Tunnel lining element

Abstract

The present invention relates to a tunnel lining element 10 having at least two tunnel lining segments 11 provided with a body 20, said tunnel lining segments 11 having two short sides 17 located opposite each other, at which at least two of said tunnel lining segments 11 are connected to each other, so that said tunnel lining element 10 is a closed element. In that case, at least one first connecting element 13 is arranged at said first short side of said tunnel lining segment 11, and at least one second connecting element 14 is arranged at said first short side of said tunnel lining segment 11, said connecting elements 13, 14 of two tunnel lining segments 11 forming a connection 15 within a connection part 12, said connecting elements 13, 14 each having at least one base body 30, 40, at least one flange part 33, 43 being provided in each of said base bodies 30, 40, and a connection 15 in an engagement state by friction being provided between said connecting elements 13, 14 via at least one of said flange parts 33 of said first connecting element 13 and at least one of said flange parts 43 of said second connecting element 13.

Description

Technical Field

[0001] The present invention relates to a tunnel lining element having at least two tunnel lining segments provided with a body, wherein the tunnel lining segments have two short side faces facing each other, and on these short side faces, at least two of the tunnel lining segments are connected to each other, and thus the tunnel lining element is a closed element. Furthermore, the present invention relates to a system and a method for the construction of a horizontal borehole in soil.

Background Art

[0002] The excavation of a borehole in soil, for example the construction of a tunnel or a pipeline, from a starting point to a target point, is carried out using different methods depending on the diameter of the borehole to be constructed.

[0003] In the so-called microtunneling method, starting from a starting pit, a prefabricated lining ring, for example a concrete pipe body, is pressed into the soil via a press frame, and thereby an excavation device, for example a tunnel excavation, is moved from the starting point to the target point. In that case, the prefabricated first lining ring is moved over the entire length of the borehole from the starting pit to the target pit. By arranging the lining rings in succession and pressing them into the soil inside these lining rings, the tunnel is excavated and at the same time lined.

[0004] Another method is such tunneling under the use of so-called segment lining for the lining of the borehole. In that case, the lining segments are transported through the already constructed tunnel to the tunneling site in order to be positioned at the borehole wall and ultimately serve as the tunnel lining on site. To achieve further excavation progress, in the constructed tunnel ring, the tunnel boring machine is pushed apart using hydraulic cylinders.

[0005] For example, in the arrangement of a borehole having a diameter greater than 4 m, there arises the problem that a prefabricated lining ring can no longer be transported to the construction site as one element in the prefabricated state without any problems due to its size (dimensions or weight).

[0006] Furthermore, when the borehole is shorter than 1 km, there exists the problem that the cost for the arrangement of a tunnel boring machine for which segment lining can be used is extremely high. SUMMARY OF THE INVENTION PROBLEM TO BE SOLVED BY THE INVENTION

[0007] The problem of the present invention is thus to propose the possibility that an inexpensive microtunneling method can also be used for diameters greater than 4 m. MEANS FOR SOLVING THE PROBLEM

[0008] For this purpose, the present invention intends that the tunnel lining element is divided into at least two tunnel lining segments, and these tunnel lining segments are each connected via a corresponding number of connecting elements that matches the number of tunnel lining elements. This connection, and accordingly, the manufacture of the tunnel lining element, is carried out on site at the construction site near the starting point or directly at the starting point. For this purpose, the invention contemplates a tunnel lining element according to claim 1 or 17, a system according to claim 26, and a method according to claim 28, which are further specifically configured in accordance with the dependent claims.

Advantages of the Invention

[0009] Regarding the tunnel lining element, in that case, according to the invention, at least one first connecting element is arranged on the first said short side of the tunnel lining segment, and at least one second connecting element is arranged on the first said short side of the tunnel lining segment, the connecting elements of two tunnel lining segments form a connection in the connection part, the connecting elements each have at least one base body, at least one flange part is provided on each of the base bodies, and a connection in a friction engagement state is provided between the connecting elements via at least one said flange part of the first said connecting element and at least one said flange part of the second said connecting element, is contemplated. Advantageously, the connection is also configured to be watertight.

[0010] In that case, it is advantageous that the arrangement of the tunnel lining element according to the invention enables a cost-effective microtunnel method to be used at a larger diameter and, in some cases, a shorter excavation length.

[0011] Yet another teaching according to the invention is that at least one flange part of the first said connecting element has at least one perforation, and at least one flange part of the second said connecting element has at least one perforation, and the perforations are It is intended that these perforations be arranged in a straight line when arranging the tunnel lining segments for the manufacture of the connection part. In this way, a sufficient connection part can be provided in a simple way and at low cost.

