construction use, such as building construction, can be obtained by fastening overlapping cross-glued lamella logs to each other with first screws arranged to support the entire lamella log together with the vertical lamellae.

The first screws are thus load-bearing screws which are additionally z arranged to tie the overlapping lamella logs together.

The load-bearing screws and the vertical lamellae S can be adapted together to produce sufficient load-bearing forces o 35 in different directions of the lamella log structure when S there are several overlapping lamella logs.

In contrast to the lamellar log structures used in the industry for many years,

separate load-bearing support structures such as wooden pins, metal pipes or clamping bolts are not required. The lamellar log structure according to the invention can thus be said to enable screw tapping. The load-bearing screws 5 and the load-bearing line formed by the vertical lamellae can be adapted so that the load-bearing capacity of the lamella log structure exceeds a threshold value. The load-bearing screws fasten the lamella logs to each other in pairs, whereby the length of a single screw is less than the height of two overlapping lamella logs. The load-bearing screws can also receive the bending moment of the lamella log structure and / or the shear forces occurring in the longitudinal direction of the lamella log. The support screw on one side of the vertical lamella can receive compression and on the other, opposite side the tension.

The support screws are arranged to fasten each other said at least one horizontal lamellae of the overlapping lamella logs on both sides of one or more vertical lamellae. The lamella logs are thus fastened on top of each other so that said horizontal lamellae, which are aligned with the upper and lower lamella logs, are fastened to each other with load-bearing screws. The placement of the load-bearing screws in the horizontal lamellae forms a vertical load-bearing line on the lamella log structure on each side of the overlapping vertical lamellae. The transverse direction N of the log structure then has at least three vertical bearing lines: one line formed by vertical lamellae © and two lines formed by load-bearing screws. In particular, the buckling capacity of the lamella log structure can be improved. The load-bearing S lines can be adapted so that the buckling capacity of the lamellar log structure 35 exceeds a threshold value. S In one embodiment, the horizontal lamellae have one or more tongues and the support screws are arranged on or adjacent to the inner edge of the tongue.

The tongue can be a male tongue or a female tongue.

Placing the load-bearing screw next to the tongue makes it possible to hide the screw inside the structure as far as possible from the load-bearing line formed by the vertical lamellae, which can improve the buckling capacity.

Attaching the screw to the inner edge of the tongue can help facilitate fabrication and / or installation.

In one embodiment, the support screws are full thread screws.

This can improve the load-bearing capacity of the lamellar log structure, which in turn makes it possible to form log structures that reach room height, for example.

In one embodiment, the support screws on opposite sides of said one or more vertical lamellae are arranged in pairs on the same substantially transverse line of the lamella log.

This not only allows the load on the lamella log structure to be evenly distributed but also facilitates and speeds up the installation and can also reduce errors during installation.

The screws can also be pre-drilled recesses with a single drill unit comprising two or more blades according to the number of screws to be installed and wherein the drill unit is guided to the lamella log so that the blades drill into the lamella log simultaneously to form N said recesses at one time.

In the longitudinal direction of the lamellar log N, there may be more than 3 pairs described above and they may be, for example, substantially evenly spaced.

The pair of support screws z may be substantially equidistant from the vertical lamella and / or the center line of the lamella log.

S In one embodiment, said vertical lamellae of the overlapping lamella logs o 35 are tightened together with other screws arranged in said

line or whose distance from the nearest mentioned

not more than 50 cm in the longitudinal direction of the slatted log. The other screws are thus tightening screws. By placing the tightening screws in line with the load-bearing screws, the alignment of the overlapping lamella logs can be improved at the load-bearing screws and it is at these points that a tight lamella log structure can be obtained. On the other hand, this enhances and speeds up the formation of the lamellar log structure, since the same drilling unit and drilling can then be used to make recesses for all the screws in the line. Thus, one drilling unit may comprise three or more blades according to the number of screws to be installed and may be guided to the lamella log so that the blades drill into the lamella log simultaneously, forming said recesses at one time. In one embodiment, the load-bearing screws are arranged in the longitudinal direction of the lamella logs at 60-300 cm intervals. This has been found to bring good load-bearing capacity to the lamella log structure in many cases. The load-bearing capacity can be further improved by arranging the load-bearing screws at intervals of, for example, 60 to 90 cm. The support screws may also be substantially evenly spaced.

