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Aeroelastic model design and sensitivity analysis of a complicated steel truss arch tower to skew incident winds based on wind tunnel tests
Journal of Wind Engineering and Industrial Aerodynamics ( IF 4.8 ) Pub Date : 2021-05-19 , DOI: 10.1016/j.jweia.2021.104646
Ling Yao Li , Shi Chang He , Xu Hui He

An aeroelastic model design method of a complicated steel truss arch tower was proposed and the response features subjected to skew incident wind forces were presented via experimental approach. At the geometric scaling of 1:40, the bars of aeroelastic model were designed and manufactured with scaled appearance, of which the rigidities are scaled based on the classification grouping to the dimensions and weights are compensated. The buckling analysis and checking calculation of members’ slenderness ratio were carried out. Wind tunnel tests on the completed stage and two key construction stages were conducted with various skew incident angles. Otherwise, the sensitivity coefficient of the y directional extreme displacement for the completed tower in turbulent flow was analyzed. The results show that the wind load in y direction has much more effect on the structure and the wind induced responses meet the design requirements. The maximum y directional extreme displacement at the reference wind speed appears within the range of wind incident angles 0°~30°. The decrease trend of the y directional extreme displacement of the completed tower in turbulent flow in the wind incident angle range of 30°~80° is bigger than that in other angles.



中文翻译:

基于风洞试验的复杂钢桁架拱塔斜入射风的气动弹性模型设计与敏感性分析

提出了一种复杂的钢桁架拱塔气动弹性模型设计方法,并通过实验方法给出了斜入射风力作用下的响应特征。以1:40的几何比例缩放,设计并制造了具有比例外观的气动弹性模型杆,其中,根据分类分组对刚度进行了比例缩放,并补偿了尺寸和重量。进行了构件细长比的屈曲分析和校核计算。在完成阶段和两个关键施工阶段的风洞试验中,采用了各种倾斜入射角。否则,y的灵敏度系数分析了完整塔在湍流中的方向极限位移。结果表明,y方向的风荷载对结构的影响更大,风致响应满足设计要求。在参考风速下最大y方向极端位移出现在风入射角0°〜30°的范围内。在风入射角为30°〜80°时,湍流中完成塔的y向极限位移的减小趋势大于其他角度。

更新日期:2021-05-19
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