| 李春祥,熊学玉.地震作用下基于ADMF和系统参数组合的最优MTMD[J].计算力学学报,2002,19(3):291~298 |
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| 地震作用下基于ADMF和系统参数组合的最优MTMD |
| Optimum Multiple Tuned Mass Dampers based on ADMF and the combinations available of the system parameters under earthquake |
| 修订日期：2000-11-28 |
| DOI：10.7511/jslx20023063 |
| 中文关键词: 多重调谐质量阻尼器(MTMD),加速度动力放大系数(ADMF),系统参数组合,最优参数 |
| 英文关键词:Multiple Tuned Mass Dampers (MTMD),Acceleration Dynamic Magnification Factor (ADMF),system parametric combination,optimum parameters |
| 基金项目:中国博士后科学基金资助课题 |
| 李春祥 熊学玉 |
上海交通大学建筑工程与力学学院 上海200030
(李春祥)
，同济大学预应力研究所 上海200092(熊学玉)
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| 中文摘要: |
| 多重调谐质量阻尼器 ( MTMD)是由许多频率成线性分布的调谐质量阻尼器组成。可能的系统参数组合形成 5种 MTMD,即 MTMD-1～MTMD-5。基于在基底加速度作用下具有一般 MTMD时结构的加速度传递函数 ,建立了 MTMD-1～ MTMD-5加速度动力放大系数 ( ADMF)的统一模式。利用 ADMF和数值寻优技术进行了详细的最优参数研究。最优参数包括 :最优频率间隔、最优阻尼比、最优调谐频率比。大量的数值比较表明 :在MTMD地震反应控制工程中 ,应优先选择 MTMD-1。 |
| 英文摘要: |
| Multiple Tuned Mass Dampers (MTMD) consists of many tuned mass dampers with an uniform distribution of natural frequencies. Five types of MTMD (i.e. MTMD1~MTMD5) are formed in light of the combinations available of the system parameters. Based on the acceleration transfer function of the structure with general MTMD under the ground acceleration, the unified expression for the Acceleration Dynamic Magnification Factor (ADMF) is derived for MTMD1~MTMD5. Utilizing a numerical searching technique, a study is performed to investigate the optimum parameters, which include the optimum frequency spacing, optimum damping ratio, optimum tuned frequency ratio. It is from the comparison demonstrated that it is preferable to select the MTMD1 when an MTMD is considered in the mitigation of the acceleration response of structures under earthquake. |
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