湖南大学学报（自然科学版）2016，Vol.43Issue(11)：103-111,9.
高墩多塔斜拉桥沿桥轴向风特性实测分析∗
Wind Characteristics along Axis Bridge Measured at Multi-pylon Cable-stayed Bridge Site with High Piers
摘要
Abstract
In order to study the wind characteristics along bridge axis at multi-pylon cable-stayed bridge site with high piers in mountainous terrain,two three-dimensional anemometers and two two-dimensional anemometers were installed on the bridge deck.The time-varying mean wind speeds of the non-stationary winds were obtained by wavelet analysis method.The mean wind and turbulence characteristics measured along the bridge axis were analyzed.The results demonstrate that the mean wind speeds and wind direction changed in the same trend along the bridge axis.The turbulence characteristics measured along the bridge axis,such as turbulence intensities,gust factors,and integral scales also changed in the same trend. Meanwhile,the mean longitudinal turbulence intensities were higher than the values recommended by wind resistant design specification for highway bridges,while the values of longitudinal turbulent wind spectrum measured along the bridge axis were lower than the specification spectrum at low frequencies and close to the specification spectrum at high frequencies.The values of vertical turbulent wind spectrum measured a-long the bridge axis were lower than the specification spectrum at low frequencies and not close well to the specification spectrum at high frequencies.关键词
山区地形/小波分析/非平稳风速模型/时变平均风速/现场实测Key words
mountainous terrain/wavelet analysis/non-stationary wind speed model/time varying mean wind speed/field measurement分类
交通工程引用本文复制引用
辛亚兵,邵旭东,刘志文,贾亚光,丁冬..高墩多塔斜拉桥沿桥轴向风特性实测分析∗[J].湖南大学学报（自然科学版）,2016,43(11):103-111,9.基金项目
国家自然科学基金资助项目(51478180),National Natural Science Foundation of China(51478180) （51478180）
