DE1255273B - Welded box girder and its manufacturing process - Google Patents
Welded box girder and its manufacturing processInfo
- Publication number
- DE1255273B DE1255273B DEC28966A DEC0028966A DE1255273B DE 1255273 B DE1255273 B DE 1255273B DE C28966 A DEC28966 A DE C28966A DE C0028966 A DEC0028966 A DE C0028966A DE 1255273 B DE1255273 B DE 1255273B
- Authority
- DE
- Germany
- Prior art keywords
- walls
- box
- stiffening ribs
- ribs
- box girder
- 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.)
- Pending
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C3/06—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with substantially solid, i.e. unapertured, web
- E04C3/07—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with substantially solid, i.e. unapertured, web at least partly of bent or otherwise deformed strip- or sheet-like material
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
- E04C2003/0408—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section
- E04C2003/0413—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section being built up from several parts
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
- E04C2003/0426—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section
- E04C2003/043—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section the hollow cross-section comprising at least one enclosed cavity
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
- E04C2003/0443—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section
- E04C2003/0465—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section square- or rectangular-shaped
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Rod-Shaped Construction Members (AREA)
Description
Geschweißter Kastenträger und Verfahren zu seiner Herstellung Die Erfindung bezieht sich auf einen geschweißten Kastenträger und auf ein Verfahren zu seiner Herstellung.Welded box girder and process for its manufacture Die The invention relates to a welded box girder and to a method for its manufacture.
Geschweißte Kastenträger als Bauelemente sind bekannt, die einen rechteckigen, insbesondere auch quadratischen Querschnitt haben. Diese Bauelemente wurden bisher aus vier Blechstreifen und anderen Teilen zusammengeschweißt. Die Schweißnähte, die die Teile eines solchen Bauelements miteinander verbinden, mußten nacheinander hergestellt werden.Welded box girders are known as structural elements that have a rectangular, in particular also have a square cross-section. These components were previously welded together from four sheet metal strips and other parts. The welds, which connect the parts of such a component to one another, had to be one after the other getting produced.
Ein derartiges Herstellungsverfahren ist so teuer, daß man gewalzte Doppel-T-Träger als Bauelemente bevorzugte. Es kommt noch hinzu, daß Kastenträger meist mit quer zur Längsrichtung angeordneten Versteifungsrippen versehen sind, was die Schweißarbeit weiter komplizierte und verteuerte und auch das Gewicht erhöhte. Im Bauwesen sind daher Kastenträger trotz ihrer statisch idealen Eigenschaften fast überall durch die Doppel-T-Träger verdrängt.Such a manufacturing process is so expensive that it is rolled Double T-beams preferred as structural elements. There is also the fact that box girders are usually provided with stiffening ribs arranged transversely to the longitudinal direction, which further complicated and expensive the welding work and also increased the weight. In construction, therefore, box girders are almost ideal despite their statically ideal properties displaced everywhere by the double T-beams.
Der Kastenträger der Erfindung ist nun dadurch besonders billig in der Herstellung und daher durchaus geeignet an die Stelle der Doppel-T-Träger zu treten, daß die Versteifungsrippen beidseitig verkürzt sind und mit ihren Frontflächen an den Innenflächen der ungerippten Wände anliegen, die außen bündig mit den Kanten der gerippten Wände sind und mit ihnen durch außenliegende Schweißnähte verbunden sind.The box girder of the invention is now particularly cheap in the production and therefore perfectly suitable in place of the double-T-beams occur that the stiffening ribs are shortened on both sides and with their front surfaces rest against the inner surfaces of the unribbed walls, which are flush with the edges on the outside of the ribbed walls and connected to them by external welds are.
Die Versteifungsrippen haben dabei zweckmäßig V-förmigen Querschnitt. Sie können aus dem Blech des Streifens herausgedrückt sein, so daß Schweißarbeit für die Versteifungsrippen entfällt.The stiffening ribs expediently have a V-shaped cross section. They can be pushed out of the sheet metal of the strip so that welding work for the stiffening ribs is not applicable.
