EP2954124B1 - Wooden strut construction comprising a first strut support member and at least one second strut support member, said members being force-locked together at a node point - Google Patents

Description

Technical area:

The invention relates to a wooden bar construction with a first bar support member and at least one second bar support member which are non-positively connected to each other in a node, according to the preamble of patent claim 1.

State of the art:

Wooden bar structures composed of individual bar supports are known above all as static load-bearing structures for buildings, halls, roofs and the like, but also as load-bearing structural elements such as truss girders, masts etc. They are used both for producing flat and three-dimensional structures.

Characteristic of such bar constructions is that the individual bar support members, such as round or square timbers, converge like a truss in nodes. Since the power flow follows the longitudinal axes of the bar support members, this results in a load concentration and load deflection in the nodal area. The highly loaded nodes in this way is thus of central importance within the entire rod construction.

For connecting two or more bar support members, it is known to provide a node plate in the node, which has connection surfaces for the individual bar support members. The node may be formed so that the connection surfaces are within the wood cross section, to which the bar support member is slotted normally, or outside of the wood cross section, for example, in gusset plates with shoe-shaped receptacles, in which the ends of the bar support members are inserted. The frictional connection between gusset plate and bar support member is usually carried out across transversely to the rod support member longitudinal axis in the bar support member introduced dowels or nailing.

In this type of connection, it initially proves to be disadvantageous that the wood cross-sectional area available for load transfer is reduced by slitting the wood cross-section and / or arranging transverse dowels, with the consequence of reduced load bearing capacity of the bar construction.

Typical of such rod designs is also that their full carrying capacity is achieved only by activating the Lochleibungsflächen. The necessary minimum displacement paths add up to a relatively large slip and thus undesirably large deformations of the overall construction. Overall, it was found in such bar structures that only 60% to 70% of the forces coming from the bar support members are transmitted in the junctions.

In addition, it is also known to connect wooden support members by Zimmermannsart by means of pins, catches and the like. The underlying principle of this type of connection is based on the transfer of force by producing a positive connection to accomplish. The disadvantage, however, is the very time-consuming production of the positive locking means due to their given geometry and the limited applicability of this type of connection due to the decreasing power transmission at increasing force-fiber angles.

document EP 0 044 057 A1 discloses a wooden bar construction according to the preamble of Anspurchs first

Presentation of the invention:

Against this background, the invention has the object to improve the load transfer behavior of rod structures in their nodes and to minimize load-induced deformations.

This object is achieved by a rod construction with the features of patent claim 1.

Advantageous embodiments will be apparent from the dependent claims.

The basic idea of the invention is to provide a molded body in the junction of a wooden bar construction which has defined force introduction surfaces for connecting a plurality of bar support members. The inventive design of the connection between the molded body and the rod support members any slip is eliminated from the rod construction in the connection area, with the advantage that deformations occur within the rod construction in only a small extent.

A further advantage of the invention results from the load transfer behavior typical of bar structures, in which essentially only tensile and compressive forces occur in the individual bar support members, which are deflected at the junctions. In known rod constructions, this leads to an unfavorable stress of the rod support members in the node, since the introduction of force is directed obliquely to the fiber.

According to the invention, the moldings replace the bar support members in the nodes, so that the bar support members are claimed only fiber parallel. This has the advantage that the inhomogeneous and anisotropic material properties of the material wood in the heavily loaded node at force application obliquely to the fiber are no longer relevant for the dimensioning of the rod support members. Instead, by providing a shaped body of a homogeneous material with defined material properties, it is possible to focus specifically on the load prevailing in the nodal point. The bar construction can therefore be designed not only more efficient and economical, but also slimmer and therefore more aesthetic.

