Inliner lining element

Abstract

The invention relates to an inliner lining element (100) with a hollow cylindrical design for a new construction of shafts made of shaft rings equipped with such inliner lining elements or for masonry shafts (6) requiring renovation or shafts made of shaft rings, said inliner lining element being designed in particular for backfilling with a hardening and setting binder compound (5), preferably a flowable binder compound which can be delivered by a pump, and being made of at least two, in particular three or more, stackable lining panel rings (120) made of lining panels (110), preferably lining panels in the shape of cylinder jacket sections, which laterally adjoin one another on both sides and each of which has edge reinforcement ribs (11, 12; 13, 14) that protrude radially outwards and casing reinforcement ribs (15, 16) that run between same and intersect each other, preferably in a perpendicular manner, wherein - both the two lateral manufacturing edge reinforcement ribs (13, 14) of each of the lining panels (110, 110 / 1, 110 / 2) as well as the upper and lower circumferential edge reinforcement ribs (11, 12) thereof, and thus each of the lining panel rings (120) made of the lining panels, are formed, in an alternating manner per lining panel (101), as profiled sections with continuously recessed profiled channels (131) and as profiled sections with continuously extending profiled noses (141), and - the profiled channels (131) and profiled noses (141) thereof can be moved linearly into each other and have respective cross-sections that cooperate in a form-fitting manner without an undercut, are adapted for a close fit in each other, and have substantially the same shapes and sizes, which are adapted for a form-fitting close fit in each other, - whereby both the lining panels (110) as well as the lining panel rings (120) made thereof can be connected together in a locked manner or in a forced manner via toothing elements (131, 141; 111, 121) which prevent joint-connection gaps or points, whereby a tight welding can be achieved horizontally and vertically and a tight closure can be achieved upon introducing a concrete backfilling.

Description

[0001] Inliner lining body

[0002] Liners, i.e., lining bodies, are commonly used for lining vertical shafts for sewer systems for a wide variety of purposes, particularly using rotational molding, deep-drawing, or injection-molded techniques. These are typically accessible from above via a manhole with a downwardly extending manhole or chamber. The strength of such shafts is ensured, in particular, by concrete rings, which are monolithically connected to the lining bodies by being cast in concrete.

[0003] The lined concrete bodies, which can be stacked on top of each other to form the shaft structure, have a lining body formed on the inside with lining body rings, which thus protects the inside in particular against the ingress and influence of corrosion and represents the ultimate quality standard for corrosion protection.

[0004] This well-known lining provides long-term protection for concrete shafts, particularly against the effects of biogenic sulfuric acid corrosion (BKS).

[0005] Stackable concrete rings are known for the construction of new shafts, whose plastic lining is monolithically bonded to the concrete and which are described in more detail in the brochures "SEAL-PLATE" or "SEALPLATE" from "GU-Liner Systems".

[0006] WO 2005080692 A1 discloses a cylindrical or truncated cone-shaped ring element or liner for constructing a sewer or pipe shaft. The ring element is formed from several abutting ring segments. Longitudinal ribs aligned parallel to the generatrices and transverse ribs crossing these are provided on the outer surface of the ring element.

[0007] A ring element for constructing a shaft, analogous to WO 2005080692 A1 and formed from several ring segments, is also known from WO 2021044255. However, this ring element does not have longitudinal and transverse ribs, but only flanges at the ends of the ring segments where they abut one another.

[0008] WO 2004261343 A1 and WO 2007000184 A1 show a ring element constructed from ring segments for creating a shaft structure. The ring segments are equipped with a groove at one end and a tongue at the other, so that the individual ring segments can be connected to form a ring element by inserting the tongue into the groove. Longitudinal ribs and locking elements on circumferential edge stiffening ribs are not shown there.

[0009] In further development, a shaft rehabilitation or refurbishment process has been developed for the refurbishment of old existing shafts.

[0010] In this process, the hollow cylindrical lining body is assembled from individual plates made of PE or PP that are joined to form lining rings and bent in the shape of a cylinder shell. This hollow cylindrical lining body is then inserted into the shaft that requires rehabilitation or is installed directly in the shaft, after which the space between the inner wall of the shaft and the outer wall of the lining body is filled with a hydraulic binding mass, usually concrete.

[0011] The wall thickness of the lining body shell for the renovation is advantageously greater than that of the known monolithic lining concrete manhole rings, for example, it is 6 to 8 instead of 2 to 3 mm, which means that a support formwork using steel cylinders or support cylinders made of steel, wood or plastic is not necessary, which enables rapid installation in a sewer shaft.

