Foundation structure consisting of a reinforced concrete foundation and a support body having a connection arrangement

Abstract

The invention relates to a foundation structure (1) consisting of a reinforced concrete foundation (10) and a support body (11), wherein a connection arrangement (12) is configured by means of which the support body (11) is connected to the reinforced concrete foundation (10). According to the invention, the connection arrangement (12) has at least one pipe section (13) which is connected to at least one reinforcement element (14) of the reinforced concrete foundation (10), and wherein the support body (11) has at least one rod element (15) which projects into the pipe section (13) or penetrates same, wherein at least one plate element (16) is arranged adjacent to the pipe section (13) by means of which the rod element (15) is braced against the pipe section (13).

Description

[0001] FOUNDATION STRUCTURE CONSISTING OF A REINFORCED CONCRETE FOUNDATION AND A SUPPORTING BODY WITH A CONNECTION ARRANGEMENT

[0002] Description

[0003] The invention relates to a foundation structure comprising a reinforced concrete foundation and a support body, wherein a connecting arrangement is provided with which the support body is connected to the reinforced concrete foundation.

[0004] Prefabricated reinforced concrete foundations with supporting structures, such as columns, pillars, walls, and trusses, or even supporting structures with reinforced concrete foundations already cast in concrete, are becoming increasingly important due to the higher costs, shortage of skilled workers, and lower CO2 emissions associated with on-site construction of such structures. For example, the reinforced concrete foundation and the supporting structure are delivered separately to the foundation assembly site, and the connection between the reinforced concrete foundation and the supporting structure is only established on-site using a connecting arrangement. The connecting arrangement must be designed to allow large forces and moments to be transferred between the supporting structure and the reinforced concrete foundation, particularly vertical supporting forces and lateral shear forces that cause large bending moments.

[0005] When constructing a reinforced concrete foundation, an excavation pit is usually first created, which is then reinforced with a so-called blinding layer, such as lean concrete, onto which the foundation can then be adjusted in height. The height of the reinforced concrete foundation is adjusted using shims made of steel or plastic, for example, and the resulting construction joint is filled with high-strength, low-shrinkage mortar.

[0006] Structures with a reinforced concrete foundation and a support body, particularly manufactured as a prefabricated foundation, are known in the art and are referred to as so-called Swedish feet. These are concrete components with a concrete slab and a concrete-attached pipe or socket into which the prefabricated column is embedded and cast during assembly. Such Swedish feet can transfer loads from the support body and divert them into the reinforced concrete foundation. The disadvantage of such systems is the large dimensions of the Swedish foot due to its bulky design, and their transportability is limited. In this respect, it is desirable to create a connection arrangement between the reinforced concrete foundation and the support body that can transfer forces similar to a foundation structure consisting of a reinforced concrete foundation with a support body cast onto it as a single piece.For example, EP 1 748 119 B1 teaches a foundation structure comprising a reinforced concrete foundation and a support body, wherein a connecting arrangement is provided by which the support body is connected to the reinforced concrete foundation. To connect the support to the foundation, lugs are provided at the top of the foundation and at the bottom of the support. These lugs have aligned bores when the support is mounted on the foundation, so that the respective lugs are connected with bolt elements. Unfortunately, tight tolerances must be maintained for this, since the bolts must be driven through eyes in the lugs. The connecting arrangement thus formed can then be cast with a mineral casting.

[0007] EP 1 857 602 A1 discloses a device for fastening a concrete column to a concrete foundation, wherein the foundation has at least one foundation shoe, and wherein the foundation shoe has at least one anchor strut that projects into the foundation, wherein the foundation shoe is connectable to the column. The foundation shoe is connectable to at least one anchor bolt that projects into the concrete column. The foundation shoe also has at least one bore for receiving the anchor bolt. Furthermore, it is provided that the anchor bolt can be screwed to the foundation shoe, and that a gap exists between the underside of the concrete column and the top of the foundation.

[0008] From WO 2012 / 056100 A1, a column shoe for fastening reinforced concrete columns to a base is known, wherein the column shoe comprises a bolt housing comprising a base plate provided with a bolt hole and a side plate; and further comprising main fastening units fastened to the bolt housing to hold the column shoe and the reinforced concrete column together, wherein the bolt housing is produced by casting, such that the bolt housing forms a one-piece casting having a base plate and a side plate and a one-piece casting with a base plate and a side plate is created.

