DE3821626A1 - Prestressed structural body which is fitted together using a plurality of precast reinforced-concrete compound units - Google Patents

Abstract

The invention relates to a prestressed structural body which is fitted together using a plurality of precast reinforced-concrete compound units (2), can be connected at the joints (6) thereof by a setting filler and in the case of which tendons can be drawn into sheaths (4), which are concreted into the individual precast reinforced-concrete compound units (2), and braced there, it being possible to fill, in particular, the interspace between the sheaths (4) and the tendons with injection mortar. The invention provides that the sheaths (4) are connected to one another, beyond the region of the joints (6) between adjacent precast reinforced-concrete compound units (2), to form continuous pressure-tight ducts (8) for the tendons. <IMAGE>

Description

The invention relates to one of several Precast reinforced concrete parts joined and at their joints building structure connected with hardening filling compound in one Prestressed concrete construction according to the preamble of claim 1.

Such a structure is from DE-OS 33 35 141 known in the form of a cylindrical container in which the reinforced concrete precast to the jacket of this container he complete. However, the invention is not based on the design of a cylindrical container limited.

The invention relates to the special form of a Prestressed concrete construction, in which the prestressing elements only subsequently inserted into prefabricated reinforced concrete parts be brought. For their contribution are in the individual Precast reinforced concrete cladding pipes through which the tendons can be retracted and in which they can stretch and shift for tension. These Prestressed concrete construction is chosen if several reinforced concrete finished parts should be connected to each other. It is common, but not mandatory in all cases required the space between the cladding tubes and the tendons subsequently with injection mortar at least partially fill up. In addition, the joints  between adjacent precast reinforced concrete parts associated with hardening filler, usually one Grout.

So-called tensioning elements serve in particular as tensioning elements strands or monostrands composed of individual wires are set and generally made of corrodible high strength Prestressing steel exist within a plastic jacket is arranged with fat filling. This is supposed to Steel corrosion can be avoided, e.g. under the influence of Water or even aggressive liquids, which in the Containers are kept. It will be shown that the In contrast, the invention creates more advantageous conditions, so that other tendons can be used, possibly even those with a corrodible surface.

The invention relates in particular to a such a structure that is still movable as a whole because the filling compound in the joints between the reinforced concrete divide and the injection mortar may not have been applied yet are. It is therefore a moving together hanging intermediate product of the finished building.

However, the invention is also concerned with finished building structure in which the filling mass and possibly the injection mortar has hardened. Such finished construction bodies can be immovable on site from the prefabricated be movable precast reinforced concrete components.

With such structures, the bracing takes place the tendons usually only after the filler has hardened mass in the joints between the precast reinforced concrete. Depending on the type of grout, the injection mortar can be applied tendon used before or after tightening it  consequences.

In the generic known structure of the DE-OS 33 35 141 serves the same material as a filling material for the joints between the precast reinforced concrete and as In injection mortar. This material is used in the area a joint between two adjacent precast reinforced concrete elements introduced and then over the gaps between the Cladding tubes on the one hand and the tension strands on the other hand there and distributed in the other joints (DE-OS 33 35 141, esp. P. 6, last paragraph). This procedure has several aftermath parts:

• a. To the free channels within the cladding tubes around the instep To fill the strand around, the one in question must be injected filling mortar used must be very thin, especially because of the intermittent break in the envelope pipes on the joints between adjacent reinforced concrete no pressure can be built up. Such a low-viscosity grout is undesirable, e.g. due to an adverse shrinkage and a need digen composition of expensive fine stock share. In general, this results in a restriction to only certain masses for the two purposes are suitable.
• b. There is a risk of incomplete filling channel between the cladding tubes and the instep braid, which is why in DE-OS 33 35 141, the last completely. Paragraph on p. 5, it is even said that "the Void difference at least partially with packing material can be filled in. This makes the situation safety of the tensioning wire in the cladding tube impaired.  Tendons with corrodible surfaces can then do not apply at all because no complete Corrosion protection is guaranteed. Injection mortar can one selects itself in such a way that it has anti-corrosion properties has. However, these properties are exemplary with the filling compound in the joints between neighboring ones Precast reinforced concrete parts can be dispensed with. In some cases only partially backfilling also unfavorable in terms of construction be.
• c. One hardened on the tensioning strands on the joint side Mass can lead to undesirable buckling stresses in the instep lead strand or another tendon, and that especially when combining the individual Precast reinforced concrete in itself undesirable in the Practice but usually not completely avoidable side ver set of adjacent reinforced concrete precast elements against each other follows.