[0012] In that case, a fastening element, preferably a screw having a screw head and a nut, is arranged in the perforations arranged in a straight line. It is advantageous that the connection part in the engagement state by the friction is provided via this fastening element. In this way, a sufficient connection part can be provided in a simple way and at low cost.

[0013] A further teaching according to the present invention is that a surrounding element is provided, and this surrounding element is intended to surround two flange parts arranged opposite to each other. In that case, the surrounding element is a C-shaped element, preferably a clamp having a rear wall, an upper protrusion and a lower protrusion, and at least one perforation is provided in the upper protrusion. It is advantageous that a connection element can be inserted into this perforation in order to provide the connection part in the engagement state by the friction between the connection elements. It has been unexpectedly shown that such a connection part enables sufficient force removal in this connection part.

[0014] A further teaching according to the present invention is that an angle member is provided, and this angle member is fixed to one flange part and is intended to surround the flange parts arranged opposite to each other. In that case, it is advantageous that the angle member has a side part and an engagement element arranged on this side part. In this way, a sufficient connection part can be provided in a simple way and at low cost.

[0015] A further teaching according to the present invention then preferably intends that a hollow chamber for the insertion of a clamping element is provided between the flange parts in that case.

[0016] A further teaching according to the present invention then preferably intends that at least one perforation is provided in the flange part of the first connecting element, and that a clamping element can be inserted into the perforation in order to provide a frictionally engaged connection between the connecting elements in that case.

[0017] A further teaching according to the present invention then preferably intends that one surface of the flange part is a wedge-shaped surface in that case.

[0018] In that case, in order to provide a form-fitting connection with the clamping element, it is advantageous if locking projections are provided in the wedge-shaped surface.

[0019] A further teaching according to the present invention then preferably intends that the clamping element has a wedge shape that corresponds to the wedge-shaped surface of the flange part in that case.

[0020] A further teaching according to the present invention intends that a gap exists between the flange parts in the state of the frictionally engaged connection in that case. This gap preferably exists at least in the region remote from the edge. This enables a spatially clearly defined and thus reliable force transmission in a simple manner, particularly preferably in the region close to the edge. Furthermore, a clearly defined preload is possible in these connections.

[0021] A further teaching according to the present invention then preferably intends that at least one spacer is provided between the base bodies in that case.

[0022] In that case, it is advantageous if at least one of said spacing elements is firmly connected to one of the base bodies within said base body and on the outer face of this base body.

[0023] In that case, furthermore, it is advantageous if at least one spacing element is provided on the longitudinally extending inner face and if at least one spacing element is provided on the longitudinally extending outer face.

[0024] In the case of a tunnel lining element, in that case, according to the invention, at least one first connecting element is arranged on said first short face of said tunnel lining segment and at least one second connecting element is arranged on said first short face of said tunnel lining segment, the connecting elements of two tunnel lining segments form a connection in the connection part, the connecting elements each have at least one base body and the connection part is a connection part in an engaged state by material, is intended.

[0025] In that case, it is advantageous if the connection part in an engaged state by material is a welded or glued connection between the base bodies.

[0026] In that case, furthermore, for the production of the connection part in an engaged state by material, the base bodies are at least partly connected by welding seams over the circumference and / or the base bodies each have one outer face, and these outer faces are advantageously connected flush with one another by contact welding or an adhesive.

[0027] Furthermore, a further teaching for both embodiments indicates that the base body is firmly connected to the body.

[0028] Furthermore, another teaching for both embodiments indicates that the body consists of reinforced concrete, in particular polymer concrete, steel, composite material, GFK, or a synthetic substance.

[0029] Furthermore, another teaching for both embodiments indicates that the tunnel lining element is ring-shaped and that the tunnel lining segment has the shape of a circular segment.

[0030] Furthermore, another teaching for both embodiments indicates that the connection is configured to be watertight. In that case, it is advantageous that the watertightness is provided by a sealing element between the base bodies, or between one base body and one spacer, by insertion and / or application of a sealing means, or by a connection of the engagement state by a material.

[0031] Furthermore, another teaching for both embodiments is that at least one protrusion, preferably in the form of a thrust protrusion, is provided in the connection or in at least one of the connection elements for the transmission of shear stress, and on the opposite side, at least one recess is provided in the connection or in at least one further said connection element. It is provided for the production of a shape engagement within the connection or between the connection elements of the tunnel lining segment. This is shown.

