EP0669192B1 - Verfahren und Vorrichtung zur Herstellung eines Stahlbetonvortriebsrohres - Google Patents
Verfahren und Vorrichtung zur Herstellung eines Stahlbetonvortriebsrohres Download PDFInfo
- Publication number
- EP0669192B1 EP0669192B1 EP19950102399 EP95102399A EP0669192B1 EP 0669192 B1 EP0669192 B1 EP 0669192B1 EP 19950102399 EP19950102399 EP 19950102399 EP 95102399 A EP95102399 A EP 95102399A EP 0669192 B1 EP0669192 B1 EP 0669192B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pipe
- support platform
- steel collar
- concrete
- reinforced concrete
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/76—Moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/56—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts
Definitions
- the invention relates to a method for manufacturing a reinforced concrete jacking pipe according to the preamble of the claim 1 and also includes a device for performing of the method according to the preamble of the claim 6 a.
- Reinforced concrete jacking pipes are in the state of the art in horizontal centrifugal process.
- a hollow cylindrical rotatingly driven around a horizontal axis Steel form through a so-called snorkel band concrete introduced, which then by a correspondingly high speed of the Shape as it is distributed and compacted in a centrifuge.
- the mold is stored for several hours, with the Concrete hardening can be accelerated by vapor deposition.
- the finished pipe can only take about six to seven hours to finish of the form.
- the invention is based, a method and a task device particularly suitable for carrying out the process provide with his or her help very true to size Reinforced concrete jacking pipes can be produced in a short time and good quality are.
- the method according to the invention allows the production of Reinforced concrete jacking pipes in the vertical radial pressing process, so far only with the production of reinforced concrete pipes Bell sleeve was used. This is the fresh concrete in contrast to the axial compression of others vertically working processes by coreless pressing in the radial direction by rotating press tools using free-running press jaws and / or rollers compressed radially and smoothed.
- Particularly short production cycle times can be used achieve the method according to the invention when the tube production takes place on a turntable, which, for example has two stations for receiving the pipe formwork. Thereby can be used during the concreting process of one pipe Time the other concrete pipe has already been stripped, together with the support platform by means of an indoor crane lifted off the turntable, set down on the drying line and the now free station on the turntable for one new pipe according to process steps (a) and (b) to get prepared.
- the drying section can be designed as a conveyor belt and so be dimensioned so that the entire daily production on it Finds space. This drying section can be closed overnight and be heated so that the pipes the next day one for Process step (h) has sufficient strength. The Visible steel parts of the pipes can then be painted with a bitumen be provided.
- the method can be particularly economical according to claim 2 use, if existing in the concrete plant, for vertical Radial pressing process certain formwork for reinforced concrete pipes can be used with bell socket. In this case there is no need to manufacture special formwork. Otherwise you can in the area of the given length (height) of the formwork in the concrete plant Tubes of any length are made, in particular in the range between approx. 2.00 and 4.50 m with inner diameters between about 1.00 and 3.00 m. Pipes with larger Lengths and diameters for the manufacture of which the invention Procedures are quite suitable, are useful on Manufacture location in field factories because of the transportation of such Pipes on public roads with significant problems connected is.
- Claims 3 and 4 specify two possible alternatives, both of which are a safe and location-defined stopping of the Steel sleeve with welded reinforcement cage on the Allow support platform according to process feature (b). Both alternatives, but especially the one according to claim 4 also prevent the fresh concrete from sagging the concreting because the ring sectors according to claim 3 and better nor the closed ring according to claim 4 the lower Support or form the end face of the tube directly. On this way also any committee due to deformations at the lower end of the tube and the need for manual reworking minimized. In addition, ensure large areas Ring sectors and better still a closed ring that the Pipe installation through jacking a more even force distribution reached on the pipe end. This is particularly advantageous for cornering or gradient drives.
- the inventive method for producing a reinforced concrete jacking pipe appropriately uses only concrete quality class B II and strength class B 45 as waterproof Concrete.
- An unbroken one comes as a surcharge Grain of the fractions 0-16 mm is used, which meets all requirements the DIN 4226 "surcharge for concrete", part 1, fulfilled.
- a grain composition is used that is easy to process and is compactible, has a low water content (consistency KS) and has a minimum of voids in hardened concrete.
- the concrete is prepared with such a cement that in addition to high early strength, high final strength is guaranteed.
