DE1559035B1 - Inner pneumatic formwork for the production of pipelines or channels from concrete with a cross-section deviating from the circular shape - Google Patents

Inner pneumatic formwork for the production of pipelines or channels from concrete with a cross-section deviating from the circular shape

Info

Publication number
DE1559035B1
DE1559035B1 DE19651559035 DE1559035A DE1559035B1 DE 1559035 B1 DE1559035 B1 DE 1559035B1 DE 19651559035 DE19651559035 DE 19651559035 DE 1559035 A DE1559035 A DE 1559035A DE 1559035 B1 DE1559035 B1 DE 1559035B1
Authority
DE
Germany
Prior art keywords
cross
pipelines
section
channels
formwork
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.)
Pending
Application number
DE19651559035
Other languages
German (de)
Inventor
Constantin Cosmescu
Alexandru Ionescu
Vasile Luca
Gheorghe Runceanu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MINI IND CONSTRUCTILLOR
Original Assignee
MINI IND CONSTRUCTILLOR
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by MINI IND CONSTRUCTILLOR filed Critical MINI IND CONSTRUCTILLOR
Publication of DE1559035B1 publication Critical patent/DE1559035B1/en
Pending legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G11/00Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/04Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for structures of spherical, spheroid or similar shape, or for cupola structures of circular or polygonal horizontal or vertical section; Inflatable forms
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G11/00Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/04Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for structures of spherical, spheroid or similar shape, or for cupola structures of circular or polygonal horizontal or vertical section; Inflatable forms
    • E04G11/045Inflatable forms
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G15/00Forms or shutterings for making openings, cavities, slits, or channels
    • E04G15/06Forms or shutterings for making openings, cavities, slits, or channels for cavities or channels in walls of floors, e.g. for making chimneys
    • E04G15/063Re-usable forms
    • E04G15/066Re-usable forms with fluid means to modify the section

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Lining And Supports For Tunnels (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)

Description

Die Erfindung bezieht sich auf eine innere pneumatische Schalung, wie sie bei der Herstellung von Rohrleitungen oder Kanälen aus unbewehrtem oder bewehrtem Beton benutzt wird, wobei der Innenquerschnitt eine Kurvenform besitzt, wie z. B. eine Eiform, eine elliptische Form usw., die von der Kreisform abweicht.The invention relates to an inner pneumatic formwork, as used in the manufacture of pipelines or ducts from unreinforced or reinforced concrete is used, the inner cross-section being curved, such as B. an egg shape, an elliptical shape, etc., which deviates from the circular shape.

Pneumatische Schalungen aus biegsamem, hiftundurchlässigem Textihnaterial, z. B. aus gummierter Leinwand, welche in aufgeblasenem Zustand eine ausreichende Steifigkeit besitzen, um die innere Schalung zu bilden, sind an sich bekannt. Sie werden zum Herstellen von Rohrleitungen und Kanälen aus unbewehrtem oder bewehrtem Beton benutzt. Im aufgeblasenen Zustand haben diese Schalungen einen kreisförmigen Querschnitt, so daß sie lediglich zum Herstellen von Rohrleitungen oder Kanälen mit kreisförmigem Innenquerschnitt benutzt -werden können. Nachdem der Beton oder. eine, andere formbare Masse, zwischen die aufgeblasene Schalung und einen äußeren festen Formteil gefüllt worden und darin genügend hart geworden ist, wird das Druckmittel aus der inneren Schalung abgelassen, die dann aus der Höhlung des gegossenen Gegenstandes herausgezogen und wieder benutzt werden kann. Das Herstellen langer Kanäle erfolgt schrittweise, wobei die Schalung für jeden neuen Kanalabschnitt zunächst entleert, um eine gewisse Strecke vorbewegt und dann wieder aufgeblasen werden muß.Pneumatic formwork made of flexible, non-permeable textile material, e.g. B. made of rubberized canvas, which when inflated have sufficient rigidity to form the inner formwork, are known per se. They are used to manufacture pipelines and channels from unreinforced or reinforced concrete. In the inflated state, these formworks have a circular cross-section, so that they can only be used to produce pipelines or ducts with a circular internal cross-section. After the concrete or . another malleable mass, has been filled between the inflated formwork and an outer solid molded part and has become sufficiently hard therein, the pressure medium is drained from the inner formwork, which can then be pulled out of the cavity of the cast object and used again. Long ducts are produced step by step, the formwork having to be first emptied for each new duct section, moved forward a certain distance and then inflated again.