[0009] The utility model DE 296 15 755 U1 discloses a

[0010] Anchoring element for reinforced concrete structures, wherein a disc which has a cover surface and a base surface and, at an edge distance on all sides, a projection projecting from the cover surface, in which a through hole with an internal thread is formed which is at least approximately open in the area of ​​the base surface and perpendicular to it, into which anchoring rods provided with external thread sections can be screwed from both sides, and wherein an integrally formed extension arm runs on the disc in the thickness area between its cover and base surfaces.

[0011] The connection arrangements known from the prior art are relatively complex and consist of a large number of details, some of which also have to be manufactured themselves at great expense.

[0012] DISCLOSURE OF THE INVENTION

[0013] The object of the invention is to improve a foundation structure consisting of a reinforced concrete foundation and a support body with a connecting arrangement that can be easily provided and with which high forces and moments can be transmitted. This object is achieved based on a foundation structure according to the preamble of claim 1 with the characterizing features. Advantageous developments of the invention are specified in the dependent claims.

[0014] The invention includes the technical teaching that the connecting arrangement has at least one pipe section which is connected to at least one reinforcement element of the reinforced concrete foundation, and wherein the support body has at least one rod element which projects into or penetrates the pipe section, wherein at least one plate element is arranged adjacent to the pipe section, via which plate element the rod element is clamped to the pipe section.

[0015] The core idea of ​​the invention is to provide at least one or preferably several pipe sections as the central element of the connecting arrangement, which serve as force-transmitting intermediate elements between the reinforced concrete foundation and the support body. The reinforced concrete foundation can be easily connected to the pipe section(s) with at least one reinforcement element, while the rod element of the support body is clamped to or against the pipe section(s), for example with screw nuts. The pipe section can, for example, have a diameter-to-length ratio of approximately 1:1, although deviations of, for example, 50% or more in both dimensional directions are possible.For example, it is conceivable for the tubular element to have a diameter, or in the case of a non-circular cross-section, a generally diametrical dimension, that is up to half the height of the tubular section or up to twice the height of the tubular section. The tubular section forms a tubular element and is arranged between the reinforced concrete foundation and the support body in such a way that it does not protrude into the mineral casting of the reinforced concrete foundation, and the support body only protrudes into the tubular element with its rod element. However, it is conceivable that, with regard to an upper side of the reinforced concrete foundation, the tubular element is arranged above, in the surface, or below the surface, for which the concrete body of the reinforced concrete foundation has a corresponding recess.

[0016] If only a single plate element is installed, it is preferably arranged on the flat end of the pipe section opposite the support body. For example, using a screw nut screwed onto the rod element, the plate element and the pipe section can be clamped against the underside of the support body. Alternatively, the underside of the support body can rest on the top side of the reinforced concrete foundation, and the clamping can also be achieved this way.

[0017] According to a preferred embodiment, a lower plate element and an upper plate element are arranged in connection with each pipe section, so that both plate elements close the open end sides of the pipe section and wherein the rod element penetrates both plate elements and is clamped to them, or it is provided that a uniform upper plate element is arranged over all pipe sections.

[0018] It is therefore advantageously possible for both plate elements to be screwed together with a first screw nut adjacent to the lower plate element and a second screw nut adjacent to the upper plate element, with the pipe section being located in the screw bracing between the plate elements. The position, in particular the vertical alignment of the support body, above the reinforced concrete foundation can thus be adjusted by adjusting the two screw nuts on the rod element so that, for example, the support body is arranged vertically above the reinforced concrete foundation. If a uniform plate element is set up on the upper side across all pipe sections, the number of individual parts required to form the connecting arrangement can be reduced, and the uniform upper plate element can be designed as a single structure with the support body and, in particular,optionally be welded at least at certain points to the rod elements in the support body.

[0019] The pipe section can have a round, oval, rectangular, or polygonal cross-sectional shape, whereby it is also conceivable for the plate elements to have an outer contour that is adapted to the cross-sectional shape of the pipe section. For example, the plate element must have at least one outer circumference that projects beyond the inner circumference of the pipe section in order to create an overlap and achieve a supporting effect of the plate element on the pipe section. For example, the cross-sectional shape of the plate elements can correspond to the outer cross-section of the pipe section.

