HU222897B1 - Procedure for renovation of crawlable or accessible gravitational ducts - Google Patents

Abstract

During the procedure, the channel (1) is excavated, the upper part (1a) – ideally above the shoulder line – is dismantled, and a flow cable (5) is formed in the remaining lower part (1b) from waterproof shell elements, the gap behind which is filled with a post-solidifying material by injection. Instead of the broken upper part (1a) of the channel, a wall (7) is made to close the lower part (1b) containing the riverbed (18). The essence of the invention is to create base bodies (2a, 2b) extending longitudinally along the two sides of the lower part (1b), and masonry (7) from prefabricated reinforced concrete elements (7a) supported by their lower ends on the base bodies (2a, 2b) and connected to them with watertight connections (10) , 7b) are built. ŕ

Description

(54) A procedure for reconstructing a gravitational canal with a crawl or walkable section

EXTRACT

In the process, the channel (1) is exposed, its upper part (1a) preferably disposed above the shoulder, and the remaining lower part (lb) is formed from a watertight shell element (5), which is filled by injection curing. Instead of the dismantled upper part (1a) of the channel, a masonry (7) which closes the lower part (1b) containing the channel (18) is made.

It is an object of the invention to provide bases (2a, 2b) extending longitudinally along the two sides of the lower part (1b) and to pre-connect the masonry (7) with their lower ends to the bases (2a, 2b) and water-tight connections (10). made of reinforced concrete elements (7a, 7b).

Figure 1

HU 222 897 B1

The length of the description is 12 pages (including 5 pages)

HU 222 897 Bl

FIELD OF THE INVENTION The present invention relates to a method for renovating creep or walkable gravity channels, in particular sewers.

Such ducts, partly made of concrete and partly brick, have been severely damaged and occasionally damaged during decades of operation, so renovating them is a major problem worldwide. As these channels are usually located on public roads that are crowded with public utilities, professionals seek to use technologies that disrupt traffic to a minimum and in the shortest possible time. In Hungary, for example, in the capital and in the larger towns, unified system collecting and collecting channels were built in the middle of the last century, and reconstruction of these has had to begin in recent years due to the deterioration of sixty-eighty-year-old channels. The factor to be taken into consideration during the reconstruction is that due to the changes in the settlement conditions resulting from the settlement development, the runoff factors have increased, the volume of water entering the collectors and main collectors has increased, thus their drainage capacity is no longer sufficient.

The most important requirements to be met when renovating walkable and crawling sections, usually the main collecting gravity channels, are the following: channel layout, level of connections; the hydraulic properties of the canal should not be impaired as a result of the renovation; the renovation channel should have the same stability and service life as the new channel, or at least approach it; renovation should be economical.

Very often, the circumstances force the investor and the contractor to restore a damaged, corroded, technically defective, endangered section of canal to the original route so that it remains in place during the sewerage function of the canal, such as space, cost - to build a new canal on a new route, which, after bridging, will take over the function of the old canal and work can be completed by dismantling or filling the old canal.

The most commonly used solution for the renovation of crawler and walkable ducts in the world today is the lining of the existing duct with plastic, mostly fiberglass reinforced polyester board. Existing, corroded, damaged joints are cleaned, the liner - plastic sheathing - is installed, and the gap between the liner and the defective shingle is filled with injection-curing mortar. With uncovered technology, a smaller gauge, typically fiberglass-reinforced, resin-based liner is inserted into the existing channel, but in open-open technology, after dismantling the upper, usually over-shoulder portion of the existing gasket, the over-shoulder is lined with overlay. The advantage of such methods is that it is not necessary to expose the duct over its entire repair length, the side connections (home ducts) remain unchanged and the work can be carried out relatively quickly. However, the disadvantage is the reduction of the drainage cross-section and thus the drainage capacity, the extremely high investment costs and the fact that the upper layer of the fiberglass reinforced polyester sheets, which is about 0.3-0.5 mm thick, wears off relatively quickly ( wastewater containing solid components flowing into the canal has a high eroding effect), glass fibers are exposed to the surface and are destroyed, resulting both in a deterioration of the canal's hydraulic properties and in an inadequate renovation of the canal.

