DE3700883A1 - Method of renewing linear underground structures accessible by walking or crawling and having a closed profile, in particular sewers, as well as a set of plastic structural elements for realising the method - Google Patents

Abstract

Method of renewing linear underground structures, accessible by walking or crawling and having a closed profile, in the form of underground conduits, in particular sewers, as well as a set of plastic structural elements for carrying out the method. In this method, an inner pipe (lining pipe) is made inside the structure with the use of plastic structural elements, and the hollow space located between the inner pipe and the already existing structure is filled with a subsequently hardening material. In this arrangement, the inner pipe is produced from pipe sections, consisting of plastic structural elements of the same length or essentially the same length and attached to one another by means of connections with groove and rib, in such a way that the adjacent pipe sections are connected to one another by means of plastic sleeves which surround the ends of the pipe sections in a sealed-off manner from outside, are held together and stiffened, and are composed of several parts. The connections with groove and rib can be made here by sealing material, appropriately synthetic-resin cement on a polyester basis, being inserted between the structural elements fitting together. The pipe sections and the sleeves can consist of glass-fibre-reinforced polyester structural elements.

Description

The invention relates to a method for renewing begehba lines or crawlable, closed profile shaped structures underground, especially sewers without their detection. The invention also relates to Realization of the method serving set of components Plastic.

The main thing under renovation is the waterproofing of existing structures, e.g. B. damaged channels and the corresponding increase in strength of the same stand.

The renewal of the damaged or destroyed channels and other similar character lines of the public Public works appears worldwide as an ongoing acute problem. The renovation of existing pipelines and the laying of new ones on densely built and populated gees offer, e.g. B. in large cities is particularly difficult related issues, especially because of the prevention of ver kehrs, the need to maintain the lines of their public works / cables, water pipes etc./ as well their causes. The ever faster pace of the Ver Aging can be done using traditional reconstruction methods accordingly can not be met rationally.  

Numerous renewal and state-of-the-art technologies, the application of which Ex- and / or infiltration of the liquid-promoting tube can be reduced or remedied without their detection, with individual process solutions even a reconstruction of the Structures - the improvement or restoration of the Festig properties of the pipelines - enable.

Of the procedures that do not require exposure for a long time the application, z. B. Splashing the water tightness increasing or ensuring a corrosion protection Fabrics applied to the inner surface of the channel walls. The night Part of these procedures consists in that, on the one hand, they are sent to External surfaces cannot be used, on the other hand the Do not increase the strength of the sewer lines. The coating layer The majority are based on silicate (see e.g. the AT PS 1 80 905 and 2 55 338).

Another disadvantage of the silicate-based coatings consists in the fact that their material essentially with that of the Be sound channels is identical and therefore the corrosion resistance the latter not increased. Attempts have been made to use it made of synthetic resin-based duct insulation coatings, however, the construction is difficult bind - there are completely clean, dust and grease free, here for surfaces with dry and open pores necessary, on the one hand because of objective causes (Ver impurities, destroyed surfaces), on the other hand with the areas The majority of the structural execution of cases can not be secured - that in practice the application of these resin-based coatings by has set.

According to a further known method, using a Water-filled film tube soaked in synthetic resin  Felt lining installed in the channel in such a way that the Binding of the resin is ensured by heating the water. With this method, the internal corrosion protection of the Ka nals solved and the exfiltration (possibly a very small ge infiltration) can be prevented, but the disadvantage be says that this method is only for repairing in static Regarding still stable channels can be used. A Another problem means that the abrasion effect in the wastewater solids present a rough mechanical damage to the Coating, d. H. the lining can bring. To through The use of this technology requires a special facility derlich what an obstacle to the widespread use of the same means. This method can therefore primarily be used for Er innovation of small diameter, possibly creepable profile having channels are applied.

Among those for complete renewal (i.e. not just for Repair of local errors, e.g. B. bad pipe connections) serving methods are becoming increasingly popular, the repaired in the damaged channel use built inner pipes. For such tasks are like this probably hard PVC pipes as well as polyethylene pipes used where where the low friction factor of the plastics is used, despite the narrowing of the cross-section in general (but not always) enable approximately the same water production. The However, application of this casing technology is limited Diameter and the shape of the plastic pipes that can be produced Boundary, on the one hand for reasons of manufacturing technology - who which only made tubes with circular profile, on the other hand they are Plastic pipes practically only up to not accessible or be crawlable diameters suitable for carrying loads. At the same time but it is known that the Lei Most egg profile or another from the circle have softening cross-sectional shape. Another disadvantage of Use of PVC pipes is because of their low  Compressive strength in a work phase only the repair of cures zen channel sections and therefore numerous start pits must be excavated, which on the one hand the repair costs increased, on the other hand, an obstacle to urban traffic Circumstance is. In the case of using polyethylene pipes the casing pipeline entering the sewer on the ground area, d. H. welded together from details and pulled into the channel. A serious disadvantage of this Technology is one that is of diameter and tie length of the channel depending on the channel, d. H. occasionally except neatly long starting pit is required and this as well the welding work carried out on site except one neatly need large work space what often makes large area closures necessary above ground.

From AT-PS 2 51 986 is one with thin-walled polyethylene pipes Known technology to be carried out, according to which the pipes by ei a shaft is drawn into the sewer. In reality it can this procedure - as far as you have a casing pipe with a wall thickness intends to use that is still dimensionally stable in the Practice cannot be performed because of the required bending radius not guaranteed when inserted through the shaft can be. However, if such a thin-walled tube is used det, which can be bent to the required extent, it comes to a circular profile, is no longer to bear external loads effective and therefore more like a film tube than a fixed one tube.