[0032] Regarding the system according to the invention, this teaching is a system for the construction of a perforation in the soil, preferably basically horizontally, from a starting point to a target point along an excavation line, the system having an excavation device for the dissociation of the soil, at least one pressing station for the advancement of the excavation device at the starting point. It has a plurality of tunnel lining elements which are arranged behind the excavation device and are advanced in the soil by the press frame, and has a device for supplying the tunnel lining elements to the press frame, wherein the tunnel lining elements are the tunnel lining elements described above, and is intended to do so.

[0033] In that case, it is advantageous if a device for assembling the tunnel lining elements is provided.

[0034] Regarding the method according to the present invention, this teaching is intended for a method for constructing a borehole in the soil, preferably basically horizontally, from a starting point to a target point along an excavation line, In this method, behind the excavation device, continuous tunnel lining elements are arranged and advanced by the press frame, whereby the excavation device is advanced from the starting point by at least one pressing station, wherein the tunnel lining elements are individually supplied to the press frame, wherein the tunnel lining elements are the tunnel lining elements described above, and the tunnel lining elements are manufactured from individual tunnel lining segments by manufacturing connections between the connecting elements of the tunnel lining segments.

[0035] In that case, it is advantageous if the construction within the area of the press frame is carried out by a device.

[0036] The present invention will be explained in detail below with reference to the figures using advantageous embodiments. In that case, FIGS. 1 to 8 show the first embodiment according to the present invention, FIGS. 9 to 14 show the second embodiment according to the present invention, FIGS. 15 to 21 show the third embodiment according to the present invention, and FIGS. 22 to 29 show the fourth embodiment according to the present invention. Specifically, in that case, it is as follows.

Brief Description of the Drawings

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Mode for Carrying Out the Invention

[0038] FIGS. 1 to 29 show four embodiments of the tunnel lining element 10 according to the present invention. The tunnel lining element 10 is here advantageously formed from two tunnel lining segments 11, which are here advantageously connected to each other at two connection parts 12. A larger number of tunnel lining segments 11 and connection parts 12 are here possible depending on the respective diameter of the tunnel lining element 10.

[0039] The number of tunnel lining segments 11 for the assembly of the tunnel lining element 10 then depends in that case on the dimensional settings regarding the size and weight of the individual tunnel lining segments 11. This may in particular be relevant for the transport of these elements and the resulting restrictions.

[0040] Examples 1 to 4 of the present invention, shown herein in FIGS. 1 to 29, differ with respect to the implementation of the connection part 15 in the form of the connection part 12. Here, connection parts 15 with different frictional engagement states or engagement states by material and, preferably, watertight are shown.

[0041] According to the present invention, the tunnel lining segments 11 are each transported to the construction site and there assembled into the tunnel lining element 10 by the on-site manufacture of the connection part 15. Subsequently, the tunnel lining element 10 is moved to the starting point. Optionally, the tunnel lining element 10 is assembled directly at the starting point.

[0042] At the starting point, a press frame is arranged, and this press frame advances, for example, a tunnel boring machine or a shield machine into the soil along the excavation line. After the tunnel boring machine has been introduced into the soil, the first tunnel lining element 10 is connected to the tunnel boring machine and advanced into the soil by the press frame, whereupon the tunnel boring machine excavates the facing soil along the excavation line. This procedure is correspondingly repeated until the tunnel boring machine reaches the target point along the excavation line using further tunnel lining elements 10.

[0043] The individual tunnel lining segments 11 are then in that case moved into the operating area of the press frame from outside the starting point, for example from a pit or from an extension of the tunnel, for example by means of a crane or other lifting means, and as a result are then introduced into the soil.

[0044] Optionally, at or above the starting point, as a component of the press frame, a device is provided to which the individual tunnel lining segments 11 are supplied and by which the tunnel lining segments 11 are then assembled into the tunnel lining element 10. Thus, in that case, the connection 15 can be manufactured in accordance with the embodiments of the invention to be subsequently described.

[0045] A further advantage of the arrangement of the individual tunnel lining segments 11 and of the on-site assembly at the starting point is that the supply and discharge conduits do not necessarily have to be dissociated for each individual tunnel lining element 10. Rather, the tunnel lining element 10 is achieved by the arrangement and connection of the tunnel lining segments 11 around these conduits.

[0046] Advantageously, in that case, the connection 15 is such that the forward force in the excavation direction acting on the tunnel lining element 10 can be transmitted without the connection 15 being impeded in that case, and the pressures and loads such as, for example, inner forces / bending moments, lateral forces, ring normal forces acting radially inwards from the outside by the soil do not impede the connection 15. It is configured.