Hungarian patent application HU 194 344 discloses a method for renovating creep or walkable sewerage channels, in which the defective canal is dismantled, the upper part of the shoulder is disposed, and a plastic-fiberglass polyester-fiberglass, the upper section is made of monolithic concrete. According to this solution, in addition to the problems already mentioned, there are also general disadvantages of monolithic concrete construction technology, namely, high labor demand, long construction time, etc. It is also difficult to incorporate a plastic sheet liner over the entire profile. A further problem is that the section expansion is only possible in height, which in turn causes construction problems due to the egg-shaped section. In any case, the height of the sectional gauge is hampered by various utility lines over the canal.

SUMMARY OF THE INVENTION The object of the present invention is to provide a method for reconstructing gravitational channels with creep or walk that can be quickly and economically executed on existing trails, allowing continuous drainage of sewage through the gauge itself without temporary diversion, without expanding the gauge. it is possible that the height of the gauge should be increased.

The invention is based on the discovery that the technology of excavation and removal of the over-the-shoulder section can eliminate the problems associated with monolithic concreting by lining only the remaining lower section with abrasion resistant prefabricated reinforced concrete shells, which are wider than the original channel above the shoulder line and rely on separate bases that are made on site. In this way, the original circular or egg section can be converted into a conventional paddle section, known as "Paris", without being, or substantially not, upgraded, and in a paddle ("Paris") section with a reinforced flow channel Drainage and rainwater from interconnected systems can be drained under ideal hydraulic and speed conditions.

Based on the above findings, the object of the present invention has been solved by a process which

In the course of this process, the canal is opened, the upper part, preferably above the shoulder, is dismantled, and the remaining lower part is formed by a water-lining shell element, the gap behind which is filled with curing material by injection; instead of the dismantled upper part of the channel, a masonry sealing the upper part of the lower part of the river is formed, which method comprises making bases extending longitudinally along the two sides of the lower part, and waterproofing connections with the lower part made of reinforced concrete elements. As a result of this measure, on the one hand, the width of the section at the upper part of the river will automatically increase significantly, and on the other hand, the old weakened channel will be relieved of the load on the upper masonry to be constructed. channel lifetime.

According to a preferred embodiment of the method, longitudinal pads are formed from the post-solidifying, preferably waterproof material, between the lining legs of the lining extending beyond the upper edge of the channel and the lower ends of the upper masonry. This has resulted in a classic so-called "Paris" section with excellent hydraulic parameters. Advantageously, through the installation of iron embedded in the bases and upwards from them to the benches, the static cooperation between the bases and the benches is established.

According to another aspect of the invention, the liner is formed from liner elements extending outwardly from the ends of the stems and having flanges aligned with the inwardly sloping surface of the pads.

Another embodiment of the method is characterized in that the liner is constructed of curved prefabricated polymer concrete, preferably of quartz sand and of polyester resin, by cross-sectioning the two liners which together form an arcuate lining member in the form of a linear section. waterproof connection, and the successively arranged longitudinal lining members are also connected by waterproof transverse connections. Preferably, the longitudinal tension-centering plate, preferably the longitudinal watertight connection between adjacent liner elements, and preferably the transverse watertight connections between successive liner elements, is built into the lower, preferably thickened, end portion of one lining member and is formed by pressing or / and pulling it into a gap formed in an elastic deformable material, preferably a rubber-like ribbon sealing member, thereby applying pressure to the sealing member.