The shaped body is preferably produced by the casting method, 3D printing process or by milling from a solid material and consists of mineral casting, preferably of a polymer-bound concrete. This has the advantage that even spatially complex shapes can be realized in a simple manner. Thus, it is possible to adapt the shape of the molded body to the force curve in order to avoid peak stresses within the cross section. With a suitable choice of material, the strengths of the molded body are far above those of the bar support member to be connected, with the advantage that high-strength moldings are available for load transfer within the bar construction in areas with high load concentration, while in less stressed areas, the comparatively lower strength of the wooden bar support members sufficient for the load transfer. The specific load-bearing behavior of the bar construction follows in this way the intensity of the loads, whereby uneconomical oversizing be avoided. Since the shaped body has a homogeneous structure, its mechanical properties are constant over the entire volume. Therefore, safety factors to take into account the grain shape as well as the anisotropy and inhomogeneity of the material wood can be set lower, which also leads to a slimmer and more economical construction.

Since in a bar construction according to the invention any slip is eliminated from the static system, a nodal point according to the invention does not structurally impart a joint, but is able to absorb and transmit bending moments to a certain extent. This property can be improved if the connection of a bar support member to a shaped body has two or more rod-shaped, laterally spaced connecting elements, one of which acts under load as a push rod and another as a pull rod.

Another advantage of the invention will become apparent when setting a rod construction. By arranging molded bodies according to the invention in the nodal points, it is sufficient to cut the individual bar support members perpendicular to their longitudinal axis by means of a simple cut-off cut. Time-consuming and labor-intensive tearing of angles, miter cuts and the like is eliminated, which significantly reduces the effort involved in joinery.

According to an advantageous embodiment of the invention, a force-transmitting pressure element is arranged between the first force introduction surface of the shaped body and the end of the first rod support member. Due to its homogeneous material properties, the pressure element ensures a defined force transmission from the rod support member to the molded body, independent of the imperfections of the material wood.

In a further development of this embodiment, the pressure element is positively embedded in a recess at the end of the rod support member and / or in the force introduction surface of the shaped body, whereby a positional fixation of the pressure element is first achieved. By full-surface gluing of the pressure element in one or optionally both recess pressure forces between the rod support member and molded body are not only transmitted in the abutment surface, but also on the peripheral surface of the pressure element. With regard to a visually appealing appearance, the pressure element is almost completely absorbed by the recess and is therefore virtually invisible.

The pressure element can be made of a material with ductile properties, which allows the reduction of stress peaks by deformation-induced load transfer. According to the invention, plastics with elasto-plastic behavior or suitable elastomers are preferred for this purpose.

When using a pressure element with elastic properties small torsions around the centric axis of the steel rod can be allowed, so that in interaction creates a zug-, pressure and bending resistant connection to the node with an adjustable spring stiffness. In this case, the spring stiffness on the diameter, the thickness and the material stiffness of the pressure element can be adjusted. Imperfections, for example, inclinations of asymmetric loads can thus be transmitted elegantly and with little constraint in the junction. Suitable pressure elements consist for example of elastomers, preferably of Cloroprene rubber or natural rubber, in which optionally reinforcement inserts can be integrated.

On its front side facing the shaped body, the pressure element can be provided with a profiling, so that transverse forces are not removed by the rod-shaped connecting element only in the transverse force load in the connection area, but also on the pressure element.

Also preferred is a pressure element with a cylindrical or disc-shaped shape, which sits coaxially on the rod-shaped connecting element. In this way, an extremely compact node structure is realized, which allows to lead several rod support members in the node together, without these interfere with each other.

Another embodiment provides, instead of the pressure ring to introduce a hardenable potting compound in a corresponding cavity, the potting compound thus forms the pressure element after setting. This has the advantage that the potting compound adapts to the local geometric conditions at the junction and is therefore able to compensate for production or assembly-related tolerances. The potting compound can have the same material properties in the set condition as the pressure element.

Another embodiment of the invention combines the two above-described solutions and their advantages by a pressure ring between the rod support member and molded body is arranged, which also forms the cavity for the potting compound at the same time.

To produce a rigid, completely slip-free connection between the first rod support member and the molded body, the connecting elements are preferably glued or screwed into the bores.

Brief description of the drawings:

The invention is explained in more detail below with reference to embodiments illustrated in the drawings, wherein further features and advantages of the invention will become apparent. For the same or functionally identical features the same reference numerals are used, as far as this seems advantageous.

