Civil Engineering Reference
In-Depth Information
Figure 8:
The final structure and its equipment.
The welded steel girders from the prefabricated composite beams are made of S355
J2+N and have variable height - 1200 mm in the field and 1500 mm at the supports. Two
types of section were introduced: the middle part of the steel girder is composed only of a
bottom flange and a web with steel dowel cuttings on top and on the end zones, of each 6
meters, a slender U-shaped upper flange having a thickness of 12 mm was additionally intro-
duced (“Fig. 9”). The steel plates of the upper flange were cold bended and have the role to
increase the number of the steel dowels in order to transfer the shear effect.
The composite dowels require a cutting geometry on the upper part of the steel (“Fig. 9”,
“Fig. 10”) using a special form adapted to the requirements given by fatigue, reinforcement
and concrete.
Figure 9:
The steel girder type sections; Steel girders in the workshop; the cutting line
geometry of the composite dowels.
Figure 10:
10 The steel girder type sections; the end steel girders detail and the transition
detail between the two types of section.
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