[0047] In that case, it is intended that, advantageously, the connection 15 is a state of engagement by material (as in embodiment 2 of the invention according to FIGS. 9 to 14) or a state of engagement by friction (as according to FIGS. 1 to 8, and 15 to 29 of embodiments 1, 3 and 4). Advantageously, the connection 15 is also configured to be watertight. Furthermore, a connection with a state of engagement by shape is also possible alone or in combination with one of the connection possibilities mentioned above.

[0048] In that case, advantageously, these tunnel lining segments 11 have the curved shape of a circular ring segment of a tunnel lining element 10, which is advantageously configured in a ring shape here, and particularly advantageously in a circular ring shape.

[0049] In that case, these tunnel lining segments 11 each have one curved end face 16, and when the tunnel lining element 10 is introduced into the soil as described above, this end face embodies the connection surface between the individual tunnel lining elements 10. Furthermore, these tunnel lining segments 11 have short sides 17, on which one first connection element 13 and one second connection element 14 are arranged respectively.

[0050] Depending on the respective requirements and connection modes, it is possible for the first connection element 13 and the second connection element 14 to be configured identically or differently.

[0051] Furthermore, the tunnel lining segment 11 has an outer surface 18 and an inner surface 19.

[0052] It is possible for the outer surface 18 and / or the inner surface 19 to be coated in that case, for example with a composite lining.

[0053] The end face 16, the short side 17, the outer surface 18, and the inner surface 19 form the body 20 in that case. This body 20 advantageously consists of concrete, reinforced concrete, steel, or a composite material, but can equally consist of other materials / composite materials such as GFK (glass fiber reinforced composite) or polymer concrete.

[0054] The short sides 17 are each connected to the first connection element 13 and the second connection element 14.

[0055] Regarding Embodiments 1 to 4 according to the advantageous present invention, the general shape of each individual tunnel lining segment 11 is, in that case, identically configured, however, for specific individual cases, it may need to be adapted depending on the circumstances.

[0056] For example, for the production of the lining element 10 according to the present invention, which consists of reinforced concrete, an embodiment according to the present invention is, in that case, intended in one form, in which the first and second connecting elements 13, 14 are intended to be arranged such that these first and second connecting elements already have a separable connection 15 with each other, or are arranged with respect to each other such that these first and second connecting elements can be connected. In fact, the last connection is, in that case, made for the first time at the starting point or in the vicinity of the starting point, as described above.

[0057] Additionally, if necessary, reinforcing materials are introduced into the weir plate. Subsequently, in accordance with the production and the design of the required parameters, on-site or within a pipe manufacturing factory / precast concrete component manufacturing factory, the concrete is introduced into the formwork until this weir plate is filled. Advantageously, the connecting elements 13, 14 have connecting portions (not shown), which, in that case, produce a corresponding retaining connection with the concrete of the body 20.

[0058] Advantageously, the weir plate is arranged on one of the two planes that is parallel to the end face 16. Furthermore, advantageously, the surfaces of the connecting elements 13, 14 and / or the weir plate have openings through which the air inside the weir plate can leak.

[0059] After the hardening of the concrete, the weir plate is correspondingly opened, and the tunnel lining elements in the connected state are separated (if necessary) and individually removed from the weir plate.

[0060] In an advantageous manner, in which case these tunnel lining segments can be correspondingly reassembled on site into the tunnel lining element 10 again, It is noted which tunnel lining segments 11 were produced together within the formwork. This ensures that the individual tunnel lining segments 11 can optimally be assembled on site into the tunnel lining element 10. Deviations that may occur during the arrangement of the connection part 12, consisting of the first connection element 13 and the second connection element 14, are not important hereby. This is because these connection elements can be correspondingly easily reassembled on site again during the production of the tunnel lining segments.

[0061] Advantageously, a sleeve part 21 is provided on one of the two end side faces 16 of the tunnel lining segment 11, which sleeve part forms a sleeve seal part 22 in the assembled state of the tunnel lining element 10. This sleeve seal part is advantageously embodied hereby in all four embodiments.

[0062] Embodiment 2 according to FIGS. 9 - 14

[0063] In this embodiment, the first connection element 13 and the second connection element 14 are advantageously identically configured. These connection elements each have one base body 30, 40. The base bodies 30, 40 are positioned within the connection part 12 facing each other by their outer side faces 31, 41, and thus a joint 23 is formed.

[0064] Depending on the respective requirements, the joint is welded on the inner face 24, the outer face 25, and / or the end face 26. This provides the connection part 15, which is hereby correspondingly configured in an engaged state by the material.

[0065] To manufacture the connecting part 15 in an engaged state with the same material, optionally, the surfaces 31, 41 can be adhesively bonded to each other.