In one embodiment, the load-bearing screws are arranged in the longitudinal direction of the lamella logs in one or more groups of 2-6 screws. This can further significantly improve the cooling capacity of the lamellar log structure, and it has been found that already N groups of 2-3 screws can provide a significant benefit. The above-mentioned tightening screws 3 30 can be arranged inside the groups or, for example, at most 50 cm outside the groups = in the longitudinal direction of the lamella log. It has been found * that in many cases one piece of tightening screws per group is sufficient. In one group, the distance S of the successive support screws may preferably be at least 7 times the diameter of one support screw, which may be, for example, about 8 millimeters plus / minus 0-2 millimeters.

The distance between the successive screw groups can be, for example, 60-300 cm in the longitudinal direction of the lamella logs, measured from the center of the screw groups.

The groups may also be substantially evenly spaced.

The groups also make it possible to increase the buckling capacity of the lamella log structure locally.

The lamella log structure may, for example, comprise one or more groups of support screws locally positioned to improve the buckling capacity of the lamella log structure.

Thus, the lamella log structure may comprise in the longitudinal direction of the lamella log both individual support screws and groups of several support screws.

In one embodiment, said one or more vertical lamellae of the overlapping 1 lamella logs are tightened together by other screws.

The other screws are thus tightening screws, as also mentioned above.

This makes it possible to bring the overlapping vertical lamellae tightly together, whereby the deflection gap, such as installation clearances, in the vertical direction of the lamella log structure is substantially reduced or even substantially eliminated.

On the other hand, the tightening screws prevent the load-bearing screws from going out during installation to lift the upper lamella log off the lower one.

This can be especially important when the load-bearing screws are full-threaded screws that do not inherently tighten the joint.

The tightening screws N tighten the lamella logs in pairs, the length of the N individual screws being less than the height of the two overlapping lamella logs.

Tightening screws © may not be required as often as load-bearing z screws.

It has been found that in many cases it is sufficient to tighten the screw at a distance of at most 50-100 ° to 35 cm for each load-bearing screw or group of load-bearing screws.

In certain cases, the distance S can be up to 150 centimeters.

In particular, it should be noted that for a group of

this one tightening screw is at the above-mentioned distances even from one of the edges of the group.

The tightening screws can be adapted to remove the clearance, i.e. the empty space between the lamella logs.

Clearance can occur when installing lamella logs, for example if the lamella logs are not installed completely to the bottom.

Clearance can also occur if the lamella log is curved in its longitudinal direction.

In the solution according to the invention, the clearance can be removed or its removal can be ensured with tightening screws, in which case a separate tightening bolt is not required.

The tightening screws can be adapted to tie the overlapping lamella logs together, in which case no other structures are necessarily required.

The tightening screws alone can produce the required binding effect, so that even the load-bearing screws do not have to produce a binding effect.

In one embodiment, said second screws are partial thread screws.

This helps to achieve a tightening effect.

The partial thread screws can be fastened so that the threaded part of the screw sinks in its entirety below the overlapping lamella logs.

In one embodiment, the tightening screws are arranged in the longitudinal direction of the lamella logs at 60-300 cm intervals.

Since tightening screws are not necessarily needed as densely as load-bearing ones, the distance between them may be less, such as 150-200 centimeters or 150-300 centimeters.

The tightening screws N can be positioned relative to the support screws or groups of support screws, as mentioned above. © The tightening screws can also be substantially evenly spaced. * In a straight embodiment, the lamella logs are formed in the transverse direction by three or more lamellae 35, the outermost of which are the horizontal lamellae S and in the middle the lamellae vertical.

This allows for an inexpensive structure with durable,

the independent horizontal lamellae rest on the outer surfaces of the lamella log and the vertical lamella forms a bearing line in the middle.

Either or both of the horizontal lamellae on the outer surface of the lamella log may be arranged so that their heartwood opens outwards.

This can improve the durability of the outer surface.

In one embodiment, the lamella logs consist vertically of two or more lamellae.

This makes the lamella logs massive also in the height direction, even in the case typical of lamella logs, when the size of the raw material is limited, for example to a height of less than 20 cm.

In one embodiment, the lamella logs have pre-drilled recesses for screws.

This can not only speed up and increase the efficiency of the installation, but also ensure that the lamella log structure is assembled correctly and the screws come to suitable places to ensure sufficient load-bearing capacity and / or tightening effect.

The recesses can be adapted to support and / or tightening screws.

The recesses can be wider in diameter than the diameter of the screws, but also wider than the base of the screws.

In a lamella log with more than one layer vertically, the recesses can be limited to the uppermost layer, whereby the screw embedded in the recess also supports the gluing between the layers.