[0012] The joining areas of the individual lining panels and the lining panel rings formed with them pose problems both during the construction of the lined concrete rings and during shaft rehabilitation. This is because the viscous binder mass must be pumpable and flowable, or even dough-like, to ensure complete, seamless backfilling of the lining body with binder mass. Above all, to permanently protect the concrete ring or the binder mass against corrosive attack or the effects of biogenic sulfuric acid corrosion (BKS) by sealing all joints. Welding of the individual elements of the lining body is planned to achieve its tightness.

[0013] With regard to the individual known lining body, which is composed of the same polymer elements as are present in the concrete shaft rings formed monolithically with them, it should be explained in more detail that it is formed with curved lining plates joined to one another on both sides and joined to one another by stacking or overlapping one another.

[0014] Each of the lining panels is formed with edge stiffening ribs on all its edges and are connected to each other by means of "vertical" generatrix and "horizontal" circumferential shell stiffening ribs, which cross each other parallel to the edge stiffening ribs.

[0015] These ribs protrude radially outwards from the cylinder surface and usually have the same, approximately rectangular, basic cross-section.

[0016] The object of the present invention is to design the lateral joining areas of the individual lining panels joined together to form the lining panel rings and the upper and lower abutment areas of the lining panel rings formed with the same and to be stacked on top of each other in such a way that the assembly can be carried out in a displacement-proof manner by the "interlocking" or "locking" and thus achieve simple welding horizontally and vertically and, during renovation, a tight seal is then obtained when the concrete backfill is introduced.

[0017] The invention therefore relates, on the one hand, to the construction of new shafts made of concrete rings, the insides of which are already equipped with a concrete-encased plastic lining, and, on the other hand, to the renovation of existing shafts of this type in need of renovation by installing independent lining bodies made of lining rings.

[0018] The subject matter of the invention are both lining bodies formed with lining rings for the new construction of shafts from shaft rings equipped with such lining rings and such lining bodies for the renovation of existing shafts made of concrete or masonry that are in need of renovation, which are formed with at least two, in particular three or more, cylindrical shell sector-shaped curved lining plates that border one another on both sides, each of which has radially outwardly projecting edge stiffening ribs and between them running shell stiffening ribs that cross one another at right angles and which are joined together to form stackable lining plate rings.

[0019] The lining bodies according to the invention are characterized in that - both the two lateral generatrix edge stiffening ribs of each of the lining plates as well as the upper and lower circumferential edge stiffening ribs of the same and thus also each of the lining plate rings formed with them are designed alternately per lining plate as profiles with continuously recessed profile grooves and as such with continuously extending profile noses,

[0020] - that the profile grooves and profile noses of the same can be pushed into one another linearly and without undercuts, cooperating in a form-fitting manner, fitting snugly into one another, each having cross-sections of identical sizes and shapes,

[0021] - whereby both the lining panels and the lining panel rings formed with them can be connected or locked to one another via the interlocking elements which prevent joint gaps or points, whereby a tight welding can be achieved horizontally and vertically and, when a concrete backfill is introduced, a tight seal can be achieved.

[0022] In the lining body according to the invention, it has proven advantageous to ensure that the profile grooves and profile noses of the generatrix edge stiffening ribs of the lining plates forming the toothing elements, on the one hand, and the profile grooves and profile noses of the individual upper and lower circumferential edge stiffening ribs forming the toothing elements, as well as the lining plate rings formed with the lining plates, on the other hand, have cross-sectional areas of the same size and / or shape.

[0023] In this case, it is particularly advantageous in terms of manufacturing, installation and sealing technology if the profile grooves and profile noses of the stiffening ribs have a triangular cross-section with a "vertical" steep wall that parallels the direction of sliding and stacking and a sloping wall that intersects the same at a sharp, possibly rounded, angle.

[0024] Another, similar solution consists in the profile grooves and profile noses of the circumferential and generatrix edge stiffening ribs being designed with a triangular cross-section with two inclined walls having the same or different slopes and intersecting each other at an angle.

[0025] Furthermore, with regard to mechanical impairment of the interlocking elements during assembly of the lining supports according to the invention, it is advantageous to ensure that the profile noses and profile grooves of all edge stiffening ribs are shifted or offset from their free ends inward toward the lining panels, i.e., spaced from the free ends. This achieves a fully secure locking mechanism during assembly.