[0066] For manufacturing the connecting part 15 in an engaged state with the same material, another option is to intend a contact weld of the base bodies 30, 40 at the surfaces 31, 41 of these base bodies.

[0067] To provide sufficient sealing within the connecting part 12, as well as to transmit the tensile force, pressing force, and shear force during the press-fitting of the assembled tunnel lining element 10 when introducing it into the soil, preferably, a weld seam 27 is provided on the inner surface 24 and a weld seam 28 is provided on the outer surface 25.

[0068] Embodiment 3 according to FIGS. 15 - 21

[0069] In the base bodies 40, 41, preferably, laterally arranged webs 32, 42 are provided, and on these webs, horizontally arranged flange portions 33, 43, preferably arranged on both sides, are arranged. In the flange portions, perforations 34, 44 are arranged. The perforations 34, 44 are arranged such that, in the assembled state, they are aligned in a straight line, and thus, a connecting element / clamping element, here a screw 50, can be inserted through these perforations 34, 44. The connecting element / clamping element further has a nut 51, which can be screwed and fixed to the screw portion 52. By screwing and fixing the nut 51 to the screw portion 52 against the lower surface 45 of the flange portion 43, it causes the screw head 53 to be tightened against the upper surface 35 of the flange portion 33, and thus, a preload is generated between both flange portions 33, 43. The upper surface 46 of the flange portion 43 and the lower surface 36 of the flange portion 33, which are positioned facing each other, are, in that case, in contact with each other according to the respective embodiments, or a gap 29 remains between them, particularly in a region far from the edge. For this purpose, spacing members 60, 61 are provided on the inner surface 24 and the outer surface 25, and these spacing members stand on the surfaces 41, 31 respectively. Depending on the height of each of the spacing members 60, 61, the flange portions 33, 43 are in contact, or a gap 29 exists between these flange portions. Correspondingly, when the gap 29 exists, it is particularly easy to introduce a defined preload into the connection portion 15.

[0070] The webs 32, 42 are arranged in the radial direction, from the inner surface 24 to the outer surface 25, advantageously parallel to the end surface 26. Further, the perforations 34, 44 advantageously form a radial row from the inner surface 24 to the outer surface 25.

[0071] When the spacing members 60, 61 are longer than the height of the webs 32, 42 and the height of the flange portions 33, 43 at the height of these spacing members, a gap 29 is formed in the tightened state. At that time, it is advantageous that tensile and compressive forces are transmitted to the outer surface 25 and the inner surface 24 in the connection portion 12 or the connection portion 15 respectively in a defined state.

[0072] To obtain the opening 62, the spacing member 61 is advantageously provided on the inner surface 24 within the region of the flange portions 33, 43, so that the nut 51 and the screw head 53 of the connecting element can be held or moved by a tool to cause tightening.

[0073] The shearing force acting within the connection portion 15 is removed between the spacing members 60, 61, the outer surfaces 31, 41 of the base bodies 30, 40, and the screw 50 as the connecting element when the gap 29 exists.

[0074] Additionally, for the transmission of shear forces within the connection part 15 or in at least one connection element 13 or 14, advantageously, at least one protrusion in the form of a thrust protrusion and, on the opposite side, at least one recess in the connection part 15 or in at least one further separate connection element 14 or 13 are provided for the formation of a form-fit engagement within the connection part or between the connection elements 13 and 14 of the tunnel lining segment 11.

[0075] If there is no gap 29, i.e., if the spacer bodies 60, 61 are, in height, exactly the same height as or lower than the height of the webs 32, 42 and the flange parts 43, 33, a connection element / clamping element, here the screw 50 and the nut 51, causes an engagement by friction between the lower surface 36 and the upper surface 46 of the flange parts 33, 43. Via this engagement by friction, in that case, the shear force is correspondingly transmitted, and also the tensile and compressive forces acting within the connection part 15 are transmitted.

[0076] The spacer body 61 on the outer surface 25 is advantageously provided along the outer surface 25 as an integral body and is advantageously connected in an engagement state by material to one of the base bodies 30, 40 within. After the tunnel lining segment 11 has been assembled into the tunnel lining element 10 and the connection part 15 is provided, then a connection part can also be formed with the other base bodies 30, 40, advantageously in an engagement state by material. This can cause the sealing of the connection part against the outer surface 18 and against the water occurring in the soil. This also applies to other embodiments according to the invention using spacer bodies.

[0077] Optionally or additionally, a sealing element can also be provided in this area.

[0078] For the corrosion protection and production of the continuous upper surface on the inner surface 19 of the tunnel lining element 10, the area of the connection part can be filled, for example, with mortar or other materials. This also applies to other embodiments according to the present invention.