The invention is based on the objective to avoid mentioned disadvantages as a whole. Accordingly is the object of the invention, a genus to create moderate building, which the following requirements united with each other:

• a. Freer and in particular independent choice of filling material in the joints between neighboring prefabricated reinforced concrete parts on the one hand and possibly an injection mortar on the other;
• b. Avoiding buckling stresses on the tendon especially in joint areas between adjacent steel precast concrete parts;
• c. the possibility of a normally complete ver  pressing the cavities between the cladding tubes and the tendons in it with injection mortar with practically complete cavity filling and
• d. the possibility of a more versatile use of instep structure.

This task is in a generic construction body by the characterizing features of claim 1 ge solves.

In the structure according to the invention, the joints between the individual reinforced concrete components on the one hand and the spaces around the tendons, on the other hand, even in the joint area separated from each other so that a complete free choice for the fillings of the joints and if necessary the In injection mortar. It can no longer become one harmful interaction of the hardened filler Joint and the tendons come. The pressure tight off guidance of between the individual prestressed concrete parts continuous wrapping of the tendons also provides Sure, in this grout under a ratio to be able to inject moderately high pressure and thus a Ent formation of cavities around the tendons practical to be able to reliably avoid. This allows yourself Tendons that could not be used previously, e.g. those with a corrodible surface, by suitable Choice of injection mortar can be used without any problems.

The continuous provided according to the invention pressure-tight channels can be according to claim 2 and advantageous developments of claims 3 and 4 alone to assemble from cladding tubes. Alternatively, you could  still remember individual cladding tubes in the joint area itself connect to each other pressure-tight. These solutions require but on at least some precast reinforced concrete protruding ends of the cladding tubes, which is sometimes and is considered to be unfavorable in terms of installation technology.

This disadvantage can be resolved according to the solution Avoid claim 5 in which in the individual steel precast concrete-encased cladding pipes through in the Joint areas arranged between the precast reinforced concrete nete additional bridging pipes communicating with each other who are connected. These bridging tubes can for example, only immediately before installing the he inventive structure from the individual reinforced concrete dividing into a joint interface of the same be set. According to claim 6, it is ensured that when retracting the tendons in the Invention according to the intended continuous pressure-tight channels the use of the bridging pipes no or at most slight mechanical inhibitions result.

Claim 7 provides an alternative in which bridging the joints between adjacent steel beams precast clay parts by a telescopically movable link is provided, which concerns in the transport state in the prefabricated reinforced concrete part completely or essentially inserted can be pushed. This is not only important in terms of of transportation, but also when a ring closed building with the last reinforced concrete finished part must be supplemented. While one is still incomplete permanent ring-shaped arrangement of the individual elements of the ring can be inserted into each other in the circumferential direction, be have difficulty inserting the last radially  Precast reinforced concrete in the then closed ring, at for example the wall of a cylindrical container. Ent speaking also applies in other cases when a steel precast concrete part can be inserted into a gap must, for example, a finished part in a special version tion, e.g. if only an insertion from above or below is possible. Claim 7 relates to the preferred In case of actuation of the telescopic link by means of a print medium. In addition to pneumatic and hydraulic Actuations are preferably one actuation due to sufficiently closable pressure-transmitting cement mortar, which after its solidification is also a Detection of the telescopic link in the extended position. In other cases one would have to Take additional security measures, e.g. Final digit security fuses. Such a cement mortar would also a channel in the precast reinforced concrete, through which close the print medium.

The mentioned embodiment with telescopic Link can generally be provided; usually it is enough yes, this embodiment only as a special form in addition to use other described embodiments.

It is advisable to use a piston over which the Pressure medium on the telescopic member, i.e. the about bridging sleeve, acts to also slide on the outside and so side streams of the pressure medium, which for the Actuation not needed to be practically excluded. The claims 11 and 12 offer two constructive for this Possibilities that are real, but also separately can be based.  