Es ist zur Herstellung von unrunden Rohrleitungen oder Kanälen aus Beton auch schon vorgeschlagen worden, den Innenquerschnitt durch mehrere einander längsseits berührende Schläuche od. dgl. nachzubilden. Die gesamte InnenfQrm wird also aus mehreren Schläuchen zusammengesetzt, die in einer entsprechenden Hülle enthalten sind und separat aufblasbar sind.It is made for the production of non-circular pipes or ducts Concrete has also already been proposed, the internal cross-section through several one another to simulate hoses or the like touching alongside. The entire InnenfQrm is thus composed of several hoses, which are in a corresponding cover are included and are separately inflatable.

Diese aus einer Vielzahl von Teilen bestehenden Innenformen sind naturgemäß relativ teuer und im Betrieb umständlich, da alle Teilschläuche getrennt aufgeblasen und dichtgehalten werden müssen. Hiervon abgesehen ist es schwierig, auf die bekannte Weise tatsächlich den jeweils gewünschten Querschnitt richtig nachzubilden.These inner shapes, which consist of a large number of parts, are natural relatively expensive and cumbersome to operate, since all partial tubes are inflated separately and must be kept tight. That being said, it's difficult to familiarize yourself with Way to actually reproduce the desired cross-section correctly.

Penigegenüber besteht die Aufgabe der Erfindung darin, eine möglichst einfache emistückige pneumatische Innenschalung zu schaffen. Die Lösung dieser Aufgabe besteht gemäß der Erfindung darin, daß im Inneren der Hülle die Seitenwände miteinander verbindende, parallel zueinand r de - e r gfflen Umge nach verlaufende Abstandshaltestreifen aus biegsamem, nic ht dehnbarem Textilmaterial angeordnet sind, deren Breite dein jeweiligen Innenquerschnitt der Rohrleitung od.,dgl. entspricht, Durch entsprechende Breite der erfindungsgemäßen flexiblen Abstandhaltestreifen nimmt die Hülle beim Aufblasen die vorgesehene Form an. Auf diese Weise wird der besonders geformte Innenquerschnitt der Rohrleitungen od. dgl., abweichend vom kreisförmigen Innenquerschnitt, hergestellt und aufrechterhalten (elliptisch, eiförmig usw.).In contrast, the object of the invention is to create the simplest possible single-piece pneumatic inner formwork. The solution to this problem is according to the invention that in the interior of the shell connecting the side walls with each other, parallel to each other r de - he gfflen vice versa are arranged spacer strips made of flexible, non-stretchable textile material, the width of which corresponds to the respective inner cross-section of the pipeline or. , like. Corresponds to, due to the corresponding width of the flexible spacer strips according to the invention, the envelope assumes the intended shape when inflated. In this way, the specially shaped inner cross-section of the pipelines or the like, deviating from the circular inner cross-section, is produced and maintained (elliptical, egg-shaped, etc.).

Ein Ausführungsbeispiel der Erfindung wird nachstehend an Hand der Zeichnung näher erläutert. Es zeigt F i g. 1 einen vertikalen Längsschnitt durch eine erfindungsgemäße Schalung, F i g. 2 einen Querschnitt durch die Schalung. Die erfindungsgemäße Schalung besteht aus einem rohrförmigen Mantel 1 aus einem biegsamen, luftundurchlässigen Textilmaterial, z. B. aus gummierter Leinwand, in zwei Schichten von etwa 2 bis 8 min Gesamtstärke, je nach dem Umfang. Der Mantel 1 endet an beiden Enden mit konischen Teilen, von denen einer zum Ein- und Ausblasen der Luft vorgesehen ist. An,diesem Mantel sind -über die gesamte Innenfläche verteilt eine Anzahl Abstandhaltestreifen 2, aus biegsamem Textilmaterial, z. B. aus Leinwand, vorzugsweise siebartig, angeordnet. Diese Abstandhaltestreifen 2 legen, wenn der Mantel 1 durch komprimierte Luft mit einem Druck von 0,2 bis 0,3 atü aufgeblasen wird, den Abstand fest, um den sich die Mantelwände auswärts bewegen können, so daß der eiförmige Querschnitt der Schalung mit den Krümmungsradien R und R, hergestellt und aufrechterhalten wird.An embodiment of the invention is explained in more detail below with reference to the drawing. It shows F i g. 1 shows a vertical longitudinal section through a formwork according to the invention, FIG . 2 shows a cross section through the formwork. The formwork according to the invention consists of a tubular jacket 1 made of a flexible, air-impermeable textile material, for. B. made of rubberized canvas, in two layers of about 2 to 8 minutes total thickness, depending on the extent. The jacket 1 ends at both ends with conical parts, one of which is provided for blowing the air in and out. On this jacket are a number of spacer strips 2 distributed over the entire inner surface, made of flexible textile material, e.g. B. made of canvas, preferably like a sieve, arranged. When the jacket 1 is inflated by compressed air to a pressure of 0.2 to 0.3 atmospheres, these spacer strips 2 determine the distance by which the jacket walls can move outwards, so that the egg-shaped cross-section of the formwork with the radii of curvature R and R, is established and maintained.