[0079] Embodiment 1 according to FIGS. 1 - 8

[0080] The connection part 12 of the tunnel lining element 10 according to the first embodiment of the present invention has a first connection element 13 having a base body 30 and a second connection element 14 having a base body 40. On the base bodies 30, 40, webs 32, 42 are arranged, and flange portions 33, 43 are provided on these webs, preferably horizontally with respect to both side surfaces of the webs 32, 42. The webs 32, 42 are preferably arranged vertically from the inner surface 24 to the outer surface 25 of the connection part 12 in the radial direction.

[0081] Between the base body 30 and the base body 40, a spacer 60 is provided on the inner surface 24, and preferably, a continuous spacer 61 is provided on the outer surface 25. Depending on whether the spacers 60, 61 are higher than the heights of the webs 32, 42 and the flange portions 33, 43, The lower surface 36 of the flange portion 33 and the upper surface 46 of the flange portion 43 are placed against each other or a gap 29 exists between the flange portion 33 and the flange portion 43 in the assembled state.

[0082] For clamping the flange portions 33, 43, a surrounding element, preferably a clamp 55 here, is provided, and this clamp is preferably configured in a C shape here. The clamp then has a rear wall 56 and two protruding portions 57, 58 arranged parallel to each other, preferably horizontal here. One of these protrusions 57, 58, here preferably the lower protrusion 58, is preferably provided with a projection 59 which extends in the direction of the inner space of the clamp 55.

[0083] In the upper protrusion 57, here preferably a perforation 54 is provided. Preferably, a plurality of perforations 54 arranged in a row are provided over the length of the clamp 55 in the upper protrusion.

[0084] A connecting element 63, here preferably a screw, particularly preferably a bolt with an internal hexagonal socket, is inserted into the perforation 54.

[0085] If these tunnel lining segments 11 are arranged for the tunnel lining element 10 and a connecting part 12 for fixing is provided, the clamp 55 is placed on the upper surface 35 of the corresponding upper flange part. Thus, this clamp 55 grips these flange parts 33, 43 by both protrusions 57, 58 of this clamp and the rear wall 56. Subsequently, a screw as the connecting element 63 is screwed into the perforation 54 (it is also possible that these screws are already inserted in the perforation 54 of the clamp 55), and thus these screws come into contact with the upper surface 35 of the upper flange part 33. By further screwing in, the clamp 55 is moved upwards, and thus the projection 59 comes into contact with the lower surface 45 of the lower flange part 43. By further screwing in the screw as the connecting element 63, when there is no gap 29 between the lower surface 36 of the flange part 33 and the upper surface 46 of the flange part 43, the flange parts are caused to be clamped / preloaded relative to each other. If the gap 29 exists, the spacing retainers 60, 61 are tightened against the base bodies 40, 30. In this way, it is easily possible to introduce the preload in a defined state into the connection.

[0086] In this way, the shear force, or the tensile force and the compressive force, can be transmitted through the connection portion 12.

[0087] It is possible that the spacing holders 60, 61 are also connected to one of the base bodies within the other base body, preferably in an engagement state by material. Additionally, it is possible that the spacing holder 61 is also connected to the other base bodies 30, 40 on the outer surface 25 for sealing, preferably in an engagement state by material. Optionally or additionally, a sealing element may be provided.

[0088] Furthermore, after the assembly and manufacture of the connection portion 15 of the connection portion 12 on the inner surface 19, it is possible to be filled with mortar or other materials to prepare a uniform inner surface 19.

[0089] Embodiment 4 according to FIGS. 22 - 29

[0090] The connection portion 12 also has a first connection element 13 and a second connection element 14 in the fourth embodiment. These connection elements each have one base body 30 and 40. In the radial direction, from the inner surface 24 to the outer surface 25, one web 32, 42 is provided respectively. In the webs 32, 42, one flange portion 33, 43 is provided horizontally parallel to the outer surfaces 31, 41 of the base bodies 30, 40 respectively. Preferably, the flange portions 33, 43 extend to both sides of the webs 32, 42.

[0091] Preferably, the flange portion 33 has a protrusion 37, and this protrusion is arranged in the direction of the upper surface 46 of the lower flange portion 43.

[0092] A wedge element 47 is mounted on the upper surface 46 of the lower flange portion 43.

[0093] An angle material 38 is provided in the flange portion 33, preferably in the protrusion 37, which has a side surface 39 arranged parallel to the web 32 and an engaging element 49 arranged parallel to the outer surface 41 of the basic body 40. The angle 38 is then advantageously arranged releasably on the flange part 33 / projection 37. Advantageously, the angle 38 is screwed to the flange part 33 / projection 37.