It is conceivable the individual pipes which he form the pressure-tight continuous channel according to the invention, i.e. Cladding tubes with each other and / or with bridging tubes or bridging sleeves using adhesive or welding technology or tightly fastened connecting sleeves etc. with each other to unite. Preferably, however, be on the connector put between the pipes which are the continuous channels form, sealing elements arranged, which expediently from ela resilient material, e.g. made of rubber or a rubber substitute. These sealing elements can if necessary, even on the relevant cladding or bridging tube or the bridging sleeve, e.g. bulge cannulated or glued. Usually, however, one is sufficient positive or even frictional arrangement.

When sealing, make sure that the steel concrete of the individual precast reinforced concrete parts even for under injection mortar introduced at a higher injection pressure is sufficiently pressure tight. The sealing element must therefore in primarily a seal against the joint areas between precast reinforced concrete parts. It is therefore sufficient in many cases if the sealing element only on the circumferential side of the relevant duct-forming pipe is arranged and injection mortar at the connection points between adjacent channel-forming tubes within the Reinforced concrete parts a little up to the plant on the reinforced concrete the finished part in question oozes out. Possibly you can use the sealing element with this and other regulations against axial displacement due to positive locking Secure engagement with the pipe, e.g. in particularly simple Way by end stop on a radial front crack of the pipe. The latter option allowed  it, the sealing element from the free end without hindrance to be able to slide open to the end stop position.

According to claim 14, the sealing element in double also function as the piston on or in the cladding tube telescopically movable link, the bridging sleeve, serve, then preferably serving as the piston Sealing element also in relation to an intended slide leadership seals.

Claim 16 makes the rubber-elastic property a seal made of the appropriate material can also be used for a joint function if Neighboring reinforced concrete precast in the building with something lateral offset in the joint area relative to each other be ordered. In the case of using a bridging kungsrohres, in which a sealing element at both ends is seen, you even get a particularly large one lateral mobility in the manner of a double joint. In the mentioned case of using a bridging The sealing element can then be tubular due to its formula in addition also as a means of holding into the concerned precast reinforced concrete inserted bridging serve pipes. It is basically possible that the Sealing elements opposite the free ends of the channels the pipes are clearly offset axially. The bigger the Dislocation is the greater the free dislocate themselves Ends of the channel-forming pipes in their connection area when bent. The sealing element is therefore preferably at the free end of one of the one continuous Channel-forming pipes arranged. Claims 18 and 19 describe advantageous embodiments.  

So far, only designs have been explicitly mentioned, where the sealing element on the outside of the concrete of the reinforced concrete partially supported. Alternatively, however, according to An say 20 the sealing element outside also on a tulip of the Support the cladding tube, and if necessary this turn-up again in turn be supported on the concrete of the precast reinforced concrete element can, but does not have to.

The funnel-like concrete design according to claim 22 facilitates the plugging of the joint-bridging channel forming pipes when assembling the precast reinforced concrete elements to the structure according to the invention. While for the purpose of a relatively strong taper is desirable in itself, this is to support a seal elements less suitable. Claim 23 therefore sees one mode Specification of the funnel-shaped connection area before which in the rear area the support conditions of a Sealing element improved.

As with the generic prior art is the inventive structure in particular for Suitable for the production of a cylindrical container in which the precast reinforced concrete parts complement each other to form the container jacket. As in the case of the known generic construction body are particularly large-format buildings spoken, whereby in the case of the example of a cylindri tank diameter of six to thirty meters and more and heights of three to eight meters and more are typical are.

The invention will now be described more schematically Drawings on several embodiments even more  individual explained. Show it:

Fig. 1 a detail of a section through two adjacent precast concrete in the joint region, which are combined to form a building structure according to the invention;

Fig. 2 shows a first alternative to the representation of Fig. 1;

Fig. 3 shows an alternative to Fig. 2 in the same representation with the representation of two variants in the two different prefabricated reinforced concrete parts and the

FIGS. 4 and 5 illustrations of a further exporting approximate shape with a telescopic member, where Fig. 4 in otherwise constant manner of representation with only one reinforced-concrete prefabricated part with inserted telescopic member, and Fig. 5 in the representation of FIGS. 1 to 3, the connection of two prefabricated reinforced concrete parts extended telescopic link shows.

