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土-不规则建筑-ATMD相互作用系统动力特性的研究 被引量:4

CHARACTERISTICS OF A SOIL-ASYMMETRIC BUILDING-ACTIVE TUNED MASS DAMPER INTERACTION SYSTEM
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摘要 使用傅里叶变换,建立了土-不规则建筑-ATMD相互作用系统的动力方程。定义ATMD的参数准则为:设置ATMD结构的最大平移和扭转角位移动力放大系数的最小值的最小化。ATMD有效性准则定义为:设置ATMD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ATMD结构的最大位移动力放大系数之比。基于定义的准则,研究了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)和高基比(HBR)对AT-MD最优参数和有效性的影响。通过数值分析,综合出了一些有益的建议,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。 The dynamic equations of a soil-asymmetric structure-active tuned mass damper (ATMD) interaction system are developed by using Fourier Transformation. The parameter criteria of the ATMD are defined as minimizing the minimum values of the maximum displacement dynamic magnification factors (DMF) of the asymmetric structure with the ATMD. The effectiveness criteria of the ATMD are selected as the ratios of the minimization of the minimum values of the maximum displacement DMF of the asymmetric structure with the ATMD to the maximum displacement DMF of the asymmetric structure without the ATMD. Employing the criteria defined above, the parametric studies on the influences of the normalized eccentricity ratio (NER), torsional to translational frequency ratio (TTFR), stiffness ratio of soil relative to structure (SRSS), and height-to-base ratio (HBR) of the soil-asymmetric structure interaction system on the optimum parameters and effectiveness of the ATMD are then carried out. Through numerical analysis, the suggestions obtained herein are useful for the design and implementation in earthquake reduction of asymmetric structures built on soft soil foundation.
出处 《振动与冲击》 EI CSCD 北大核心 2008年第9期26-31,共6页 Journal of Vibration and Shock
基金 上海市博士点基金资助项目(A.16-0118-06-001)
关键词 ATMD 振动控制 土与结构相互作用 扭转耦合 最优参数 不规则建筑 active tuned mass damper (ATMD) vibration control soil-structure interaction (SSI) torsional coupling optimum parameters asymmetric structures
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参考文献4

  • 1Nishitani A, Inoue Y. Overview of the application of active/semiaetive control to building structures in Japan[J]. Earthquake Engineering and Structure Dynamics, 2001, 30: 349-362.
  • 2李春祥,韩兵康,张丽卿.地震作用下偏心结构最优ATMD控制的冲程评价[J].振动与冲击,2007,26(6):41-46. 被引量:7
  • 3Tsicnias T G, Hutchinson G L. Soil-structure interaction effects on the steady-state response of torsionally coupled buildings[ J ]. Earthquake Engineering and Structural Dynamics, 1984,12 : 237-262.
  • 4Li Chunxiang, Qu Weilian. Optimum properties of multiple tuned mass dampers for reduetion of translational and torsional response of structures subject to ground acceleration[J].Engineering Structures 2006,28 (4) : 472-494.

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