Protective element with drainage, for connecting to a concrete element of a tunnel extension

Abstract

The invention relates to a protective element for connecting to a concrete element of a tunnel extension, which has a protective section having a first side facing the concrete element (10), on which first side at least one connecting element (17) is provided for establishing a retaining connection of the protective section to the concrete element (10), wherein the protective section is made from at least one plastic material, characterized in that the protective section (20) has at least one drainage element (40) through which a fluid can pass from the first side of the protective section (20) to the opposite side of the protective section (20) facing away from the concrete element (10).

Claims

1. A protective element for connecting to a concrete element of a tunnel lining, comprising a protective section including at least one plastic material comprising; a first side facing the concrete element comprising at least one connecting element configured to establish a retentive connection of the protective section to the concrete element; at least one drainage element through which a liquid can pass from the first side of the protective section toward the opposite side of the protective section which faces away from the concrete element, and; at least one of a spring element or an elastic element for producing the prestress, wherein the drainage element comprises a closure element configured to close the drainage element with respect to the opposite side of the protective section, wherein the closure element is prestressed into the drainage element.

2. The protective element as claimed in claim 1, wherein the drainage element comprises a receptacle for the closure element.

3. The protective element as claimed in claim 1, wherein the protective element comprises at least one seal gas-tight and liquid-tight connected in one piece to the protective section.

4. A protective element for connecting to a concrete element of a tunnel lining, comprising a protective section including at least one plastic material comprising; a first side facing the concrete element comprising at least one connecting element configured to establish a retentive connection of the protective section to the concrete element; at least one drainage element through which a liquid can pass from the first side of the protective section toward the opposite side of the protective section which faces away from the concrete element; wherein the drainage element comprises at least one opening in the protective element, wherein the drainage element comprising a hollow body corresponding to the at least one opening, wherein the hollow body comprises at least one hollow body opening in a wall of the hollow body, through which the liquid can pass from the first side into the hollow body, wherein a closure body is disposed at least one of in or in front of the at least one hollow body opening.

5. The protective element as claimed in claim 4, wherein the one hollow body is at least one of a sleeve or an erector dowel.

6. The protective element as claimed in claim 4, wherein the protective element comprises at least one seal gas-tight and liquid-tight connected in one piece to the protective section.

7. A concrete element of a tunnel lining having a convex outer surface and an opposite inner surface, comprising a protective element connected to the concrete element via at least one connecting element to the inner surface of the concrete element, comprising a protective section including at least one plastic material comprising; a first side facing the concrete element comprising at least one connecting element configured to establish a retentive connection of the protective section to the concrete element; at least one drainage element through which a liquid can pass from the first side of the protective section toward the opposite side of the protective section which faces away from the concrete element.

8. The concrete element as claimed in claim 7 wherein the drainage element comprises a closure element configured to close the drainage element with respect to the opposite side of the protective section.

9. The concrete element as claimed in claim 8, wherein the drainage element comprises a receptacle for the closure element.

10. The concrete element as claimed in claim 8, wherein the closure element is prestressed into the drainage element.

11. The concrete element as claimed in claim 7, wherein the drainage element comprises at least one opening in the protective element.

12. The concrete element as claimed in claim 11, wherein the drainage element comprises a hollow body corresponding to the at least one opening.

13. The concrete element as claimed in claim 12, wherein the one hollow body is at least one of a sleeve or an erector dowel.

14. The concrete element as claimed in claim 11, wherein the at least one opening is normally closed and is configured to open when a limit pressure is exceeded.

15. The concrete element as claimed in claim 7, comprising at least one hollow body opening in a wall of the hollow body, through which the liquid can pass from the first side into the hollow body.

16. The concrete element as claimed in claim 15, comprising a closure body at least one of in or in front of the at least one hollow body opening.

17. The concrete element as claimed in claim 15, wherein the hollow body opening is configured to open when a limit pressure is exceeded.

18. The protective element as claimed in claim 17, wherein the protective element comprises at least one seal gas-tight and liquid-tight connected in one piece to the protective section.

19. The concrete element as claimed in claim 7, wherein the protective section comprises at least one of at least one bottom section or has at least one bottom section and at least one wall section.

20. The concrete element as claimed in claim 19, wherein the at least one drainage element is disposed on at least one of on the at least one bottom section or on the at least one wall section.

21. The concrete element as claimed in claim 7, wherein the protective element comprises at least one seal gas-tight and liquid-tight connected in one piece to the protective section.

