| Title |
Evaluation of Wind Force Coefficients of a Box-Type Girder Bridge with Noise Barriers |
| Authors |
정승환(Jeong, Seung Hwan) ; 이영기(Lee, Youngki) |
| DOI |
https://doi.org/10.12652/Ksce.2018.38.5.0627 |
| Keywords |
방음벽;박스형 교량;전산유체해석;풍력계수;마찰항력계수 Noise barrier;Box-type bridge;Computational fluid dynamics;Wind force coefficients;Friction drag force coefficients |
| Abstract |
In the study, computational fluid dynamics analysis was performed to estimate wind force coefficients for a box-type concrete girder bridge under the influence of wind. The drag, lift and pitching moment coefficients were obtained for the bridge section without noise barrier and compared with those of the bridge section with noise barriers of various heights. The shear stress transport $k-{\omega}$ turbulence model was employed to estimate the wind force coefficients, and the contribution of the friction drag force to the total drag force was investigated. It was found from the study that the drag force coefficients increased as the height of noise barrier increased when a wind blew horizontally, and that the contribution of the friction drag force was highest for the bridge section without noise barrier. It is concluded that the impact of the height of noise barriers should be considered in the design of bridges, and the friction force played an important role in evaluating wind forces on bridges. |