EP0592695A1 - Assembly for prestressed concrete moulded elements - Google Patents

Assembly for prestressed concrete moulded elements Download PDF

Info

Publication number
EP0592695A1
EP0592695A1 EP92117164A EP92117164A EP0592695A1 EP 0592695 A1 EP0592695 A1 EP 0592695A1 EP 92117164 A EP92117164 A EP 92117164A EP 92117164 A EP92117164 A EP 92117164A EP 0592695 A1 EP0592695 A1 EP 0592695A1
Authority
EP
European Patent Office
Prior art keywords
formwork
frame
circulating
concrete
elements
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.)
Withdrawn
Application number
EP92117164A
Other languages
German (de)
French (fr)
Inventor
Frithjof Schimpff
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.)
Wayss and Freytag AG
Original Assignee
Wayss and Freytag AG
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 Wayss and Freytag AG filed Critical Wayss and Freytag AG
Priority to EP92117164A priority Critical patent/EP0592695A1/en
Priority to ES92117164T priority patent/ES2050650T1/en
Publication of EP0592695A1 publication Critical patent/EP0592695A1/en
Withdrawn legal-status Critical Current

Links

Images

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
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/02—Moulds with adjustable parts specially for modifying at will the dimensions or form of the moulded article
    • 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
    • B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
    • B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
    • B28B23/04—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed
    • B28B23/06—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed for the production of elongated articles
    • 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
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/34—Moulds, cores, or mandrels of special material, e.g. destructible materials

Definitions

  • the invention relates to a circulation formwork as described in the preamble of claim 1.
  • Such formwork for prestressed concrete sleepers is described, for example, in the magazine “Bundesbahn” No. 10/1981 p. 844, 3rd column, 2nd paragraph in the article "30 years of concrete sleepers at the Deutsche Bundesbahn". Because of their stiffness required for applying the prestressing, they are very complex and can only be used for a certain finished part - a certain threshold. The high cost of formwork renders the process uneconomical for special sleepers with small quantities, such as those that occur with industrial siding connections or with small municipal or private railway companies.
  • a two-part threshold formwork is known from French published patent application 26 44 722 A1.
  • the lower part covers the side and bottom surfaces of the formwork.
  • a frame is slipped over this, which serves as a tensioning frame and whose tensioning latches simultaneously form the end faces of the threshold formwork.
  • the invention has set itself the task of developing the known sleeper constructions so that within the limits that the tendon abutments set for the length of the finished part, any length of finished parts can be produced without incurring considerable molding costs.
  • the formwork element can be economically manufactured because it is not stressed by the high prestressing forces.
  • casting processes of shaped bodies for example made of wood, and also concrete and plastic can be used as materials, as a result of which the manufacturing process is considerably cheaper, even for relatively complicated shaped bodies.
  • the circulating formwork according to the invention is formed by the frame 1 and the formwork element 4.
  • the frame 1 comprises at the head ends the abutment bars 2 and the longitudinal posts 3, which keep the abutment bars 2 at a distance against the tensioning forces of the tensioning wires 6.
  • Each frame 1 encloses with bars 2 and posts 3 at least one field (in the examples shown there are two fields) into which a formwork element 4 can be inserted.
  • the formwork element 4 is held on the outside by the frame 1 and forms the finished part 5 with its inner contour 7.
  • 5 shows a frame 1 with bars 2 and posts 3 and devices 9 according to claim 10 designed according to claim 9 with inclined inner sides 8 and holding the formwork element 4 detachably in the frame 1.
  • an oarlock 9 is shown as a holding device.