The recesses can be substantially the same size for both the load-bearing N and the tightening screws.

The solution according to the invention also relates to a method for forming a lamellar log structure.

In the method, horizontal lamella logs are superimposed on which one or more vertical lamellae are arranged to limit the depression of the lamella log structure, and at least one horizontal lamella 35 on either side of one or more vertical lamellae S.

The lamella logs are fastened to each other by first screws which, together with the vertical lamellae, are adapted to support the lamella log structure. The first screws are therefore load-bearing screws. The support screws are arranged to fasten each other said at least one horizontal lamellae of the overlapping lamella logs on both sides of one or more vertical lamellae. With load-bearing screws, the lamella logs can be fastened together in pairs, whereby the length of the load-bearing screw is less than the height of two overlapping lamella logs. Said one or more vertical lamellae of the overlapping lamella logs can also be tightened together with other screws, which are thus tightening screws.

The solution according to the invention also relates to the use of screws for fastening the lamella logs of a lamellar log structure to each other, wherein the lamella logs have one or more vertical lamellae to limit the log structure deflection and at least one horizontal lamella on both sides of the one or more vertical lamellae. with adapted to support a lamellar log structure. The screws are thus used not only to tie the logs of the lamella log structure together, but also to produce the load-bearing capacity of the log structure together with the vertical lamellae. Explicitly carrying screws, such as full thread screws, can be used for this purpose. The support screws are arranged to fasten each other said at least one horizontal lamellae 1 of the overlapping lamella logs N on both sides of one or more vertical lamellae ©. The screws can also be used Ek to tighten the logs of the lamella log structure together, in particular * when positioned at the vertical lamellae. Tightening screws, such as partial thread screws, can be used for this purpose. In general, the invention makes it possible to form a lamellar log structure more efficiently so that the load-bearing capacity and buckling capacity of the lamellar log structure are made sufficiently large, for example to exceed certain threshold values. It is also possible to form a lamellar log structure quickly and efficiently without having to make large drillings to erect the structure, such as drilling for pipes passing through the structure. Indeed, all bores made in the lamella log structure and / or in particular bores made in the vertical lamellae can be less than 30 millimeters in diameter, for example less than 20 millimeters in diameter. This applies specifically to the boreholes required for erecting a lamellar log structure, since, of course, various connecting bores can be drilled into the structure, such as boreholes in electrical cabling spaces, which can be relatively large. The bores required by the lamella log structure itself may be pre-drillings only to facilitate the installation of screws, which extend only to a part of the height of the lamella logs, for example less than 50% of the height. In practice, this can mean, for example, 11 plus / minus 0-5 cm drills. The absence of large boreholes can significantly improve the bending, cutting and / or even slight compression capacity of a lamellar log structure. Any missing drilling can also be done afterwards on site, which can reduce the need to return the lamella logs to the factory.

In general, the invention also facilitates the installation of a lamella log structure, as it is sufficient that only a limited number of different screw types D are installed as fastening elements. For example, up to two types of screws can be used: one type of support screws and / or one type of S tightening screws. This also reduces the possibility of errors during installation and can thus improve the uniformity of the final lamellar log structure.

The above embodiments can be applied in any combination with the lamellar log structure according to the invention. Multiple embodiments may be combined to form a new embodiment.

In particular, the lamellar log structure according to the invention, as such or in combination with any embodiment, can be applied in connection with the above method and / or use. Likewise, the steps related to the formation of the lamellar log structure according to the invention can also be carried out in connection with the above-mentioned method and / or use.

BRIEF DESCRIPTION OF THE DRAWINGS The invention will now be described in detail by means of application examples with reference to the accompanying drawing, in which Fig. 1 shows an embodiment of a lamella log according to the invention in a cross-sectional view in the longitudinal direction Fig. 3a shows examples of fastening screws in a cross-sectional view of a lamellar log structure seen from above, and Fig. 3b shows an embodiment of a lamellar log structure according to the invention in a cross-sectional view. A In the figures, the corresponding reference numerals 2 30 denote corresponding or at least functionally similar components. j

QR DETAILED DESCRIPTION 3 Figure 1 shows an example of a lamellar log 100 according to the invention. The lamella log 100 is formed of a plurality of lamellae 110a, 110b, 120a, 120b, which are fastened together, for example by gluing. The lamellae 110a, 110b, 120a, 120b may be substantially entirely of wood. They may be planed so that their side surfaces are substantially vertical. In particular, the lamella 110a located on the outer surface of the lamella log 100 may alternatively also have a curved side surface.