The various embodiments of FIGS. 1 to 5 have the following in common:

In the concrete of precast reinforced concrete parts 2 cylindri cal cladding tubes 4 are preferably made of plastic, or another material, concreted.

Several prefabricated reinforced concrete parts are joined via a joint 6 to form a structure, the joints 6 being connected to the finished structure with hardened filler material, not shown.

The cladding tubes 4 of the individual prefabricated reinforced concrete parts are ideally axially aligned with one another in the structure. In practice, it can come to a certain lateral offset to each other when assembling the reinforced concrete precast elements to form the structure, as is most clearly shown in FIG. 2. But even then, the cladding 4 adjacent Stahlbe prefabricated clay parts 2 should still be approximately in alignment angeord net that prefabricated parts can be retracted into the cladding tubes 4 of adjacent reinforced concrete, a common tendon, not shown. These tendons have an outer diameter that is significantly smaller than the inner diameter of the cladding tubes 4 . The remaining space is filled as completely as possible with injection mortar, also not shown.

The required ones are also not shown Means to the tendons in the assembled building to brace for the production of a prestressed concrete construction.

The various embodiments of FIGS. 1 to 5 represent different means by which the cladding tubes 4 are connected to one another to form continuous pressure-tight channels 8 for the tendons over the region of the joints 6 between adjacent Stahlbe prefabricated parts 2 .

In all cases, pipes which form the channels 8 stand out at least at a joint interface 10 continuously or in a pushed-out state in the assembled state. Their assembly is made easier with regard to the discussed possibility of a certain lateral offset of adjacent reinforced concrete precast elements 2 that a conical recess 12 with a taper into the reinforced concrete precast element 2 runs into the joint interface 10 and funnel-like the "threading process" of the above free pipe ends facilitated.

The practical reinforced concrete precast parts and from them Manufactured building can the respective representation in have multiple execution; is shown in each case only the connection area along a tendon in the joint area between two adjacent reinforced concrete finish. The connection to other reinforced concrete dividing is appropriate.

In the individual exemplary embodiments, fol The following peculiarities are shown:

Fig. 1 relates to a case in which the through pressure-tight channels 8 are formed from immediately successive cladding tubes 4 . A free end 14 of the cladding tube 4 protrudes from the joint boundary surface 10 from the precast reinforced concrete part 2 shown on the right in FIG. 1. In the reinforced concrete part shown in FIG. 1, on the other hand, the cladding tube 4 is reset relative to the joint interface 10 there . The aforementioned free end 14 of the cladding tube 4 penetrates according to the left Dar position in Fig. 1 in the recessed area 16 , so that the connection area 18 between the two cladding tubes 4 of the two precast reinforced concrete elements 2 in the precast reinforced concrete part shown on the left in Fig. 1 whose joints interface 10 is offset inwards. This Anschlussbe rich 18 is located at the end of the conical recess 12 .

Around the circumference of the free end 14 of the cladding tube 4 extends a sleeve-like rubber-elastic Dichtele element 20 with a certain distance from the connection region 18th

The sealing element 20 is on the one hand sealing against the circumference of the penetrating cladding tube 4 and on the other hand against the outer surface of the conical recess 12 sealing, which also serves as an external support.

In Fig. 1 it can be seen that the sealing element 20 fulfills the function of a rubber-elastic joint in the case of the lateral offset of the two prefabricated reinforced concrete parts 2 relative to one another, but in which the opposite free ends of the two cladding tubes are somewhat offset from one another.

The conical recesses 12 are arranged on both prefabricated steel parts and on the one hand enable the articulated pivoting of the free end 14 of the cladding tube on the other reinforced concrete part on the side of the sealing element 20 as well as in this a certain, in Fig. 1 Darge presented lateral deflection.

The hatched concrete of the steel precast concrete parts is also sufficiently tight against injection mortar injected with pressure into the space between the tendons and the cladding tubes 4 . Since there is already a small gap in the connection area 18 in view of the certain lateral displacement and pivoting of the opposite ends of the cladding tubes between them, it is permissible that the space 22 between the connection area 18 and the sealing element 20 outside of the cladding tube 4 and is replenished within the conical recess 12 by the injection mortar in the finished assembled building.