Fig. 1

einen Vertikalschnitt durch eine erste Ausführungsform der Erfindung,

Fig. 2

eine Schrägansicht auf die in Fig. 1 dargestellte Ausführungsform der Erfindung,

Fig. 3

einen Teillängsschnitt durch eine zweite Ausführungsform der Erfindung,

Fig. 4

eine Schrägansicht auf eine dritte Ausführungsform der Erfindung,

Fig. 5

eine Schrägansicht auf den in Fig. 4 dargestellten Formkörper,

Fig. 6

eine Schrägansicht auf eine vierte Ausführungsform der Erfindung,

Fig. 7

eine Schrägansicht des in Fig. 6 dargestellten Formkörpers einschließlich stabförmiger Verbindungselemente,

Fig. 8

einen Schnitt durch die in Fig. 6 dargestellte Ausführungsform, und die

Fig. 9

und 10 jeweils einen Schnitt durch weitere Ausführungsformen der Erfindung mit einer innenliegenden Vergussmasse im Anschlussbereich.

It shows

Fig. 1

a vertical section through a first embodiment of the invention,

Fig. 2

an oblique view of the in Fig. 1 illustrated embodiment of the invention,

Fig. 3

a partial longitudinal section through a second embodiment of the invention,

Fig. 4

an oblique view of a third embodiment of the invention,

Fig. 5

an oblique view of the in Fig. 4 illustrated moldings,

Fig. 6

an oblique view of a fourth embodiment of the invention,

Fig. 7

an oblique view of in Fig. 6 Shaped body shown including rod-shaped connecting elements,

Fig. 8

a section through the in Fig. 6 illustrated embodiment, and the

Fig. 9

and FIG. 10 each show a section through further embodiments of the invention with an inner potting compound in the connection area.

Ways to carry out the invention and commercial usability:

The Fig. 1 and 2 1 shows a diagonal strut whose longitudinal axis 3 extends at an angle α to the longitudinal axis 4 of the second bar support member 2, for example a support. At the intersection of the longitudinal axis 3 of the first bar support member 1 with the peripheral surface 5 of the second bar support member 2 is a Shaped body 6 arranged in Fig. 2 is shown on a larger scale in an oblique view.

The molded body 6 is formed as a monolithic cast body 2 and has approximately wedge shape. In the present exemplary embodiment, the molded body 6 consists of polymer concrete, ie it is composed of a mineral aggregate and a polymer matrix as binder, this mixture optionally also being able to contain fibers for reinforcing and increasing the strength.

The molded body 6 has a first force introduction surface 7, which runs perpendicular to the longitudinal axis 3 of the first rod support member 1. In the present embodiment, the first force introduction surface 7 has a circular shape, but it can also take any other arbitrary shape, for example, be square or rectangular. At the intersection of the longitudinal axis 3 with the first force introduction surface 7, a cylindrical cavity 8 is provided, which runs parallel to the longitudinal axis 3 and ends blindly in the molded body 6. The first force introduction surface 7 serves as a support for the first bar support member 1.

On its side which is assigned to the second bar support member 2, the shaped body 6 has a second force introduction surface 9, which rests completely on the circumference 5 of the second bar support member 2. In the present exemplary embodiment, the second force introduction surface 9 has a rectangular ground plan and, in the case of a round timber, runs curved as a second bar support member 2 and, in the case of a square timber, as a second bar support member 2. The force introduction surface 9 may be provided with a profiling in order to bring about a toothing with the circumference 5 of the second rod support member 2 in order to increase the transferable force. At the intersection of the longitudinal axis 3 with the second force introduction surface 9 can be seen a recess 10 having a preferably cylindrical shape.

The lateral surface of the molded body 6 results essentially from the entirety of all the generatrices of the first force introduction surface 7 and second force introduction surface 9. This results in a spatially convex shape of the shaped body 6.

In addition, a shaped body 6 according to the invention is penetrated by two approximately parallel channels 11, which extend from the peripheral surface 12 lying between the first force introduction surface 7 and the second force introduction surface 9 to the second force introduction surface 9 and thereby directed perpendicular to the longitudinal axis 3 Course ends at the height of the recess 10 or higher. The channels 11 serve to receive and guide fasteners, not shown.

