Precast Steel Segmental Box Girder Formwork For Bridge

Generally, steel box girder is connected by the top plate, bottom plate, web
plate, diaphragm, mediastinum plate and stiffener through all welding. The top
plate is an orthotropic bridge panel composed of a cover plate and a
longitudinal stiffener.

The thickness of each plate of a typical steel box girder can be: the thickness
of the cover plate is 14mm, the thickness of the longitudinal U-shaped rib is
8mm, the width of the upper mouth is 300mm, the width of the lower mouth is
170mm, the height is 280mm, and the spacing is 620mm. The bottom plate is 10mm
thick, and the longitudinal U-shaped stiffener ribs; Oblique web thickness
14mm, middle web thickness 9mm; Diaphragm spacing 4.0m, thickness 12mm; Beam
height 2 ~ 3.5m.

Steel box beam is a common structural form used in engineering. In order to
study the influence of diaphragms spacing on the distortion of simply supported
steel box girder under concentrated load, the distortion effect and rigid
torsion effect of simply supported steel box girder with different number of
diaphragms were compared under concentrated load, and the curve of maximum
distortion effect with the number of diaphragms was obtained. The concentrated
load is applied to the top of the box girder web, and the load decomposition
method is used to calculate the four working conditions: distortion, rigid
torsion, symmetrical bending and eccentric load.

Minimum Order: 1 tons

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