Mechanical Performance Analysis and Parametric Study of a Self-Anchored Suspension Bridge with Ultra-Wide Double-Sided Steel Box Girder

Table 1

The differences between the ultra-wide double-sided steel box girders and common box girders.

	Ultra-wide double-sided steel box girder	Common steel box girder
Deformation	The deformation of deck center is greater than the sides.	The deformation of deck at each box center is greatest.
Top plate stress	There are obvious shear lag effect and fatigue stress.	The shear lag effect is slightly smaller than the former.
Torsional performance	It has excellent torsional resistant performance.	It also has good torsional resistant performance, but it is smaller than the former.
Design focus	The shear lag effect, fatigue damage, and crossbeams.	The overturning resistance, stiffening ribs, and crossbeams.