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)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)

Abstract

To allow circulating formworks for prefabricated concrete elements - principally for railway sleepers - with prestressing with an immediate bond to be used economically and for small series, it is proposed to construct the formwork from a rigid frame (1) absorbing the stress forces of the prestressing wires (6) and from a formwork element which is inserted in said frame (1) and serves only for shaping the prefabricated part (5). <IMAGE>

Description

Die Erfindung betrifft eine Umlaufschalung wie sie im Oberbegriff des Anspruchs 1 beschrieben ist. Derartige Schalungen sind für Spannbetonschwellen beispielsweise in der Zeitschrift die "Bundesbahn" Nr. 10/1981 S. 844, 3. Spalte, 2. Abs. im Artikel "30 Jahre Betonschwellen bei der Deutschen Bundesbahn" beschrieben. Sie sind wegen ihrer notwendigen Steifigkeit für das Aufbringen der Vorspannung sehr aufwendig und nur für ein bestimmtes Fertigteil - eine bestimmte Schwelle - einsetzbar. Der hohe Schalungskostenaufwand macht das Verfahren für Spezialschwellen mit geringen Stückzahlen, wie sie beispielsweise bei industriellen Nebengleisanschlüssen oder bei kleinen kommunalen oder privaten Bahnbetrieben anfallen, unwirtschaftlich.The invention relates to a circulation formwork as described in the preamble of claim 1. Such formwork for prestressed concrete sleepers is described, for example, in the magazine "Bundesbahn" No. 10/1981 p. 844, 3rd column, 2nd paragraph in the article "30 years of concrete sleepers at the Deutsche Bundesbahn". Because of their stiffness required for applying the prestressing, they are very complex and can only be used for a certain finished part - a certain threshold. The high cost of formwork renders the process uneconomical for special sleepers with small quantities, such as those that occur with industrial siding connections or with small municipal or private railway companies.

Aus der französischen Offenlegungsschrift 26 44 722 A1 ist eine zweiteilige Schwellenschalung bekannt. Der Unterteil umfaßt die Seiten- und Bodenflächen der Schalung. Über diesen wird ein Rahmen gestülpt, der als Spannrahmen dient und dessen Spannriegel gleichzeitig die Stirnflächen der Schwellenschalung bilden. Durch Verwendung von Unterteilen deren Bodenplatten unterschiedlich angeordnete Einbauelemente aufweisen, können Weichenschwellensätze mit gleicher Länge, jedoch für unterschiedliche Positionen im Weichenbereich mit einem Rahmenteil hergestellt werden.A two-part threshold formwork is known from French published patent application 26 44 722 A1. The lower part covers the side and bottom surfaces of the formwork. A frame is slipped over this, which serves as a tensioning frame and whose tensioning latches simultaneously form the end faces of the threshold formwork. By using lower parts whose base plates have differently arranged installation elements, switch sleeper sets with the same length, but for different positions in the switch area, can be produced with one frame part.

Die Erfindung hat sich die Aufgabe gestellt, die bekannten Schwellenkonstruktionen so weiter zu entwickeln, daß innerhalb der Grenzen, die die Spanngliedwiderlager für die Fertigteillänge setzen, beliebig lange Fertigteile herstellbar sind, ohne daß erhebliche Formkosten entstehen.The invention has set itself the task of developing the known sleeper constructions so that within the limits that the tendon abutments set for the length of the finished part, any length of finished parts can be produced without incurring considerable molding costs.

Die Aufgabe wird durch eine Umlaufschalung, wie sie im kennzeichnenden Teil des Anspruchs 1 beschrieben ist, gelöst.The object is achieved by a circulation formwork, as described in the characterizing part of claim 1.

Durch Zerlegung der Umlaufschalung in zwei Teilelemente:

  • einen Spannrahmen, der die Vorspannkräfte überträgt und der mit einfachen Profilen wirtschaftlich und beliebig steif herstellbar ist, und
  • ein Schalungselement, das in den Rahmen einsetzbar ist, das Fertigteil formt und dafür nur den Formdruck und die Rüttelkräfte für die Verdichtung des Betons aufzunehmen hat,
ist es möglich, ein Vielzahl unterschiedlich geformter, in ihrer Größe nur durch die Rahmenabmessungen begrenzter Fertigteile mit Hilfe nur eines universellen Spannrahmens herzustellen.By splitting the circular formwork into two sub-elements:
  • a stenter frame which transmits the prestressing forces and which can be produced economically and as stiffly as desired with simple profiles, and
  • a formwork element that can be inserted into the frame, forms the prefabricated part and only has to absorb the molding pressure and the vibrating forces for the compaction of the concrete,
it is possible to manufacture a large number of differently shaped finished parts, which are only limited in size by the frame dimensions, using only one universal stenter.