It is also advantageous to construct a brickwork made of prefabricated reinforced concrete masonry elements by cross-sectioning, in cross section, two prefabricated elements forming a curved, preferably parabolic, masonry section in their uppermost region with one another in a longitudinal direction. and the successively arranged longitudinal masonry prefabricated elements are also connected to each other by watertight transverse connections. In this case, it is advantageous if the longitudinal watertight connection between adjacent reinforced concrete masonry prefabricated elements - and preferably also the transverse watertight connections between the successive prefabricated elements - is built into and extending from the upper end part of one of the prefabricated elements. formed by pressing or / and pulling into a gap formed in a resiliently deformable material, preferably made of rubber, in the upper end portion of the other masonry prefabricated element, thereby applying pressure to the sealing element.

A further embodiment of the process is characterized in that the watertight connections between the masonry prefabricated elements and the base bodies are formed by filling the troughs in the base bodies formed by concreting, preferably steel U profiles, with a sealing waterproofing mass and the prefabricated masonry elements are inserted into the troughs with their longitudinal ribs narrower than the trough width. Finally, longitudinal concrete or reinforced concrete bases of the same height as the benches on the exterior of the masonry prefabricated elements, which rest against the masonry, preferably on the inside, are supported.

The invention will now be described in more detail with reference to the accompanying drawings, which show a channel modified by the method of the invention and illustrate its most important nodes. In the drawings: Figure 1 is a cross-sectional view of a gravity drainage section of a reconstructed section according to the invention;

Figure 2 shows a larger scale of

Figure 1 shows the node A, but in a position immediately preceding the interconnection of the prefabricated elements;

Figure 3 is a larger scale detail of Figure B in Figure 1, again in this case immediately prior to the lower lining member interconnection phase;

Figure 4 is a detail view of detail C of Figure 1;

Figure 5 illustrates the gauge expansion achievable by the renovation process of the present invention.

In Fig. 1, an existing egg sectional channel to be renovated is denoted by reference numeral 1, the upper part la of which is indicated by the dashed line, but the lower part of the lb, for example concrete material, remains and forms part of the renovated channel. In the lower section of the reconstructed channel, the channel 18 has a liner 5 made of polymer concrete, such as polyester concrete, which fills with a post-curing material 6 injected into the gap below and behind3.

HU 222 897 Β1 is available. Along said lower part of the channel 1b there is a concrete base slab 2a, 2b on both sides, on which the upper wall 7 of the channel, made of prefabricated reinforced concrete elements 7a, 7b, which is completely parabolic, rests on the channel. As can be clearly seen in Figures 1 to 4, both in terms of width and height, the channel to be renovated is located outside the upper part of the broken channel (indicated by dotted lines). As will be explained later, the masonry 7 is made of prefabricated reinforced concrete elements 7a, 7b which are connected to each other by a water-tight connection 20 on top. The parabolic liner 5 of the channel 18 also has flanges 5a ', 5b' at the top which are outwardly inclined with the upper level of the boards 3a, 3b made longitudinally between the liner 5 and the masonry 7, such as cement mortar. The liner 5 itself is made of liner members 5a, 5b which are longitudinally connected to one another by means of a watertight connection (see Figure 3). The benches 3a, 3b are mounted partly on the lower part of the channel lb and partly on the base bodies 2a, 2b. The work of the benches 3a, 3b and the base bodies 2a, 2b is ensured by the iron fittings 4. The base bodies 2a, 2b are provided with footings 8a, 8b made of reinforced concrete, which are flush with the side wall of the upper wall 9 of the channel and supported on both sides.

The coupling structure shown in Figure 1 is constructed as follows.

