Solid wall beam
A solid wall girder is a horizontal girder made of a vertical, non-perforated ( full-walled ) web with horizontal upper and lower chords ( flanges ) , which is used in particular for steel bridges, steel storey construction and crane systems . Solid wall girders can be rolled steel profiles with standardized cross-sections or sheet metal girders that are composed of individual parts (mostly welded, less often screwed, often also riveted in the past) and whose dimensions (sheet thickness, height of the web, width of the belt plates) can be selected according to the structural requirements . Sheet metal girders are often stiffened and reinforced by welded-on stiffeners and ribs. The height of your bridge can be designed variably.
In bridges, solid wall girders are usually used with the carriageway on top so as not to restrict the view of the user. In the case of railway bridges with short spans, there are also trough bridges with tracks running between the girders.
Solid wall girders are also used in timber construction, e.g. B. used as a carrier of hall roofs, in aluminum structures and in reinforced concrete bridges, but where the box girder is usually the cheaper option.
In structural engineering , solid wall girders are viewed as beams and are dimensioned according to the beam theory . Unlike with trusses , the calculation of which focuses on the tensile and compressive forces on the individual bars of the truss, with solid wall girders, as with all beams, longitudinal, bending and transverse deformations and the bending line must be calculated.
Large bridges with solid wall girders are z. B. the
- Kennedy Bridge (1949) in Bonn with a span of 196 m,
- Theodor-Heuss-Brücke (A 6) (1950) near Frankenthal (Pfalz) with 161 m,
- Rudolf von Habsburg Bridge (1971), which spans the Rhine near Germersheim with a span of 165 m.
- Oska Büttner, Erhard Hampe: building structural support structure. Ernst & Sohn, Berlin 1985, ISBN 3-433-01025-0 , p. 181
- Steel storey construction . (PDF; 2.8 MB) Ed. Bauen mit Stahl e. V., Düsseldorf 2007, p. 10
- Karsten Geissler: Bridge Manual. Ernst & Sohn, Berlin 2014, ISBN 978-3-433-02903-9 , p. 611