The lamella log 100 comprises lamellae 110a, 120a cross-fastened in its transverse direction, such as cross-glued. This means that some of the lamellae 110a, 110b are horizontal and some of the lamellae 120a, 120b are vertical. The horizontal lamellae 110a, 110b are arranged substantially in the longitudinal direction of the lamella log 100, wherein the causes of the trees of the horizontal lamellae 110a, 110b are substantially in the longitudinal direction of the lamella log 100. The horizontal lamella 110a, 110b may be formed from a single piece of wood. The vertical lamella 120a, 120b can again be formed of several pieces of wood, which are fastened in parallel, for example by gluing. Thus, the horizontal lamellae 110a, 110b and the vertical lamellae 120a, 120b may be substantially equal in length. They can also be substantially equally high, with their upper and lower surfaces being substantially level with each other. They can N continue to be substantially as wide as in the figure N, but especially in the transverse direction 3 of the lamella log 100 many other structures are also possible. The lamella log 100 may comprise several lamella layers in the vertical direction. Fig. 1a shows * an example in which the lamella log 100 comprises exactly two lamella layers S, but there can also be one layer 35 or even more than two. The layers may be S substantially equal in height. Structures to be formed on the bus and / or lower surfaces of the lamella log 100, such as tongues 140, 142, may be formed on the upper surface of the upper lamella 110a, 120a and / or the lower surface of the lower lamella 110b, 120b, respectively. The interface of the layers can be arranged substantially horizontally to facilitate the attachment of the layers to each other, for example by planing. The overlapping layers of one lamella log 100 can be attached to each other, for example by gluing.

The lamella log 100 comprises one or more vertical lamellae 120a, 120b in its transverse direction. Figure 1 shows an example in which there are exactly one vertical lamellae 120a, 120b in one layer, but there may also be two or more, in which case there may also be another structure, such as one or more horizontal lamellae. . The vertical lamellae 120a, 120b may be symmetrical with respect to the vertical line dividing from the center of the lamella log 100. In particular, one vertical lamella 120a, 120b may be on this center line of the lamella log 100. If the lamella log 100 has several lamella layers 100, the vertical lamellae 120a, 120b of the overlapping layers may align to form a vertical bearing line. If the lamella log 100 has only one layer, the one or more vertical lamellae 120a of this layer may as such be arranged to form one or more vertical bearing lines of the lamella log 100. The lamella log 100 comprises, in its transverse direction 3, two or more horizontal lamellae 110a, © 110b. Figure 1 shows an example in which there are> exactly two horizontal lamellae 110a, 110b in one layer, but there can also be three or more of them. In any case, there is at least one horizontal lamella on each side of the lamella log 100 in the transverse direction of the lamella logs 100a, 120b in the transverse direction of the lamella log 100.

120a, 120b. Either or both of these may be on the outer surface of the lamella log 100. In particular, the horizontal lamella 110a, 110b may be arranged on one or both of the outer surfaces of the lamella log 100 so that the heartwood of the horizontal lamella 110a, 110b opens substantially horizontally outward from the lamella log. This can be used to strengthen the wear resistance of the outer surface. Either or both of said horizontal lamellae 110a, 110b may be immediately attached to the vertical lamellae 120a, 120b, for example by gluing.

The lamella log 100 may have one or more tongues 140, 142 for aligning the overlapping lamella logs 100. The tongue 140, 142 may be arranged to substantially prevent the relative movement of the overlapping lamella logs 100 in the transverse direction of the lamella log 100. The tongue 140, 142 may extend substantially the entire length of the lamella log 100. The tongue 140, 142 may be a male tongue 140 or a female tongue 142. For example, the upper surface of the lamella log 100 may have one or more male tongues and the lower surface of the lamella log 100 may have one or more female tongues corresponding to the male tongue 140.

142. The tongue 140, 142 may be located, for example, in the horizontal lamella 110a, 110b. For example, the horizontal lamellae 110a, 110b on either side of the vertical lamellae 120, 120b may each have tongues 140, 142. These point N horizontal lamellae 110a, 110b may further be arranged on the outer surface of the lamella log 100, as shown in Figure 1. solution has been made. However, the tongues 140, © 142 may be in the transverse z direction of the lamella log 100 inside the outer surface so as to be arranged to remain hidden between the overlapping lamella logs S 100. The tongue 140, 142 may further have space for a seal, for example a groove arranged in the longitudinal direction of the lamella log. The seal space 150 may extend substantially the entire length of the lamella log 100.

