| Title |
Aerodynamic characteristics of Long-Span Bridges under Actively Generated Turbulences |
| Keywords |
active turbulence generator;wind tunnel test;aerodynamic admittance function;aerodynamic force;self-excited force;buffeting response;능동 난류 발생장치;풍동실험;공력 어드미턴스 함수;공기력;비정상공기력;버페팅 응답 |
| Abstract |
The main purpose of this study is to investigate the affect of various turbulence properties on aerodynamic characteristics of twin box bridge section. To achieve this goal, active turbulence generator which successfully simulated various target turbulences was developed in the wind tunnel. From the wind tunnel tests, turbulence integral length scale did not affect on the aerodynamic forces and flutter derivatives except for the A, curve. Turbulence intensity gave slight effect on the unsteady aerodynamic force, but turbulence integral length scale did not affect the self-excited forces except vertical direction component. |