Das Schalungselement kann, da durch die hohen Vorspannkräfte nicht belastet, wirtschaftlich hergestellt werden. Zur Herstellung dieses Elementes können Abgußverfahren von Formkörpern, beispielsweise aus Holz, und als Materialien auch Beton und Kunststoff verwendet werden wodurch das Herstellverfahren auch für relativ komplizierte Formkörper wesentlich verbilligt wird.The formwork element can be economically manufactured because it is not stressed by the high prestressing forces. For the production of this element, casting processes of shaped bodies, for example made of wood, and also concrete and plastic can be used as materials, as a result of which the manufacturing process is considerably cheaper, even for relatively complicated shaped bodies.

Bei kleinen Fertigteilserien fallen dann als Schalungskostenanteil nur die Kosten für das Schalungselement an, für das - je kleiner die Serie ist - ein um so preiswerterer Werkstoff mit entsprechend geringerer Verschleißfestigkeit gewählt werden kann. Vorschläge für geeignete Materialien sind in den Ansprüchen 2 - 8 angegeben. Zweckmäßige Ausbildungen der Umlaufschalungen sind in den Ansprüchen 10 und 11 beschrieben. Die Innenseiten der Riegel und Pfosten des Rahmens werden vorteilhaft nach Anspruch 9 nach innen und unten geneigt ausgebildet, um Schalungselemente aus Vollmaterial leichter ausheben zu können. Damit die Schalungselemente beim Hantieren der Umlaufschalungen nicht aus dein Rahmen fallen, können lösbare Haltevorrichtungen nach Anspruch 10 vorgesehen werden. Dies können beispielsweise am oberen Rahmenrand angeordnete Haltebleche oder aus dem Rahmen in das Schalungselement einbindende Dollen sein.In the case of small series of precast elements, only the costs for the formwork element are incurred as the formwork cost component, for which - the smaller the series - a cheaper material with correspondingly lower wear resistance can be selected. Proposals for suitable materials are given in claims 2-8. Appropriate designs of the circulating formwork are described in claims 10 and 11. The insides of the transoms and posts of the frame are advantageously formed according to claim 9 inclined inwards and downwards so that formwork elements made of solid material can be lifted out more easily. So that the formwork elements do not fall out of your frame when handling the circulating formwork, releasable holding devices can be provided according to claim 10. These can be, for example, holding plates arranged on the upper edge of the frame or oarlocks integrating from the frame into the formwork element.

Die Erfindung ist durch die Figuren 1 - 5 beschrieben. Es zeigen:

Fig. 1 - 3
das Beispiel eines Rahmens für 2 Fertigteile, Fig. 1 im Längsschnitt, Fig. 2 im Querschnitt, Fig. 3 in der Aufsicht.
Fig. 4 -6
das Beispiel einer vollständingen Umlaufschalung für 2 Fertigteile mit Rahmen und Schalungselementen und Vorrichtungen nach Anspruch 10, Fig. 4 im Längsschnitt, Fig. 5 im Querschnitt, Fig. 6 in der Aufsicht.
The invention is described by FIGS. 1-5. Show it:
1 - 3
the example of a frame for 2 finished parts, Fig. 1 in longitudinal section, Fig. 2 in cross section, Fig. 3 in supervision.
Fig. 4 -6
the example of a complete circular formwork for 2 prefabricated parts with frames and formwork elements and devices according to claim 10, Fig. 4 in longitudinal section, Fig. 5 in cross section, Fig. 6 in the plan.