How out Fig. 1 it can be seen, the molded body 6 lies in its intended use with the second force introduction surface 9 over the entire surface on the circumference 5 of the second rod support member 2. In this case, a nail-like driven into the second bar support member 2, with its head positively engaging in the recess 10 centering mandrel 15 ensures the intended relative position of the shaped body 6 relative to the second bar support member 2. The load-bearing fastening means are in the Fig. 1 and 2 not shown, however, consist of high-strength bolts that extend through the channels 11 and extend with their threaded portion each in the solid wood of the second bar support member 2. In order to reduce the explosive effect emanating from the fastening means, the channels 11 may be formed by sleeves embedded in the shaped body 6. In addition, the second bar support member 2 may have at its periphery an axially acting abutment surface which receives the parallel to the longitudinal axis 4 force component from the shaped body 6.

For the connection of the first bar support member 1, the force introduction surface 7 associated with the end of a starting from the end face 16 coaxially to the longitudinal axis 3 extending blind hole 17, which may extend for example 15 cm in the first bar support member 1 into it. The diameter of the blind hole 17 preferably corresponds to that of the cylindrical cavity 8 in the molded body 6.

The blind hole 17 intersects with a likewise extending from the end face 16 and extending coaxially to the longitudinal axis 3 circular cylindrical recess 18 with a larger diameter compared to the bore 17 and lower axial depth. Together, the blind hole 17 and the circular cylindrical recess 18 a kind of stepped bore at the end of the first rod support member 1. For the inventive design of the node, the provision of the recess 18 is indeed advantageous, but not essential. Likewise, only the blind hole 17 could be arranged in the force introduction surface 7.

The frictional connection between the first rod support member 1 and molded body 6 via a rod-shaped connecting element 19, one end of which is non-positively anchored in the bore 17 of the first rod support member 1 and the other end non-positively in the cylindrical cavity 8 in the molding 6, for example by gluing, screws or in concrete. The connecting element 19 consists in the present example of a Steel bar with profiled peripheral surface, preferably with a circumferential external thread to improve the power transmission between the connecting element 19 and the first bar support member 1. This does not exclude that the connecting element 19 may also have a smooth surface in a simple embodiment. In addition to steel as a material for the connecting element 19, composite materials such as glass fiber or carbon fiber reinforced plastics, which prove to be light and corrosion resistant.

Furthermore, goes from the Figures 1 and 2 shows that a disk-shaped pressure element 20 is inserted coaxially to the axis 3 in the recess 18 of the first rod support member 1 and thereby axially penetrated by the connecting element 19. The molded body 6 facing end face 21 of the pressure element 20 forms a projection on the end face 16 of the first rod support member 1, with the aim to initiate compressive forces on this end face 21 in the molding 6. The pressure element 20 consists of a material with ductile properties, for example of a suitable elastomer or of a plastic with elastic and / or plastic behavior.

For load transfer, the rod-shaped connecting element 19 and the pressure element 20 cooperate with tensile forces from the connecting element 19, compressive forces together by the connecting element 19 and pressure element 20, transverse forces from the connecting element 19 and bending moments are taken together by the connecting element 19 and pressure element 20. If the pressure element 20 has elastic properties, small twists about the longitudinal axis of the connecting element 19 are permitted. The interaction of connecting element 19 and elastic pressure element 20 results in a spring system whose spring stiffness over the diameter, the thickness and the material stiffness of the pressure element 20 can be adjusted.

Fig. 3 shows the implementation of the invention on a truss girder, of which only a longitudinal section is shown. Both top flange and bottom flange of the truss carrier are each formed by a second bar support member 2, which are connected by means acting as diagonal struts bar support members 1 and 1 '.

For connecting the diagonally extending bar support members 1 it is - although not shown in the drawing - within the scope of the invention, the ends of each by means of a shaped body 6 according to the Figures 1 and 2 to connect to the second bar support members 2. In this case, two moldings 6 would in each case with a node reverse orientation with respect to the longitudinal axis 4 of the second bar support members 2 may be arranged immediately adjacent to each other.

