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本文进行了合肥电视塔风振响应分析,探讨了电视塔人体舒适度设计准则。计算表明,电视塔上塔楼的加速度响应大大超出了容许的最大加速度限值。因此,利用塔上60t重的生活、消防用水箱作为调频质量阻尼器(TMD)。通过在频域内大量的TMD参数研究,确定TMD的优化参数。研究结果表明,具有最优参数TMD可以显著提高电视塔的人体舒适度性能,上塔楼的加速度响应下降了49%。在此基础上,本文提出了TMD优化参数的选择路线,结合受控和未控结构的响应比与频率比和TMD阻尼比的关系曲线,采用图解法确定了满足减振要求的TMD优化参数。
This paper analyzes the wind-induced response of Hefei TV Tower, and discusses the design criteria of human comfort for television tower. Calculations show that the acceleration response of the tower on the tower significantly exceeds the maximum allowable acceleration limit. Therefore, the use of 60t heavy tower life, fire water tank as the FM quality damper (TMD). By studying a large number of TMD parameters in the frequency domain, the optimal parameters of TMD are determined. The results show that TMD with the optimal parameters can significantly improve the human comfort performance of the tower, and the acceleration response of the tower is reduced by 49%. Based on this, the paper presents the choice of TMD optimization parameters, and combines TMD and TMD damping ratio curves of controlled and uncontrolled structures to determine the TMD optimization parameters that meet the requirements of damping.