Ein derartiger Kastenträger wird erfindungsgemäß dadurch hergestellt, daß die vier Wände, von denen zwei mit den beschriebenen Versteifungsrippen versehen sind, zu einem Rohr zusammengestellt werden, wobei die gerippten Wände und die Rippen auf diesen einander gegenüberliegen und daß dann am Kasten bei einem einzigen Durchgang durch die Schweißmaschine alle vier Schweißnähte gleichzeitig hergestellt werden.Such a box girder is produced according to the invention by that the four walls, two of which are provided with the stiffening ribs described are to be assembled into a tube, with the ribbed walls and the ribs on these opposite each other and that then on the box in a single pass all four weld seams can be produced at the same time by the welding machine.
Die Zeichnung zeigt beispielsweise schematisch und teilweise im Schnitt eine Ausführungsform eines Bauelementes der Erfindung und zwar zeigt F i g. 1 eine perspektivische Ansicht mit teilweise weggebrochenen Wänden, F i g. 2 einen Querschnitt und F i g. 3 einen Längsschnitt.The drawing shows, for example, schematically and partially in section an embodiment of a component of the invention, namely FIG. 1 one perspective view with partially broken away walls, FIG. 2 a cross section and F i g. 3 a longitudinal section.
Der Kastenträger setzt sich aus vier Blechstreifen zusammen, von denen zwei (1 und 2), vorher in einer nicht dargestellten und beschriebenen Maschine mit V-förmigen Querrippen 4 bzw. 5 versehen wurden, die im rechten Winkel zu den Längsseitenkanten verlaufen. Die Rippen sind beiderseits um je eine Blechdicke gekürzt, so daß ihre Frontflächen 4A, 5A an den Innenflächen 6A und 7A der Streifen 6 und 7 anliegen, die mit ihren Außenflächen 6B, 7B bündig mit den Kanten 1 A, 2 A der Streifen 1 und 2 sind.The box girder is made up of four sheet metal strips, two of which (1 and 2) were previously provided with V-shaped transverse ribs 4 and 5 in a machine not shown and described, which run at right angles to the longitudinal side edges. The ribs are shortened on both sides by a sheet metal thickness each so that their front surfaces 4A, 5A rest on the inner surfaces 6A and 7A of the strips 6 and 7, the outer surfaces 6B, 7B of which are flush with the edges 1 A, 2 A of the strips 1 and 2 are.
Alle vier Streifen 1, 2, 6, 7 werden dann über eine Walzenstraße 8 (F i g. 2) durch eine Schweißmaschine gezogen, die die Schweißnähte 9, 10, 11, 12 gleichzeitig herstellt.All four strips 1, 2, 6, 7 are then passed through a roller train 8 (Fig. 2) pulled by a welding machine, which welds 9, 10, 11, 12 manufactures at the same time.
Der so in einem Schweiß-Arbeitsgang hergestellte Kastenträger ist durch die Rippen 4 und 5 versteift. Mit diesem billigen Verfahren hergestellte Kastenträger können wirtschaftlich mit dem Doppel-T-Träger in Wettbewerb treten. Die Rippen 4, 5 können statt V-Form auch U-Form mit geneigten Wänden haben.The box girder produced in this way in one welding operation is stiffened by ribs 4 and 5. Box girders made with this cheap process can compete economically with the double T-beam. The ribs 4, 5 can also have a U-shape with inclined walls instead of a V-shape.
Claims (4)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1255273X | 1962-01-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1255273B true DE1255273B (en) | 1967-11-30 |
Family
ID=10885728
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEC28966A Pending DE1255273B (en) | 1962-01-23 | 1963-01-22 | Welded box girder and its manufacturing process |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE1255273B (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE58141C (en) * | R. MANNESMANN in Remscheid-Bliedinghausen | Beams and supports made from seamless tubes | ||
US2125691A (en) * | 1933-11-22 | 1938-08-02 | Budd Edward G Mfg Co | Sheet metal beam |
US2125690A (en) * | 1933-11-02 | 1938-08-02 | Budd Edward G Mfg Co | Box section beam |
-
1963
- 1963-01-22 DE DEC28966A patent/DE1255273B/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE58141C (en) * | R. MANNESMANN in Remscheid-Bliedinghausen | Beams and supports made from seamless tubes | ||
US2125690A (en) * | 1933-11-02 | 1938-08-02 | Budd Edward G Mfg Co | Box section beam |
US2125691A (en) * | 1933-11-22 | 1938-08-02 | Budd Edward G Mfg Co | Sheet metal beam |
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