The contemporary in relation to carrying loads Requirements are best met through the technologies at those made of thermosetting synthetic resins - in the majority Polyester and more rarely made of epoxy resins - inner tubes made are used. Such a solution relates e.g. B. HU-PS 1 76 391; with the help of the complex described therein Process - if straight pipe sections are required -  channels from a starting pit each with a length of about 500 fdm be diverted. In this case too, however, occurs as a night partly the fact that - albeit in a small amount Dimensions - the initial pits interfere with traffic; the extent of the disturbances can, however, be in relation to the occurrence of vertical or horizontal breaks in direction (direction changes) or bends increase significantly.

The width of the initial pit can be in the case of channels large (1.0-1.5 m exceeding) diameters inevitably such dimensions that they are an acceptable level cause excessive road narrowing.

Already the transport and storage of the lining of Channels with such large diameters required plastic pipes cause serious problems and are with we considerable additional costs. If you intend channels with large diameter and a different from the circular profile Renew cross section with plastic pipes, so here are position of the plastic pipe components individual tools required that bring a further increase in costs.

Technologies will eliminate the disadvantages listed is looking for ceramic tiles in the majority by cement mortar tel to the areas to be renewed. This Ma material can namely through the existing shafts in the Canal are transported, so that with traffic disruptions only in minimal extent must be expected. With this method be However, the renewal is limited to the channel sole area. The entire inner surface of the channel is filled out in this way dresses, so are the ceramic tiles (clay tiles) - next to theirs Embedding in cement mortar - using rivets or screws on the already existing duct wall attached.

Methods are also known in which the channel lining  not from ceramic plates, but from glass fiber reinforced ze ment mortar slabs, which are in the channel by means of screws and Wedges are attached or clamped together. The between the existing channel wall and the inner shell existing hollow room is then filled with cement mortar.

The basic disadvantages of this design solution are the low Strength of the jacket, its inadequate load capacity, continues the fact that the sulfate corrosion resistance of the jacket - since it is a cement-bonded material - not is corresponding. Another disadvantage means that with the Continuation of external corrosion and, as a result, of the back the load-bearing capacity and later even the loss of the sta the existing duct wall, the inclusion of the external loads fully on the built coat, which - due to its low fes activity - cannot perform this function.

Plastic shells have already been used for Components proposed. These are in their overlapped Be reach the existing ones by means of rivets or screws Fixed concrete channel walls. Both these and the Execution solutions described above, in which as Be fastening elements metal screws or bolts or pins for Use, the corrosion protection of the same means one serious concern as it is potential for destruction Mean errors. The plastic shell components are not or only to a small extent to carry loads suitable.

The purpose of the invention is to create a method for renewal of walk-in, linear profile with closed profile Buildings underground, especially canals, e.g. B. sewers without their detection, both in terms of strength and also the impermeability to water  fully met, no use of corrosion sensitive Be fastening elements, e.g. B. requires steel bolts or screws and thus also eliminates the potential sources of error and thereby can be carried out quickly and economically.

The invention is based on the knowledge that in the case when one can also move the load-bearing capacity accordingly and move it by hand barrel-shaped art with weights and dimensions fabric components through sealed connections with groove and Connect the spring to each other and a cross from them sectional shape of the existing channel corresponding but an in smaller diameter self-supporting inner tube provides and - the existing channel only as one order and suitable for assembling the barrel components manufactured cavity - the one between the outer surface of the inner tube and the inner surface of the existing one Channel-shaped annular space with a post-hardening Fills out material - without any auxiliary component Corrosion would be exposed - the already existing channel all of it (e.g. load-bearing, liquid-carrying changing etc.) functions completely and permanently in the Location is. Here, the process can be carried out quickly and efficiently become real.

Based on this knowledge, the task was thereby solved that an inner tube (casing) within the already existing structure using plastic components manufactured and that between the inner tube and the existing one Building existing space with a post-hardening material is filled, and its essential feature is that the inner tube in the longitudinal direction by means of connections with groove and spring connected to each other, of equal length or in existing substantially identical plastic components Pipe sections is made in such a way that the contiguous beard pipe sections abge from the outside with the help of their ends  seals surrounding, holding together and stiffening plastic sleeves assembled together in several parts get connected. Conveniently, the connections formed with tongue and groove so that between each other the subsequent components sealing material, functional Licherlich synthetic resin putty is introduced where however, this is not essential since the verb the adjacent components in the longitudinal direction can be easily assembled. After one Another feature of the invention for the manufacture of the Rohrab cuts and the sleeves glass fiber reinforced polyester components used. This material can meet the respective requirements speaking statically good is against corrosion resistant and due to its high strength values can be obtained from relatively small wall thicknesses and ge components with high density and high strength tubes are assembled.

According to a variant of the method, the inner tube sections and using the sleeves through the manholes of the be already existing channel in these transportable dimensions having pipe or sleeve components manufactured. These Measure eliminates the need to dig up trenches and therefore the traffic is carried out according to the invention not interrupted my work.

The work is also simplified by the measures according to which the Plastic pipe and socket components with the help of inside of the existing linear structure z. B. channel be mobile funding, e.g. B. on wheels mobile carriage can be changed.