[0020] The pipe section is particularly advantageously connected to the reinforced concrete foundation using two or more reinforcement elements. The reinforcement elements can be connected to the pipe section in diametrically opposed positions, i.e., at 180° opposite positions. For this purpose, welds can be provided, for example, with which the reinforcement elements, for example in the form of round or rectangular rods, are welded to the outside of the pipe section.

[0021] With particular advantage, the reinforcement elements form extended parts of a reinforcement cage that protrude from the reinforced concrete foundation and penetrate the reinforced concrete foundation, stiffening it in a conventional manner.

[0022] If the reinforced concrete foundation has a recess below the arrangement of at least one or more pipe sections, this provides the advantage that a tool can be placed through the recess on the lower, first screw nut to twist or tighten it on the external thread of the rod element, thus creating the bracing between the two screw nuts and the plate elements. Such a recess is particularly necessary if the pipe section is installed at or below the surface of the top of the reinforced concrete foundation.

[0023] For example, two, four, six or more pipe sections can be connected to the reinforced concrete foundation via assigned reinforcement elements, so that with multiple pipe sections with respective reinforcement elements and assigned rod elements from the support body, a connection arrangement can be created that can transmit very high forces and moments. The multiple pipe sections are arranged in a regular formation above the reinforced concrete foundation, for example in two rows of three if six pipe sections are provided. If four pipe sections are provided, their position can form a rectangle or a square, for example. The support body is constructed, for example, from a reinforced concrete component, although the support body can also consist of just one steel component, for example a beam or the like, or a wooden component.If the support body is made of a reinforced concrete component, the rod element of the support body can also form a reinforcement body of the support element.

[0024] To accommodate the screw nuts, the rod element has at least in sections an external thread onto which at least one or both screw nuts are screwed.

[0025] After its manufacture, the connecting assembly can be cast in, in particular, with a mineral casting. The pipe section preferably has an opening in its pipe wall on the top and / or bottom, so that when the connecting assembly is cast in, the interior of the pipe section can also be filled with the mineral casting. Depending on the material, the mineral casting provides the connecting assembly with special corrosion protection.

[0026] The invention further relates to a connecting arrangement for forming a foundation structure from a reinforced concrete foundation and a support body, such that the support body is connected to the reinforced concrete foundation, wherein the connecting arrangement has at least one pipe section which is connected to at least one reinforcement element of the reinforced concrete foundation, and wherein the support body has at least one rod element which projects into or penetrates the pipe section, wherein at least one plate element is arranged adjacent to the pipe section, via which plate element the rod element is clamped to the pipe section.The foundation structure described above with the described connection arrangement results in a high-strength connection between a support body and a reinforced concrete foundation, wherein the connection arrangement is simply constructed and consists of easily available components, wherein in particular the pipe section, but optionally also the reinforcement element and / or the rod element, can be made of CrNi steel.

[0027] PREFERRED EMBODIMENT OF THE INVENTION

[0028] Further measures improving the invention are described in more detail below, together with the description of a preferred embodiment of the invention, with reference to the figures. It shows:

[0029] Figure 1 is a perspective view of the foundation structure consisting of a reinforced concrete foundation and a support body with a connecting arrangement,

[0030] Figure 2 is a perspective view of a reinforcement cage as part of the reinforced concrete foundation with pipe sections connected to the top,

[0031] Figure 3 is a side view of the movement basket according to Figure 2,

[0032] Figure 4 is a cross-sectional view of the foundation structure consisting of the reinforced concrete foundation, the support body and the connection arrangement,

[0033] Figure 5a shows the side view of the reinforcement cage with the pipe sections, Figure 5b shows a top view of the pipe sections with attached reinforcement elements,

[0034] Figure 5c shows a single view of a pipe section,

[0035] Figure 6 is a cross-sectional view of the connection arrangement with a pipe section and

[0036] Figure 7 is a cross-sectional view of the connecting arrangement with a unitary upper plate element.

[0037] Figure 1 shows a perspective view of the foundation structure 1 comprising a reinforced concrete foundation 10 and a support body 11. A connecting arrangement 12 is provided for connecting the support body 11 and the reinforced concrete foundation 10, so that the foundation structure 1 thus formed can, for example, be used to form an arrangement of a support with a foundation for a building. For this purpose, the reinforced concrete foundation 10 is embedded in the ground in a manner not shown in detail and secured accordingly, wherein the securing may already be provided by the mass of the reinforced concrete foundation 10. The support body 11 generally extends vertically from the top side of the reinforced concrete foundation 10 and can itself be made of a reinforced concrete component, wherein it is also conceivable for the support body 11 to form a steel component, for example a box girder or a double-T girder, or a wooden component.

