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Research Article

Nonlinear Optimization of Orthotropic Steel Deck System Based on Response Surface Methodology

Table 4

The most unfavorable loading locations and the most unfavorable stress or deflection locations for the six fatigue details.

Fatigue detailsThe most unfavorable stress or deflection locationsThe most unfavorable loading locations
Longitudinal distance from the transverse diaphragm plateTransverse distance from the centerline of the U-ribLongitudinal distance from the transverse diaphragm plateTransverse distance from the centerline of the U-rib

About 0.09 times of diaphragm plates spacing0.5 times the upper opening width of the U-ribAbout 0.09 times of diaphragm plates spacing (tensile)
About 0.25 times of diaphragm plates spacing (compressive)
0.5 times the upper opening width of the U-rib (tensile)
0.33 times the upper opening width of the U-rib (compressive)
Near the transverse diaphragm plateAbout 0.09 times of diaphragm plates spacing0.33 times the upper opening width of the U-rib
Near the transverse diaphragm plate0.5 times the upper opening width of the U-ribNear the transverse diaphragm plateAt the centerline of the U-rib
Near the transverse diaphragm plate0.5 times the upper opening width of the U-ribNear the transverse diaphragm plate0.33 times the upper opening width of the U-rib
Mid-span1.5 times the upper opening width of the U-ribMid-span0.17 times the upper opening width of the U-rib
Mid-spanAt the centerline of the U-ribMid-spanAt the centerline of the U-rib