Although - as already mentioned - the pipe elements are also simply in joined together to fulfill their function will be between the Plastic pipe elements generally waterproof and mitar  processing connection with tongue and groove provided and itself load-bearing inner pipe sections built. The water permeability of the inner tube is more favorable if between the adjacent inner pipe sections and the sleeves elastic material, conveniently made of soft rubber placed, advantageously in the longitudinal grooves of the socket components inserting sealing rings are used.

Especially when renewing an egg or circular cross section having sewers, it is advantageous if the inner Pipe sections from the components of an arc such shaped barrel components formed component set together which is made out along its two longitudinal edges (sides) components with grooved connecting strips and having ribs along their two longitudinal edges (sides) Components or / and along one of their longitudinal edges Grooved connecting bar, along its other length randes, on the other hand, consists of components having a rib.

According to another feature of the invention, it is useful if the adjacent inner pipe sections with the help of sleeves are connected to each other, consisting of two arched, in the cross cut T-shaped, with an inward center be provided with longitudinal stop support rib sleeve parts stand, the bottom and top - expediently - by means of Ver binding elements are connected to each other, the be adjacent inner pipe sections with their end faces to the both opposite sides of the stop support ribs be joined together.

For a further advantageous embodiment of the invention The process is characterized in that the inner tube is constructed in this way will that in the building to be renovated z. B. in a channel an end sleeve - inserted into the intended flow bed height provides - is attached, arranged in this sealing rings  and between the outer surface of the socket and the inner surface of the building a seal is installed; of the end sleeve is marked with an et what less distance than the length of a pipe section Guide channel made and a second sleeve - without sealing rings - Assembled and provisionally one size in their location rem distance from the end sleeve as a pipe section length, purpose conveniently in a length corresponding to a pipe section Distance fixed from the guide trough; after that the Pipe components a pipe section with a closed profile assembled; then the finished pipe section with the second sleeve together - e.g. B. with the help of a washer and a rope attached to this - to the stably attached end sleeve pulled; the second sleeve is from the end of the pipe section removed, the seal is provided and then to the end attached to the pipe section and these operations are then until the completion of the inner tube of the desired length analogously repeated and at least after consolidation an advantageously but several z. B. 6-8 pipe sections - in a known manner - the filling of the back cavity room with post-hardening material z. B. by injecting with Cement mortar made.

In the sense of a further feature of the invention, before the injection animals of the back cavity but after completion of the interior pipe in the inner pipe wall at the junction of one or A corresponding section is provided for several connecting channels tigt, the junction profile with an annular flexible ge closed collar surrounded by the feeding of later hardened material and thereby around the confluence Sealing accomplished and the injection followed is made. But you can also proceed so that the Junction of the connection channel or channels in this or in these channels - conveniently made of hard plastic foam manufactured - later removable plugs are provided, then the inner pipe was finished and then the inner pipe  jection of the back cavity and after hardening the injected filling compound at the junction of the Aus cut finished, the filling open and cut through Remove the plug from the inlet profile of the connecting channel is released.

The plastic component set according to the invention contains several across to the longitudinal direction of using them parallel inner lines (generating) deciding, with for the production of groove and rib connections arc-shaped parts provided with suitable parts Barrel components and to compile the profile of the Suitable sleeve having suitable inner tube shape fenbauelemente. The set of components expediently contains along their edges in both generatrix directions (their Long side) with grooved connecting bar containing clay components; along their edges in both coat line directions (their long sides) of ribbed barrels components, or / and along their edge in a Mantelli direction (its one long side) with grooved connector Application bar along its edge in the other direction of the generatrix (its long side) a barrel components with a rib. With With the help of such a set of components, e.g. B. the renewal channels with an egg profile can be effectively carried out.

Characteristic of an embodiment of the component set is that for each sleeve two identical shape, dimensions and Cross-sectional sleeve parts are provided which both ends with connecting ribs extending outwards are equipped in which one or more to carry out suitable for screws or similar fasteners Through holes are arranged; and putting it together the sleeve parts to a sleeve in the side by side neighboring ribs the geometric central axes of the neighboring bearded holes fall in a straight line. It is useful  if one between the adjacent stop support ribs Gap between the sleeve parts closing elastic tion is provided. According to another advantageous invention feature the sleeve parts are T-shaped in cross-section, feature in in the middle via an inward extension from the cover plate impact support rib, and in both sides of the support rib running, inward-facing cover plates are open Elastic best suitably made of soft rubber existing, annular sealing elements serving grooves intended. It is advantageous if the cover plates are the same Have width and the width of the rib conveniently is equal to or approximately the same as the width of the cover plates.

The invention is further based on the drawing gene explains the more important stages of the process as well the barrel components used, their connection dung, the individual construction details of the renewed Ka nals and the aids used in the course of the procedure illustrate. It shows

Figure 1 shows the initial phase of the method according to the invention in a longitudinal section representing a channel part.

FIG. 2 shows a plan view from the direction of the arrow A drawn in FIG. 1 on a larger scale;

Fig. 3 is a section along the line B - B in Figure 1 in a larger scale;.

FIG. 4 shows the cross-section of a renewed by the inventive process channel to a larger scale;

Figure 5 is a perspective view of the lower barrel component of the inner tube of Fig. 4.

Fig. 6 is a side view of the barrel component of FIG. 5;

FIG. 7 shows the top view of the barrel component according to FIG. 6;

Fig. 8 shows the section along the line C - C in FIG. 7;

Fig. 9 shows the section along the line D - D in FIG. 7;

Fig. 10 is a perspective view of the upper barrel construction element of the inner tube of FIG. 4;

Fig. 11 is a perspective view of a side Ton nenbauelementes the inner tube of FIG. 4;

Fig. 12 is a perspective view of another since union barrel component according to Fig. 4;

Rod 13 shows the detail E in Figure 5 to a greater extent..;

FIG. 14 is the detail J of Figure 4 in cross-section in a larger scale.