[0038] According to the invention, the connecting arrangement 12 comprises a pipe section 13 that serves as a connecting link between the reinforced concrete foundation 10 and the support body 11. The view shows six pipe sections 13 in a two-row formation, so that there are three pipe sections 13 at the front and three pipe sections 13 at the rear. The pipe sections 13 are connected to the reinforced concrete foundation 10 by means of reinforcement elements 14, with the reinforcement elements 14 protruding from the top of the reinforced concrete foundation 10, and the individual pipe sections 13 are each accommodated between two reinforcement elements 14.

[0039] Figures 2 and 3 show, in a perspective and a side view, a reinforcement cage 20 with the vertically extending reinforcement elements 14, which accommodate the pipe sections 13 on the upper side. The reinforcement cage 20 shown can be enclosed in the reinforced concrete foundation 10 according to Figure 1 by being predominantly or completely enclosed with mineral casting, wherein the pipe sections 13 are kept free on the upper side, either by protruding from the reinforced concrete foundation 10 or by providing a recess 21 in the reinforced concrete foundation on the upper side, as shown in Figure 3.

[0040] On the underside, the reinforcement cage 20 terminates with a base plate 24, which can simultaneously terminate with the floor level of the entire reinforced concrete foundation 10 according to Figure 1.

[0041] The views show that two reinforcement elements 14 are arranged relative to one another in such a way that a pipe section 13 is accommodated between two or more reinforcement elements 14 at the upper end of the reinforcement elements 14. In a manner not shown in detail, the pipe sections 13 are welded to the upper ends of the reinforcement elements 14. The diametrical arrangement of the reinforcement elements 14 on the outer circumference of the pipe sections 13 changes by 90° from one pipe section 13 to the adjacent pipe section 13. Figure 4 shows a cross-sectional view of the entire foundation structure with the reinforced concrete foundation 10 on the underside, the connecting arrangement 12, and the upper support body 11.The sectional view shows the reinforcement cage 20 within the reinforced concrete foundation 10, wherein the reinforcement elements 14 protrude so far from the top of the reinforced concrete foundation 10 that they accommodate the pipe sections 13 and these are also positioned above the top of the reinforced concrete foundation 10.

[0042] The view shows the rod elements 15 of the support body 11, which can also form reinforcement elements, and the rod elements 15 protrude from above into the pipe sections 13 and are screwed to the top and bottom of the pipe sections 13. The view shows the easy accessibility of the screw nuts 18 and 19, with plate elements 16, 17 being arranged on the top and bottom of the pipe sections 13 for screwing the rod elements 15 to the pipe sections 13. This has the advantage that, by precisely bracing the screw nuts 18, 19 against one another, an alignment of the support body 11 relative to the reinforced concrete foundation 10 is possible. The connecting arrangement 12 thus also has an adjustment option. The screw nuts 18, 19 form an adjustment unit.

[0043] Figure 5a shows the reinforcement cage 20 from the side, so that it can be seen that two reinforcement elements 14 in the form of vertical rods each hold a raw section 13, so that the pipe sections 13 are each enclosed by two laterally arranged reinforcement elements 14, while the reinforcement elements 14 for enclosing the pipe sections 13 are shown one in front of the other on the left and right sides, see also Figure 5b. Figure 5c shows an individual pipe section 13 according to the circle in Figure 5a, and it can be seen that a notch has been made on the upper and lower side to form an opening 23. Through the opening 23 in its pipe wall, the mineral casting, for example mortar or concrete, can also reach the interior of the pipe section 13 during later casting with mineral casting and can also pour this out, thereby achieving very advantageous corrosion protection for the connection arrangement.

[0044] Finally, Figure 6 shows a cross-sectional view of the connecting arrangement 12, wherein the reinforcement elements 14 are shown in sections coming from the reinforced concrete foundation and the support body only from the underside and a rod element 15 is shown coming from the top.

