DE502507C - Process for the production of iron-reinforced concrete pipes u. Like. Baukoerper under tension of the iron reinforcements - Google Patents

Process for the production of iron-reinforced concrete pipes u. Like. Baukoerper under tension of the iron reinforcements

Info

Publication number
DE502507C
DE502507C DER74036D DER0074036D DE502507C DE 502507 C DE502507 C DE 502507C DE R74036 D DER74036 D DE R74036D DE R0074036 D DER0074036 D DE R0074036D DE 502507 C DE502507 C DE 502507C
Authority
DE
Germany
Prior art keywords
iron
reinforcements
reinforced concrete
production
under tension
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
Application number
DER74036D
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German (de)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of DE502507C publication Critical patent/DE502507C/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B21/00Methods or machines specially adapted for the production of tubular articles
    • B28B21/56Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts
    • B28B21/60Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts prestressed reinforcements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B21/00Methods or machines specially adapted for the production of tubular articles
    • B28B21/56Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts
    • B28B21/60Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts prestressed reinforcements
    • B28B21/62Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts prestressed reinforcements circumferential laterally tensioned
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B23/00Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
    • B28B23/02Arrangements 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
    • B28B23/04Arrangements 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
    • B28B23/046Post treatment to obtain pre-stressed articles
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L25/00Constructive types of pipe joints not provided for in groups F16L13/00 - F16L23/00 ; Details of pipe joints not otherwise provided for, e.g. electrically conducting or insulating means
    • F16L25/0027Joints for pipes made of reinforced concrete

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Rod-Shaped Construction Members (AREA)

Description

Verfahren zur Herstellung eisenbewehrter Betonröhren u. dgl. Baukörper unter Vorspannung der Eisenbewehrungen Es ist bereits vorgeschlagen worden, Eisenbewehrungen mit Vorspannung in Mörtellatten einzubetten, um deren zulässige Beanspruchung zu erhöhen, wobei jedoch die Eisenbewehrungen auf mechanischem Wege straff gespannt werden. Die auf diese Weise erzielte Vorspannung ist nicht besonders hoch und bedingt ziemlich komplizierte Hilfsvorrichtungen sowie einen bedeutenden Kraftaufwand.Process for the production of iron-reinforced concrete pipes and similar structures under prestressing of iron reinforcements It has already been proposed to iron reinforcements to be embedded in mortar slats with prestress in order to ensure their permissible stress increase, but the iron reinforcement is stretched taut mechanically will. The preload achieved in this way is not particularly high and conditional rather complicated auxiliary devices and considerable effort.

Gemäß der Erfindung wird zwecks Erhöhung der zulässigen Beanspruchung von Betonröhren u. dgl. Baukörpern eine Vorspannung in den Eisenbewehrungen auf die Weise erzeugt, daß die Eisenbewehrungen in erwärmtem Zustande auf eine feste, gegebenenfalls einen Teil des zu bewehrenden Körpers bildende Unterlage, z. B. auf einen Kern, ein Gerüst o. dgl., derart aufgebracht werden, daß sie am Schwinden gehindert werden und daher nach dem Erkalten unter Spannung stehen. Damit den Eisenbewehrungen diese Spannung erhaltenbleibt, müssen die Bewehrungen beim Auflegen auf ihre Träger, damit sie während ihres Erkaltens ihre für die Erhaltung der Spannung erforderliche Lage beibehalten, sogleich an ihren Enden durch beliebige mechanische Mittel fsetgehalten werden. Dies geschieht bei schraubenförmig aufgebrachten Eisenbewehrungen z. B. am einfachsten dadurch, daß die beiden Entwicklungen durch Verschweißen zu Reifen verwandelt werden. Erfahrungsmäßig kann auf diese Weise die zulässige Beanspruchung der bewehrten Betonkörper auf 2ooo bis 2400 kg/cm2, bei Verwendung von Qualitätseisen sogar bis auf 4000 kg/cm2 erhöht werden.According to the invention, in order to increase the permissible stress of concrete pipes and similar structures on a prestress in the iron reinforcement produced in a way that the iron reinforcements in a heated state on a solid, optionally forming a part of the body to be reinforced, z. B. on a core, a framework or the like., Are applied in such a way that they shrink are prevented and are therefore under tension after cooling. So that the iron reinforcements If this tension is maintained, the reinforcements must be placed on their girders, so that they do what they need to maintain tension while they cool down Maintain position, immediately held at its ends by any mechanical means will. This happens with helically applied iron reinforcements z. B. The easiest way to do this is by welding the two developments into tires be transformed. Based on experience, the permissible stress can be determined in this way of the reinforced concrete body to 2ooo to 2400 kg / cm2, when using quality iron can even be increased up to 4000 kg / cm2.