Fig. 15 seen the connection of two adjacent inner pipe sections in the transverse direction ensuring sleeve from the longitudinal direction of the channel;

FIG. 16 is the cross section along the line F - F in Figure 15 in a larger scale;.

. Fig. 17 shows the detail G in Fig 15 in a perspective bottom view on a larger scale;

Rod 18, the detail H in Figure 15 to a greater extent..;

Fig. 19-22 illustrate the technological phases of assembly and adjustment of an inner tube section;

Figure 23 is a further important technological phase of the method on a larger scale.

FIG. 24 is the connection of a connecting channel tube (A muzzle-channel tube) and the renewed channel in vertical section;

Fig. 25 is a that of FIG. 21 similar but different operations terminal node.

In Fig. 1 a part of an existing channel 1 to be renewed according to the method according to the invention can be seen. The length ª having Direction portion of a concrete made with a egg-shaped channel (Fig. 3) is triggered by means of the shut-off element 3 and the pump 4 or shut off, ie secured to the directing to work ver a water-free work space. In channel 1 is seen in the flow direction indicated by the arrow b direction immediately after the one shaft 2, the channel profile by means of an elastic material such. B. rubber-made inflatable balloons 3 a completed, the latter being connected via the hose 3 b to a (not shown) compressed air source. The balloon 3 a completely fills the cross section of the channel 1 in the inflated state, so that the liquid level v ₁ comes about behind it. A second inflated balloon 3 a includes - at a distance from the former ª - in the flow direction b seen in front of a shaft 2 shows the cross section of the channel 1 from. With the help of the pump 4 , the liquid level v ₁ reaching the upper amount of liquid is pumped into the channel part located behind the lower shut-off body 3 , where the liquid level v _{2 is} established. The suction head of the pump 4 was designated 5 , the suction line 4 a , the pressure line 4 b and the motor 13 .

In the dewatered ar working space described above, the manufacured in the sense of the invention made of plastic and consisting of the generally designated 7 tons components and the designated 26 sleeve components de, in Fig. 4 overall designated 10 inner tube with ge closed Profile assembled. As can be seen from FIGS. 1 and 2, the dimensions of the barrel components 7 and the sleeve components 26 are selected such that they are conveyed through a shaft 2 into the channel 1 and are stacked there in large numbers by means of a mobile conveyor can be transported further. This operation is illustrated by FIGS. 1 and 3. In Fig. 1, the direction of movement of the transport vehicle 6 movable on the wheels 8 has been designated by the arrow c , the progress of the renovation work going in the opposite direction. Dement speaking, the manufacture of the inner tube, the flow direction b seen in the upper end of the dewatered section by the installation of a sleeve 26 , which is used to connect two barrel components 7 composed of inner tube members in the transverse direction and on their detailed description and role will come back later. As can also be seen from Fig. 1, an annular waterproof seal 9 was installed between the sleeve 26 and the inner surface of the channel 1 .

The inner tube 10 (casing tube) shown in Fig. 4 is composed of four different barrel components: in each profile a lower barrel component 7 a and two lateral barrel components 7 c , 7 d are arranged in the longitudinal direction are connected to each other by means of connections with groove and rib 12 . Between the inner surface of the existing channel 1 and the outer surface of the inner tube 10 is made of post-hardening material such. B. from cement mortar a filling 11 is provided, which is introduced by injecting into the annular gap or cavity between the two pipes. The barrel-shaped components 7 a - 7 d are preferably made of glass fiber reinforced polyester, but each corresponding strength and friction coefficient having corrosion-resistant hard plastic corresponds to this task.

In FIGS. 5 through 9 is an advantageous execution form of the lower barrel-shaped component 7 a detail to see, in which the longitudinal edges of the arcuate plate 15 are formed as a reinforced, grooved connecting strips 14, except the area of the two ends of the barrel Bauele mentes 7 a , where only groove-free arcuate plate strips 16 of width d are provided, which facilitate the connection of the adjacent tubular members in the transverse direction. Incidentally, the groove 17 of the connecting strips 14 is delimited by a longer outer plate 18 and a shorter inner plate 19 . The plate strips 16 fall into the extension of the plates 19 (see in particular FIGS. 8 and 9), and their inner surface runs in the same plane with the inner surface of the arcuate base plate 15 .

Fig. 10 shows in Fig. 4 in cross section visible top re barrel component 7 b in perspective view, in which ent along the longitudinal edges of the arcuate base plate 20, the ribs 21 extend, the outer surface of which corresponds to the outer surface of the base plate 20 , wherein they snap back inside compared to the inner level of the base plate, since their thickness is less than that of the base plate.

In Fig. 11, the lateral component 7 ton was c of FIG. Shown in a perspective view 4. Along one longitudinal edge of the arc-shaped base plate of this component runs the connecting strip 23 provided with a groove, along which the rib 24 extends at the edge thereof. The connecting bar 23 is identical in its design to the connecting bar 14 shown in FIGS. 5 and 8, so that its length has also been designated in this case with the number 17 . At both ends of the component 7 c , groove-free arcuate plate strips 16 are also provided in the transverse direction in this case.