[0026] Furthermore, it is advantageous, particularly for a simplified assembly of the lining bodies according to the invention, if the profiles of the underside and the upper side circumferential edge stiffening ribs have profile noses and profile grooves with rectangular, square or trapezoidal cross-sections that fit together in a form-fitting manner as interlocking elements.

[0027] A further essential part of the present invention is a method for the renovation and rehabilitation of old, possibly dilapidated, or at risk of collapse shafts, which is characterized in that inside or outside the shaft a) the lining plates are joined together to form lining plate rings via the interlocking elements of profile grooves and profile noses of their generatrix edge stiffening ribs, that b) at least two of the lining plate rings formed according to a) are stacked on top of each other via the interlocking elements of profile grooves and profile noses of their upper and lower circumferential edge stiffening ribs c) are joined to form a lining body, d) which, in the case of the formation of the lining body outside the shaft e), is introduced into the shaft requiring renovation,f) after which the individual parts are welded tightly along the gap between the plates and the plate rings, and g) in the annular space between the outer surface of the wall of the lining body formed according to a) to d) and the inner wall of the respective shaft requiring rehabilitation, a setting binder mass, preferably mortar or concrete, is either manually installed or pumped in and, after compaction, allowed to set and harden.

[0028] According to the invention, a shaft is further obtainable or formed from a number of lining bodies according to the invention.

[0029] An exemplary and non-limiting embodiment of the invention is explained in more detail with reference to the drawing: Fig. 1 shows the known, basic structure of a shaft lining body in the form of a cylinder shell, Fig. 2a is a plan view of a 120° cylinder ring sectoral lining plate together with parts of the similar lining plates laterally adjoining it on both sides, which together form a lining plate ring, Figs. 2b and 2d are sectional views of the outwardly directed cylinder generating line edge stiffening ribs on both sides at the joining points of the three lining plates, Fig. 2c is a cross-sectional view of a generating line shell stiffening rib, Figs. 3 and 3a are side and section views of the lining plate just described, Figs. 3d and 3e are sectional views of the upper and lower circumferential edge stiffening ribs of the lining plate, Fig.3c and 3b show a single and a double circumferential shell stiffening rib of the reinforcement rib system, and Fig. 4 shows sectional views of the upper and lower edge stiffening ribs of two lining panels that can be joined and interlocked. Furthermore, Figs. 5a and 5b show sectional views through a lower and upper edge stiffening lip, and Fig. 6 shows a sectional view of the process of sliding two lining panels together during assembly of the new lining body.

[0030] The schematically drawn shaft lining body 100 of Fig. 1 has a cylindrical shell shape, it is formed with stacked lining plate rings 120, which in turn are formed with laterally joined lining plates 110,110 / 1,1 10 / 2.

[0031] The "vertical" edges of the lining plates 110, 110 / 1, 110 / 2, which are laterally adjacent to one another on both sides, follow the generatrices of the cylindrical lining body 100 and are designed as generatrice edge stiffening ribs 13, 14.

[0032] The horizontal edges of the lining plates 110 joined together to form lining plate rings 120 are designed as circumferential edge stiffening ribs 11, 12.

[0033] Also indicated in Fig. 1 is a part of a shaft 6 to be renovated and the intermediate space 5 between the inner wall of the shaft 6 and the casing of the lining body 100, which is to be filled with setting and hardening binder, as well as the intersecting casing reinforcing ribs 15 and 16 between the circumferential edge stiffening ribs 11, 12 and generatrix edge stiffening ribs 13, 14. The plan view of a part of the cylindrical lining body 100 of Fig. 2a shows three laterally adjacent lining plates 110, 110 / 1, 110 / 2, which together form the lining plate ring 120, with the respective lateral generatrix edge stiffening ribs 13, 14 and the jacket stiffening ribs 15 running between them along the generatrix, which all project radially outwards from the cylindrical jacket of the lining body 100, as well as one of the horizontal jacket reinforcing ribs 16.

[0034] Essential to the invention is the inventive and effective design of the generatrix edge reinforcement ribs 13, 14 of laterally adjacent lining panels 110, 110 / 1, 110 / 2, as shown in Figs. 2b and 2d:

[0035] Each of the lining panels 1 10, 110 / 1 , 1 10 / 2 shown here has two lateral generatrix edge stiffening ribs 13, 14, which are formed with different, form-fitting profile cross-sections.

[0036] The edge stiffening rib 13 is formed with a continuously recessed profile groove of triangular cross-section 131, arranged here directly at the free end of the rib 13.

[0037] The rib 14 is formed with a continuous protruding profile nose 141, also of triangular cross-section, here also arranged at the free end of the rib 14.