With otherwise comparable functioning and construction, the embodiment according to FIG. 2 differs in that in both reinforced concrete prefabricated parts, the areas 16 provided only in the prefabricated part 2 shown on the left in FIG. 1 are present and the area of the joint 6 to form the continuous pressure-tight channel 8 is bridged by a bridging tube 24 . Whose two free ends 14 penetrate in the same way into both reinforced concrete precast elements , as is discussed in the case of FIG. 1 with regard to the one free end 14 of the one casing tube 4 . This creates two connection areas 18 , each of which is set back with respect to the adjacent joint interface 10 .

As in the case of FIG. 1, the individual NEN forming the channel 8 tubes 4 and 24 are arranged axially opposite one another.

Furthermore, around both free ends 14 of the bridging pipe 24, sealing elements 20 in the manner of the single sealing element 20 according to FIG. 1 are arranged.

It can be seen that the arrangement of the two rubber-elastic sealing elements 20 results in the function of a Doppelge joint, which allows greater lateral displacements of the two adjacent precast concrete parts relative to one another with the same deformation of the individual sealing element.

Also, the injection of mortar subsequently padding bare space 22 of FIG. 1 is tonfertigteile present in the embodiment of Fig. 2 in duplicate in each of the two Stahlbe.

The embodiment according to FIG. 3 varies the embodiment according to FIG. 2, whereby in both cases a bridging tube 24 is provided between the cladding tubes 4 of the two adjacent prefabricated steel parts 2 to be connected to the duct 8 .

The deviations from the embodiment according to FIG. 2 described below with reference to FIG. 3 can also be transferred in a simple embodiment to the embodiment according to FIG. 1.

A first peculiarity is that the sleeve-shaped sealing element 20 is arranged at the free end 14 of the bridging tube 24 (in transfer to FIG. 1 of the cladding tube 4 ) and no longer has an axial offset with respect to the connection area 18 . In addition, the sealing element 20 has a substantially angular cross-section, the axially extending leg is formed by the sleeve-shaped shape of the sealing element and which has an inwardly directed angle leg 26 , the pinhole-like on the end face of the respective free end 14 of the bridging tube 24 abuts.

The hole diameter of the annular diaphragm formed by the angle leg 26 corresponds approximately to the inside diameter of the cladding tubes 4th The free ends 14 of the bridging pipe 24 are so drawn in relative to their central region that they also cut there with their inner cross section to that of the respective cladding tube 4 to be fitted to allow trouble-free pushing of the tendons in the connection areas 18 . As illustrated, the bridging tube 24 can thereby have a slightly larger internal cross-section in the central area long, without this being a necessary condition.

In the left part of FIG. 3 is thereby the angle leg 26 of the sealing element 20 against a shoulder 28 in the concrete of the reinforced-concrete prefabricated part 2 of which supports the sealing element axially and functional just as far in Abstützungs state compressed so that at the transition from the jacket tube on the angle leg 26 in the bridging tube 24 a steady course of the inner surface of the channel 8 is ensured.

In the right part of FIG. 3, the same shoulder 28 is formed, but here only as a limitation of a Ausneh tion for receiving the sealing element 20 , which is here in the tensioned state with some distance in front of the shoulder 28 is arranged. In this case, the shoulder 28 serves only as an end stop and thus protection against loss of the sealing element 20 from the bridging tube 24 with somewhat more unfavorable transition properties (rounded profile of the end faces of the sealing element).

The sealing elements 20 are not supported on an area of the same slope of the conical recess 12 as in the Dar positions of the previous figures, but on a strongly weakened conical area 30 , so that the radial deformation of the sleeve-like sealing element 20 varies only slightly over its axial length . In the limit, the area 30 can be strictly zy-cylindrical in a manner not shown or it can even widen somewhat in the manner not shown in the precast reinforced concrete part 2 again and thus keep the sealing element captive when the bridging tube 24 has not yet been inserted or after insertion. Preferably, the sealing element 20 is pre-assembled on the bridging tube 24 and inserted together with this.

Due to the position of the two sealing elements 20 at the end of the respective free end 14 of the bridging tube 24 , as shown in Fig. 3, a lateral offset of the one at the opposite ends of the cladding tubes 4 on the one hand and the bridging tube 24 on the other hand while still possible articulated pivoting out of the Bypass tube avoidable.