Die erfindungsgemäße Umlaufschalung wird von dem Rahmen 1 und dem Schalungselement 4 gebildet. Der Rahmen 1 umfaßt an den Kopfenden die Widerlagerriegel 2 sowie die Längspfosten 3, die die Widerlagerriegel 2 gegen die Spannkräfte der Spanndrähte 6 auf Abstand halten.The circulating formwork according to the invention is formed by the frame 1 and the formwork element 4. The frame 1 comprises at the head ends the abutment bars 2 and the longitudinal posts 3, which keep the abutment bars 2 at a distance against the tensioning forces of the tensioning wires 6.

Jeder Rahmen 1 umschließt mit Riegeln 2 und Pfosten 3 mindestens ein Feld (in den dargestellten Beispielen sind es 2 Felder) in das ein Schalungselement 4 einsetzbar ist. Das Schalungselement 4 wird außen durch den Rahmen 1 gehalten und formt mit seiner Innenkontur 7 das Fertigteil 5.
In Fig. 5 ist ein Rahmen 1 mit nach Anspruch 9 mit geneigten Innenseiten 8 ausgebildeten Riegeln 2 und Pfosten 3 und Vorrichtungen 9 nach Anspruch 10, die das Schalungselement 4 lösbar im Rahmen 1 halten, dargestellt. Im Beispiel ist ein Dollen 9 als Haltevorrichtung gezeigt.Each frame 1 encloses with bars 2 and posts 3 at least one field (in the examples shown there are two fields) into which a formwork element 4 can be inserted. The formwork element 4 is held on the outside by the frame 1 and forms the finished part 5 with its inner contour 7.
5 shows a frame 1 with bars 2 and posts 3 and devices 9 according to claim 10 designed according to claim 9 with inclined inner sides 8 and holding the formwork element 4 detachably in the frame 1. In the example, an oarlock 9 is shown as a holding device.

Claims (10)