[0038] The cross sections of the profile groove 131 and the profile nose 141 have practically the same size and shape and form the inventive form-fitting linearly interlocking and matching toothing elements of the edge reinforcement ribs 13, 14.

[0039] This is clearly evident from Fig. 2a and 2c, which illustrate in detail the assembly of the lining plates 110, 110 / 1, 110 / 2 to form the lining plate ring 120, where it is shown, on the one hand, how the profile groove 131 of the generatrix edge rib 13 of the left adjacent lining plate 110 / 1 can be pushed in a form-fitting manner onto the profile nose 141 of the left generatrix edge rib 14 of the lining plate 110, and on the other hand, how the profile nose 141 of the lining plate 110 / 2 can be pushed in a form-fitting manner into the profile groove 131 of the lining plate 110.

[0040] Arrows indicate the direction in which the lining plates are pushed together when joining them to form the lining plate rings. Figure 2c shows a section through a section of a lining plate 110 with a vertical shell stiffening rib 15.

[0041] Figures 2a to 2d show that all stiffening ribs are not entirely rectangular, but rather have a smaltrapezoidal cross-section, tapering slightly toward the free ends. This is particularly important for formwork removal.

[0042] Fig. 3a shows a side view of a leveled lining plate 110 of a lining plate ring 120 with its edge stiffening ribs 13, 14;11,12 on both sides as well as on the top and bottom sides.

[0043] The shell stiffening ribs 15 and 16 as well as the two double stiffening ribs 161, 162 are directly connected to the edge stiffening ribs 13, 14; 11, 12, cross each other at right angles and form a shell stiffening network.

[0044] Fig. 3 shows the lining plate 110 of Fig. 3a in cross section with the jacket reinforcing ribs 16, 161, 162 and 15.

[0045] Fig. 3 b and 3c show a double stiffening rib 161, 162 for the lower part of the new lining body 100 and one of the other stiffening ribs 16, each in section.

[0046] Fig. 3e shows a top-side circumferential edge stiffening rib 11 of a lining panel 110 in cross-section with upwardly pointing continuous profile groove 111, Fig. 3d shows the underside circumferential edge stiffening rib 12 of the same panel with downwardly pointing continuous profile nose 121, which have the same size and shape as those 131, 141 of the generatrix edge stiffening ribs 13, 14.

[0047] It is not shown in detail here that the profile groove 11 1 of the upper-side circumferential edge stiffening rib 11 of the lining plate 10 of a lining plate ring 120 cooperates in a form-fitting manner with the lower-side circumferential edge stiffening rib of the lining plate of a lining plate of a lining plate ring to be positioned above, and vice versa.

[0048] Fig. 4 shows a partial plan view of a lining plate ring 120, as essentially shown in Fig. 2. There, the two toothing elements are each displaced or offset from the free ends of the generatrix edge stiffening ribs 13, 14 inwards, i.e., toward the lining body cylinder shell.

[0049] This significantly reduces the risk of damage to the toothing elements 131, 141 when joining the lining plates 110, 110 / 2 during the construction of the lining bodies 100.

[0050] Figs. 5a and 5b show a known underside edge stiffening rib 12 and an upper side such rib 11 of a lining plate 110, each in section.

[0051] There, a profile nose 121 and a profile groove 111 with its form-fitting connection are shown, each of which has rectangular cross-sections that fit one into the other in a form-fitting manner, which in particular facilitates the stacking of the lining plate rings 120.

[0052] Here, too, it is shown that the two toothing elements 111, 112 are arranged offset from the free ends of the reinforcing ribs 11, 12 towards the lining body cylinder, i.e., towards the "inside", which significantly reduces the risk of damage during the construction of the lining body 100.

[0053] Fig. 6 illustrates, by means of a sectional view, the sliding together of two lining panels 110, 110 / 2 to be connected to each other, indicated by two arrows.

[0054] Here, the "steep" wall st, which conforms to the telescoping direction, and the "slanted" wall sc of the two toothing elements, profile groove and profile nose, which intersects it, can be clearly seen.

[0055] The connection of the individual parts shown in Figs. 1 to 6 can preferably be achieved if the individual parts are welded together in a sealing manner along the gap between the lining plates 110, 110 / 1, 110 / 2 and the lining plate rings 120. The welding can be carried out either manually or by means of an automatic welding process.

