Abstracts A tiny TLD was specially designed and manufactured to investigate its effectiveness on mitigating the wind-induced responses of a 243-meter-high solar tower by using wind tunnel tests based on an elastic test model. First, an elastic test model of the solar tower was made, and its structural parameters, including natural frequency, the first three mode shapes and structural damping ratio, were identified. Second, six types of tiny TLDs with different inner diameters (9, 10, 11, 12, 13 and 14 ​mm) were designed and manufactured, and the natural frequency and sloshing damping ratio of water in these tiny TLDs were identified to compare them with the theoretical values. The results show the measured and theoretical natural frequencies agree well with each other, while the measured sloshing damping of water is much larger than the theoretical value. Then, a series of wind tunnel tests were carried out to obtain the wind-induced responses of the solar tower. The effectiveness of TLD on mitigating the wind-induced responses of the solar tower was systematically investigated based on a series of parametric studies. The results show the wind-induced responses in the cross-wind and along-wind directions, including the acceleration at the top, the shear and moment at the bottom, can all be significantly reduced by the tiny TLDs with optimized parameters. It seems that the efficiency of the TLDs at the vortex-induced vibration critical wind velocity is significantly higher than that at the design wind velocity. In addition, the parametric studies indicate that the effectiveness of the TLDs is considerably sensitive to the frequency ratio, the height of the TLDs and the mass ratio.

中文翻译：

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基于弹性风洞试验的微型调谐液体阻尼器减轻圆柱形太阳能塔风致响应的有效性

摘要 一个微型 TLD 是专门设计和制造的，通过基于弹性测试模型的风洞测试，研究其在减轻 243 米高的太阳能塔的风致响应方面的有效性。首先，建立了太阳能塔的弹性试验模型，确定了其结构参数，包括固有频率、前三种振型和结构阻尼比。其次，设计和制造了六种不同内径（9、10、11、12、13和14mm）的微型TLD，并确定了这些微型TLD中水的固有频率和晃荡阻尼比进行比较与理论值。结果表明，测量的和理论的固有频率相互吻合，而实测水的晃荡阻尼远大于理论值。然后，进行了一系列风洞试验，以获得太阳能塔的风致响应。基于一系列参数研究，系统研究了 TLD 在减轻太阳能塔风致响应方面的有效性。结果表明，具有优化参数的微小 TLD 可以显着降低侧风和顺风方向的风致响应，包括顶部的加速度、底部的剪切和力矩。似乎TLD在涡激振动临界风速下的效率明显高于设计风速下的效率。此外，