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为了分析结构阻尼比对单管塔风荷载计算的影响,本文进行了阻尼比不同取值时风振系数的计算对比。结果表明风振系数随着结构阻尼比的增加而显著下降。然后根据上海某单管塔实测得到的阻尼比与规范规定的阻尼比取值,分别对该单管塔风荷载进行了计算对比。实测的阻尼比大于规范规定的取值,相应计算得到的风荷载也明显降低。这给单管塔的优化设计提供了参考依据。
In order to analyze the influence of the structural damping ratio on the wind load calculation of a single pipe tower, the calculation comparison of the wind vibration coefficient with different damping ratios is carried out. The results show that the wind vibration coefficient decreases significantly with the increase of the structural damping ratio. Then, based on the measured damping ratio of a single tube tower in Shanghai and the specified damping ratio of the specifications, the wind load of the single tube tower was calculated and compared. The actually measured damping ratio is greater than the value specified by the specification, and the corresponding calculated wind load is also significantly reduced. This provides a reference for the optimal design of a single tube tower.