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 reinforcementsInfo
- 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
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims description 24
- 230000002787 reinforcement Effects 0.000 title claims description 14
- 229910052742 iron Inorganic materials 0.000 title claims description 12
- 239000011150 reinforced concrete Substances 0.000 title claims description 5
- 238000004519 manufacturing process Methods 0.000 title claims description 3
- 238000000034 method Methods 0.000 title claims description 3
- 238000001816 cooling Methods 0.000 claims description 2
- 239000004567 concrete Substances 0.000 description 5
- 229910000754 Wrought iron Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- B28B21/56—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts
- B28B21/60—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts prestressed reinforcements
-
- 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
- B28B21/60—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts prestressed reinforcements
- B28B21/62—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts prestressed reinforcements circumferential laterally tensioned
-
- 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
- B28B23/046—Post treatment to obtain pre-stressed articles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L25/00—Construction or details of pipe joints not provided for in, or of interest apart from, groups F16L13/00 - F16L23/00
- F16L25/0027—Joints 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)
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)
| 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 |
-
1928
- 1928-07-07 GB GB19826/28A patent/GB295376A/en not_active Expired
- 1928-07-31 NL NL24848D patent/NL24848C/xx active
-
1930
- 1930-07-03 DE DER74036D patent/DE502507C/en not_active Expired
Cited By (3)
| 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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