The channel 1 to be renovated is laid out and the total gauge to the shoulder is approx. The upper portion la (dashed line, Fig. 1), 2/3 of its length, is dismantled. The surface of the channel 18 in the lower part of the lb is substantially cleaned, preferably with a high-pressure water jet, to provide adequate hydraulic flow conditions for the dry water of this year, and then made of a mixture of polyester resin and quartz sand 5 The liner elements 5a, 5b, the bottom liner, are assembled as shown in FIG. As shown in Fig. 3 in a larger scale illustrating the method of forming the watertight connection 19 of Fig. 1, a sealing member 12 is formed at the lower end of the left lining member 5a with a surface flush with the face of this lining member. comprising a gap 12a extending over its free surface, preferably centrally extending about a width f of the sealing member 12; 2/3. On the outside, the sealing member 12 of thickness i is slightly tapered inwardly. At the lower end of the right-hand lining member 5b, a tension-centering plate 13, preferably made of stainless steel, extending outwardly therefrom, is embedded in this lining member; this is exactly opposite to said slot 12a, i.e. the slot 12a and the tension-centering plate 13 are in the assembled state of the liner elements 5a, 5b and, of course, immediately prior to the fitting operation, in a common central geometric plane y. By pressing the liner elements 5a, 5b in the direction of the arrows m in Fig. 3, the tension-centering plate 13 penetrates into a slot 12a slightly smaller than the thickness of this plate, stretching the resiliently deformable material of the sealing element 12, thereby applying pressure 5a, 5b. a perfect watertight connection is immediately formed between the liner elements without any additional measures (for example gluing), since the material of the sealing element 12 is adhered to the inner tensioning center plate 13 under high pressure and also secured against being pulled out. Thus, the liner 5 as a whole is waterproof as polymer concrete, which also has good abrasion resistance, is also provided in places outside the connection. As shown in Fig. 3, the tension balancing plate 13 has a length equal to or substantially equal to or less than the depth of the gap 12a from the front face of the liner 5b (although it may be shorter, but not substantially longer). The sealing member 12 and the tension-centering plate 13 are prefabricated in the lining members 5a, 5b. By way of example, the dimensions indicated in Figure 3 may be as follows: e = 55 mm (the larger portion is clamped in the liner 5b); / = 35 mm; / = 12 mm; / = 15 mm; g = 50 mm; k = 20 mm. The tension-centering plate 13 made of steel sheet can have a thickness of 4 mm. As shown otherwise in Figure 3, it is desirable to use liner elements 5a, 5b which, apart from their lower ends, have longitudinal ribs 14 extending 10-12 mm from a 20 mm sheet, trapezoidal, and the lateral distance between them exceeds the length of the widest trapezoidal side. The thickening of the ends of the liner elements 5a, 5b as shown in FIG. 3 is necessary to provide space for both sealing member 12 and tension-centering plate 13, and to exert maximum stress during both assembly and channel operation. The thickened end portions of the lining members 5a, 5b, on which these members rest below, facilitate the formation of a gap between their outer ribbed surface and the surface of the lower portion of the channel lb, which is required for safe filling (injection). The ribs 14 also naturally stiffen the low-thickness liner elements 5a, 5b, but at the same time facilitate a better bonding between the lower part of the channel lb and the lower surface of the liner 5 by injecting a curing material 6 into the gap. The filler material 6 may be, for example, cement or resin mortar. The filling 6 is continuously made by injection as the sewer renovation work progresses. The lengths of the liner elements 5a, 5b are basically selected with regard to handling and manufacturing technology. The successive watertight connections between the liner elements 5a, 5b are otherwise made by the same combination of sealing elements, tension-centering plates as described above with reference to Figure 3, but the transverse connections are, of course, formed by the arcuate section of the liner elements 5a, 5b. corresponding to vo4

EN 222 897 B1 with a lead. The seals formed by the longitudinal sealing element 12 and the tension-centering plate 13 extend uninterruptedly through the transverse sealing structures (not shown).

As can be seen from Figures 1 and 3, the above-described reconstruction of the 18 rivers of the existing channel required only a slight increase of the river bed level and, once the 19 connections were established, the channel was immediately completely impermeable and thus immediately drained. for wastewater / rainwater. Thanks to this, the remaining lower part 1b of the duct 1 to be renovated, the surface of which has already been removed from the corroded, damaged surface and has been cleaned by a high-pressure jet of water, can thus be prevented from such that the filling (6) and the cleaned (concrete) surface of the lower part (lb) can be perfectly bonded, solidly bonded, the injection material penetrates into all gaps and cavities, and fills the space with complete safety, which .

