AT139335B - Iron girder. - Google Patents
Iron girder.Info
- Publication number
- AT139335B AT139335B AT139335DA AT139335B AT 139335 B AT139335 B AT 139335B AT 139335D A AT139335D A AT 139335DA AT 139335 B AT139335 B AT 139335B
- Authority
- AT
- Austria
- Prior art keywords
- iron
- stresses
- iron girder
- desc
- artificially
- Prior art date
Links
Landscapes
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Description
<Desc/Clms Page number 1>
Eiserner Träger.
Es ist bekannt, zwecks besserer Ausnutzung der Baustoffe im Eisenbetonbau künstlich vorgespannte Eiseneinlagen zu verwenden. Auch ist es nicht neu, beim Verstärken eiserner Fachwerke unter Verwendung einer Umhüllung aus bewehrten Beton für die Druckglieder die Zugglieder durch Zulageeisen zu verstärken, die vor ihrer Vernietung oder Verschweissung mit den alten Zuggliedern künstlich gestreckt wurden.
Die Erfindung liegt in einer besonderen Verwendung künstlich vorgespannter Eisenteile bei der Herstellung von eisernen Trägern, um auch bei diesen Trägern eine höhere Belastbarkeit erreichen zu können.
Auf der Zeichnung ist die Erfindung durch ein Ausführungsbeispiel veranschaulicht. Es zeigen Fig. 1 einen aus Stehblech, Gurtplatten und Winkeleisen bestehenden Doppel-T-Träger in Ansicht und Fig. 2 im Querschnitt.
Gemäss der Erfindung werden die den Träger bildenden Teile, das Stehblech 1, die Gurtplatten 2 und die Winkeleisen 3 in richtiger gegenseitiger Anordnung, jedoch noch nicht miteinander verbunden, zweckmässig gemeinsam in einer der Richtung der zukünftig wirkenden Last entgegengesetzten Richtung durchgebogen, wodurch in ihnen den späteren Belastungsspannungen entgegenwirkende Spannungen entstehen. Die Durchbiegung hat dabei nur so weit zu erfolgen, dass die zulässigen Spannungen nicht überschritten werden. In diesem Zustand werden die Teile durch Nietung, Verschweissung od. dgl. fest miteinander verbunden und die Vorrichtungen, wenn sie zur künstlichen Erzeugung der inneren Spannungen gedient haben, wieder entfernt.
Der in dieser Weise hergestellte, gekrümmte Träger besitzt nunmehr eine gegenüber derjenigen des normalen, ohne innere Gegenspannungen hergestellten Trägers wesentlich erhöhte Steifigkeit und Tragfähigkeit.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Iron girder.
It is known to use artificially prestressed iron inserts for the purpose of better utilization of the building materials in reinforced concrete construction. It is also not new, when reinforcing iron trusses using a sheathing made of reinforced concrete for the compression members, to reinforce the tension members with additional irons that were artificially stretched before being riveted or welded to the old tension members.
The invention lies in a particular use of artificially pre-stressed iron parts in the production of iron girders in order to be able to achieve a higher load capacity with these girders as well.
In the drawing, the invention is illustrated by an embodiment. 1 shows a view of a double T-beam consisting of a standing plate, belt plates and angle iron, and FIG. 2 shows a cross-section.
According to the invention, the parts forming the carrier, the standing plate 1, the belt plates 2 and the angle iron 3 in the correct mutual arrangement, but not yet connected to one another, are expediently bent together in a direction opposite to the direction of the future acting load, whereby the later stress stresses counteracting stresses arise. The deflection only has to take place so far that the permissible stresses are not exceeded. In this state, the parts are firmly connected to one another by riveting, welding or the like, and the devices are removed again if they served to artificially generate the internal stresses.
The curved beam produced in this way now has a significantly increased rigidity and load-bearing capacity compared to that of the normal beam produced without internal counter-stresses.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT139335T | 1933-06-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
AT139335B true AT139335B (en) | 1934-11-10 |
Family
ID=3640644
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT139335D AT139335B (en) | 1933-06-06 | 1933-06-06 | Iron girder. |
Country Status (1)
Country | Link |
---|---|
AT (1) | AT139335B (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE856046C (en) * | 1950-04-12 | 1952-11-17 | Erhard Hartsch | Sheet metal support with I-profile, especially for floor slabs |
DE1151194B (en) * | 1960-06-25 | 1963-07-04 | Linkleters Patent Ship Fitting | Shore or ladder |
DE1288287B (en) * | 1959-01-21 | 1969-01-30 | Cape Steel Construction Compan | Method for prestressing a portal frame or the like by elastic deformation |
EP0246560A2 (en) * | 1986-05-23 | 1987-11-25 | Arbed S.A. | Manufacturing method of prestressed steel girder and achieved girders |
DE10259584A1 (en) * | 2002-04-04 | 2004-07-15 | Gerhards, Karl, Dipl.-Ing. | Manufacturing method for steel flexure beam e.g. for high-speed train track carrier or bridge structure, has pre-stressed base profile combined with plate for completing beam cross-sectional profile |
DE10332633B4 (en) * | 2003-07-18 | 2007-10-25 | Audi Ag | Support column for a vehicle body frame |
-
1933
- 1933-06-06 AT AT139335D patent/AT139335B/en active
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE856046C (en) * | 1950-04-12 | 1952-11-17 | Erhard Hartsch | Sheet metal support with I-profile, especially for floor slabs |
DE1288287B (en) * | 1959-01-21 | 1969-01-30 | Cape Steel Construction Compan | Method for prestressing a portal frame or the like by elastic deformation |
DE1151194B (en) * | 1960-06-25 | 1963-07-04 | Linkleters Patent Ship Fitting | Shore or ladder |
EP0246560A2 (en) * | 1986-05-23 | 1987-11-25 | Arbed S.A. | Manufacturing method of prestressed steel girder and achieved girders |
EP0246560A3 (en) * | 1986-05-23 | 1989-11-15 | Arbed S.A. | Manufacturing method of prestressed steel girder and achieved girders |
DE10259584A1 (en) * | 2002-04-04 | 2004-07-15 | Gerhards, Karl, Dipl.-Ing. | Manufacturing method for steel flexure beam e.g. for high-speed train track carrier or bridge structure, has pre-stressed base profile combined with plate for completing beam cross-sectional profile |
DE10332633B4 (en) * | 2003-07-18 | 2007-10-25 | Audi Ag | Support column for a vehicle body frame |
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