[0094] Between the underside 36 of the flange portion 33 and the upper side 46 of the flange portion 43 there is provided a cavity / gap 48 which is bounded on one side by the web 42 and on the other side by the projection 37. In this cavity 48 a tightening element 64 can be inserted.

[0095] The clamping element 64 has an elongated portion 65 that is disposed on a head plate 66 .

[0096] The underside of the elongated portion 65 is then configured correspondingly to the wedge element 47 .

[0097] The wedge element 47 has locking projections 67 which are likewise provided on the underside of the elongated portion 65 as corresponding locking projections 68 .

[0098] By inserting the clamping element 64 or the elongated portion 65 of this element into the cavity 48 until the locking projections 67, 68 engage, the upper side 69 of the engagement element 49 presses the flange portions 33, 43 apart from one another, thus locking the two connecting elements 13, 14 together, thereby creating a clamping therebetween, by means of which the forces introduced into the corresponding connecting part 12 can be dissipated.

Claims

1. A tunnel lining element (10) having at least two tunnel lining segments (11) comprising a body (20), said tunnel lining segments (11) having two short sides (17) facing each other, in which short sides, at least two of said tunnel lining segments (11) are connected to each other, and thus said tunnel lining element (10) is a closed element, in said tunnel lining segments, on the first of said short sides of said tunnel lining segment (11), at least one first connecting element (13) is arranged, and, on the first of said short sides of said tunnel lining segment (11), at least one second connecting element (14) is arranged, said connecting elements (13, 14) of two tunnel lining segments (11) form a connection part (15) within a connection portion (12), said connecting elements (13, 14) each having at least one base body (30, 40), in said base bodies (30, 40), at least one flange portion (33, 43) is provided respectively, and, a connection part (15) in an engaged state by friction is provided between said connecting elements (13, 14) via at least one of said flange portions (33) of the first connecting element (13) and at least one of said flange portions (43) of the second connecting element (13), A tunnel lining element (10) characterized by the above.

2. at least one flange portion (33) of said first connecting element (13) has at least one perforation (34), and, at least one flange portion (43) of said second connecting element (14) has at least one perforation (44), and, The perforations (34, 44) are arranged in a straight line when the tunnel lining segments (11) for the production of the connection part (15) are arranged with these perforations (34, 44). The tunnel lining element according to claim 1, characterized in that it is arranged.

3. In the perforations (34, 44) arranged in a straight line, a clamping element, preferably a screw (50) having a screw head (53) and a nut (51), is arranged. Through this clamping element, the connection part in the engagement state by the friction is provided. The tunnel lining element according to claim 2, characterized in that it is provided.

4. A surrounding element is provided, and this surrounding element surrounds two flange parts (33, 43) arranged opposite to each other. The tunnel lining element according to any one of claims 1 to 3, characterized in that it is provided.

5. The surrounding element is a C-shaped element, preferably a clamp (55) having a rear wall (56), an upper protrusion (57), and a lower protrusion (58), and at least one perforation (54) is provided in the upper protrusion (57). In order to provide the connection part in the engagement state by the friction between the connection elements (13, 14), a connection element (63) can be inserted into this perforation. The tunnel lining element according to claim 4, characterized in that it is provided.

6. An angle member (38) is provided. This angle member is fixed to one of the flange parts (33, 43) and surrounds the flange parts (43, 33) arranged opposite to each other. The tunnel lining element according to any one of claims 1 to 5, characterized in that it is provided.

7. The angle member (38) has a side surface portion (39) and an engaging element (49) disposed on this side surface portion, and the tunnel lining element according to claim 6 is characterized by this.

8. A tunnel lining element according to claim 6 or 7, characterized in that a hollow chamber (48) for insertion of a fastening element (64) is provided between the flange portions (33, 43).

9. In the flange portion (33) of the first connecting element (13), at least one perforation (54) is provided. A tunnel lining element according to any one of claims 6 to 8, characterized in that a fastening element can be inserted into the perforation in order to provide a connection portion in an engaged state by friction between the connecting elements (13, 14).

10. A tunnel lining element according to any one of claims 6 to 9, characterized in that one surface (36, 45) of the flange portions (33, 43) is a wedge-shaped surface.

11. In order to provide a connection in an engaged state by the shape with the fastening element (64). A tunnel lining element according to claim 10, characterized in that protrusions (67) are provided in the wedge-shaped surface.

12. A tunnel lining element according to claim 10 or 11, characterized in that the fastening element (64) has a wedge shape that matches the wedge-shaped surface of the flange portions (33, 43).