22. A protective element for connecting to a concrete element of a tunnel lining, comprising a protective section including at least one plastic material comprising; a first side facing the concrete element comprising at least one connecting element configured to establish a retentive connection of the protective section to the concrete element; at least one drainage element through which a liquid can pass from the first side of the protective section toward the opposite side of the protective section which faces away from the concrete element; wherein the drainage element comprises at least one opening in the protective element, wherein the drainage element comprising a hollow body corresponding to the at least one opening, wherein the hollow body comprises at least one hollow body opening in a wall of the hollow body, through which the liquid can pass from the first side into the hollow body, wherein the hollow body opening is configured to open when a limit pressure is exceeded.

23. The protective element as claimed in claim 22, wherein the one hollow body is at least one of a sleeve or an erector dowel.

Description

(1) In the following text, the invention will be described in greater detail using drawings, in which:

(2) FIG. 1 shows a three-dimensional illustration of a concrete element according to the invention having a protective element according to the invention,

(3) FIG. 2 shows a sectional view with respect to the protective element according to FIG. 1,

(4) FIGS. 3a-3d show outline sketches in sectional views of alternative embodiments with respect to FIG. 2,

(5) FIG. 4 shows a detail in a sectional view of a protective element according to the invention of a first embodiment of a drainage element,

(6) FIG. 5 shows a detail in a sectional view of a protective element according to the invention of a second embodiment of a drainage element,

(7) FIG. 6a shows a detail in a sectional view of a protective element according to the invention of a third embodiment of a drainage element,

(8) FIG. 6b shows a side view of constituent parts of the drainage element with respect to FIG. 6a,

(9) FIG. 6c shows a plan view with respect to FIG. 6b,

(10) FIG. 6d shows a partially sectioned side view of the drainage element with respect to FIG. 6a in the mounted state,

(11) FIG. 6e shows a partially sectioned side view of the drainage element with respect to FIG. 6a in the triggered state,

(12) FIG. 7a shows a detail in a sectional view of a protective element according to the invention of a fourth embodiment of a drainage element,

(13) FIG. 7b shows an enlarged sectional view with respect to FIG. 7a, and

(14) FIG. 8 shows a detail in a sectional view of a protective element according to the invention of a fifth embodiment of a drainage element.

(15) A concrete element 10 according to the invention (FIG. 1) is a segment section (segment) of a tunnel lining. The segment section has a convex top side 11 and a bottom side 12 which is arranged so as to lie opposite said top side 11 (concealed by way of a protective element 20 in FIG. 1). The protective element 20 is arranged on the inner side 12 of the concrete element. In this embodiment, the protective element 20 has a bottom section 21 and wall sections 22, 23. A receiving region 29 is provided on said wall sections 22, 23, in which receiving region 29 a seal 30 is arranged. The connection between the seal 30 and the protective element 20 takes place, for example, by way of injection molding.

(16) As an alternative, the concrete element can also have only a protective element 20 with a bottom section 21 (not shown). A seal 30 can be provided but does not have to be provided. If no seal is provided, the joints between the individual protective elements 20 of the concrete elements 10 are welded to one another.

(17) As shown in FIG. 2, the protective element 20 has a bottom section 21, on the outer sides of which wall sections 22, 23 are arranged substantially at right angles, but also in any other desired arrangement. In order to produce a retentive connection between the protective element 20 and the concrete element 10, the inner side of the bottom section 21 has pin elements 17. As an alternative (and not shown), webs can also be arranged parallel to the one outer wall and webs can be arranged with respect to the outer wall which is arranged at a right angle with respect to said outer wall. The webs can be provided, for example, with openings, through which concrete 16 can pass, the concrete therefore producing a particularly satisfactorily retentive connection after hardening.

(18) The seal 30 is arranged in a receiving region 29. The seal 30 consists of an elastic plastic. The seal 30 has a sealing face 31 which comes into contact either with another concrete face or another sealing face 31 of a seal 30 during assembly of the individual concrete elements. The seal 30 has chambers 32 in the interior. During the assembly of the concrete elements 10, the elastic plastic of the seal 30 is deformed, and the chambers 32 are compressed. Holding projections 33 which engage into the plastic of the side wall 22, 23 of the protective element 20 are arranged so as to lie opposite the sealing face 31. Said holding projections 33 and the side walls of the seal 30 which lie close to them are connected during injection molding with the plastic of the protective element and/or are enclosed in a gas-tight manner by said plastic.

