An Experimental Investigation of Streamwise and Vertical Wind Fields on a Typical Three-Dimensional Hill
An Experimental Investigation of Streamwise and Vertical Wind Fields on a Typical Three-Dimensional Hill
复制标题
典型三维山体流向风场和垂直风场的实验研究
DOI：
10.3390/app10041463
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发表时间：
2020-02
影响因子：
2.7
通讯作者：
Xing Yuelong
中科院分区：
文献类型：
--
作者：
Shen Guohui;Yao Jianfeng;Lou Wenjuan;Chen Yong;Guo Yong;Xing Yuelong
为研究典型三维山体上的流向风场和垂直风场，进行了风洞试验。测量了山坡上典型位置的流向风速和垂直风速的平均值和湍流强度，并以等值线图的形式给出，以供设计参考。此外，在流向方向的平均风速的加速与代码进行了比较。最后，以跨接电缆的风偏为例，分析了在风振响应分析中如何考虑流向风场和垂向风场对风荷载的影响。结果表明，沿流向的加速效应在山顶处最为显著，且随高度的增加，风速的加速效应减小。总体而言，沿顺风中心线的风速增加沿着大于沿顺风中心线的风速增加沿着。在规范中，对于上游半高处结构的提速效应规定相对保守。垂直方向的平均风速中，位于上游半高处的风爬效应最显著。湍流强度较强的区域出现在山丘上下游两侧的山脚下。垂直风对跨接索的影响显著，其中风爬效应最为显著，在丘陵地形扰动风场中的结构设计中值得注意。
To study the streamwise and vertical wind fields on a typical three-dimensional hill, wind tunnel tests were performed. The mean values and turbulence intensities of the streamwise and vertical wind speeds of the typical positions above the hill were measured, and they are presented in the form of contour maps for design. Furthermore, the speed-up of the mean wind speeds in the streamwise direction was compared with codes. Finally, the windage yaw of a jumper cable was examined as an example of how to take into account the streamwise and vertical wind field influence on the wind load in the analysis of wind-induced responses. The results show that the most significant speed-up effect in the streamwise direction occurs on the hill crest, and the wind speed-up decreases with the increase of the height. Overall, the wind speed-up along the crosswind center line is larger than that along the along-wind center line of the hill. In the codes, the speed-up effect specified for the structure at half the height of the upstream side of the hill is relatively conservative. With regard to the mean wind speed in the vertical direction, the wind climbing effect located at half the height of the upstream side of the hill is the most significant. The area with the stronger turbulence intensity appears at the foot of the upstream and downstream sides of the hill. The influence of the vertical wind on the jumper cable is remarkable where the wind climbing effect is the most significant, which is worthy of attention in the design of the structure immersed in a hilly terrain-disturbed wind field.
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DOI：
10.1061/40700(2004)169
发表时间：
2004-05
期刊：
--
影响因子：
--
作者：
G. Bitsuamlak;T. Stathopoulos;C. Bédard
通讯作者：
G. Bitsuamlak;T. Stathopoulos;C. Bédard
影响因子：
4.3
作者：
A. A. Safaei Pirooz-A.;R. Flay
通讯作者：
A. A. Safaei Pirooz-A.;R. Flay
影响因子：
4.3
作者：
T. Ishihara;Y. Qi
通讯作者：
T. Ishihara;Y. Qi
DOI：
10.1016/s0167-6105(97)00007-x
发表时间：
1997
影响因子：
4.8
作者：
Hyun-Goo Kim;Choung-Mook Lee;Heechang Lim;N. Kyong
通讯作者：
Hyun-Goo Kim;Choung-Mook Lee;Heechang Lim;N. Kyong
DOI：
10.2514/6.2004-1005
发表时间：
2004-01
期刊：
--
影响因子：
--
作者：
R. Derickson;J. Peterka
通讯作者：
R. Derickson;J. Peterka