The visible in Fig. 12 lateral barrel component 7 d differs from the barrel component 7 c of FIG. 11 only in relation to its arc shape and its width, which is why the other corresponding component parts have been designated with the reference numerals already used .

In Fig. 13, the detail E of FIG. 5, that is, the end of the groove-provided connecting bar 14 (which is the same as the connecting bars visible in FIGS . 11 and 12) is shown on a much larger scale. Also in Fig. 13, the reference numbers already used in Figs. 5 to 9 were used ver to designate the same construction parts. It can be seen well that the length x ₂ of the groove 17 from the outside delimiting projecting plate part 19 exceeds, wherein the length y of the arcuate plate strip 16 in the transverse direction can be equal to the dimension x ₁ .

. In Fig. 14, the 4 designated detail in figure F, that is, the 12 taking place with groove and rib connecting an upper barrel component 7 b and 7 c a lateral ton device - seen in a larger scale. The rib 21 of the barrel component 7 b is inserted into the groove 17 of the connecting bar 23 of the barrel component 7 c . The contiguous construction parts can with the interposition of a sealing material 25 , expediently a synthetic resin putty based on polyester z. B. by HORP putty.

The barrel components 7 a - 7 d of the component set are of the same length h (see FIGS. 7, 10, 11 and 12). The value h can e.g. B. 3.0 m, the height of the inner tube 10 (casing) according to Fig. 4 z. B. 1560 mm, its greatest width, however, z. B. 1040 mm.

At the end of each two-ton components of 7 a -.. 7 d by means of connections with groove and rib 12 in the longitudinal direction of Figure 14 assembled inner pipe portions 10 of the length h in the transverse direction is illustrated in Fig 15 to 18 in gan zen 26 designated Sleeve. The egg-shaped - that is, the profile of the existing channel 1 ( Fig. 3) in shape and dimension corresponding sleeve 26 consists of two elongated arc-shaped, the same shape and dimension having sleeve parts 26 a and 26 b , the bottom and top sealed with Connections 27 are attached to each other. The sleeve parts are also made of plastic, expediently made of glass fiber reinforced polyester. The sleeve part 26 b can be seen in a larger scale Darge presented cross section in Fig. 16. The sleeve part 26 b (which the sleeve part 26 a is completely the same) has a T-cross section having cover plate 28 and one of these in the inwardly projecting stop support rib 29 ; the thickness t thereof is equal to or substantially equal to the thickness of the terminals designated by a dashed line and generally designated by the reference number 7 of the barrel components. 7 In the protruding from the rib 29 on both sides of the end plates 28 a of the cover plate 28 is arranged in the longitudinal direction along the groove 30 , in which, for example, from an elastically deformable material. B. Soft rubber manufactured linear sealing elements 31 are provided. When the sleeve parts 26 a , 26 b ( FIG. 15) are pulled together, these are pressed onto the outer surface of the adjoining barrel-shaped components 7 and thus ensure complete impermeability to water. The length of the cover plates k is equal to the width d of the arcuate transverse leaf strips 16 of the barrel components 7 a , 7 c and 7 b visible in FIGS. 5, 6, 7, 9, 10, 11 and 12 - the strength t of the rib 29, however, 20 mm, the full thickness T of the sleeve part 26 b z. B. 50 mm, its width M z. B. 270 mm.

In Fig. 17 a useful lower connection and tensioning possibility of the parts 26 a , 26 b of the sleeve 26 is shown in a perspective view on a larger scale (the detail G shown in Fig. 15). From the cover plates 28 there is at each of their adjoining ends a transversely directed connecting rib 32 , which abut one another and in this position contain common longitudinal axes z having through bores - in the present example three such bores - by tightening the screws inserted through them 33 the sleeve parts 26 a and 26 b are pulled together, between which previously the gap 35 extending in the transverse direction closes, made of elastically deformable material such. B. made of soft rubber processing element 34 was inserted.

The provided between the sleeve parts 26 a and 26 b upper Ver connection 27 (according to FIG. 15 the detail H ) is shown in section in FIG. 18. However, since this connection is practically the same as that shown in Fig. 17, the mutually corresponding components have been designated with the reference numerals or letters already used. It is easy to see that by tightening the screws 33 of the lower and upper clamping connections 27, a stable and sealed connection from the adjacent inner tubular members 10 is guaranteed.

Figs. 19 to 22 illustrate the main Bautech gical phases of the completion of the inner tube 10. In the working phase according to Fig. 12 of located at the top of FIG. 1 from the closed and dehydrated to be renewed channel section, the first assembled sleeve 26 (this is also shown in Fig. 1), then processing with the water-like 9 in their Position walled all around is fixed in the intended flow bed level. In this end sleeve 26 , the sealing rings 31 are also arranged according to FIG. 16. Incidentally, the beginning of the channel section to be renewed was designated by a broken line and the reference letter K. At the same time, a cradle-shaped guide trough 36 is made at a distance 1 ₁ from the concrete end sleeve, which promotes the assembly of the barrel-shaped components ( FIG. 1) and the guidance of the finished casing member during its contraction. At the same time, another sleeve 26 ' - without a sealing element - is assembled, which is only temporarily secured in its position by means of the wedges 37 . The distance 1 _{2 of} this second sleeve 26 ' from the first sleeve 26 (from the end sleeve) is greater than the length h of an inner tubular member 10' , which in FIGS . 20 to 22 and z. B. was drawn in Fig. 7. Preferably, the guide trough 36 and the second sleeve 26 'are at a distance of h from each other.