The lamella log 100 may be formed of joined pieces of solid wood and may thus be substantially solid. However, the lamella log 100 may also have one or more recesses 130 for the screws. The recess 130 may be pre-drilled. The vertical lamella 120a may have its own recess 130 and / or the horizontal lamellae 110a may have their own. The recesses 130 may be substantially equal in width and / or height. However, in the vertical lamella 120a, the recess 130 may be higher than the recesses 130 in the horizontal lamellae 110a for a shorter screw. The recess 130 may be, for example, 14 millimeters in diameter plus / minus 0-6 millimeters. the recess 130 may be a borehole and thus relatively large, for example 30 millimeters plus / minus 0-10 millimeters in diameter. The size of the recess 130 may also be adapted to carry cables such as electric wires in the lamella log 100. The recess 130 may be less than 1003 in depth from the lamella height, even when the lamella log 100 consists of several lamella layers. For example, in a two-layer structure, the recess may be made in one or more upper layer lamellae 110a, 120a, wherein the recess 130 may be, for example, 80% plus / minus 0-10% of the height of the upper lamella N. N The lamella log 100 can be several 3 to 30 meters long. The width of the lamella log 100 may be less than half a meter, for example about 20 centimeters plus / minus Ek 0-10 centimeters. The total height of the individual lamella log 100 may be, for example, about 27 centimeters S plus / minus 0-10 centimeters, which may consist of, for example, two lamella layers. The overall height also takes into account the tongues 140, 142, which are arranged in the overlapping lamella logs 100.

nested.

The pitch of the lamella log 100 may be slightly less than the overall height, for example 26 centimeters plus / minus 0-10 centimeters.

Figure 2 shows an example of a lamellar log structure 200 according to the invention.

The lamella log structure 200 may be closed so that separate support structures extending through the lamella log structure 200 are not required.

In addition to the solid lamella logs 100, the substantially closed lamella log structure 200 may comprise only screws 210, 220 and any recesses 130 made therefor. .

However, the lamella log structure 200 may also have one or more horizontal solid wood surfaces extending the entire length and width of the lamella log structure 200.

The lamella log structure 200 may comprise a plurality of overlapping lamella logs 100, for example up to room height.

The pitch of a single lamella log 100 may be, for example, 20-30 centimeters, whereby there may be more than five or even more than ten overlapping lamella logs 100 in the lamella log structure 200.

The lamella logs of the lamellar log structure 200 may be N substantially similar.

For example, they can be N equal in height and / or equal in length.

The lamella logs 100 3 30 can also be of the same width, since the load-bearing capacity of the structure 200® is achieved on the one hand by the vertical lamellae 120a, a 120b of the overlapping lamella logs 100 and on the other hand by the support screws 210 used for fastening the lamella logs 100. o 35 In the lamella log structure 200, one or more vertical lamellae 120a, 120b of the overlapping S lamella logs 100 are aligned on each other so that

that they form one or more substantially vertical bearing lines.

The load-bearing line may extend substantially the entire height of the lamella log structure 200.

The lamella logs 100 are fastened to each other by support screws 210, which together with the support line are adapted to support the lamella log structure 200. The support screws 210 are arranged at the horizontal lamellae 110a, 110b.

They can further be arranged in the overlapping lamella logs 100 so as to form a substantially vertical bearing line.

The bearing line of the load-bearing screws 210 may extend substantially to the height of the entire lamella log structure 200.

Thus, the horizontal lamellae 110a, 110b can also be superimposed on substantially the entire height of the lamella log structure 200.

The bearing line of the load-bearing screws 210 may be formed on both sides of the load-bearing line of the vertical lamellae 120a, 120b, whereby the lamella log structure 200 may have three or more load-bearing lines.

In particular, this can improve the buckling capacity of the lamellar log structure 200.

thesis.

The support screws 210 may be wood screws.

In particular, they can be fully threaded screws.

In full thread screws, the thread extends substantially the entire length of the screw 210.

Essential to the load-bearing screws 210 is the load-bearing effect they cause on the lamella log structure 200. The load-bearing screws 210 may be conical, so that the base can be embedded in wood, in particular in the horizontal lamella 110a.

The length of the support screws 210 may substantially correspond to the height of the lamella Ek 100, for example it may be 50-150% * of the height of the lamella 100.

The length can be, for example, about 30 plus / minus 0-10 centimeters.