(19) A protective element 20, as shown in FIG. 2, can be produced, for example, by way of injection molding. Alternative embodiments are shown in FIGS. 3a to 3d.

(20) FIGS. 3a to 3d show alternative embodiments of the protective element 20 with regard to the fact that the protective element 20 or the bottom section and/or the wall section are produced at least partially a second section 28 from prefabricated semifinished products such as webs with projections arranged on them. Here, FIGS. 3a to 3d show different exemplary types of connection of the second section 28 to a first section 25 which has been produced, for example, using the injection molding method. This connection can take place in the manner of a butt joint (FIGS. 3a, 3d and 3c), or the second section 28 is engaged around by the first section 25 on one side (not shown) or on both sides (FIG. 3d). In FIG. 3b, the flat element which forms the second section 28 is provided not only as a constituent part of the bottom section 21, but rather also as a wall section 22, 23. The connection in the manner of a butt joint (as shown in FIGS. 3a, 3d and 3c) has surprisingly proven sufficient, in particular in the case of the connection of PE as a flat element and pDCPD as an injection moldable plastic of the first section 25. It is also possible, depending on the requirement made of the protective element, to provide a plurality of flat sections which are possibly made from different materials, which flat sections are then connected to one another via a plurality of first sections 25, via the injection moldable plastic or plurality of different injection moldable plastics. This applies to the bottom section 21, the wall section 22, 23, and also to the roof sections.

(21) FIG. 1 diagrammatically shows a drainage element 40 which is shown in the form of an opening 41 in the protective element 20 in the bottom section 21. As shown diagrammatically in FIGS. 2 to 3d, the drainage element 40 has a hollow body 42 which corresponds with the opening 41 at its lower end 43.

(22) Embodiments of the drainage element are shown in FIG. 4 to FIG. 6e.

(23) Here, FIG. 4 shows the opening 41 in the protective element 20. A hollow body 42 is arranged on the protective element 20, which hollow body 42 is attached fixedly (in one piece) to the bottom section 21 via a welded seam 43. The hollow body 42 has an interior space 44 which is defined by way of the wall 45 and a cover element 46. The hollow body 42 can be, for example, an erector dowel, via which handling of the concrete element takes place during installation on site in the tunnel. The wall 45 has a depression 47 which is arranged on the inner wall 48. Hollow body bores 50 are provided in said depression, via which hollow body bores 50 the groundwater passes from the inner side A of the protective element 20 into the interior space 44 of the hollow body 42. From here, it then passes through the opening 41 to the outer side B of the protective element 20. Closure elements 49 are provided in the hollow body bores 50. These can be, for example, elements which are provided movably in the bore 50 and which provide a resistance to the groundwater, however, on account of the friction between the closure element 49 and the bore 50, and are moved out of the bore 50 into the interior space 44 by way of the groundwater only after a limit pressure is reached. As an alternative, the closure element 49 can be connected in one piece to the bore 50, the connection then fracturing if the limit pressure is exceeded.

(24) FIG. 5 shows the opening 41 in the protective element 20. A hollow body 42 is arranged in a corresponding manner on the protective element 20. This can once again be an erector dowel. A connector element 51 with an internal thread section 52 is provided on the protective element 20. The connection of the connector element 51 to the protective element 20 or else of the hollow body 42 to the protective element 20 can take place in the case of a drainage element 40, for example, via welding or adhesive bonding. It is also possible to provide the hollow body 42 in one piece and integrally with the protective element, by the hollow body 42 being produced directly together with the protective element, for example by way of injection molding. In FIG. 5, on its outer wall 53, the hollow body 42 has an external thread section 54 which corresponds to the internal thread section 52. The hollow body 42 is then screwed with its external thread section 54 into the internal thread section 52 of the connector element 51.

(25) A depression 55 which is, for example, of circumferential configuration here is provided on the inner wall 48. A further possible embodiment would be that the depression 55 is provided only in sections on the inner wall 48. The depression 55 serves for receiving at least one section 56 of the closure element 49 in a retentive manner. Here, the closure element 49 is of cover-shaped configuration with a cavity 57. It has a bottom section 58 and a wall 59. An embodiment as a solid body is likewise possible, for example. Via the section 56, the closure element 49 is arranged in the interior space 44 of the hollow body 42 in the depression 55 in such a way that the opening 41 is closed. The closure element 49 is clamped in the depression 55 via the section 56. As an alternative, the closure element can also be screwed via a thread into the opening 41 or into the hollow body 42 or into the openings 50. After a limit pressure is exceeded, the groundwater presses the closure element 49 out of the hollow body 42 or out of the opening 41, with the result that the groundwater can pass to the interior space. The closure element 49 is detached from the drainage element 40 and in the process passes into the tunnel.