In the next working phase according to FIGS. 20 and 21, the barrel components 7 (e.g. from the barrel-shaped components 7 a - 7 d described in detail above ) become an inner tube (casing) member 10 ' of length h , Conveniently assembled so that the connecting grooves of the lower barrel construction elements before the insertion of the upper barrel components with sealing material, for. B. HORP putty (such a material was identified in Figure 14 by reference number 25 ). The arrangement of the upper components can be done with a so-called jumping-in - taking advantage of the elasticity of the plastic of the components.

When the inner tube member 10 'is completed, behind the provisionally wedged second sleeve 26' is arranged the same shape as this having a washer 38 , to which a rope marked with a dotted line is attached, by means of which the tube member 10 ' in the end sleeve 26 can be drawn in. This operation is illustrated in FIGS. 21 and 22 with an arrow recorded on the rope 39 .

In the next working phase according to Fig. 22, the second sleeve 26 ' from the end of the inner tube section 10' from the position 1 _{3 was} removed and then after arranging the seal (see Fig. 15 to 18) and possibly spreading with putty again on the rear end of the inner tube section 10 ' raised.

Finally, the sleeve 26 'is placed in the flow level and then after inserting the seal between the sleeve 26' and the existing channel between the existing channel 1 and the inner tube section 10 ' before existing annular cavity - by injecting with a post-hardening material , generally filled out with cement mortar. This filling-in was designated with the reference number 11 in FIG. 4. In practice it is appropriately preceded that only after completion of two or more inner pipe sections 10 ' an area around a sleeve is sealed - by the operations according to FIGS. 19 to 22 - when using the sleeve 26' as an end sleeve with a fixed position to the next cycle - until completion of the desired length, e.g. B. 5-8 pipe section lengths, corresponding pipe 10 are retrieved analogously, ie the pipe formed by several pipe sections is sealed and the pipe space behind it is filled by injecting ren. It should be noted that both the connections with groove and rib in the longitudinal direction and the sleeve connections in the transverse direction in the same way the complete water impermeability and the barrel components or the inner pipe sections ensure the static composite effect, so that - at the same time Taking into account the effect of the injected filling - with the help of the method according to the invention, a completely watertight and structurally resilient construction is obtained.

FIG. 23 illustrates an advantageous possibility of realizing the injection process and the connection into a shaft. The directly adjoining the shaft 2 right-hand inner tube member 10 '' is cut to size - that is, the length h 'of this tube member in the majority of cases is shorter than the length h of the other tube members. By the last seal 9 located directly next to the shaft 2 surrounding seal 9 , the injection tube 42 is guided into the cavity behind the inner tube and through this z. B. by means of cement mortar to fill 11 between the inner tube 10 and the already existing channel 1 to. The injecting continues until the injected material appears in the vent pipe 43 (which has been drawn in on the left-hand side of FIG. 23 for the sake of clarity). It can be clearly seen that the injection pipe 42 is inserted at the channel bottom into the cavity behind the inner pipe, whereas the ventilation pipe 43 opens into the shaft 2 at the top. The injection takes place - taking into account the channel gradient b ( Fig. 1) - always from the lower point. It can be clearly seen that the liquid injection material penetrates through the holes 40 formed as a result of the damage to the already existing channel 1 into the surrounding earth and solidifies there; these outflowing and solidifying blocks of material were designated with the reference number 11 ' . The injected material 11 naturally fills the irregularities of the inner surface of the already existing channel 1 well. If a sleeve 26 reaches a point at which the inner surface of the channel 1 is damaged to a great extent, the project-oriented position of the sleeve can be achieved by means of a single, shown in Fig. 23 on the right side below, z. B. made of concrete compensating body 41 ge secures. The bottom channels of the shaft are formed in a known manner in the last phase.

In Figs. 24 and 25, the connection possibilities are Ver connection channels to the renewed according to the invention illustrated before handenen main channel 1. Fig. 24 shows the case in which, after installation of the inner tube 10, however, before the injecting of the filler material 11 in the wall of the inner tube 10, the cutout 45 is completed, the cross section of which is the same as the cross section of the connecting channel 44 which is also present in the Channel 1 reaching end before the channel 1 reaching end before the installation of the inner tube 10 was cut abge. Before injecting, a flexible, internally hollow, tubular annular collar 46 was provided in the area around the mouth of the tube 44 , which was filled with cement mortar 11 ' . This collar ensures a perfect seal, so that the injection of the material 11 can be made in the cavity behind the inner tube. The area around the entry point is compensated by mortar application 46 . In the case of FIG. 25, the filling 11 is first injected and only then is the opening cut out in the wall of the inner tube 10 ; therefore, before installing the latter, the mouth of the connecting tube 44 with an easily removable z. B. made of hard plastic foam stop fen 48 completed and then after installing the inner tube 10 and making the injection and the subsequent hardening of the injected material of the cutout 45 , the filling 11 broken through at the junction and the stopper 48 removed.

