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A
P
6400.8 mm
304.8
762
927.1
812.8
727.1
85.7
927.1
927.1
927.1
A
(a)
Elevation
1524 mm
181
184.2×19.6
758.8×8.5
979.1
362×19.7
(b)
Cross section A-A
Figure 7.1 General layout and dimensions of composite girder G1.
investigate the ultimate moment resistance and ductility of the composite
girder. The structural steel used in the test was a high-strength steel
HPS70Whaving a nominal yield stress of 482 MPa (70 ksi). The general lay-
out and dimensions of composite plate girder G1 are shown in
Figure 7.1
.
The composite plate girder had an overall length of 12,801 mm and a length
between supports equal to 12,192 mm. The steel plate girder had a web of
758.8
8.5 mm, an upper flange of 84.2
19.6 mm, and a lower flange of
362
19.7 mm. The flange and web portions of the steel plate girder of G1
had yield and ultimate tensile stresses of 556, 700 MPa and 583, 656 MPa,
respectively. The composite plate girder had an overall height of 979 mm.
The web of the steel plate girders was strengthened by stiffeners as shown in
Figure 7.1
to prevent shear failure. The concrete slab had a width of
1524 mm and a depth of 181 mm. The measured concrete cylinder strength
of G2 was 30.5 MPa. The concrete slab had reinforcement steel bars, as
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