Abstract
The aerodynamic device on suspension bridge tower standing isolatedly during construction is investigated in order to suppress the vortex-induced oscillation. The plate attached on both wandward and leeward surface of two tandem tower columns effectively stabilizes the structure. It is known that the optimum install length and location of the device along the column is only 10% of tower height at the crest of tower. It proves that the aerodynamic 3-D effect near the crest is controlling the whole response characteristics of tower.
