Patent EA-004007-B1 (EA)
Title: Method and device for correcting the position of a slab construction consisting of precast concrete slabs
Inventor: REICHEL DIETER
IPC: E01B29/04
Filed: 2001-08-18
Abstract: 1. A method for the positional correction of a slab construction of precast concrete slabs (1), especially for an existing carriageway for high speed vehicles, wherein the precast concrete slabs (1) possess spindles (7) and said slab construction is carried by an underconstruction of a hard curing undergrout (4) and a carrier layer (5) of an under base, therein characterized, in that, for the said positional correction of least one precast concrete slab (1), the said precast concrete slab (1) is at least partially separated from the understructure, in particular from the undergrout (4) and/or from the carrier layer (5) and in that during the separation the spindles (7) are removed from the site of the separating cut and in that after the separation, the spindles (7) are returned to support location and the precast concrete slab (1) is finely aligned by said spindles (7) and in that the precast concrete slab (1) is provided with a renewed pour of an undergrout (4). 2. A method according to Claim 1, characterized in that, the under support, particularly the undergrout (4), is at least partially separated. 3. A method according to one of the foregoing Claims, characterized in that the understructure, particularly the undergrout (4), is separated in the longitudinal and/or in the horizontal direction from the precast concrete slab (1). 4. A method according to one of the foregoing Claims, characterized in that undergrout (4) is essentially separated at or in proximity to the contacting surface of the precast concrete slab (1) and/or the carrying layer (5). 5. A method according to one of the foregoing Claims, characterized in that the understructure, in particular the undergrout (4), is separated over the complete breadth of the precast concrete slab (1). 6. A method according to one of the foregoing Claims characterized in that before the separation of the understructure, in particular, the undergrout (4), an opening is made in the understructure, in particular the undergrout (4) for the insertion of a separating means, in particular a saw blade. 7. A method according to one of the foregoing Claims characterized in that the separation line exhibits a length, which is unequal to the length of a precast concrete slab (1), and especially is not on the contact location where two precast concrete slabs (1) abut. 8. A method according to one of the foregoing Claims characterized in that on the precast concrete slab (1), filling openings (9) are opened or created and employed for the renewed underpouring. 9. A method according to one of the foregoing Claims characterized in that closed filling openings of the old undergrout (4), are opened and made use of for renewed under pouring. 10. A method according to one of the foregoing Claims characterized in that the precast concrete slab (1) is exactly aligned by especially mechanical or hydraulic lifting means, such as spindles or lifting cushions, these means being placed inside and/or outside the precast concrete slab (1). 11. A method according to one of the foregoing Claims characterized in that the precast concrete slab (1) is undergrouted with an especially rapid-cure bitumen cement mortar, a plastic, or a cement mortar. 12. A method according to one of the foregoing Claims characterized in that the understructure, especially the undergrout (4) is separated by a saw, in particular a cable saw (20), a chain saw, or blade saw. 13. A method according to one of the foregoing Claims characterized in that the understructure, especially the undergrout (4) is separated by an oxygen lance. 14. A method according to one of the foregoing Claims characterized in that the understructure, especially the undergrout (4) is separated by a high pressure water stream. 15. A method according to one of the foregoing Claims characterized in that the cut opening in the understructure is cleaned before the renewed pour of grout. 16. A method according to one of the foregoing Claims characterized in that for the more rapid binding of the undergrout (4), the pour location is heated. 17. A method according to one of the foregoing Claims characterized in that a complete precast concrete slab (1) can be removed from the slab construction and replaced by an exchange slab. 18. A device with a separation apparatus for the release of at least one part of a precast concrete slab (1) of an existing carriageway for rail guided, high speed, vehicles from its understructure, especially in the case of a positional correction according to one of the foregoing Claims 1-17 characterized in that the separating apparatus (20, 21) is placed on the precast concrete slab (1) which is to be loosened or on an adjacent following precast concrete slab (1). 19. A device with a separating apparatus for the loosening from its understructure of at least a part of a precast concrete slab (1) of an existing carriageway for rail guided high speed vehicles, especially in the case of a positional correction according to one of the foregoing Claims 1-17 characterized in that the separation device (20, 21) is placed on a guide structure independent of the precast concrete slab (1) to be loosened, in particular on an adjoining track. 20. A device according to Claims 18 or 19 characterized in that the separating device (20, 21) cuts through the understructure, especially the undergrout layer placed beneath the precast concrete slab (1). 21. A device according to one of Claims 18-20 characterized in that the precast concrete slabs (1) are bound together. 22. A device according to one of Claims 18-21 characterized in that characterized in that the separating apparatus (20) is placed on the rails (2) of a first or second precast concrete slab (1). 23. A device according to one of Claims 18-22 characterized in that characterized in that the separating apparatus (20) is part of an assembly (20, 21) and within the said assembly (20, 21) exercises a thrust in a longitudinal direction of the precast concrete slab (1). 24. A device according to one of Claims 18-23 characterized in that in accord with one of the foregoing Claims, therein characterized in that the separation apparatus (20) and/or the assemble (20, 21) is guided on the rails (2). 25. A device according to one of Claims 18-24 characterized in that characterized, in that the assembly (20, 21) is placed securely on the rails (2), in particular, is clamped thereon.