DE1255273B - Welded box girder and its manufacturing process - Google Patents

Welded box girder and its manufacturing process

Info

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
Application number
DEC28966A
Other languages
German (de)
Inventor
William Graham Covan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JH Carruthers and Co Ltd
Original Assignee
JH Carruthers and Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by JH Carruthers and Co Ltd filed Critical JH Carruthers and Co Ltd
Publication of DE1255273B publication Critical patent/DE1255273B/en
Pending legal-status Critical Current

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)

Patentansprüche: 1. Kastenträger mit rechteckigem, insbesondere quadratischem Querschnitt und quer zur Längsrichtung angeordneten Versteifungsrippen, die von zwei gegenüberliegenden der vier Wände des Trägers in den Kasten hineinragen, d a d u r c h g e k e n n z e i c h n e t, daß die Versteifungsrippen (4, 5) beidseitig verkürzt sind und mit ihren Frontflächen (4 A, 5A) an den Innenflächen (6 A, 7A) der ungerippten Wände (6, 7) anliegen, die außen bündig mit den Kanten (1A, 2A) der gerippten Wände (1, 2) sind und mit ihnen durch außenliegende Schweißnähte (9, 10, 11, 12) verbunden sind. Claims: 1. Box girders with a rectangular, in particular square cross-section and transversely to the longitudinal direction arranged stiffening ribs which protrude from two opposite of the four walls of the girder into the box, characterized in that the stiffening ribs (4, 5) are shortened on both sides and with their Front surfaces (4 A, 5A) rest on the inner surfaces (6 A, 7A) of the unribbed walls (6, 7), which are flush with the edges (1A, 2A) of the ribbed walls (1, 2) and through them external welds (9, 10, 11, 12) are connected. 2. Kastenträger nach Anspruch 1, dadurch gekennzeichnet, daß die Rippen (4, 5) V-förnügen Querschnitt haben. 2. Box girder according to claim 1, characterized characterized in that the ribs (4, 5) have a V-shaped cross-section. 3. Verfahren zur Herstellung eines Kastenträgers nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die vier Wände (1, 2, 6, 7), von denen zwei (1, 2) mit Versteifungsrippen (4, 5) versehen sind, so zu einem Rohr zusammengestellt werden, daß die Wände (1, 2) mit den Versteifungsrippen (4, 5) und die Rippen (4, 5) selbst einander gegenüberliegen und daß dann am Kasten bei einem einzigen Durchgang durch eine Schweißmaschine alle vier Schweißnähte (9, 10, 11, 12) mit denen die vier Wände (1, 2, 4, 5) zusammengeschlossen werden, gleichzeitig hergestellt werden. 3. A method for producing a box girder according to claim 1 or 2, characterized in that the four walls (1, 2, 6, 7), two of which (1, 2) are provided with stiffening ribs (4, 5), so too be put together in a pipe that the walls (1, 2) with the stiffening ribs (4, 5) and the ribs (4, 5) themselves are opposite each other and that then on the box in a single pass through a welding machine all four welds (9, 10, 11, 12) with which the four walls (1, 2, 4, 5) are joined together, are produced at the same time. 4. Verfahren zur Herstellung der gerippten Streifen, die nach Anspruch 3 mit den ungerippten zu einem Rohr zusammengeschweißt werden, dadurch gekennzeichnet, daß die Versteifungsrippen (4, 5) einseitig aus dem Blechstreifen (2) ausgedrückt und anschließend an beiden Seiten gegenüber der Blechstreifenkante (2A) um eine Blechdicke gekürzt werden. In Betracht gezogene Druckschriften: Deutsche Patentschrift Nr. 58 141; USA.-Patentschriften Nr. 2125 690, 2 125 691.4. A method for producing the ribbed strips, which are welded together according to claim 3 with the non-ribbed to form a tube, characterized in that the stiffening ribs (4, 5) on one side from the sheet metal strip (2) and then expressed on both sides opposite the sheet metal strip edge ( 2A) can be shortened by one sheet thickness. Documents considered: German Patent No. 58 141; USA. Patent Nos. 2125 690, 2125691.
DEC28966A 1962-01-23 1963-01-22 Welded box girder and its manufacturing process Pending DE1255273B (en)

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)

* Cited by examiner, † Cited by third party
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
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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