​Pylons for cable-stayed bridge and suspension bridge generally are in slender figure, which are vulnerable to the wind load. The pylons are especially vulnerable when stood alone in the erection stage, prior to the installation of cables, due to their low structural damping properties. Wind force tests are conducted to provide wind force coefficients of pylon legs or whole pylon.

▣ Aerodynamic stability: vortex-induced vibration, flutter, galloping
▣ Base shear force, base overturning moment, base torsional moment
▣ Wind force of pylon legs: Drag, lift, pitching moment coefficients
▣ Wind force of whole pylon: Drag, lift, torsional moment, overturning moment coefficients
▣ Aerodynamic optimization of the shape of pylon leg to increase aerodynamic stability and to decrease static deformation due to wind