【摘要】 为研究调谐结构体系在基底水平地震作用下的减震效果,采用有代表性的两质点模型,从简谐激励出发得出了稳态位移响应表达式和影响参数。在此基础上,计算了子结构周期影响,得出其优化配置公式;分析了子结构与基本结构质量比的影响及配置;分析了基本结构周期、结构阻尼对减震效果的影响。进一步评析了调谐体系在宽带地震反应控制中的参数配置。研究指出质量比是地震作用下高效减震控制的重要参数,并指出了基本结构周期配置的重要性。更多还原

【Abstract】 The passive control efficiency of tuned systems in reducing earthquake-excited vibration response is an important subject.In this paper,analytic expressions of stable displacement responses and influence parameters are concluded,in which a representative simplified model with 2 DOF excited by constant harmonic ground motion is considered.On the above foundation,the influence and optimal configuration of substructure period is studied.The influence and configuration of mass ratio are investigated.The influence of megastructure period or damping on response reduction is analyzed.Furthermore,parameter configuration is commented on in control of wide-banded seismic response.Investigation shows that mass ratio is one of the main parameters influencing efficiency of earthquake-excited response reduction.The importance of period configuration of megastructure is pointed out.更多还原