The absence of the pre-hole 35 can increase the required length of the screw 220, for example, so that the required length is about 150% plus / minus 0-25 of the height of the lamella log 100. In practice, this can be about 40 plus / minus 0-10 centimeters. In particular, when the lamella log 100 has two layers, the length of the support screws 210 may be slightly greater than the height of the lamella log 100 so that the screws extend when mounted on the lamella 120a of the upper lamella log 100 of the upper lamella log 100 of the upper lamella log 100. Thus, the screws 210 can also bind the lamellae 110a, 110b of the lamella log 100 to each other.

The transverse support screws 210 of the lamella log 100 may be located concealed within the lamella log structure 200. However, the support screws 210 may be arranged as wide as possible. If the lamella log 100 has a tongue 140, 142, the bearing screw 210 can be placed, for example, on or next to the inner edge of the tongue 140, 142, for example immediately or at a maximum distance of 1-2 centimeters.

The lamella logs 100 can be tightened together with clamping screws 220 arranged at one or more vertical lamellae 120a, 120b. The tightening screws 220 may be arranged in the overlapping lamella logs 100 so as to form a substantially vertical line which may extend substantially the entire height of the lamella log structure 200.

The tightening screws 220 may be wood screws.

Fritically, they may be partial thread screws. In partial-screw screws, the thread extends over only a portion of the length of the screw 220, for example, for a distance of about 50% plus / minus 0-25 percent. Essential to the tightening screws 220® is their tightening effect, which removes play from the bearing line of the vertical lamellae 120a, 120b. The pitch S of the tightening screw 220 may be greater than the pitch of the support screw 210 ° 35, for example 200% plus / minus 0-50% of the pitch of the bearing S screw 210. The tightening screws 220 may be flat-headed, in particular under the base

the surface may be flat to immerse the tightening screw 220 in the surface of the vertical lamella 120a. The tightening screws 220 may also be wide-headed, in particular their base may be larger in diameter than the support screws 210. The base of the tightening screw 220 may be, for example, 18 plus / minus 0-3 millimeters. The clamping screws 220 may be shorter than the load-bearing screws 220, especially when the lamella log 100 has recesses 130 for the clamping screws 220 and optionally also for the support screws 210. For example, the length of the clamping screw 220 may be less than the height of the lamella log 100, e.g. be 40-90% of the height of the lamella log 100. The length can be, for example, 18 plus / minus 0-10 centimeters. The absence of recesses 130 increases the required length of the screw 220, and the tightening screws 220 can then be substantially the length of the load-bearing screws 210. Figure 3a shows several examples of the location of the screws 210, 220 in the lamella log structure 200. The figure is a cross-sectional view of the lamella log structure 200 seen from above. The figure shows separate positions of the screws 210, 220 which can be used in the same or separate embodiments of the invention. The load-bearing screws 210 are indicated in the figure by circles (o) and the tightening screws 220 by the screws (x).

All the bearing screws 210 required to support the lamella log structure 200 may be located in the horizontal lamellae 110a, 110b. All the tightening screws © 220 required to tighten the vertical lamellae 3 30 120a, 120b of the lamella log structure 200 can in turn be located in the vertical lamellae 120a, 120b. The support screws 210 may be arranged in pairs in the transverse direction of the lamella log 100 so that the two support screws 210 are in a pair o 35 on the same transverse line 310 but on different sides of the vertical lamella 120a, 120b. Such pairs may be in the longitudinal direction of the lamella log 100.

in the direction of several and may in particular be adapted to improve the buckling capacity of the lamellar log structure 200, for example so that the buckling capacity exceeds a threshold value.

The longitudinal support screws 210 may be in the configuration either individually or arranged in a group 320 of a plurality of support screws. This can substantially improve the buckling capacity of the lamellar log structure 200. For example, the assembly may have 1-5 support screws 210 in the longitudinal direction of the lamella log 100, wherein the multi-screw group 320 may have, for example, 2-3 or 2-5 screws 210. The support screws 210 belonging to the same group 320 may be substantially evenly spaced. The distance between the support screws 210 within the group 320 is smaller than between the groups arranged in the longitudinal direction of the lamella log 100. For example, the distance between them may be 5 to 10 centimeters, so that the length of the entire array 320 may be, for example, 5 to 40 centimeters when there are more screws 210 in the array 320.