The last embodiment described with reference to FIGS . 4 and 5 varies the concept of a bridging tube 24 according to FIGS. 2 and 3 in such a way that the bridging tube here as a bridging sleeve 32 on the free end 34 of the envelope that ends within the precast reinforced concrete element 2 tube is guided telescopically. Accordingly, around the free end 34 , a cylindrical displacement space 36 in the reinforced concrete of the reinforced concrete prefabricated part 2 is saved, which connects to the narrow cross section of the conical cutout 12 into the prefabricated reinforced concrete part 2 .

The outer surface of the displacement space 36 is cylindrical and ge of a concrete 38 in the concrete of the precast reinforced concrete part 2 sleeve 38 with inner cylindrical sliding surface 40 forms. This serves as an external guide for an axial sliding movement of the in turn sleeve-shaped rubber-elastic sealing element 20 , which is arranged in the manner of the left or right partial image of FIG. 3 at the inner end 42 of the bridging sleeve 32 . Both sealing elements 20 are secured on their opposite end faces by an annular collar-like projection 44 in addition to securing by means of the angled leg 26 against axial displacement towards the center of the bridging sleeve 32 . A corresponding variant of the seal design and arrangement can also be provided in the case of the other embodiments.

26 a piston surface 46 of the telescopic adjustment distance on the free end 34 of the respective cladding tube 4 is used in the case of Fig. 4 and 5 while the radial face provides the angle leg for a function of the sealing element, wherein this along as a piston for the axial displacement of the bridging sleeve . The stroke volume of the piston is limited on the side opposite the sealing element within the precast reinforced concrete part 2 by an annular shoulder 48 , at which the displacement space ends. In the vicinity of the annular shoulder 48 leads an injection channel 50 for injection cement in prefabricated reinforced concrete part 2 to the outside, can be injected through the injection mortar, which is suitable as a pressure medium to the bridging sleeve 32 from the retracted state shown in Fig. 4, in which the Free end 52 of the bridging sleeve is approximately aligned with the joint interface 10 on the same reinforced concrete part 2 , in the shown in Fig. 5 Darge pushed arrangement to move. In this, the bridging sleeve performs the same functions as the bridging tube 24 according to the arrangements according to FIGS. 2 and 3.

It can be seen that in the embodiments of FIGS. 4 and 5, the sealing element 20 also provides a seal with respect to the cladding tube 4 and also with respect to the sliding surface 40 , to which it comes to rest in a sealed manner over a significant axial distance in each case in the compressed state .

The arranged at the free end 52 of the bridging sleeve 32 sealing element 20 is carried when changing from the arrangement according to FIG. 4 to the arrangement according to FIG. 5 of the bridging sleeve 32 .

Claims (24)