Umlaufschalung für Spannbetonfertigteile - vornehmlich Betonschwellen - mit Vorspannung mit sofortigem Verbund, deren Längsspannglieder vor dem Einfüllen des Betons in die Schalung gegen die Stirnflächen der Schalung gespannt werden und bei denen die Spannkraft nach dem Erhärten des Betons und Lösen der Endverankerungen durch Haltekräfte auf den Beton übertragen wird, mit einen steifen, die Spannkräfte der Spannglieder aufnehmenden Rahmen (1) für mindestens ein Fertigteil (5) und mit mindestens einem mit den Rahmen zusammenwirkenden, das Fertigteil (5) formenden, nur den Formdruck des Betons und die Verdichtungsbeanspruchungen aufnehmenden Schalungselement (4), dadurch gekennzeichnet, daß die Umlaufschalung unterschiedlich lange Schalungselemente (4) aufweist, die jeweils in den Rahmen (1) einsetzbar sind.Circulation formwork for pre-stressed concrete parts - primarily concrete sleepers - with pre-stressing with immediate bond, the longitudinal tendons of which are tensioned against the end faces of the formwork before the concrete is poured into the formwork and in which the tension force is transferred to the concrete by holding forces after the concrete has hardened and released by the end anchorages , with a rigid frame (1) absorbing the tensioning forces of the tendons for at least one prefabricated part (5) and with at least one formwork element (4) which interacts with the frame and forms the prefabricated part (5) and only absorbs the form pressure of the concrete and the compaction stresses ), characterized in that the circulating formwork has formwork elements (4) of different lengths which can each be inserted into the frame (1). Umlaufschalung nach Anspruch 1, dadurch gekennzeichnet daß die Schalungselemente (4) aus Metallblech bestehen.Circulating formwork according to claim 1, characterized in that the formwork elements (4) consist of sheet metal. Umlaufschalung nach Anspruch 1, dadurch gekennzeichnet, daß die Schalungselemente (4) aus Kunststoff bestehen.Circulating formwork according to claim 1, characterized in that the formwork elements (4) consist of plastic. Umlaufschalung nach Anspruch 1, dadurch gekennzeichnet, daß die Schalungselemente (4) aus Beton bestehen.Circulating formwork according to claim 1, characterized in that the formwork elements (4) consist of concrete. Umlaufschalung nach Anspruch 3 oder 4, dadurch gekennzeichnet, daß dem Fertigungsmaterial der Schalungselemente (4) Zugspannungen in der Matrix aufnehmende Fasern beigemischt sind.Circulating formwork according to claim 3 or 4, characterized in that tensile stresses in the matrix are added to the manufacturing material of the formwork elements (4). Umlaufschalung nach Anspruch 3, dadurch gekennzeichnet, daß der Kunststoff durch Einlage von Geweben, z.B. Glasfaserlaminat, verstärkt ist.Circulating formwork according to claim 3, characterized in that the plastic is reinforced by inserting fabrics, for example glass fiber laminate. Umlaufschalung nach Anspruch 4, dadurch gekennzeichnet, daß die Schalungselemente (4) aus Leichtbeton bestehen.Circulating formwork according to claim 4, characterized in that the formwork elements (4) consist of lightweight concrete. Umlaufschalung nach einem der Ansprüche 4 oder 7, dadurch gekennzeichnet, daß der Beton eine Bewehrung aufweist.Circulation formwork according to one of claims 4 or 7, characterized in that the concrete has reinforcement. Umlaufschalung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Innenseiten (8) der Riegel (2) und Pfosten (3) des Rahmens (1) geneigt sind und die Außenmaße der in den Rahmen (1) einzusetzenden Schalungselemente (4) sich allseitig zur Rahmenunterseite hin verringern.Circulating formwork according to one of Claims 1 to 8, characterized in that the inner sides (8) of the transoms (2) and posts (3) of the frame (1) are inclined and the outer dimensions of the formwork elements (4) to be inserted into the frame (1) decrease on all sides towards the underside of the frame. Umlaufschalung nach Anspruch 9, dadurch gekennzeichnet, daß Vorrichtungen (9) zwischen dem Rahmen (1) und den Seitenwänden der Schalungselemente (4) vorhanden sind, die jedes/eingesetzte Schalungselement (4) lösbar im Rahmen (1) halten.Circulating formwork according to claim 9, characterized in that devices (9) are present between the frame (1) and the side walls of the formwork elements (4) which detachably hold each / inserted formwork element (4) in the frame (1).
EP92117164A 1992-10-08 1992-10-08 Assembly for prestressed concrete moulded elements Withdrawn EP0592695A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP92117164A EP0592695A1 (en) 1992-10-08 1992-10-08 Assembly for prestressed concrete moulded elements
ES92117164T ES2050650T1 (en) 1992-10-08 1992-10-08 SURROUNDING FORMWORK FOR FINISHED CONCRETE PARTS.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP92117164A EP0592695A1 (en) 1992-10-08 1992-10-08 Assembly for prestressed concrete moulded elements

Publications (1)

Publication Number Publication Date
EP0592695A1 true EP0592695A1 (en) 1994-04-20

Family

ID=8210107

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92117164A Withdrawn EP0592695A1 (en) 1992-10-08 1992-10-08 Assembly for prestressed concrete moulded elements

Country Status (2)

Country Link
EP (1) EP0592695A1 (en)
ES (1) ES2050650T1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0979713A2 (en) * 1998-08-11 2000-02-16 Pfleiderer Infrastrukturtechnik GmbH & Co. KG Flexible process and plant for making concrete railway sleepers
DE102007048635A1 (en) * 2007-04-17 2008-10-30 Betonwerk Wernau Gmbh & Co. Kg Hollow profile, especially a pipe or slotted ring, made of reinforced concrete comprises a combined prestressed and non-prestressed reinforcement extending along the profile length
EP1360397B2 (en) † 2001-02-14 2009-11-11 Max Bögl Bauunternehmung GmbH & Co. KG Method and pallet for the production of a precise pre-cast concrete piece
WO2010127652A1 (en) * 2009-04-09 2010-11-11 Stephan Sehliger Formwork for a precision concrete component designed as a railroad tie
CN102101320B (en) * 2009-12-18 2013-04-17 北京中铁房山桥梁有限公司 Device for stretching and fixing pre-stressed steel bar
DE102007004038B4 (en) * 2007-01-22 2016-10-27 Rail.One Gmbh Method for producing switch sleepers and switch points produced by this method