The distance 330 of successive formations in the longitudinal direction of the lamella log 100 may be, for example, N 60-300 centimeters or 60-90 centimeters, where in the case of the group N 320 the position is determined on the basis of its center. The distance 340 of the successive tightening screws 220 © may be longer than the distance Ek of the formations 340, since for the tightening screws 210 it is sufficient that at least one tightening screw 210 is at most a threshold distance from each formation of the supporting screws 210 in order to the tightening screw 220 also makes the overlapping lamella logs 100 together at the bearing screws 210. This threshold distance can be, for example, 50-100 centimeters, but in some cases up to 150 centimeters. The threshold distance is measured in the longitudinal direction of the lamella log 100 and for the groups 320 it is measured in relation to the outermost, i.e. the tightening screw 220 closest to the support screw

210. If the lamella log structure 200 comprises one or more groups 320, a tightening screw 220 may also be placed inside each group, i.e. longitudinally of the lamella log 100, at the first or last support screw 210 of the group 320 or between the first and last support screws 210 . The tightening screw 220 can also be arranged on the transverse line 310 of the support screws 210 or at the above-mentioned threshold distance from this line 310. This ensures that the overlapping lamella logs 100 are also opposed at the support screws 210, but in particular that both the tightening screw 220 and the support screws 210 can be recessed in a single bore using a single multi-blade drill unit. However, the tightening screws 220 may also be separate from line 310. Figure 3b shows an example of a lamella log structure 200 in a cross-sectional view in the longitudinal and vertical planes of the lamella logs 100. The support screws 210 and / or the tightening screws N 220 can be positioned vertically in the lamella log structure 200 N in a line 350a, 350b, 360a, 360b or lines. Particularly in the case of the bearing screws 210, this © makes it possible to form one or more bearing lines 350Db, z 360b. The vertical lines 350a, * 350b, 360a, 360b are indicated in the figure by dashed lines, the line of which has not been drawn o 35 at screws 210, 220 for the sake of clarity. S As shown, the vertical line, here the first vertical line 350a, 350b, can be formed so that each lamella log 100 has only one screw 210, 220 at the first vertical line 350a, 350b. , 220 so that each lamella log 100b, 100c is connected on the first vertical line 350a, 350b by a screw 210, 220 in only one direction, i.e. either downwards or upwards.

The pair may be arranged on one or more pairs of lamellar logs 100d, 100e, which are also connected in pairs on the first vertical line 350a, 350b by a screw 210, 220. However, the upper pair 100b, 100c is not connected on the first vertical line 350a, 350b in the lower pair 100d, 100e , but the overlapping pairs are connected to each other by screws 210, 220 disposed from the first vertical line 350a, 350b to the lateral second vertical line 360a, 360b.

The second vertical line 360a, 360 may be lateral to the first vertical line 2350a, 350b at least in the longitudinal direction of the lamella log 100, which may also improve the buckling capacity of the lamella log structure 200.

Also, the lamella logs 100 on the second vertical line 360a, 360b may be connected in pairs so that each lamella log 100 has only one screw 210, 220 at the second vertical line 360a, 360b. 200 are connected in pairs in two separate N vertical lines, i.e. in the first vertical line 2350a, 3 35050b and in the second vertical line 360a, 360b, so that the screws 210, 220 are located in these vertical lines alternately in the vertical direction of the lamellar log structure 200.

In principle, it is also possible to place the screws 210, 220 S in more than two vertical lines alternately. o 35 In one vertical line, the screws 210, 220 are always of the same S type, ie load-bearing screws 210 or tightening screws.

and 220.

The distance between the first vertical line 350a, 350b and the second vertical line 360a, 360b may be, for example, less than 60 to 150 centimeters. It may be at least 7 times the diameter of one support screw 210, which may be, for example, about 8 millimeters plus / minus 0-2 millimeters. The first vertical line 350a, 350b and / or the second vertical line 360a, 360b may extend substantially the entire height of the lamellar log structure 200. The second vertical line 360a, 360b may be substantially in the longitudinal line of the lamella log 100 with the first vertical line 350a, 350b. It can also be seen from Figure 3b that if recesses 130, such as pre-drillings, are provided in the lamella logs 100, the recesses 130 may be located at different points in the overlapping lamella logs 100, e.g. at. In general, the tightening screws 220 can be mounted on a single lamella log 100 before the load-bearing screws 210, which also ensures that there is no play at the load-bearing screws 210. This can be done, for example, by installing all the tightening screws 220 of one lamella log 100 before any bearing screw 210, or at least so that each future formation of the bearing screws 210 of the lamella log 100 is installed only after the N lamella logs 100 are at a maximum distance The invention is not limited to the application examples presented above, but many modifications are possible while remaining within the scope of the inventive idea defined by the claims.