[0045] The view illustrates the arrangement of the pipe section 13 between a lower plate element 16 and an upper plate element 17, wherein at least on the section of the rod element 15 shown, an external thread 22 is applied, onto which a first screw nut 18 adjacent to the lower plate element 16 and a second screw nut 19 adjacent to the upper plate element 17 are screwed onto the external thread 22. By clamping the screw nuts 18, 19 against each other, a rigid arrangement of the rod element 15 together with the plate elements 16, 17 on the pipe section 13 is achieved.

[0046] The pipe section 13 is connected to the reinforcement elements 14 via welded joints 25, wherein, for example, the reinforcement elements 14 are welded to the outer peripheral surface of the pipe section 13 at two diametrically opposite positions. Alternatively, it is conceivable to weld the reinforcement elements 14, for example, with a butt joint on the underside of the pipe element 13. The view also shows two openings 23 through which a mineral casting can also reach the interior of the pipe section 13 when the connection arrangement 12 is cast.

[0047] Finally, Figure 7 shows a further exemplary embodiment, according to which a single upper plate element 17' is uniformly designed over all pipe sections 13. The uniform upper plate element 17' formed in this way thus covers all pipe sections 13 and replaces the individual upper plate elements 17 according to the preceding exemplary embodiments with only one plate-like element. The uniform upper plate element 17' has, in particular, a number of openings through which the rod elements 15 of the support body 11 can be passed, so that they protrude again from the lower end side of the pipe sections 13 and so that the individual lower plate elements 16 can then be placed on top and screwed onto the rod elements 15 with the screw nuts 18 on the underside.This provides the advantage that the uniform upper plate element 17' can form the lower end of the support body 11, and so that the support body 11, together with the connected, uniform upper plate element 17', can be placed on the respective upper sides of the pipe sections 13. The screw nuts 18 on the underside can then be counter-tightened against the uniform upper plate element 17.

[0048] The example shows a recess 21 on the upper side of the reinforced concrete foundation 10, which, after screwing and thus after the production of the connecting arrangement 12, can be filled with additional mineral casting, in particular mortar, cement, concrete or another casting compound, in order to prevent rusting of the steel components of the connecting arrangement 12 and so that the lower end of the support body 11 can form a uniform end with the upper side of the reinforced concrete foundation 10. The reinforcement cage 20 with the reinforcement elements 14 is thus completely and completely enclosed in the reinforced concrete foundation 10, so that only the base plate 24 forms an outwardly accessible lower end of the reinforcement cage 20. It is also conceivable that the uniform upper plate element 17' can already be cast in the mineral casting for the production of the support body 11 together with the rod elements 15.

[0049] For simplification, the uniform plate element 17' can also be welded in advance, at least at certain points, to the rod elements 15. Furthermore, it is conceivable for the uniform upper plate element 17' to have the same cross-sectional dimensions as the support body 11, so that the upper plate element 17', preferably made of steel, completely encloses the underside of the support body 11. According to the illustration, the uniform upper plate element 17' can also be smaller. Within the scope of the invention, the uniform upper plate element 17' can also have a format that is larger than the cross-sectional dimensions of the support body 11.The uniform upper plate element 17' can particularly advantageously also assume a position in the recess 21 that lies below the surface of the reinforced concrete foundation 10 in order to create an oxygen barrier for all preferably metallic components involved in the connection arrangement 12, in particular the uniform upper plate element 17', the pipe sections 13 and / or the screw nuts 18 and the reinforcement elements 14, after the recess 21 has been filled with a casting compound, in particular also concrete or polymer concrete. The invention is not limited in its embodiments to the preferred embodiment specified above. Rather, a number of variants are conceivable, which also utilize the solution presented in fundamentally different designs.All features and / or advantages arising from the claims, the description or the drawings, including structural details or spatial arrangements, may be essential to the invention both individually and in a wide variety of combinations.