To make the connection area more compact, the in Fig. 3 illustrated embodiment of the invention, a molded body 6 'before, resulting from a geometric fusion of two moldings 6 according to the Figures 1 and 2 results, the first force introduction surfaces 7 are aligned opposite. In this way, a mirror image of the shaped body 6 with respect to the plane perpendicular to the longitudinal axis 4 symmetry plane 22 results.

The resulting in this way shaped body 6 'has a compared to the embodiment according to the Figures 1 and 2 enlarged second force introduction surface 9, which serves for conditioning and force transfer into the second rod support member 2, a first force introduction surface 7 for connecting the first rod support member 1 and a further force introduction surface 7 ', which is arranged with respect to the plane of symmetry 22 mirror image of the first force introduction surface 7.

With regard to the connection of the rod support members 1 to the first force introduction surface 7 or further force introduction surface 7 'and the rod support member 2 to the second force introduction surface 9 apply in the Figures 1 and 2 made statements analogously, so that in order to avoid repetition, reference is made to the statements there.

The embodiments according to the FIGS. 1 to 3 reveal shaped bodies 6, 6 'in which the first force introduction surface 7 or 7' and the second force introduction surface 9 are of different types, since the force introduction surfaces 7, 7 'are perpendicular to the rod support member 1 to be connected and the force introduction surface 9 is parallel to the rod support member 2.

Of these, the embodiments differ according to the FIGS. 4 to 7 in that the force introduction surfaces 7, 7 ', 7 ", 7"' of the moldings 6 ", 6"'are all of the same type, in which the force introduction surface 7, 7', 7 ", 7"'is perpendicular to the fiber of the bar support member to be connected are aligned.

The in the FIGS. 4 and 5 disclosed embodiment of the invention shows a molded body 6 ", which serves at the upper end of serving as a support first bar support member 1. To the shaped body 6" four further bar support members 1 ', 1 ", 1"', 1 "" are connected, for example, the struts of a roof or ceiling construction form. The connection of the bar support members 1, 1 ', 1 ", 1"', 1 "" takes place via the force introduction surfaces 7, 7 ', 7 ", 7"' formed by the shaped body 6 "which are perpendicular to the longitudinal axis 3 of the bar support members 1 assigned to them , 1 ', 1 ", 1"', 1 "". The tension-pressure-resistant and connection of the individual bar support members 1, 1 ', 1 ", 1"', 1 "" to the shaped body 6 "takes place by means of a rod-shaped connecting elements 9 and a pressure element 20 and thus corresponds mutatis mutandis to the under FIGS. 1, 2 and 3 described connection of the first bar support member 1 to the shaped body 6. In order to avoid repetition, reference is made to the statements there.

Subject of the FIGS. 6 and 7 is a fourth embodiment of a knot formation according to the invention, which shows that spatially complex rod constructions can be realized with the invention. The peculiarity of this embodiment is that in the connection region of the bar support members 1, 1 ', 1 ", 1"' to the shaped body 6 "'particularly good bending moments can be transmitted.

The shaped body 6 "'consists of a disk-like, multiply curved body, to which the bar support members 1, 1', 1", 1 "'arriving from different spatial directions 23, 23', 23", 23 "', 23" "are connected For this purpose, the molded body 6 "'has force introduction surfaces 7, 7', 7", 7 "'with a rectangular plan, each force introduction surface 7, 7', 7", 7 "'laterally spaced axially parallel cylindrical cavities 8, each for receiving rod-shaped connecting elements 19, 19 'serve.

The bar support members 1, 1 ', 1 ", 1"' also have a rectangular cross-section which corresponds to the outline of the force introduction surfaces 7, 7 ', 7 ", 7"'. In the end faces 16, 16 ', 16 "16"', 16 "" of the bar support members 1, 1 ', 1 ", 1"' are each introduced two blind holes, whose arrangement corresponds to the rod-shaped connecting elements 19, 19 'and the To serve the same. The production of in FIG. 6 shown finished knot happens by joining the bar support members 1, 1 ', 1 ", 1"' with the shaped body 6 "', wherein the rod-shaped connecting elements 19, 19' both in the cavities 8 in the molded body 6"'and in the blind holes Bar support members 1,1 ', 1 ", 1'" are anchored.