[0056] For example, it is known from the prior art to heat the surfaces of the individual parts and to bond or press them together using the heat. Alternatively, a heating element can be inserted between the individual parts and then the individual parts are pressed together, for example using clamps or other suitable means. Once the heating element is heated, the individual parts are welded together along the heating element. For example, the heating element can be a steel or copper element that is heated by applying voltage. After welding, the heating element can optionally be removed from the material and reused, or it can remain in the material.

Claims

Patent claims:

1. Inliner lining body (100) with hollow cylindrical shape for the new construction of Shafts made of shaft rings equipped with such or for masonry shafts (6) requiring renovation or formed with shaft rings, which is particularly intended for backfilling with, preferably flowable and pumpable, setting and hardening binding agent (5), and which is formed with at least two, in particular three or more, stackable lining plate rings (120) formed from lining plates (110) which are laterally adjacent to one another on both sides and are preferably cylindrical shell sector-shaped, each of which has radially outwardly projecting edge stiffening ribs (11, 12; 13, 14) and between them, crossing one another, preferably at right angles, shell stiffening ribs (15, 16), characterized by - that both the two lateral generatrix edge stiffening ribs (13, 14) of each of the lining plates (1 10, 110 / 1 , 1 10 / 2) as well as the upper and lower circumferential edge stiffening ribs (1 1 , 12) of the same and thus also each of the lining plate rings (120) formed with them are designed alternately per lining plate (101) as profiles with continuously recessed profile grooves (131 ) and as such with continuously extending profile noses (141 ), - that the profile grooves (131) and profile noses (141) thereof have cross-sections which are substantially identical to one another and which fit snugly into one another, and which can be pushed into one another linearly and without undercuts, - whereby both the lining panels (110) themselves and the lining panel rings (120) formed with them can be connected or forcibly connected to one another in a locking manner via the toothed elements (131, 141; 111, 121) which prevent joining gaps or points, whereby a tight welding can be achieved horizontally and vertically and, when a concrete backfill is introduced, a tight closure.

2. Lining body (100) according to claim 1, characterized in that the profile grooves (111, 131) and profile noses (121, 141) of the stiffening ribs (11, 12; 13, 14) have a triangular cross-section with a vertical steep wall (St) which is the same as the direction of pushing or stacking and an inclined wall (Sc) which intersects the same at an acute, optionally rounded, angle.

3. Lining body (100) according to claim 1 or 2, characterized in that the profile grooves (11 1 , 131 ) and profile noses (121 , 141 ) of the circumferential and generatrix edge stiffening ribs (1 1 , 12; 13, 14) are designed with a triangular cross-section having two oblique walls having the same or different bevels and intersecting one another at an angle.

4. Lining body (100) according to one of claims 1 to 3, characterized in that the profile noses (141) and the profile grooves (111) of the generatrix edge stiffening ribs (13, 14) are displaced or offset from their free ends inwards towards the lining plates (110).

5. Lining body (100) according to one of claims 1 to 4, characterized in that the upper and lower circumferential edge stiffening ribs, profile grooves (111, 131) and profile noses (121, 141) of the lining panels (110) each have alternating interfitting rectangular, square or trapezoidal cross-sections per panel.

6. Lining body (100) according to one of claims 1 to 5, characterized in that the inclined wall (Sc) or the inclined walls of the profile grooves and profile noses (111, 121; 131, 141) of the profiles of the stiffening ribs (11, 12; 13, 14) is or are formed with at least one, optionally rounded, step.

7. Method for producing shaft rings for the construction of new shafts, in particular sewerage shafts, or for the renovation of shafts in need of renovation, whether made of brick or formed with concrete rings, characterized in that a) lining plates (110, 110 / 1, 110 / 2) are joined to one another via toothing elements (131, 141) of their generatrix edge stiffening ribs (13, 14) to form a lining plate ring (120), that b) at least two of the lining plate rings (120) formed according to a) are stacked on top of one another and connected to one another via the toothing elements profile groove (111) and profile nose (121) of the profiles of their upper and lower circumferential edge distribution ribs (11, 12) to form lining bodies (100), which c) in the Shaft ring or manually inserted into the shaft (6) requiring renovation, after which d) after which the individual parts are welded together in a sealing manner along the gap between the lining plates (110, 110 / 1, 110 / 2) and the lining plate rings (120), e) a setting and hardening binding agent mass, preferably mortar or concrete, is pumped or manually introduced into an annular space (106) between an outer surface of the wall of the lining body (100) formed according to a) and b) and an inner wall of the shaft ring or of the shaft (6) requiring rehabilitation and is allowed to set and harden after possible compaction.

8. Shaft (6) obtainable or formed from lining bodies (100) according to one of claims 1 to 6.

Images