(26) FIGS. 6a to 6e show a further embodiment of a drainage element 40. Here, the opening 41 is once again arranged in the protective element 20. A hollow body 42 is arranged on the protective element in a corresponding manner. This can once again be an erector dowel. A depression 55 which is, for example, of circumferential configuration here is provided on the inner wall 48. Furthermore, a depression 47 is provided with the hollow body bores 50. FIG. 6a shows a closure element 60, for example in the form of an O-ring, in the depression 47, which closure element 60 closes the bores 50. The closure can be appropriate, for example, during the connection of the protective element 20 to the concrete 16 during the production of the concrete element 10, in order that no concrete passes into the drainage element 40.

(27) FIG. 6b and FIG. 6c show one embodiment of the closure element 50. The closure element 60 has a closure section 61 which is connected to an abutment element 62. Here, the abutment element 62 has a rod section 63 which is provided such that it can be moved and displaced with the closure section 61. Here, a blind bore 64 is provided in the closure section, into which blind bore 64 the rod section engages. A rest face 65 is provided in each case on the blind bore or else on the closure section 61 on the one side and on the abutment element 62, on and between which rest faces 65 a spring element 66 is arranged in a prestressed manner, said spring element 66 being arranged around the rod section 6 here. It is advantageous here if the spring element 66 pulls the closure section 61 and the abutment element 62 toward one another, with the result that the groundwater which acts on the closure section 61 has to move the latter away from the abutment element 62. FIG. 6c shows a plan view of the abutment element 62 which has a circumferential outer section 67, on which connecting sections 68 for the rod section 63 are provided. Openings 69 are provided between the outer section 67, the connecting sections 68 and the rod section 63, through which openings 69 the groundwater can pass.

(28) Furthermore, a depression 70 is provided circumferentially for receiving the abutment element 62 in the inner wall 48.

(29) FIG. 6d shows how the closure element 50 is arranged in the drainage element 40. Here, the abutment element 62 is arranged in the depression 70. Furthermore, the closure section 61 is arranged via sections 56 in the depression 55. At the same time, the spring element 66 pulls the closure section 61 and the abutment element 62 toward one another, and therefore prestresses the closure element 61. The O-ring 60 is removed from the hollow body 42 from the depression 47, and the hollow body bores 42 are free.

(30) FIG. 6e shows the triggered or open state of the drainage element 40. The closure element 61 has been released from the depression 55, and has been moved out of the hollow body 42 and through the opening 41 counter to the spring force of the spring element, by way of the groundwater. The opening 41 is released, and the groundwater can flow from the inner side A to the outer side B. The closure element 61 is held by way of the spring element 66, however, and does not fall into the tunnel. During an inspection of the tunnel, after the groundwater pressure has receded, the closure element 61 can then be pressed into the drainage element 40 again, until the section 56 of the closure element 61 engages into the depression 55 again, with the result that the drainage element 40 can be transferred again from an open state into a closed state.

(31) A further embodiment according to the invention is shown in FIGS. 7a and 7b. The opening 41 is once again provided in the protective element 20, on which opening 41 a drainage element 40 is provided. A hollow body 42 is arranged on the protective element 20 in a corresponding manner, which hollow body 42 is a connector element 51 with an internal thread section 52 here. The connection of the connector element 51 to the protective element 20 can take place, for example, via welding or adhesive bonding in the case of a drainage element 40 of this type. It is also possible to provide the hollow body 42 in one piece and integrally with the protective element, by the hollow body 42 being produced directly together with the protective element, for example by way of injection molding.

(32) In FIG. 7a, a further hollow body 42, for example once again an erector dowel or a closure screw, is introduced into the internal thread section 52 of the connector element 51 by way of an external thread section 54 which is attached on its outer wall 53 and corresponds to the internal thread section 52. I

(33) The at least one opening 50 is provided in the connector element 51 here. Furthermore, a sealing element 71, for example in the form of a rubber element, is provided which closes the at least one opening 50. Here, the sealing element 71 can be arranged on the hollow body 42, for example by way of adhesive bonding or the like, or is provided on the connector element 51, as shown in FIG. 7. Here, it can also be connected to the connector element 51 by way of adhesive bonding or the like, or it has a connector element 72 which can enter into a retentive connection with the connector element 51. FIG. 7a shows the sealing element with a connector element 72 which projects at a right angle and, in the mounted state, protrudes into a depression 73 in the connector element 51 and, as a result, arranges the sealing element 71 on the connector element 51.