In the next phase of the renovation operation, on the two sides of the lower part of the channel lb, the (reinforced) concrete foundation bodies 2a, 2b are constructed, the lower level of which is aligned with the lower plane of the lower part lb. As can be seen from Figure 1, this requires relatively little earthwork, no formwork or grabs, or at most exceptionally required, with basal depths generally not exceeding 30-50 cm. In the base bodies 2a, 2b, an upwardly extending iron assembly 4 is embedded therein. Instead of the dismantled upper part la of the existing channel, the upper parabolic wall 7 of the renovated channel is made of reinforced concrete arches 7a, 7b, which are supported on these base bodies 2a, 2b, with a waterproof connection 20 on a larger scale. . It can be seen that in terms of its nature and the materials used it is exactly the same as the waterproofing connection 19, but the structural dimensions are obviously larger for the waterproofing connection 20: here the thickness v = 150 mm, the elastically deformable the longitudinal sealing strip 9 having a width b of 40 mm and a thickness of 25 mm, having a tension-centering plate width of 70 mm and a total thickness ν 'of 8 mm; According to the latter value, the gap 9a is also wider than the gap 12a of Figure 3, and the extension p of the tension-centering plate 11 also corresponds to the depth of the gap 9a. (Note that the above dimensions are exemplary only.) The connection mechanism is the same as described with reference to Figure 3: the prefabricated member 7b is pushed to the previously mounted and supported prefabricated member 7a, after both the gap 9a and the stainless tensioning plate 11 made of steel was placed in the geometric center plane x; the latter penetrating into the gap 9a of the rubber sealing member 9, expanding the resiliently deformable sealing member 9 and creating a perfect water-tight connection 20 (Fig. 1). The transverse connections between adjacent, successive prefabricated elements 7a, 7b, through which the longitudinal watertight connection 20 passes without interruption, are likewise formed by a dashed line in Figures 1 and 4 and designated by reference numeral 20a.

Returning to the connection 10 between the prefabricated elements 7a, 7b and the base bodies 2a, 2b, this is illustrated in greater detail in Figure 4 (detail C in Figure 1). According to this, a longitudinal trough 16 (receiving trough) formed by a steel U profile (preferably U 50 steel) extending with its legs upwards on the upper surface of the base body 2b, in which the prefabricated reinforced concrete element 7b has a trapezoidal section with its longitudinally extending sole 15 ("nose") from which the planar sole surfaces 7b 'on both sides are supported on the upper plane of the base body 2b. Prior to the placement of the prefabricated member 7b, the trough 16 is filled with sealant, such as a commercially available sealant known as NIKETON; the seal 17 formed automatically by placing the prefabricated elements 7a, 7b with the sole 15 thus provides a watertight connection 10 between the base body 2b and the prefabricated element 7b.

It can be clearly seen in Fig. 1 that the new top wall 7 with parabolic profile is significantly larger than the dismantled upper part 1a of the duct to be renovated, both laterally and in height; there are practical considerations and conditions (such as utility lines over the canal) that limit the gauge extension. The possibility of lateral widening is essential, since on the one hand the heights of the heights - at least to a greater extent - are less frequent, and on the other, the upper masonry 9 resting on the two base bodies 2a, 2b does not rest on the lower, lacerated, aged ; the structurally relieved lower part lb does not receive any load other than the wastewater flowing therefrom, which greatly increases its service life.