Auf der Zeichnung sind einige Ausführungsbeispiele der gemäß der Erfindung mit Eisen bewehrten Betonkörper veranschaulicht, und zwar zeigen Abb. 2, q. und 5 axiale Längsschnitte, Abb. i, 3 und 6 Querschnitte.In the drawing are some embodiments according to the invention illustrated with iron reinforced concrete body, namely show Fig. 2, q. and 5 axial longitudinal sections, Fig. I, 3 and 6 cross sections.

Gemäß Abb. i und 2 wird auf ein dünnwandiges Rohr i aus Beton o. dgl. ein erhitzter Draht oder Stangeneisen 2 schraubenförmig oder gitterförmig gelegt. Diese durch natürliche Wärmeausstrahlung oder künstlich zur Abkühlung gebrachte Bewehrung wird durch das Rohr i am Schwinden gehindert, so daß in der Bewehrung eine hohe Vorspannung entsteht und dauernd erhalten wird. Die Bewehrung kann alsdann durch eine Betonschicht 3 verdeckt werden.According to Fig. I and 2, a thin-walled pipe i made of concrete o. a heated wire or bar iron 2 laid in a helical or lattice shape. These are brought to cool by natural heat radiation or artificially Reinforcement is prevented from shrinking by the pipe i, so that in the reinforcement a high pre-tension arises and is maintained permanently. The reinforcement can then be covered by a concrete layer 3.

Gemäß Abb. 3 und q. werden auf ein Blechrohr q., zunächst parallel zur Achse, Längsstäbe 5 und auf diese ein erhitzter Draht oder Stangeneisen 6 schrauben- oder gitterförmig aufgelegt, die alsdann in eine Betonschicht eingebettet werden. Nach dem Erstarren der Betonschicht wird das Blechrohr q. herausgezogen.According to Fig. 3 and q. are on a sheet metal pipe q., initially parallel to the axis, longitudinal rods 5 and on this a heated wire or bar 6 screw or laid in a grid, which are then embedded in a concrete layer. After the concrete layer has solidified, the sheet metal pipe q. pulled out.

Gemäß Abb. 5 und 6 werden mehrere Längsstäbe ä im Kreise parallel zueinander aufgestellt, in dieser Lage durch beliebige geeignete Hilfsmittel, z. B. durch zwei sternförmige Hilfsrahmen, gesichert, mit erhitztem Draht oder Stangeneisen i umwickelt und alsdann einbetoniert.According to Fig. 5 and 6, several longitudinal bars - are parallel in a circle set up to each other, in this position by any suitable means, eg. B. by two star-shaped subframes, secured with heated wire or bar iron i wrapped and then concreted in.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eisenbewehrter Betonröhren u. dgl. Baukörper unter Vorspannung der Eisenbewehrungen, dadurch gekennzeichnet, daß die Eisenbewehrungen in erwärmtem Zustande unter Festlegung der Enden auf einen Kern, ein Gerüst o. dgl. aufgebracht werden, so daß sie nach dem Erkalten dauernd unter Spannung stehen.PATENT CLAIM: Process for the production of iron-reinforced concrete pipes and the like structure under prestressing of the iron reinforcement, characterized in that, that the iron reinforcements in a heated state with fixing of the ends on one Core, a scaffold or the like. Be applied so that they are permanent after cooling are under tension.
DER74036D 1927-08-11 1930-07-03 Process for the production of iron-reinforced concrete pipes u. Like. Baukoerper under tension of the iron reinforcements Expired DE502507C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS295376X 1927-08-11

Publications (1)

Publication Number Publication Date
DE502507C true DE502507C (en) 1930-07-16

Family

ID=5452070

Family Applications (1)

Application Number Title Priority Date Filing Date
DER74036D Expired DE502507C (en) 1927-08-11 1930-07-03 Process for the production of iron-reinforced concrete pipes u. Like. Baukoerper under tension of the iron reinforcements

Country Status (3)

Country Link
DE (1) DE502507C (en)
GB (1) GB295376A (en)
NL (1) NL24848C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE744354C (en) * 1938-05-08 1944-01-14 Ewald Hoyer Method and device for the production of reinforced concrete pipes
DE757127C (en) * 1939-07-05 1951-05-17 Eisenwerke A G Deutsche A pipe consisting of a core and jacket pipe made from a mixture of a hydraulic binder and aggregates
DE1016991B (en) * 1952-12-03 1957-10-03 Ed Zueblin A G Butt joint of concrete, reinforced concrete and reinforced concrete prestressing pipes and processes for their production

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE744354C (en) * 1938-05-08 1944-01-14 Ewald Hoyer Method and device for the production of reinforced concrete pipes
DE757127C (en) * 1939-07-05 1951-05-17 Eisenwerke A G Deutsche A pipe consisting of a core and jacket pipe made from a mixture of a hydraulic binder and aggregates
DE1016991B (en) * 1952-12-03 1957-10-03 Ed Zueblin A G Butt joint of concrete, reinforced concrete and reinforced concrete prestressing pipes and processes for their production

Also Published As

Publication number Publication date
NL24848C (en) 1931-08-15
GB295376A (en) 1929-05-09

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