The advantages associated with the invention are as follows: Connections with groove and rib in the longitudinal direction between the Plastic-made barrel-shaped components and the muff provide connections between the adjacent pipe sections the possibility of inner pipes of channels with a larger cross section from small dimensions and consequently ratio moderately light components in self-supporting design, with Using simple means and technology that is easy to implement to manufacture. Such small components can be used be that this through the already existing manholes in promoted the channel and there z. B. stacked on top of each other Wagons can be transported further. It is not necessary derlich, the plastic components such. B. by means of bolts or Fix screws to the wall of the existing duct conditions, which is why potential corrosion defects are eliminated. The Plastics - especially the glass fiber reinforced polyester - can be statically exact, according to the current moderate corrosion protection requirements and are easy to assemble (e.g. by jumping in). That has a small wall thickness pointing inner tube is reduced - since the space requirement of the socket is also reduced fen is minimal - only to a small extent the profile of the already existing channel, so that due to the cheaper coefficient of friction the plastic's carrying ability practically none Undergoes change. The screw connection used for the sleeves dung get into the injected mortar filling, so that are completely protected against corrosion. That way the channel renewal using the invention quickly, effectively, in a way that ensures a lasting effect with a ra tional construction technology made without disrupting traffic will.

The invention is of course in no way limited to that in  The above-described method or the use of the sleeves and tons of components, but can be made within the defined protection circuit in numerous ways become light.

Claims (23)