The next phase of the buckling reconstruction operation is the construction of the longitudinal beams 3a, 3b between the plinth portion of the upper masonry 7 and the slab portions of the liner 5 projecting upwardly on the upper surface of the lower portion lb, horizontally or slightly inwards. , arrows) extend outwardly at their upper ends with a flange 5a ', 5b'. The pads 3a, 3b are constructed of a post-curing material, preferably a waterproof concrete or mortar made of fine particulate additive; the material 4 is inserted into the material, so that static co-operation is ensured between the base bodies 2a, 2b and the inwardly sloping benches 3a, 3b. The upper surfaces of the flanges 5a ', 5b' and the pads 3a, 3b extend in a common plane. However, if required by static or other considerations, the flanges 5a ', 5b' may be bonded to the material of the pads 3a, 3b, or the lining members 5a, 5b may have laterally extending connecting plates under the flanges to increase the stability of the flow structure.

After making the pads 3a, 3b, or in parallel with this operation, we prepare the monolith below

Longitudinal lateral bases 8a, 8b, which support the lower ends of this masonry and are supported on the base bodies 2a, 2b and have their upper plane in the same or substantially the same plane 3a, 3b with upper surface of the benches The plinths 8a, 8b and the pads 3a, 3b, of course, increase the water-tightness of the connection 10.

In Fig. 1, T / 'denotes the height of the section of the original channel and D' below the inner width, while the height of the rebuilt channel is H and the lower inner width is indicated by the reference letter D at the height of the benches 3a, 3b. The width increase achieved using the renovation technology of the present invention is generally £) = 1.5-18.Z) and the average height gain achievable is // = 1.3-1.5 .// '. Figure 5 shows the increase in the wetted cross-sectional area, which may be 50-80%, corresponding to an increase in the drainage capacity of the renovated canal.

Advantageous effects associated with the invention are as follows.

In a city-cluttered urban road network, the reconditioning operation does not require more space than known technologies of this kind. Reconstruction of collectors and main collectors takes place on the existing route with minimal use of public space, in most cases there is no need to relocate existing utility lines. As a result of the technology according to the invention, during the reconstruction, the drainage is carried out in the partially renovated channel drain itself, there is no need for diversion, temporary pipeline construction, sewage pumping, in other words, the sewer operates smoothly during the reconstruction. In addition to the trail, the wiring levels remain unchanged; the renovation of the home connection lines, the insertion of smaller river elements into the existing sewer can be done from the open trenches without further demolition. The implementation is quick, and the technology itself is short and simple (placement of prefabricated elements, creation of waterproofing connections by simple assembly) can be followed by short breaks. With the technology, the channel section is left unloaded, and the reinforcement of the channel is largely in line with the needs. One of the greatest advantages of the invention is, of course, the gauge expansion achieved by the renovation, with a relatively small increase in the upper section, and thus a very significant increase in drainage capacity of 50-80%; the hydraulic properties of the gauge to be retrofitted are significantly better than the original, so the new gutter can be used to discharge maximum rainwater masses as well. The abrasion resistance of polymeric concrete riverbeds is significantly higher than that of fiberglass reinforced polyester sheets, and these elements are impermeable and affordably priced. The inevitable wear and tear over time will not adversely affect the static stability of the channel and the usability of the channel. The parabolic masonry that forms the upper part of the channel is made of prefabricated reinforced concrete elements, the high quality of which is guaranteed by this manufacturing technology. Due to all these factors, very long channel life can be expected.

The invention is, of course, not limited to the method of embodiment described above, but within the scope defined by the claims.

Claims (10)

