Steel truss bridges - Computational Analysis and Design of Bridge Structures - page 321

Figure 10.28 3D Francis Scott Key Bridge model in detail—floor system.
Live load analysis for four-lane HS-20-44 is conducted in this example.
Figures 10.32 and 10.33 show the combined dead and live load results on half
of a main truss.
10.7 3d IlluStrated exaMPleS —Shang xIn
BrIdge, ZhejIang, PeoPle'S rePuBlIc
of chIna
This recently constructed (2010) Shang Xin Bridge in Zhejiang, China
(shown in Figure 10.34), is considered as a half-through three-span contin-
uous steel semitruss bridge with minimum top bracing. The span lengths
are 62-100-62 m, and the total width is 30 m. The unique design of this
bridge is that the hinge connections are replaced by semirigid connec-
tions on both truss panels. So, it behaves more like a frame than a truss
even though its members maintain the triangular shape in geometry as a
truss bridge does. However, to meet safety requirement, nodal and middle
segments of members are designed as a hinge-connected structure with
only axial forces, whereas end segments of truss members are designed