1. Procedure for the renewal of closed profile on pointing linear structures underground, in particular be walkable or crawlable channels, in the course of which, within the existing structure using plastic components, an inner tube (casing) is made and that between the inner tube and the existing one Structure located cavity is filled with a post-hardening material, characterized in that the inner tube ( 10 ) from tube sections ( 10 ', 10'' ) consisting of mutually connected by means of connections with groove and rib ( 12 ) connected to the same length or substantially the same length Plastic components ( 7 ) is produced in such a way that the adjacent pipe sections ( 10 ', 10'' ) with the help of their ends sealed from the outside to give, holding together and stiffening, from several parts len ( 26 a , 26 b) assembled plastic sleeves ( 26 ) are interconnected. 2. The method according to claim 1, characterized in that the connections with groove and rib ( 12 ) are made in such a way that between the adjoining components you processing material, expediently synthetic resin putty based on polyester is introduced. 3. The method according to claim 1 or 2, characterized in that for the manufacture of the pipe sections ( 10 ', 10'' ) and the sleeves ( 26 ) glass fiber reinforced polyester components are used. 4. The method according to any one of claims 1 to 3, characterized in that the inner tube sections ( 10 ', 10'' ) and sleeves ( 26 ) using through the shafts ( 2 ) of the already existing channel ( 1 ) in the Channel ( 1 ) transportable dimensions of pipe or sleeve components ( 26 a , 26 b) are constructed. 5. The method according to any one of claims 1 to 4, characterized in that the plastic made pipe and sleeve components with the help of an inside the already existing linear structure, z. B. channel ( 1 ) movable För dermittel, z. B. a wheeled ( 8 ) mobile carriage ( 6 ) be promoted (transported). 6. The method according to any one of claims 1 to 5, characterized in that the channel to be renewed ( 1 ) is switched off in sections with the help of shut-off constructions ( 3 ) from the liquid conveyance and the water is seen from above - the direction of water flow (b) - above of the closed section is conveyed into the channel part which is below the closed section. 7. The method according to claim 6, characterized in that used as a final construction via a hose ( 3 b) connected to a compressed air source made of elastic material ge balloon ( 3 a) is used. 8. The method according to any one of claims 1 to 7, characterized in that between the tubular components made of plastic ( 7 ) waterproof and mutually cooperating connections with groove and rib ( 12 ) formed and self-supporting inner tube sections ( 10 ', 10'' ) get extended. 9. The method according to any one of claims 1 to 8, characterized in that cut between the adjacent inner Rohrab ( 10 ', 10'' ) and the sleeve ( 26 ) made of elastic Ma material, expediently made of soft rubber, advantageously in the Longitudinal grooves ( 30 ) of the sleeve components ( 26 a , 26 b) are inserted sealing rings ( 31 ). 10. The method according to any one of claims 1 to 9, characterized in that the inner tube sections ( 10 ', 10'' ) from the components of such an arcuate barrel construction elements ( 7 a - 7 d) formed component set are assembled building components along both of its longitudinal edges a grooved connection bar (14) containing (7a) and along its two longitudinal edges ribs (21) the components included (7 b), and / or along its one longitudinal edge a grooved connection bar ( 14 ) along its other longitudinal edge, however, a rib ( 21 ) containing structural elements ( 7 c , 7 d) . 11. The method according to any one of claims 1 to 10, characterized in that the adjacent inner tube sections ( 10 ', 10'' ) with the help of sleeves ( 26 ) who are connected to each other, which consist of two arcuate, T-shaped in cross section, in the middle with an inwardly projecting, longitudinally extending stop-support rib ( 29 ) provided sleeve parts ( 26 a , 26 b) , which are preferably connected below and above by means of connec tion elements ( 27 ) to each other, the adjacent inner tube sections ( 10 ', 10'' ) with their end faces on the two opposite sides of the stop support ribs ( 29 ) are added. 12. The method according to claims 1 to 12, characterized in that the inner tube ( 10 ) is constructed so that in the building to be renovated, for. B. a channel ( 1 ) an end sleeve ( 26 ) - set in the intended (projected) flow bed level - is fixed, sealing rings are arranged therein and a seal ( 9 ) is installed between the outer surface of the sleeve and the inner surface of the structure; at a smaller distance ( 1 ₁ ) than the length (h) of a pipe section ( 10 ' ) from the end sleeve ( 26 ) a guide rings ( 36 ) made and a second - provided with no sealing rings - sleeve ( 26' ) assembled and in one greater distance ( 1 ₂ ) than the length (h) of a pipe section ( 10 ' ) from the end sleeve ( 26 ), expediently at a distance (h) corresponding to the length of a pipe section ( 10' ) (h) from the guide trough ( 36 ) is provisionally fixed in place; then assembled from the pipe components ( 7 ) a pipe section ( 10 ' ) with ge closed profile; then the completed pipe section ( 10 ' ) with the second sleeve ( 26' ) together - z. B. with the help of a pull-in washer ( 38 ) and a rope attached to this ( 39 ) - to the fixed end sleeve ( 26 ) is pulled ge; the second sleeve ( 26 ' ) from the end of the pipe section ( 10' ) removed, a seal is arranged therein and then added to the end of the pipe section ( 10 ' ), and these work gears until the completion of the inner pipe ( 10 ) in the ge Desired length are repeated accordingly and after completion of at least one, advantageously several z. B. 5-8 pipe sections filling the cavity located behind the inner tube with post-hardening material ( 10 ) z. B. cement mortar by injection - in a known manner - is made. 13. The method according to any one of claims 1 to 12, characterized in that before injecting the cavity behind the inner tube but after completion of the inner tube ( 10 ) at the junction of the connecting channel ( 44 ) or the connec tion channels in the wall of the inner tube Cutout ( 45 ) is made, the profile of the confluence is surrounded by an annular, flexible, closed collar and this is expanded by the introduction of post-hardening material ( 11 ' ) and thereby brought about a shut-off at the confluence and the injection is carried out accordingly becomes. 14. The method according to any one of claims 1 to 13, characterized in that at the confluence of the connecting channel ( 44 ) and the connecting channels in the channel (the channels) ( 44 ) a removable - conveniently made of hard plastic foam - stopper ( 48th ) is arranged, then the inner tube ( 10 ) is completed, then the back cavity is injected and after hardening of the injected filler ( 11 ) the cutout ( 45 ) is finished at the junction, just there the filler ( 11 ) is broken and by removing the Plug ( 48 ) the inlet profile of the connecting channel ( 44 ) is cleared. 15. Plastic component set for realizing the method according to any one of claims 1 to 14, characterized in that it parallel to the longitudinal direction of the inner tube to be produced with their use ( 10 ) parallel surface lines pointing, with suitable for making connections with groove and rib parts provided arc-shaped barrel components ( 7 a - 7 d) and to put together the outline of the cross section of the inner tube ( 10 ) corresponding shape having sleeves ( 26 ) containing suitable sleeve parts ( 26 a , 26 b) . 16. Component set according to claim 15, characterized in that it has a groove provided with a groove connec tion bar containing barrel-shaped components ( 7 a) along their two in the generatrix direction (longitudinal) edges; extending along both in the envelope line direction (longitudinal) edges (b 7) with a rib (21) provided barrel-shaped elements and / or along its one extending in the envelope line direction of the edge (longitudinal edge) has a grooved connecting strip (14) along its other in the Mantelli line direction edge (longitudinal edge), however, a rib ( 21 ) having barrel-shaped components ( 7 c , 7 d) ent. 17. A component set according to claim 16, characterized in that the thickness (thickness) of the grooved connecting strips exceeds the thickness (thickness) of the base plate ( 15, 20, 22 ) of the barrel-shaped components ( 7 a - 7 d) , and that the outer plate ( 18 ) delimiting the groove ( 17 ) is longer than the plate ( 19 ) delimiting the groove ( 17 ) from the inside. 18. A component set according to claim 16 or 17, characterized in that at both ends of the barrel-shaped components ( 7 a , 7 c , 7 d) provided with a groove connecting bar ( 14 ) at least along its one longitudinal edge ( 7 a , 7 c , 7 d) free, arc-shaped from such connecting bars transverse connection plate strips ( 16 ) are provided, the width (d) of which is selected in accordance with the width dimension of the sleeves ( 26 ). 19. Component set according to one of claims 16 to 18, characterized in that the thickness (thickness) of the connecting ribs running along the edge ( 21 ) is smaller than the thickness (thickness) of the base plate ( 15, 20, 22 ) of the barrel-shaped components and that the outer surface of the ribs ( 21 ) in the continuation of the outer surface of the base plates ( 15, 20, 22 ) falls. 20. Component set according to one of claims 15 to 19, characterized in that two sleeves ( 26 a , 26 b) having the same shape, dimension and same cross-section are provided for each sleeve ( 26 ), which protrude outwards at their two ends Have connecting ribs ( 32 ) in which one or more through holes suitable for pushing through screws ( 33 ) or similar connecting elements are provided, and when the sleeve parts ( 26 a , 26 b) are joined together to form a sleeve ( 26 ) in the adjacent ones that come next to each other Ribs ( 32 ) the geometric center line (s) (z) of the neighboring hole (s ) fall in one line. 21. The components according to claim 20, characterized in that between the adjacent stop support ribs ( 29 ) a gap ( 35 ) between the sleeve parts ( 26 a , 26 b) from closing elastic seal ( 34 ) is provided. 22. Component set according to one of claims 15 to 21, characterized in that the sleeve parts ( 26 a , 26 b) are T-shaped in cross section, in the middle a stop support rib ( 29 ) projecting inwards from the cover plate ( 28 ). have and in this support rib ( 29 ) running on both sides, inward-looking cover plates ( 28 a) for receiving elastic, expediently made of soft rubber material annular sealing elements ( 31 ) serving grooves ( 30 ) hen hen. 23. A component set according to claim 22, characterized in that the cover plates ( 28 a) have the same width (k) and the width of the rib ( 29 ) is expediently the same or approximately the same as the width of the cover plates.