PATENT CLAIMS A method for reconstructing a crawling or walkable channel in which the channel (1) is exposed, the upper portion (1a) preferably disposed above the shoulder is formed, and the remaining lower portion (lb) is formed from a watertight shell element (5) filling the gap with a curing agent by injection; instead of the dismantled upper part (1a) of the channel, a wall (7) sealing the lower part (1b) containing the channel (18) is provided, characterized in that the base bodies (2a, 2b) extending longitudinally along the two sides of the lower part (1b). and making the masonry (7) with prefabricated reinforced concrete elements (7a, 7b) which reside on the base bodies (2a, 2b) and are connected to them by means of watertight connections (10). Method according to claim 1, characterized in that longitudinal pads (3a) of post-solidifying material, preferably made of waterproofing material, between the legs of the lining (5) extending over the upper edge of the lower part of the channel (1b) and the lower ends of the upper masonry (7). 3b). Method according to Claim 2, characterized in that the base bodies (2a, 2b) and the benches (3a) are embedded in the base bodies (2a, 2b) and extend upwards from them to the benches (3a, 3b). , 3b) establishes static collaboration relationships. 4. A method according to any one of claims 1 to 5, characterized in that the liner (5) is formed from liner elements (5a, 5b) extending outwardly from the stem ends and flanged (5a ', 5b') in line with the inwardly sloping surface of the boards (3a, 3b). 5. A method according to any one of claims 1 to 5, characterized in that the liner (5) is constructed of curved, prefabricated polymeric concrete, preferably of quartz sand and polyester resin concrete liner elements (5a, 5b), such that the lining member (5a, 5b) forming a section of the liner (5) is connected to one another by a longitudinal watertight connection (19) in its lowest region, and the successively arranged lining members (5a, 5b) are also connected to each other by watertight transverse connections. Method according to claim 5, characterized in that the longitudinal watertight connection (19) between adjacent liner elements (5a, 5b) - and preferably also the transverse watertight connections between successive liner elements (5a, 5b) - is one of the liner elements. (5b) a lower, preferably lower, preferably lining member (5a) of the other lining member (5a), which is integrated in and extends from its lower, preferably thickened end portion (5b); It is formed by pressing or / and pulling it into a gap (12a) formed of a resiliently deformable material, preferably made of rubber, in the thickened end portion thereof, whereby the sealing member (12) is pressurized. 7. A method according to any one of claims 1 to 5, characterized in that the masonry (7) forming the upper part of the channel is made of prefabricated elements (7a, 7b) of curved reinforced concrete, in that the sections of two masonry masonry (9) forming a prefabricated element (7a, 7b) in its uppermost region by means of a longitudinal watertight connection (20), and successively arranged longitudinally arranged masonry prefabricated elements (7a, 7b) are also connected to each other by watertight transverse connections. Method according to claim 7, characterized in that the longitudinal watertight connection (20) between adjacent reinforced concrete masonry prefabricated elements (7a, 7b) - and preferably transverse watertight between successive prefabricated elements (7a, 7b). joints - in an elastic deformable material, preferably made of rubber, in an upper end portion of one prefabricated element (7b) and extending therefrom a longitudinal tension-centering plate (11) extending therefrom into the upper end portion of another masonry prefabricated element (7a). ) by pressing or / and pulling it into the formed gap (9a) thereby applying pressure to the sealing element (9). 9. Method according to any one of claims 1 to 3, characterized in that the watertight connections (10) between the masonry prefabricated elements (7a, 7b) and the base bodies (2a, 2b) are formed by longitudinally extending, preferably steel, in the base bodies (2a, 2b). The troughs (16) formed by concreting U-profiles are filled with a watertight mass securing a seal (17) and the prefabricated elements (7a, 7b) are inserted into the troughs (7a, 7b) with their longitudinal ribs (15) extending from their base and narrower than the width of the trough (16). ). 10. Method according to any one of claims 1 to 3, characterized in that the longitudinal longitudinal planes (3a, 3b) which reside on the bases (2a, 2b), extend along the outer side of the masonry prefabricated elements (7a, 7b) and extend parallel to the masonry. making concrete or reinforced concrete bases (8a, 8b). HU 222 897 Β1 Int.Cl. ⁷ : E03F 3/06 HU 222 897 Bl Int.Cl. ⁷ : E03F 3/06 Figure 2 HU 222 897 Bl Int Cl ⁷ : E03F 3/06 Figure 3 HU 222 897 Bl Int.Cl. ⁷ : E03F 3/06