OF

Claims (15)

PATENT CLAIMS A lamella log structure (200) comprising a plurality of horizontally superimposed lamella logs (100) having one or more vertical lamellae (120a, 120b) for limiting the deflection of the lamella log structure (200) and at least one horizontal lamella (110a, 110b) on both sides of one or more vertical lamellae (120a, 120b), characterized in that the lamella logs (100) are fastened to each other by first screws (210) which are support screws which, together with the vertical lamellae (120a, 120b) are adapted to support a lamella log structure (200) and arranged to fasten said at least one horizontal lamellae (110a, 110b) of overlapping lamella logs (100) to each other on either side of one or more vertical lamellae (120a, 120b). A lamella log structure according to claim 1, wherein said horizontal - lamellae (110a, 110b) have one or more N tongues (140, 142) and said first screws A (210) are arranged on the inner edge of the tongue (140, 142). 30 teddy bears or next to the inner edge. 2 A lamellar log structure (200) according to claim 1 or 2, wherein said first screws (210) are full thread screws. & A log structure (200) according to any one of claims 1 to 3, wherein said first N screws (210) are opposed to said one or more vertical lamellae (120a, 120b). on each side are arranged in pairs on the same substantially transverse line (310) of the lamella log (100). A lamella log structure (200) according to any one of claims 4, wherein said vertical lamellae (120a, 120b) of the overlapping lamella logs (100) are clamped together by second screws (220) arranged on said line (310). or having a distance of not more than 50 centimeters from the nearest said line (310) in the longitudinal direction of the lamella log (100). A lamella log structure (200) according to any one of claims 1 to 5, wherein said first screws (210) are arranged in the longitudinal direction of the lamella logs (100) at intervals of 60 to 300 centimeters. A lamella log structure (200) according to any one of claims 1 to 6, wherein said first screws (210) are arranged in one or more groups (320) of 2 to 6 screws in the longitudinal direction of the lamella logs (100). A lamella log structure (200) according to any one of claims 1 to 4, wherein said one or more vertical lamellae (120a, 120b) of the overlapping lamella logs (100) are tightened together by second screws (220). OF A lamellar N log structure (200) according to claim 5 or 8, wherein said second screws 3 are partial thread screws (220). 00 A lamella log structure (200) according to any one of claims 5, 8 or 9, wherein said + second screws (220) are arranged in the longitudinal direction of the lamella logs (100) at intervals of 60 to 300 centimeters. S A lamella log structure (200) according to any one of claims 1 to 10, wherein the lamella logs (100) consist of three or more lamellae in the transverse direction, with the horizontal lamellae (110a, 110b) at the outermost edge and the vertical lamellae (120a, 120b) in the middle. A lamella log structure (200) according to any one of claims 1 to 11, wherein the lamella logs consist vertically of two or more lamellae (110a, 110b, 120a, 120Db). A lamella log structure (200) according to any one of claims 1 to 12, wherein the lamella logs (100) have pre-drilled recesses (130) for screws (210, 220). A method of forming a lamellar log structure (200), the method comprising superimposing horizontal lamella logs (100) provided with one or more vertical lamellae (120a, 120b) for limiting the deflection of the lamella log structure (200) and at least one horizontal lamella ( 110a, 110b) on both sides of one or more vertical lamellae (120a, 120b), characterized in that the lamella logs (100) are fastened to each other by first screws (210) which are load-bearing screws N which together with the vertical lamellae N (120a, 120b) are adapted to support a lamella log structure (200) and are arranged to fasten to each other Ek at least one horizontal lamellae (110a, S 110b) of one or more vertical lamellas (100a) of overlapping lamella logs (100). o 35 On both sides of the breast (120a, 120b). o OF Use of screws (210) for fastening the lamella logs (100) to a lamella log structure (200), the lamella logs (100) having one or more vertical lamellae (120a, 120b) for limiting the deflection of the log structure (200) and at least one horizontal lamella (110a). 110b) on both sides of one or more vertical lamellae (120a, 120b), characterized in that the screws (210), which are load-bearing screws, are arranged to fasten to each other said at least one horizontal lamellae of the overlapping lamella logs (100). lamellae (110a, 110b) on both sides of one or more vertical lamellae (120a, 120b) and together with the vertical lamellae (120a, 120b) adapted to support the lamella log structure (200). OF O N ©? 00 I Jami a O N 0) LO 00 o OF