1. From several prefabricated reinforced concrete parts ( 2 ) joined together at their joints ( 6 ) with hardening filler ver bindable structure in a prestressed concrete construction, in the tendons in cladding tubes ( 4 ), which are embedded in the individual prefabricated reinforced concrete parts ( 2 ), and bracing are bar, in particular the space between the cladding tubes ( 4 ) and the tendons can be filled with injection mortar, characterized in that the cladding tubes ( 4 ) over the area of the joints ( 6 ) between adjacent prefabricated reinforced concrete parts ( 2 ) to pass through with each other pressure-tight channels ( 8 ) for the tendons are connected. 2. Building structure according to claim 1, characterized in that the cladding tubes ( 4 ) are dimensioned and so precast in the reinforced concrete ( 2 ) are concreted in that they protrude from at least one joint interface ( 10 ) with a free end ( 14 ). 3. Building structure according to claim 2, characterized in that the cladding tubes ( 4 ) are concreted in adjacent reinforced concrete len ( 2 ) that they are set back at one end against the joint interface ( 10 ) there and with it from the other joint interface ( 10 ) protruding free end ( 14 ) penetrate into the recessed area ( 16 ) in the adjacent precast reinforced concrete part ( 2 ). 4. Building structure according to claim 2, characterized in that alternately reinforced concrete prefabricated parts ( 2 ) are provided, in which either both ends of the cladding tubes ( 4 ) protrude from two ent opposite joint interfaces ( 10 ) or are set back over this and the protruding free ends ( 14 ) in the recessed areas ( 16 ) penetrate. 5. Building structure according to claim 1, characterized in that in the region of the joints ( 6 ) between adjacent reinforced concrete prefabricated parts ( 2 ) bridging pipes ( 24 ) are inserted, which penetrate with their two free ends ( 14 ) into the adjacent prefabricated steel parts ( 2 ) and connect it to the recessed ends of the cladding tubes ( 4 ). 6. Structure according to claim 5, characterized in that the bridging tube ( 24 ) at least at its free ends ( 14 ) has an inner cross section adapted to the inner cross section of the cladding tube ( 4 ) in the connection region ( 18 ). 7. Building structure according to claim 1, characterized in that a bridging sleeve ( 32 ) telescopically on a in a displacement space ( 36 ) in the reinforced concrete part ( 2 ) freely ending cladding tube ( 4 ), or in this, up to approximately in alignment with the joint interface ( 10 ) of the cladding tube ( 4 ) send prefabricated reinforced concrete part ( 2 ) can be inserted ( Fig. 4). 8. Structure according to claim 7, characterized in that at the free end ( 14 ) of the bridging sleeve ( 32 ) whose inner cross section is adapted to that of the cladding tube ( 4 ). 9. Building structure according to claim 7 or 8, characterized in that the bridging sleeve ( 32 ) is provided with a piston (sealing element 20 ) by a pressure medium, preferably cement mortar, for pushing out the bridging sleeve ( 32 ) in excess over the Joint interface ( 10 ) can be acted upon. 10. Building structure according to claim 9, characterized by an outer sliding guide ( 38 , 40 ) for the piston (sealing element 20 ). 11. Structure according to claim 10, characterized in that the sliding guide is formed in the concrete of the precast reinforced concrete part ( 2 ). 12. Building structure according to claim 10 or 11, characterized in that the sliding guide ( 38 , 40 ) in the concrete of the precast reinforced concrete part ( 2 ) has a concreted guide part (sleeve 38 ). 13. Building structure according to one of claims 1 to 11, characterized by marked on the connection areas ( 18 ) between the tubes ( 4 , 24 , 32 ) which form the continuous channels ( 8 ), arranged sealing elements ( 20 ). 14. Building structure according to one of claims 7 to 12 and 13, characterized in that a sealing element ( 20 ) is provided as the Kol ben. 15. Building structure according to one of claims 10 to 13 and 14, characterized in that the sealing element serving as a piston ( 20 ) also seals against the sliding guide ( 38 , 40 ). 16. Building structure according to one of claims 13 to 15, characterized by the arrangement of the sealing element ( 20 ) as a rubber-elastic joint between adjacent tubes ( 4 , 24 , 32 ) which form the continuous channels ( 8 ). 17. Building structure according to claim 16, characterized in that the sealing element ( 20 ) at the respective free end ( 14 ) of one of the one continuous channel ( 8 ) forming tubes ( 4 , 24 , 32 ) is arranged. 18. Building structure according to claim 17, characterized in that the sealing element ( 20 ) has a substantially angular cross-section and the inward angle leg ( 26 ) on the end face of the bridging tube ( 24 ) or the bridging sleeve ( 32 ). 19. Building structure according to claim 18, characterized in that the sealing element ( 20 ) on a shoulder ( 48 ) in the concrete of the reinforced concrete part ( 2 ) is held captive. 20. Building structure according to one of claims 1 to 13, characterized in that the sealing element ( 20 ) is supported on the outside on a tulip on the cladding tube ( 4 ). 21. Building structure according to one of claims 1 to 13, characterized in that the sealing element ( 20 ) is supported on the outside of the concrete of the precast reinforced concrete part ( 2 ). 22. Building structure according to one of claims 1 to 21, characterized in that from the connection area ( 18 ) one of the through channel ( 8 ) forming tubes ( 4 , 24 , 32 ) within a precast reinforced concrete part ( 2 ) up to the joint interface ( 10 ) in the concrete of which a conical recess ( 12 ) is arranged. 23. Building structure according to claims 21 and 22, characterized in that the conical recess ( 12 ) in the direction of the connection region ( 18 ) passes into a weakened conical or cylindrical region ( 30 ) on which the sealing element ( 20 ) is supported on the outside is. 24. Building structure according to one of claims 1 to 23, characterized in that the reinforced concrete prefabricated parts ( 2 ) complement the jacket of a cylindrical container.