基于地震模型土-不规则建筑-AMTMD相互作用系统的最优性能

李春祥;钟秋云;王 超

振动与冲击 ›› 2010, Vol. 29 ›› Issue (4) : 69-72,7.

PDF(3395 KB)
PDF(3395 KB)
振动与冲击 ›› 2010, Vol. 29 ›› Issue (4) : 69-72,7.
论文

基于地震模型土-不规则建筑-AMTMD相互作用系统的最优性能

  • 李春祥1; 钟秋云1; 王 超2

作者信息 +

Optimum properties of soil-asymmetric building-active multiple tuned mass damper interaction system based on ground motion model

  • Li Chunxiang 1 ;Zhong Qiuyun 2; Wang Chao 2
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摘要



基于地震模型下建立的土-不规则建筑-主动多重调谐质量阻尼器(AMTMD)相互作用系统的动力方程, 定义AMTMD的最优参数准则为:设置AMTMD结构的最大平动和扭转角位移动力放大系数的最小值的最小化。定义AMTMD的有效性准则为:设置AMTMD结构的最大位移动力放大系数的最小值的最小化与未设置AMTMD结构的最大位移动力放大系数的比值。基于定义的二个准则,研究不规则建筑标准化偏心系数(NER)、扭转对侧向频率比(TTFR)、土对结构的刚度比(SRSS) 和地震卓越频率系数(EDFR)对AMTMD最优频率间隔和有效性的影响, 为软土地基不规则建筑的地震振动控制设计与实现提供参考。

Abstract

Based on the developed dynamic equations of the soil-asymmetric structure-active multiple tuned mass dampers (AMTMD) interaction system considering the ground motion model, the optimum parameter criterion of the AMTMD is defined as minimizing the minimum values of the maximum translational and torsional displacement dynamic magnification factors (DMF) of the asymmetric structure with the AMTMD. The effectiveness criterion of the AMTMD is selected as the ratio of the minimization of the minimum values of the maximum displacement DMF of the asymmetric structure with the AMTMD to the maximum displacement DMF of the asymmetric structure without the AMTMD. Employing the above-defined criteria, the parametric studies for the influences of the normalized eccentricity ratio (NER), torsional to translational frequency ratio (TTFR), stiffness ratio of soil relative to structure (SRSS), and earthquake dominant frequency ratio (EDFR) of the soil-asymmetric structure interaction system are then carried out on the optimum frequency spacing and effectiveness of the AMTMD. Through the extensive numerical analysis, the suggestions obtained herein will be useful for the design and implementation in the earthquake reduction of asymmetric structures built on soft soil foundation.

关键词

主动多重调谐质量阻尼器 / 振动控制 / 土与结构相互作用 / 不规则建筑 / 地震卓越频率系数 / 最优性能

Key words

Active multiple tuned mass dampers (AMTMD) / Vibration control / Soil-structure interaction (SSI) / Asymmetric structures / Earthquake dominant frequency ratio (EDFR) / Optimum properties

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李春祥;钟秋云;王 超. 基于地震模型土-不规则建筑-AMTMD相互作用系统的最优性能[J]. 振动与冲击, 2010, 29(4): 69-72,7
Li Chunxiang ;Zhong Qiuyun;Wang Chao . Optimum properties of soil-asymmetric building-active multiple tuned mass damper interaction system based on ground motion model[J]. Journal of Vibration and Shock, 2010, 29(4): 69-72,7

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