(34) A spacing 74 which can be utilized in a channel-like manner for dewatering purposes is situated between the connector element 51 and the hollow body 42. The spacing is closed by way of the sealing element 71 in the region of the at least one opening 50. A further sealing element 75 is provided above it, for example in the form of an O-ring here, by way of which further sealing element 75 a permanent seal of the spacing 74 between the connector element 51 and the hollow body 42 is achieved, in order to prevent an uncontrolled exit of gases or liquids here.

(35) The prevailing liquid passes through the at least one opening 50 counter to the sealing element 71. The latter is prestressed as it were as a result of its material property. If the pressure becomes greater than the abutment force/spring force of the sealing element 71, the sealing element 71 is deformed and is released from the inner wall 48 (FIG. 7b), with the result that a gap D is formed which opens into the channel-like spacing 74. The liquid can then flow out into the interior space in the end direction C through the gap D and the spacing 74.

(36) If the pressure of the prevailing liquid decreases, the sealing element 71 expands again and bears against the inner wall 48 again, with the result that the gap D closes again and the sealing element is closed again in a gas-tight and liquid-tight manner.

(37) A further embodiment according to the invention is shown in FIG. 8. The opening 41 is once again provided in the protective element 20, on which opening 41 a drainage element 40 is provided. A hollow body 42 is arranged on the protective element 20 in a corresponding manner, which hollow body 42 can be a sleeve or a connector element 51. The hollow body 42 has at least one opening 50 in the wall 45 in the interior space 44, for the passage of the prevailing liquid, and a depression 76. An elastic sealing element 71 is provided in the interior space 44 and, in particular, in the depression 76. Furthermore, the sealing element 71 is configured in such a way that it covers and therefore closes the at least one opening 50.

(38) A closure element 49 is provided in a retentive manner in the sealing element 71, preferably in conjunction with the depression. Here, said closure element 49 has by way of example projections 77 which engage into the depression and therefore hold the closure element in the hollow body 42. Dewatering takes place as described above. The prevailing liquid passes through the at least one opening 50 counter to the sealing element 71. The latter is prestressed as it were as a result of its material property. If the pressure becomes greater than the abutment force/spring force of the sealing element 71, the sealing element 71 is deformed and is released from the inner wall 48 (FIG. 7b), with the result that a gap D is formed which opens into the channel-like spacing 74. The liquid can then flow out into the interior space in the end direction C through the gap D and the spacing 74. If the pressure of the prevailing liquid decreases, the sealing element 71 expands again and bears against the inner wall 48 again, with the result that the gap D closes again and the sealing element is closed again in a gas-tight and liquid-tight manner.

(39) In addition, the closure element is pressed downward toward the interior space in the arrow direction E. As a result, an additional sealing action is brought about within the depression in the region of the horizontal sections 78 of the depression 76. If the liquid in the concrete element 10 increases further and the pressure increases further beyond a magnitude, such that the prevailing liquid cannot be discharged via the opening 50, then the closure element 49 can be pressed out of the sealing element 71 and the depression 76 and then out of the hollow body 42 into the interior space in the arrow direction E, in order to make a more pronounced liquid exit possible and in order to prevent damage of the protective element 20.

LIST OF DESIGNATIONS

(40) TABLE-US-00001 10 Concrete element 54 External thread section 11 Top side 55 Depression 12 Bottom side 56 Section 16 Concrete 57 Cavity 17 Pin element 58 Bottom section 20 Protective element 59 Wall 21 Bottom section 60 Closure element 22 Wall section 61 Closure section 23 Wall section 62 Abutment 25 Section 63 Rod section 28 Section 64 Blind bore 29 Receiving region 65 Rest face 30 Seal 66 Spring element 31 Sealing face 67 Outer section 32 Chamber 68 Connecting section 40 Drainage element 69 Opening 41 Opening 70 Depression 42 Hollow body 71 Sealing element 42 Hollow body 72 Connector element 43 Lower end 73 Depression 43 Welded seam 74 Spacing 44 Interior space 75 Sealing element 45 Wall 76 Depression 46 Cover element 77 Projection 47 Depression 78 Horizontal section 48 Inner wall A Inner side 49 Closure element B Outer side 50 Hollow body bore C Outflow direction 51 Connector elements D Gap 52 Internal thread section E Outflow direction 53 Outer wall