DE937827C - Reinforced concrete railway sleeper - Google Patents
Reinforced concrete railway sleeperInfo
- Publication number
- DE937827C DE937827C DED17427A DED0017427A DE937827C DE 937827 C DE937827 C DE 937827C DE D17427 A DED17427 A DE D17427A DE D0017427 A DED0017427 A DE D0017427A DE 937827 C DE937827 C DE 937827C
- Authority
- DE
- Germany
- Prior art keywords
- reinforced concrete
- railway sleeper
- concrete
- concrete railway
- steel inserts
- 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
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B3/00—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails
- E01B3/28—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails made from concrete or from natural or artificial stone
- E01B3/32—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails made from concrete or from natural or artificial stone with armouring or reinforcement
Description
Das Patent 829 743 betrifft eine Eisenbahnschwelle aus Stahlbeton mit einer oder mehreren nach dem Erhärten des Betons angespannten, die eingeleiteten Spannkräfte an den Verankerungsstellen auf den Beton übertragenden Stahleinlagen. Die Erfindung wird nach diesem Patent darin gesehen, daß die haarnadelförmig, z. B. aus Stahlband geformte Einlage aus zwei im wesentlichen geradlinig verlaufenden Schenkeln und einem gebogenen Verbindungsstück besteht, in Längsrichtung der Schwelle eingebettet ist und mit ihren Schenkelenden aus der Schwellenstirnseite herausragt. Die frei liegenden Schenkelenden sind jeweils mit einem einen Kopf tragenden Ansatzstück verbunden, an dem Spannvorrichtungen z. B. in Form hydraulischer Pressen angreifen.Patent 829,743 relates to a reinforced concrete railroad tie with one or more strained after the hardening of the concrete, which initiated Tension forces at the anchoring points on the steel inserts that transfer the concrete. The invention is seen according to this patent in that the hairpin-shaped, z. B. formed from steel strip insert made of two substantially rectilinear Legs and a curved connecting piece consists in the longitudinal direction of the threshold is embedded and protrudes with its leg ends from the threshold face. The exposed leg ends are each provided with an extension piece that supports a head connected to the clamping devices z. B. attack in the form of hydraulic presses.
Die Erfindung bezweckt eine Verbesserung und weitere Ausbildung einer durch das Patent 829 743 geschützten Eisenbahnschwelle, bei der zwei haarnadelförmig ausgebildete Stahleinlagen angeordnet sind.The invention aims to improve and further develop a Railway sleeper protected by patent 829,743, two of which are hairpin-shaped trained steel inserts are arranged.
Wie Versuche ergeben haben, ist die Art der Anordnung der beiden, Stahleinlagen im Betonschwellenkörper von wesentlichem Einfluß für die Festigkeit der Schwelle. Es wurde festgestellt, daß die beispielsweise Anordnung der beiden Schlaufen nebeneinander in zwei dachförmig zueinander geneigten Ebenen oder in zwei parallel übereinanderliegenden Ebenen nicht die gewünschten Erfolge aufweist. Erst durch die Anordnung der beiden haarnadelförmig ausgebildeten Stahleinlagen in zwei etwa in den Ebenen der Diagonalen des Querschnittes gemäß der vorliegenden Erfindung wird der wesentliche Vorteil erreicht, daß die Vorspannkraft in zwei Stufen zentrisch eingebracht werden kann, und zwar jeweils für eine Schlaufe. Diese zentrische Vorspannung, auch in den einzelnen Stufen, ist anderen Anordnungen weit überlegen.As experiments have shown, the type of arrangement of the two, Steel inserts in the concrete sleeper body have a major impact on strength the threshold. It has been found that the example arrangement of the two Loops next to each other in two roof-shaped inclined planes or in two parallel superimposed levels does not have the desired results. First due to the arrangement of the two hairpin-shaped steel inserts in two approximately in the planes of the diagonals of the cross section according to the present invention the essential advantage is achieved that the pre-tensioning force is centric in two stages can be introduced, each for one loop. This centric preload, also in the individual stages, is far superior to other arrangements.
In der Zeichnung ist ein Ausführungsbeispiel des Erfindungsgegenstandes im Querschnitt dargestellt. Die beiden haarnadelförmig ausgebildeten Stahleinlagen a sind in dem aus Beton bestehenden Schwellenkörper b so angeordnet, daß die durch die beiden Schenkel einer jeden Schlaufe gedachten Ebenen etwa in den Ebenen der Diagonalen des Querschnittes des Schwellenkörpers liegen.The drawing shows an embodiment of the subject matter of the invention shown in cross section. The two hairpin-shaped steel inserts a are arranged in the existing concrete sleeper body b so that the through the two legs of each loop imaginary planes roughly in the planes of the Diagonals of the cross-section of the sleeper body lie.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DED17427A DE937827C (en) | 1954-03-28 | 1954-03-28 | Reinforced concrete railway sleeper |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DED17427A DE937827C (en) | 1954-03-28 | 1954-03-28 | Reinforced concrete railway sleeper |
Publications (1)
Publication Number | Publication Date |
---|---|
DE937827C true DE937827C (en) | 1956-01-19 |
Family
ID=7035671
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DED17427A Expired DE937827C (en) | 1954-03-28 | 1954-03-28 | Reinforced concrete railway sleeper |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE937827C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3832504A1 (en) * | 1988-09-24 | 1990-04-05 | Dyckerhoff & Widmann Ag | RAILWAY SLEEPER FROM PRESSURE CONCRETE |
-
1954
- 1954-03-28 DE DED17427A patent/DE937827C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3832504A1 (en) * | 1988-09-24 | 1990-04-05 | Dyckerhoff & Widmann Ag | RAILWAY SLEEPER FROM PRESSURE CONCRETE |
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