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1331944A (en) * 1918-06-25 1920-02-24 Frederick C Shearer Tie-mold
DE350673C (en) * 1920-08-19 1922-03-24 Arthur Mueller Bauten Device for manufacturing ridge tiles from concrete
FR697450A (en) * 1930-06-14 1931-01-16 Improvement of molds used to obtain all terracotta objects
FR1517144A (en) * 1967-02-28 1968-03-15 Molding system for precast concrete elements
DE1992937U (en) * 1967-10-31 1968-08-29 Friedrich Wilhelm Daub FORM FOR THE PRODUCTION OF CONCRETE BLOCK
US3475265A (en) * 1966-02-28 1969-10-28 Schokbeton Products Corp Lightweight mold for the forming of concrete
US3829057A (en) * 1973-02-09 1974-08-13 Mansfield Tire & Rubber Co Concrete form
GB2011826A (en) * 1978-01-05 1979-07-18 Union Carbide Corp Carbon Fiber-Reinforced Cement Mould
GB2113600A (en) * 1982-01-21 1983-08-10 Vagneux Traverses Beton Assembly for casting elements in prestressed reinforced concrete, particularly beams, and process for making such elements
FR2644722A1 (en) * 1989-03-22 1990-09-28 Vagneux Traverses Beton Arme S Method for moulding a set of reinforced concrete railway sleepers, particularly for switchgear, moulded for this purpose and sleepers obtained by this method
EP0439399A1 (en) * 1990-01-22 1991-07-31 Rector S.A. Modular unit for making prestressed concrete products
DE4100191C1 (en) * 1991-01-05 1992-05-14 Stewing Stahl- Und Anlagenbau Gmbh & Co. Kg, 4270 Dorsten, De Mould for reinforced concrete sleepers - has several mould cavities and has jacking devices for tensioning reinforcement bars
DE9208016U1 (en) * 1992-06-16 1992-08-27 Wayss & Freytag Ag, 6000 Frankfurt Formwork for the production of several different length types of prestressed concrete sleepers

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1331944A (en) * 1918-06-25 1920-02-24 Frederick C Shearer Tie-mold
DE350673C (en) * 1920-08-19 1922-03-24 Arthur Mueller Bauten Device for manufacturing ridge tiles from concrete
FR697450A (en) * 1930-06-14 1931-01-16 Improvement of molds used to obtain all terracotta objects
US3475265A (en) * 1966-02-28 1969-10-28 Schokbeton Products Corp Lightweight mold for the forming of concrete
FR1517144A (en) * 1967-02-28 1968-03-15 Molding system for precast concrete elements
DE1992937U (en) * 1967-10-31 1968-08-29 Friedrich Wilhelm Daub FORM FOR THE PRODUCTION OF CONCRETE BLOCK
US3829057A (en) * 1973-02-09 1974-08-13 Mansfield Tire & Rubber Co Concrete form
GB2011826A (en) * 1978-01-05 1979-07-18 Union Carbide Corp Carbon Fiber-Reinforced Cement Mould
GB2113600A (en) * 1982-01-21 1983-08-10 Vagneux Traverses Beton Assembly for casting elements in prestressed reinforced concrete, particularly beams, and process for making such elements
FR2644722A1 (en) * 1989-03-22 1990-09-28 Vagneux Traverses Beton Arme S Method for moulding a set of reinforced concrete railway sleepers, particularly for switchgear, moulded for this purpose and sleepers obtained by this method
EP0439399A1 (en) * 1990-01-22 1991-07-31 Rector S.A. Modular unit for making prestressed concrete products
DE4100191C1 (en) * 1991-01-05 1992-05-14 Stewing Stahl- Und Anlagenbau Gmbh & Co. Kg, 4270 Dorsten, De Mould for reinforced concrete sleepers - has several mould cavities and has jacking devices for tensioning reinforcement bars
DE9208016U1 (en) * 1992-06-16 1992-08-27 Wayss & Freytag Ag, 6000 Frankfurt Formwork for the production of several different length types of prestressed concrete sleepers

