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首页> 外文期刊>Journal of Wind Engineering and Industrial Aerodynamics: The Journal of the International Association for Wind Engineering >Wind characteristics along a bridge catwalk in a deep-cutting gorge from field measurements
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Wind characteristics along a bridge catwalk in a deep-cutting gorge from field measurements

机译：来自田间测量的深切割峡谷沿桥式狭缝的风特点

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This paper investigates the wind characteristics along the bridge catwalk during construction in a deep-cutting gorge. Five sets of anemometers are installed in the catwalk to collect field measurements. The mean wind characteristics, including wind speed and wind direction, are first investigated. The influence of local topography on the mean wind characteristics is identified. Moreover, it is also found that the recorded wind data obtained from the deep-cutting gorge have strong nonstationary characteristics. Based on the traditional stationary wind speed model and a nonstationary wind speed model, turbulence wind characteristics, such as turbulence intensity, spectral analysis and turbulence length scale, are comprehensively analyzed and compared. The effect of local topography on the turbulence wind characteristics is also examined. Additionally, the change laws of turbulence intensity and turbulence length scale along the bridge catwalk are derived. The estimated auto-spectral density functions of all three turbulence components are in a good agreement with the Von Karman forms.
机译：本文在深切割峡谷施工期间调查沿桥狭窄的风特征。潮汐中安装了五组风量计以收集现场测量。首先研究了平均风特性，包括风速和风向。鉴定了局部地形对平均风特征的影响。此外，还发现从深切峡获得的记录风数据具有强烈的非间抗特征。基于传统的固定式风速模型和非间断风速模型，湍流风特性，诸如湍流强度，光谱分析和湍流长度尺度，并进行了比较。还研究了局部地形对湍流风特性的影响。另外，导出了沿桥式潮汐行程的湍流强度和湍流长度尺度的变化规律。所有三个湍流组件的估计的自动频谱密度函数与Von Karman形式良好。

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