- the formwork is as Bell socket pipe formwork shown as for vertical Use in the manufacture of bell socket concrete pipes is used. It therefore has an elongated upper one hollow cylindrical section 2 and a lower extended Bell socket formwork section 3.
- the formwork 1 is in FIG. 3 with its lower end on a table or rotary table 4 in shown in a vertical position. All figures illustrate a situation in which the formwork 1 for the The filling of fresh concrete is prepared.
- the upper loading end the formwork 1 and the rotating drivable as well Radial presses that are axially movable within the formwork are not shown because this is from bell socket concrete pipe production known arrangements or devices.
- the bell socket formwork section 3 is used in the exemplary embodiments 1 to 3 in each case essentially from a support platform, generally designated by reference number 5 bridged by the bell socket formwork section 3 centered.
- the two diameters of the reinforced concrete jacking pipe to be manufactured adapted and at least externally circular support platform has two at a distance and parallel to each other aligned plates 6 and 7, which are attached by between Support elements 8 stiffened against each other to withstand high loads and are attached to each other.
- the top plate 6 is from circular, the end face of the reinforced concrete jacking pipe to be manufactured appropriate shape.
- the lower one Plate 7 does not have to be a closed plate, but can also have an inner cutout, for example a circular cutout, creating the plate 7 is also annular, as indicated in Fig. 3.
- the support elements can have any suitable cross-sectional shape, as long as the special strength requirements are met are. 1 and 2, the support elements 8 are made of pipe sections formed while in the embodiment according to Fig.
- the support elements 8 made of plate-shaped vertical elements are composed. For reasons of simplification, in 1 and 2, only a few supporting elements 8 are shown. The The number of support elements corresponds to the strength requirements. Are useful to achieve a uniform resilience the support elements 8 are attached at regular intervals.
- the support platform 5 is with its lower plate 7 on locking elements 9 set off at the lower end of the bell socket formwork section 3 evenly distributed around the circumference are.
- These locking elements 9 are designed so that with their Help the support platform 5 and the formwork 1 optionally with each other can be locked or unlocked from each other.
- the locking elements 9 have to be stripped of the finished reinforced concrete jacking pipe completely from the interior of the bell socket formwork section 3 be removable so the formwork 1 can be lifted off.
- the locking elements as shown in Fig. 3, designed as a rotary bolt be. These engage through recesses 10 in the wall of the bell socket formwork section 3 and are on vertically mounted pivot pin 11 attached.
- Pivot bolts 11 are fastened to the formwork by Consoles 12 rotatably guided.
- the arrangement can be made in this way be that to unlock or lock all on the circumference distributed pivot pin 11 and thus the pivot pin 11 rigidly and non-rotatably connected locking elements 9 operated simultaneously.
- Fig. 1 is a concentrically inserted into the formwork 1
- Pipe reinforcement cage 14 indicated.
- the lower end of the pipe reinforcement cage 14 is attached to it by weld anchors hollow cylindrical steel sleeve 15 provided Outside diameter the outside diameter of the reinforced concrete jacking pipe corresponds.
- the pipe reinforcement cage 14 and the steel sleeve 15 are attached to each other in a concentric position.
- the upper plate 6 of the support platform 5 has an outer diameter, for centering the inside diameter the steel sleeve 15 is formed.
- the outer diameter of the steel sleeve 15 is somewhat smaller than the inner diameter of the hollow cylindrical portion 2 of the Formwork 1, so that the steel sleeve 15 in the axial direction is movable within the formwork 1.
- the steel sleeve 15 is due to the reinforced concrete jacking pipe the embedding of the reinforcement cage 14 in the concrete mass Part of the concrete pipe.
- radial projections rigidly attached, preferably by welding with which the reinforcement cage and on it attached steel sleeve 15 to the upper plate 6 of the support platform 5 is discontinued.
- the radial projections must therefore be dimensioned and fastened so that they have the total weight can carry the finished reinforced concrete jacking pipe.
- the purpose is at least three stop-like radial projections 16 evenly distributed over the circumference on the inner wall of the Steel sleeve 15 attached.
- the radial projections 16 or 16 ' ensure that the lower end of the steel sleeve 15 is freely suspended on the support platform 5, i.e. is not supported from below.
- the axial Height of the support platform 5 is greater than that over the end face of the concrete pipe to be manufactured or via the radial projections 16 or the radial ring sectors or the ring 16 ' protruding axial length of the steel sleeve 15.