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 13, no. 489 (M-888)(3837) 7. November 1989 & JP-A-11 96 308 ( DAIWA KOGYO K.K. ) 8. August 1989 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0979713A2 (en) * 1998-08-11 2000-02-16 Pfleiderer Infrastrukturtechnik GmbH & Co. KG Flexible process and plant for making concrete railway sleepers
EP0979713A3 (en) * 1998-08-11 2001-10-17 Pfleiderer Infrastrukturtechnik GmbH & Co. KG Flexible process and plant for making concrete railway sleepers
EP1360397B2 (en) † 2001-02-14 2009-11-11 Max Bögl Bauunternehmung GmbH & Co. KG Method and pallet for the production of a precise pre-cast concrete piece
DE102007004038B4 (en) * 2007-01-22 2016-10-27 Rail.One Gmbh Method for producing switch sleepers and switch points produced by this method
DE102007048635A1 (en) * 2007-04-17 2008-10-30 Betonwerk Wernau Gmbh & Co. Kg Hollow profile, especially a pipe or slotted ring, made of reinforced concrete comprises a combined prestressed and non-prestressed reinforcement extending along the profile length
WO2010127652A1 (en) * 2009-04-09 2010-11-11 Stephan Sehliger Formwork for a precision concrete component designed as a railroad tie
CN102101320B (en) * 2009-12-18 2013-04-17 北京中铁房山桥梁有限公司 Device for stretching and fixing pre-stressed steel bar

Also Published As

Publication number Publication date
ES2050650T1 (en) 1994-06-01

Similar Documents

Publication Publication Date Title
DE3876966T2 (en) WIRE ANCHOR DEVICE FOR CONSTRUCTING AN INSULATED WALL.
EP2559532B1 (en) Method for producing a translucent multilayer composite building element with integrated façade panel, and products produced thereby
DE69019744T2 (en) Segment and method for prefabricating bridges and similar structures.
DE4100191C1 (en) Mould for reinforced concrete sleepers - has several mould cavities and has jacking devices for tensioning reinforcement bars
EP1738027B1 (en) Sleeper frame for a ballasted railway track and method for production thereof
EP0592695A1 (en) Assembly for prestressed concrete moulded elements
DE3042078A1 (en) CEMENT PANEL, AND METHOD AND DEVICE FOR THE PRODUCTION THEREOF
DE69811538T2 (en) METHOD FOR PRODUCING DRAIN CAPS FROM FIBER-REINFORCED PLASTIC, AND DRAIN CAPS MADE FROM THIS PROCESS FROM FIBER-REINFORCED PLASTIC
EP0299226B1 (en) Shuttering for making concrete building-elements
DE19708734A1 (en) Procedure for manufacture of slab=form or beam=form reinforced concrete components, especially sleepers
DE3131104C2 (en) Noise barrier
DE4131161C2 (en)
DE3812719C1 (en)
DE69123517T2 (en) Process for the production of a sheet steel concrete ceiling
DE102015003338A1 (en) Wood-concrete composite construction and method for its production
DE19616622B4 (en) Kit for creating retaining walls
DE1301036B (en) Reinforced concrete hollow beams for bridge or ceiling panels
DE975466C (en) Prestressed component and process for its manufacture
DE102005002331B3 (en) Shuttering panel for liquid concrete during casting and curing processes has skin with integral pressure nipples
DE3723629C2 (en)
EP1190826A2 (en) Production process of a prefabricated wall element
EP0104262A1 (en) Composite self-supporting slab - product - method - device - application
AT257119B (en) Roof construction
AT209048B (en) Transparent or translucent wall element
DE1945506C (en) Ceiling element

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19931109

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH ES FR IT LI

EL Fr: translation of claims filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: BA2A

Ref document number: 2050650

Country of ref document: ES

Kind code of ref document: T1

ITCL It: translation for ep claims filed

Representative=s name: LENZI & C.

17Q First examination report despatched

Effective date: 19950512

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19951017