[0050] List of reference symbols:

[0051] I Foundation construction

[0052] 10 reinforced concrete foundation

[0053] II Support body

[0054] 12 Connection arrangement

[0055] 13 Pipe section

[0056] 14 Reinforcement element

[0057] 15 rod element

[0058] 16 lower plate element

[0059] 17 upper plate element

[0060] 17' uniform upper plate element

[0061] 18 first screw nut

[0062] 19 second screw nut

[0063] 20 reinforcement cage

[0064] 21 recess

[0065] 22 external threads

[0066] 23 Opening

[0067] 24 Base plate

[0068] 25 Weld seam

Claims

Claims:

1. Foundation structure (1) comprising a reinforced concrete foundation (10) and a support body (11), wherein a connecting arrangement (12) is provided with which the support body (11) is connected to the reinforced concrete foundation (10), characterized in that the connecting arrangement (12) has at least one pipe section (13) which is connected to at least one reinforcement element (14) of the reinforced concrete foundation (10), and wherein the support body (11) has at least one rod element (15) which projects into or penetrates the pipe section (13), wherein at least one plate element (16) is arranged adjacent to the pipe section (13), via which plate element the rod element (15) is clamped to the pipe section (13).

2. Foundation structure (1) according to claim 1, characterized in that a lower plate element (16) and an upper plate element (17) are arranged in connection with each pipe section (13), wherein both plate elements (16, 17) close the open end sides of the pipe section (13) and wherein the rod element (15) penetrates both plate elements (16, 17) and is braced with them or it is provided that a uniform upper plate element (17') is arranged over all pipe sections (13).

3. Foundation structure (1) according to claim 1 or 2, characterized in that that both plate elements (16, 17) are screwed together with a first screw nut (18) adjacent to the lower plate element (16) and with a second screw nut (19) adjacent to the upper plate element (17), and the pipe section (13) is located in the screw clamp between the plate elements (16, 17).

4. Foundation structure (1) according to one of claims 1 to 3, characterized in that the pipe section (13) has a round, oval, rectangular or polygonal cross-sectional shape and / or wherein the plate elements (16, 17) have an outer contour which is adapted to the cross-sectional shape, the diameter, the edge length and / or the other outer or inner contour of the pipe section (13).

5. Foundation structure (1) according to one of the preceding claims, characterized in that the pipe section (13) is connected to the reinforced concrete foundation (10) by means of two reinforcement elements (14).

6. Foundation structure (1) according to one of the preceding claims, characterized in that the reinforcement elements (14) are connected to the pipe section (13) in diametrically opposite positions.

7. Foundation structure (1) according to one of the preceding claims, characterized in that the reinforcement elements (14) are part of a reinforcement cage (20) which penetrates the reinforced concrete foundation (10).

8. Foundation structure (1) according to one of the preceding claims, characterized in that the reinforcement elements (14) are welded to the outside of the pipe section (13).

9. Foundation structure (1) according to one of the preceding claims, characterized in that the reinforced concrete foundation (10) has a recess (21) below the pipe sections (13).

10. Foundation structure (1) according to one of the preceding claims, characterized in that two, four, six or more pipe sections (13) are connected to the reinforced concrete foundation (10) via associated reinforcement elements (14) and / or that the support body (11) has an associated number of rod elements (15) in the same arrangement, wherein the rod elements (15) are designed analogously to the arrangement of the pipe sections (13).

11. Foundation structure (1) according to one of the preceding claims, characterized in that the support body (11) forms a reinforced concrete component, a steel component or a wooden component, wherein the rod element (15) forms a reinforcement body of the support body (11) if this is a steel component.

12. Foundation structure (1) according to one of the preceding claims, characterized in that that the rod element (15) has at least in sections an external thread (22) onto which the first screw nut (18) and / or the second screw nut (19) is screwed.

13. Foundation structure (1) according to one of the preceding claims, characterized in that the connecting arrangement (12) is cast with a mineral casting when the connection between the reinforced concrete foundation (10) and the support body (11) is established.

14. Foundation structure (1) according to one of the preceding claims, characterized in that the pipe section (13) has an opening (23) in its pipe wall, so that when the connecting arrangement (12) is cast in with the mineral casting, the interior of the pipe section (13) can also be poured out.

15. A connecting arrangement (12) for forming a foundation structure (1) from a reinforced concrete foundation (10) and a support body (11), such that the support body (11) is connected to the reinforced concrete foundation (10), characterized in that the connecting arrangement (12) has at least one pipe section (13) which is connected to at least one reinforcement element (14) of the reinforced concrete foundation (10), and wherein the support body (11) has at least one rod element (15) which projects into or penetrates the pipe section (13), wherein at least one plate element (16) is arranged adjacent to the pipe section (13), via which plate element the rod element (15) is clamped to the pipe section (13).

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