- the support platform is 5 of different heights. While they are in Fig. 1 and 2 with its upper plate 6 axially into the lower end of the hollow cylindrical section 2 of the formwork 1, In the example according to FIG. 3, it ends within the Bell socket formwork section 3.
- the height of the support platform 5 must, however, be matched to the axial length of the steel sleeve 15 in such a way that the steel sleeve 15 after settling on the Support platform 5 is still centered at least with its upper end remains in the hollow cylindrical section 2 of the formwork 1, as shown in Fig. 3. While it is generally support platforms of different heights are not required 5, but are different Pipe diameter of support platforms adjusted accordingly in diameter to provide.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Description
- Fig. 1
- einen abgebrochenen Schnitt durch das untere Ende einer Glockenmuffenrohrschalung mit Stützplattform und darauf abgesetztem Bewehrungskorb mit Stahlmanschette,
- Fig. 2
- einen der Fig. 1 ähnlichen abgebrochenen Schnitt bei einer modifizierten Ausführung der Stahlmanschette und
- Fig. 3
- einen der Fig. 2 ähnlichen Schnitt, jedoch in einem vergleichsweise größeren Maßstab zur Veranschaulichung weiterer Einzelheiten der Vorrichtung dargestellt.
Claims (9)
- Verfahren zur Herstellung eines Stahlbetonvortriebsrohres, das an seinem einen Ende mit einer angeformten und am Rohrbewehrungskorb befestigten hohlzylindrischen Stahlmanschette versehen ist, die axial über die betreffende Rohrstirnfläche übersteht und deren Außendurchmesser dem Rohraußendurchmesser entspricht,
dadurch gekennzeichnet, daß(a) der Bewehrungskorb in eine senkrechte Stellung mit unten befindlicher Stahlmanschette gebracht wird,(b) der Bewehrungskorb mit an der Innenwand der Stahlmanschette befestigten radialen Vorsprüngen auf eine in die Stahlmanschette eingreifende, horizontal ausgerichtete und außen kreisförmige Stützplattform abgesetzt wird, wobei das untere Ende der Stahlmanschette freihängend nicht gestützt wird,(c) die die Rohraußenwand formende Schalung von oben unter Aufnahme des Bewehrungskorbs und Zentrierung durch die Stahlmanschette bis zur festen stationären Auflage ihres unteren Endes außerhalb der Stützplattform aufgesetzt wird,(d) worauf in das obere offene Ende der Schalung Frischbeton fortlaufend eingefüllt wird,(e) der Beton zur Bildung des unteren Rohrendbereichs durch über die Stützplattform von unten übertragene Rüttelschwingungen verdichtet wird,(f) der Beton durch innerhalb der Schalung rotierend angetriebene Preßwerkzeuge an der Innenwandfläche der Schalung verteilt und in radialer Richtung verdichtet und zur Bildung der Rohrinnenwandfläche geglättet wird, wobei die Preßwerkzeuge nach Maßgabe der von unten nach oben fortschreitenden Rohrbildung kontinuierlich nach oben bewegt werden,(g) nach Beendigung des Betoniervorgangs die Schalung nach oben von dem fertigen Rohr abgezogen wird und(h) schließlich das fertige Rohr nach dem Aushärten des Betons von der Stützplattform abgehoben und in eine liegende Stellung gebracht wird. - Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß als Schalung die für Stahlbetonrohre mit Glockenmuffe übliche Rohrschalung verwendet wird, in welche die Stützplattform die axiale Länge des Glockenmuffenschalungsabschnitts überbrückend bis etwa in den an den Muffenbereich anschließenden gleichbleibend zylindrischen Bereich von unten hineinreicht.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die an der Innenwand der Stahlmanschette befestigten radialen Vorsprünge als in einer gemeinsamen rechtwinklig zu der Rohrachse ausgerichteten Ebene befindliche an die Stahlmanschette angeschweißte Ringsektoren ausgebildet sind, die auf der Stützplattform in Flächenanlage abgesetzt werden.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die an der Innenwand der Stahlmanschette befestigten radialen Vorsprünge als geschlossener mit der Stahlmanschette durch Schweißung verbundener Ring ausgebildet sind, der sich in einer rechtwinklig zur Rohrachse ausgerichteten Ebene befindet und auf die Stützplattform in Flächenanlage abgesetzt wird.
