Given their dynamic characteristics,inclined stay cables are vulnerable to excitations by wind.Dry inclined cable galloping is an aerodynamic instability phenomenon of bridge stay cables under no precipitation condition.Its occurrence has been observed in a few wind tunnel tests.Thus,although the existence of the phenomenon has not been fully confirmed from bridge site,it should not be disregarded due to the possible satisfaction of its onset conditions in field and the resulted serious consequence.At present,the mechanisms of dry inclined cable galloping are not completely understood yet.Based on the current knowledge,it is believed that its occurrence is attributed to three factors: a) Emergence of critical Reynolds number regime which causes the drag crisis and steady non-zero lift; b) Mitigation of conventional Karman vortex shedding; and c) Spanwise correlation of aerodynamic forces along cable length.