Not shown, but within the scope of the invention is an addition to this embodiment by a pressure element, as under the FIGS. 1 to 5 described, the rod-shaped connecting elements 19, 19 'encompassing between the end face 16 and the force introduction surface 7 is arranged. The pressure element may be formed in one piece and be penetrated by two connecting elements 19, 19 'or consist of two separate parts, of which in each case a part of a connecting element 19 or 19' is assigned or surrounds them like a ring. In this case, the pressure element may be arranged in depressions in the force introduction surfaces or between planing force introduction surfaces.

The FIGS. 8 to 10 relate constructive variations of the connection area between a first bar support member 1 and mold body 6, which apply to all of the above-described embodiments.

In Fig. 8 one sees the node-side end of a first rod support member 1, whose longitudinal axis is again denoted by 3. The first bar support member 1 ends with a perpendicular to the axis 3 extending end face 16, which has a coaxial recess 18. From the bottom of the recess 18 extend axially parallel to the axis 3, two blind holes 17, 17 '.

The end face 16 axially opposite the force introduction surface 7 of the shaped body 6 is shown. The force introduction surface 7 is also aligned perpendicular to the axis 3 and has a recess 18 axially opposite recess 24, from the bottom of two axially parallel cylindrical cavities 8, 8 'rich in the molding 6. The cavities 8, 8 'are aligned axially with the blind bores 17, 17'.

Rod-shaped connecting elements 19, 19 'are inserted with their one end in the blind holes 17, 17' and with its other end in the cavities 8, 8 'and anchored there, for example glued or screwed. The space 25 formed jointly by the recess 18 and recess 24 serves for the positive reception of a pressure element 20. In this respect, this embodiment differs from that in the FIGS FIGS. 1 to 3 described essentially by the arrangement of a second rod-shaped connecting elements 19 ', which particularly enables the node to absorb bending moments, wherein the one rod-shaped connecting element acts as a push rod and the other rod-shaped connecting element as a pull rod.

From the in Fig. 9 illustrated variant shows that the end face 16 of the first rod support member 1 and the force introduction surface 7 of the shaped body 6 lie flat against each other under contact and are held together by a rod-shaped connecting element 19. The space 25 formed by recess 18 and recess 24 is used in this Variant for receiving a hardenable potting compound 26, which is subsequently injected into the space 25. For this purpose, an obliquely radially extending injection channel 27 is arranged in the end region of the first rod support member 1, which ends in the cylindrical recess 18, and a radially extending vent channel 28 which leads from the space 25 to the outer periphery of the first rod support member 1. After curing, the casting compound 26 forms the pressure element with which transverse forces are transmitted in the connecting joint and compressive forces in the axial direction.

In the Fig. 10 illustrated variant shows a combination of the embodiment according to Fig. 9 with a pressure element 20 'between the first rod support member 1 and molded body 6. The pressure element 20' has an annular shape and is arranged coaxially at a radially clear distance from the rod-shaped connecting element 19. The specific space for the potting compound 25 25 is thus formed by the cylindrical recess 18, the recess 24 and the pressure element 20 ', to which the inner periphery of the pressure element 20' with the peripheral surfaces of the recess 18 and the recess 24 is aligned. In the area of the pressure element 20 ', a radial injection channel 27 extends into the space 25. The associated vent channel 28 also extends in the radial direction from the space 25 to the outer periphery of the first rod support member first

The invention is not limited to the combinations of features described in the individual embodiments, but also includes combinations of features of different embodiments, as far as they are readily apparent to those skilled in the art.