- Verfahren nach mindestens einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Schalung mit der Stützplattform vor Einfüllung des Frischbetons verriegelt und vor dem Abziehen der Schalung von dem fertigen Rohr entriegelt wird.
- Vorrichtung zur Durchführung des Verfahrens zur Herstellung eines Stahlbetonvortriebsrohres, das an seinem einen Ende mit einer angeformten und am Rohrbewehrungskorb (14) befestigten hohlzylindrischen Stahlmanschette (15) versehen ist, die axial über die betreffende Rohrstirnfläche übersteht und deren Außendurchmesser dem Rohraußendurchmesser entspricht, mit einer im wesentlichen hohlzylindrischen zur senkrechten Verwendung ausgebildeten Schalung (1) und einer rotierend antreibbaren und axial innerhalb der Schalung (1) bewegbaren Radialpresse, dadurch gekennzeichnet, daß eine den beiden Durchmessern des Stahlbetonvortriebsrohres angepaßte außen kreisförmige Stützplattform (5) vorgesehen ist, deren Außendurchmesser zur zentrierenden Aufnahme des überstehenden Bereichs der Stahlmanschette (15) ausgebildet ist, deren axiale Höhe größer ist als die überstehende axiale Länge der Stahlmanschette (15), deren Bodenauflagefläche in ihren Außenabmessungen kleiner ist als der Innendurchmesser des unteren Endes der Schalung (1), wobei die Bodenauflagefläche der Stützplattform (5) zur Anlage an eine Rütteleinrichtung (17) ausgebildet ist.
- Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß die Schalung (1) eine Glockenmuffenrohrschalung ist, deren Glockenmuffenschalungsabschnitt (3) die Stützplattform (5) zentrierend aufnimmt.
- Vorrichtung nach Anspruch 6 oder 7, dadurch gekennzeichnet, daß die Stützplattform (5) zwei mit Abstand und planparallel zueinander ausgerichtete Platten (6, 7) aufweist, die durch dazwischen befestigte Stützelemente (8) gegeneinander hochbelastbar ausgesteift und aneinander befestigt sind, wobei die obere Platte (6) von kreisringförmiger, der Rohrstirnfläche entsprechender Gestalt ist.
- Vorrichtung nach mindestens einem der Ansprüche 6 bis 8, dadurch gekennzeichnet, daß zwischen Stützplattform (5) und Schalung (1) wirksame Riegelelemente (9) od.dgl. gleichmäßig am Umfang verteilt angeordnet sind, mit welchen Stützplattform (5) und Schalung (1) wahlweise miteinander verriegelbar oder voneinander entriegelbar sind.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19944405700 DE4405700C1 (de) | 1994-02-23 | 1994-02-23 | Verfahren und Vorrichtung zur Herstellung eines Stahlbetonvortriebsrohres |
DE4405700 | 1994-02-23 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0669192A1 EP0669192A1 (de) | 1995-08-30 |
EP0669192B1 true EP0669192B1 (de) | 1998-10-07 |
Family
ID=6510913
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19950102399 Expired - Lifetime EP0669192B1 (de) | 1994-02-23 | 1995-02-21 | Verfahren und Vorrichtung zur Herstellung eines Stahlbetonvortriebsrohres |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0669192B1 (de) |
DE (1) | DE4405700C1 (de) |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3922133A (en) * | 1973-03-28 | 1975-11-25 | Concrete Pipe Machinery Co | Pipe forming packerhead apparatus with spigot end pressing means |
DE2741246C2 (de) * | 1977-09-14 | 1981-09-10 | Georg Fischer AG, 8201 Schaffhausen | Vorrichtung und Verfahren zum Herstellen von Rohren |
US4614324A (en) * | 1983-05-07 | 1986-09-30 | Nippon Pressed Concrete Co., Ltd. | Mold for producing concrete pipe |
GB2193679B (en) * | 1986-08-14 | 1989-12-20 | F C Precast Concrete Ltd | Concrete pipes |
-
1994
- 1994-02-23 DE DE19944405700 patent/DE4405700C1/de not_active Expired - Fee Related
-
1995
- 1995-02-21 EP EP19950102399 patent/EP0669192B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0669192A1 (de) | 1995-08-30 |
DE4405700C1 (de) | 1995-09-21 |
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