13. A tunnel lining element according to any one of claims 1 to 12, characterized in that a gap (29) exists between the flange portions (33, 43) in a state of the connection portion (15) in the engaged state by friction.

14. The tunnel lining element according to any one of claims 1 to 13, characterized in that at least one spacer (60, 61) is provided between the base bodies (30, 40).

15. The tunnel lining element according to claim 14, characterized in that at least one of the spacers (60, 61) is firmly connected to one of the base bodies within the base bodies (30, 40) on the outer surface (31, 41) of this base body.

16. The tunnel lining element according to claim 14 or 15, characterized in that at least one spacer (60) is provided on the longitudinally extended inner surface (24), and at least one spacer (61) is provided on the longitudinally extended outer surface (25).

17. A tunnel lining element (10) having at least two tunnel lining segments (11) comprising a body (20), The tunnel lining segments (11) have two short side faces (17) facing each other, On these short side faces, at least two of the tunnel lining segments (11) are connected to each other, and thus the tunnel lining element (10) is a closed element. In the above tunnel lining segments, On the first of the short side faces of the tunnel lining segment (11), at least one first connecting element (13) is arranged, and On the first of the short side faces of the tunnel lining segment (11), at least one second connecting element (14) is arranged, The connecting elements (13, 14) of the two tunnel lining segments (11) form a connection part (15) within the connection part (12), The connecting elements (13, 14) each have at least one base body (30, 40), and The connection part is a connection part in an engaged state by material. A tunnel lining element (10) characterized by

18. The tunnel lining element according to claim 17, characterized in that the connecting part in the engaged state by the material is a welded or glued connecting part between the base bodies (30, 40).

19. For the manufacture of the connecting part in the engaged state by the material, the base bodies (30, 40) are at least partially connected by welding seams over the circumference, and / or The base bodies (30, 40) each have one outer surface (31, 41), and these outer surfaces are preferably connected to each other in a flush state by contact welding or an adhesive. The tunnel lining element according to claim 18, characterized by

20. The tunnel lining element according to any one of claims 1 to 19, characterized in that the base bodies (30, 40) are firmly connected to the body (20).

21. The tunnel lining element according to any one of claims 1 to 20, characterized in that the body (20) is made of reinforced concrete, especially polymer concrete, steel, composite material, GFK, or a synthetic substance.

22. The tunnel lining element (10) is ring-shaped, and the tunnel lining segment (11) has the shape of a circular segment. The tunnel lining element according to any one of claims 1 to 21, characterized by

23. The tunnel lining element according to any one of claims 1 to 22, characterized in that the connecting part (15) is configured to be watertight.

24. The watertightness between the base bodies (30, 40), or between one base body (30, 40) and one spacer (60, 61), The tunnel lining element according to claim 23, characterized in that it is provided by a sealing element, insertion and / or application of a sealing means, or a connection of an engagement state by a material.

25. For the transmission of shear stress, within the connection part (15), or in at least one of the connection elements (13, 14), preferably at least one protrusion in the form of a thrust protrusion, and On the opposite side, within the connection part (15), or in at least one further different connection element (13, 14), at least one recess. Provided for the manufacture of an engagement by shape, within the connection part (15), or between the connection elements (13, 14) of the tunnel lining segment (11). The tunnel lining element according to any one of claims 1 to 24, characterized in that.

26. A system for the construction of a borehole in soil, preferably basically horizontally, from a starting point to a target point along a tunneling line, the system comprising: An excavation device for dissociating the soil. At least one pressing station for the advancement of the excavation device at the starting point. Having a plurality of tunnel lining elements (10) arranged behind the excavation device and advanced in the soil by a press frame. In the above system having a device for supplying the tunnel lining element (10) to the press frame. The system is characterized in that the tunnel lining element (10) is the tunnel lining element (10) according to any one of claims 1 to 25.

27. The system according to claim 26, characterized in that a device for assembling the tunnel lining element (10) is provided.

28. A method for the construction of a borehole in the soil, preferably substantially horizontally, from a starting point to a target point along a boring line, In this method, behind the boring device, a continuous tunnel lining element (10) is arranged and advanced by a press frame, so that the boring device is advanced from the starting point by at least one pressing station, said tunnel lining element (10) is individually supplied to said press frame, In the above method, said tunnel lining element (10) is the tunnel lining element (10) according to any one of claims 1 to 25, and said tunnel lining element (10) is manufactured from individual tunnel lining segments (11) by manufacturing a connection between the connecting elements (13, 14) of said tunnel lining segments (11), characterized in that.

29. The method according to claim 28, characterized in that the construction in the region of the press frame is carried out by means of a device.

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