Claims (15)

1. Strut construction made of wood comprising a first strut supporting member (1) and at least one additional strut supporting member (1'. 1", 1"', 1"", 2) which are frictionally interconnected in a junction point, for which purpose a moulded body (6, 6', 6", 6"') is arranged in the region of the junction point, which moulded body comprises a first force-application surface (7) for connection to the first strut supporting member (1) and at least one second force-application surface (7', 7", 7"', 7"", 9) for connection to the additional strut supporting member (1', 1 ", 1"', 1"", 2),

   - the first force-application surface (7) extending perpendicularly to the longitudinal axis (3) of the first strut supporting member (1),

   - at least one cylindrical cavity (8) being arranged in the moulded body (6, 6', 6", 6"'), starting from the first force-application surface (7), coaxially with or axis-parallel to the longitudinal axis (3) of the first strut supporting member (1),

   - at least one hole (17) that is coaxial with or axis-parallel to the longitudinal axis (3) of the first strut supporting member (1) being arranged in the end of the first strut supporting member (1) that faces the first force-application surface (7), and

   - a rod-like connecting element (19) being frictionally anchored both in the at least one cylindrical cavity (8) in the moulded body (6, 6', 6", 6"') and in the at least one hole (17) in the first strut supporting member (1), characterised in that the moulded body (6, 6', 6", 6"') consists of mineral casting, preferably of polymer concrete.
2. Strut construction according to claim 1, characterised in that a force-transmitting compression element (20) is arranged between the first force-application surface (7) and the end of the first strut supporting member (1), the end of the first strut supporting member (1) preferably comprising an axially extending recess (18) in which the compression element (20) is arranged.
3. Strut construction according to claim 2, characterised in that the compression element (20) is formed of a rigid material or a material having resilient or ductile properties, preferably of an elastomer.
4. Strut construction according to either claim 2 or claim 3, characterised in that the compression element (20) is profiled on the force-transmitting surfaces, the compression element (20) preferably being formed as a cylinder or as a disc and being penetrated axially by the rod-like connecting element (19).
5. Strut construction according to any of claims 1 to 4, characterised in that the rod-like connecting element (19) is glued into, screwed into, or cast into one or both holes (17, 17').
6. Strut construction according to any of claims 1 to 5, characterised in that the second force-application surface (7', 7", 7"', 7"") is formed analogously to the first force-application surface (7) according to any of claims 1 to 5.
7. Strut construction according to any of claims 1 to 5, characterised in that the second force-application surface (9) extends in parallel with the longitudinal axis (4) of the second strut supporting member (2) and is arranged on the periphery (5) of the second strut supporting member (2).
8. Strut construction according to claim 7, characterised in that interlocking means for mutual centring are arranged in the contact surface formed by the second force-application surface (9) and the second strut supporting member (2), the interlocking means preferably comprising a centring pin (15) on the second strut supporting member (2), which centring pin engages in a depression (10) in the second force-application surface (9).
9. Strut construction according to either claim 7 or claim 8, characterised by clamping means which penetrate the moulded body (6, 6') and extend into the second strut supporting member (2) in the region of the second force-application surface (9).
10. Strut construction according to any of claims 7 to 9, characterised in that the second strut supporting member (2) comprises an axially acting stop surface on the periphery thereof, which stop surface interacts with an axially acting stop surface on the moulded body (6, 6').
11. Strut construction according to any of claims 1 to 10, characterised in that the moulded body (6, 6', 6", 6"') is formed as a monolithic cast body.
12. Strut construction according to claim 11, characterised in that the moulded body (6, 6', 6", 6"') comprises reinforcing elements, preferably reinforcing fibres.
13. Strut construction according to any of claims 1 to 12, characterised in that the first strut supporting member (1) is connected to the moulded body (6, 6', 6", 6'") by means of a plurality of rod-like connecting elements (19, 19'), preferably by means of two or three connecting elements (19, 19').
14. Strut construction according to any of claims 1 to 13, characterised in that, in the region of the first connection surface (7), the moulded body (6) comprises a recess (24) that is axially opposite the end-face recess (18) in the first strut supporting member (1), the entire cavity (25) formed by the two recesses (18, 24) being filled with a curable filling compound (26).
15. Strut construction according to any of claims 1 to 14, characterised in that an annular compression element (20') is arranged between the first connection surface (7) and the end of the first strut supporting member (1) and the region radially inside the compression element (20') is filled with a curable filling compound (26), the filling compound preferably being rigid or having resilient, elastoplastic or ductile properties after it has cured.

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