Je nach Breite, Lage und Anzahl der Abstandshaltestreifen 2 wird der von dem kreisförmigen Querschnitt abweichende Innenquerschnitt der pneumatischen Schalung festgelegt.Depending on the width, position and number of spacer strips 2, the Inner cross-section of the pneumatic one deviating from the circular cross-section Formwork set.

Claims (1)

Patentanspruch: Innere pneumatische Schalung zum Herstellen von Rohrleitungen oder Kanälen aus unbewehrtem oder bewehrtem Beton mit einem von der Kreisfonn abweichenden Innenquerschnitt, bestehend aus einer Hülle aus einem biegsamen, nicht dehnbaren, luftundurchlässigen Textilmaterial, dadurch gekennzeichnet, daß im Inneren der Hülle (1) die Seitenwände miteinander verbindende, parallel zueinander der Länge nach verlaufende Abstandshaltestreifen (2) aus biegsamem, nicht dehnbarem Textilmaterial angeordnet sind, deren Breite dem jeweiligen Innenquerschnitt der Rohrleitung od. dgl. entspricht.Claim: Inner pneumatic formwork for the production of pipelines or channels from unreinforced or reinforced concrete with an inner cross-section deviating from the circular shape, consisting of a shell made of a flexible, non-stretchable, air-impermeable textile material, characterized in that inside the shell (1) the Spacer strips (2) made of flexible, non-stretchable textile material, the width of which corresponds to the respective inner cross-section of the pipeline or the like, which connect side walls to one another and run parallel to one another lengthwise, are arranged.
DE19651559035 1965-11-22 1965-11-22 Inner pneumatic formwork for the production of pipelines or channels from concrete with a cross-section deviating from the circular shape Pending DE1559035B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM0067348 1965-11-22

Publications (1)

Publication Number Publication Date
DE1559035B1 true DE1559035B1 (en) 1970-04-02

Family

ID=7312166

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19651559035 Pending DE1559035B1 (en) 1965-11-22 1965-11-22 Inner pneumatic formwork for the production of pipelines or channels from concrete with a cross-section deviating from the circular shape

Country Status (1)

Country Link
DE (1) DE1559035B1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3500153A1 (en) * 1985-01-04 1986-07-10 Rudolf Dipl.-Ing. 7000 Stuttgart Bergermann Pneumatic shuttering
DE102019122205A1 (en) * 2019-08-19 2021-02-25 Burkhard Krüger Inflatable formwork
DE102021102201A1 (en) 2021-02-01 2022-08-04 Burkhard Krüger Inflatable formwork with pressure sensor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE855822C (en) * 1946-04-03 1952-11-17 Olof Viktor Dipl-Ing Sjoedin Method and device for molding objects from a moldable mass
DE921830C (en) * 1951-02-17 1954-12-30 Wingfoot Corp Cantilever inflatable structural element made of textile
US3055379A (en) * 1959-07-16 1962-09-25 Elijah C Fink Inflatable tent structure

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE855822C (en) * 1946-04-03 1952-11-17 Olof Viktor Dipl-Ing Sjoedin Method and device for molding objects from a moldable mass
DE921830C (en) * 1951-02-17 1954-12-30 Wingfoot Corp Cantilever inflatable structural element made of textile
US3055379A (en) * 1959-07-16 1962-09-25 Elijah C Fink Inflatable tent structure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3500153A1 (en) * 1985-01-04 1986-07-10 Rudolf Dipl.-Ing. 7000 Stuttgart Bergermann Pneumatic shuttering
DE102019122205A1 (en) * 2019-08-19 2021-02-25 Burkhard Krüger Inflatable formwork
DE102021102201A1 (en) 2021-02-01 2022-08-04 Burkhard Krüger Inflatable formwork with pressure sensor

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