DE880933C - Reinforcing steel - Google Patents
Reinforcing steelInfo
- Publication number
- DE880933C DE880933C DEK11092A DEK0011092A DE880933C DE 880933 C DE880933 C DE 880933C DE K11092 A DEK11092 A DE K11092A DE K0011092 A DEK0011092 A DE K0011092A DE 880933 C DE880933 C DE 880933C
- Authority
- DE
- Germany
- Prior art keywords
- steel
- reinforcing steel
- cross
- reinforced concrete
- moment
- 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
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
- E04C5/02—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Rod-Shaped Construction Members (AREA)
Description
Betonbewehrungsstahl Die bisherige Art der Bewehrung von Stahlbeton mit Einlagen, deren Ouerschnittsfläche auf ganzer Länge gleichbleibend ist, bedingt in verschiedenen Fällen einen wesentlichen Mehrverbrauch an Stahl. So ist es z. B. nach den wohlbegründeten »Bestirnmungen. des Deutschen Ausschusses für Stahlbeton« vorgeschrieben, daß die zur Deckung der Feldmomente erforderlichen Stahleinlagen bis zu den Stützen durchzuführen sind. Da die Ouerschnittsfläche des Einlagestahles nach dem größten Feldmoment bemessen werden muß, wird z. B. beim »Träger auf zwei Stützen«, der anteilmäßig im Stahlbeton vorherrscht, dadurch theoretisch ein Stahlmehrverbrauch von rund einem Drittel verursacht, denn die bei Gleichlast parabolische Momentenfläche erfährt eine Stahldeckung, die dem umschriebenen Rechtecke entspricht. Die zulässige Stahlspannung wird dabei ausschließlich im Mittelquerschnitt ausgenützt. Die Stahlverknappung und der Umstand, daß gewisse Stahlbetonkonstruktionsabmessungen immer wiederkehren (z. B. bei Wohnhausdecken), führten zu dem Gedanken, durch Herstellung und Verwendung von Bewehrungsstählen, bei denen die Größe ihrer Ouerschnittsflächen dem Momentenverlaufe weitestgehend angepaßt ist, den Stahlverbrauch zu senken.Concrete reinforcement steel The previous type of reinforcement for reinforced concrete with inlays, the cross-sectional area of which is constant over the entire length, conditionally in various cases a significant increase in steel consumption. So it is B. according to the well-founded "determinations. of the German Committee for Reinforced Concrete " prescribed that the steel inserts required to cover the field moments to be carried out up to the supports. Since the cross-sectional area of the steel insert must be measured according to the largest field moment, z. B. with the »carrier on two Supports «, which proportionally predominates in reinforced concrete, thus theoretically an increased consumption of steel caused by around a third, because the moment surface is parabolic with uniform load experiences a steel covering that corresponds to the circumscribed rectangle. The permissible Steel stress is only used in the middle cross-section. The steel shortage and the fact that certain reinforced concrete construction dimensions keep recurring (e.g. on house ceilings), led to the idea of manufacturing and using of reinforcing steel, in which the size of their cross-sectional areas depends on the moment is largely adapted to reduce steel consumption.
Diese Anpassung kann durch Walzen, Ziehen, Pressen od.. dgl. erfolgen.This adaptation can be done by rolling, pulling, pressing or the like.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEK11092A DE880933C (en) | 1951-08-24 | 1951-08-24 | Reinforcing steel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEK11092A DE880933C (en) | 1951-08-24 | 1951-08-24 | Reinforcing steel |
Publications (1)
Publication Number | Publication Date |
---|---|
DE880933C true DE880933C (en) | 1953-06-25 |
Family
ID=7213179
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEK11092A Expired DE880933C (en) | 1951-08-24 | 1951-08-24 | Reinforcing steel |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE880933C (en) |
-
1951
- 1951-08-24 DE DEK11092A patent/DE880933C/en not_active Expired
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