加速度反应

• T he t esting d ata show that under the designed vibration waves , the lead alloy dampers are well functioning , not only reducing the strain at the ankle of bushing , but limiting significantly the relative displacement and absolute acceleration at the top of bushing
  试验结果表明：在试验设计确定的地震动输入下，铅合金减震器的减震效果良好，不仅降低了断路器地震破坏指标? ?瓷柱根部应变，而且没有显著增加断路器顶部的位移和加速度反应。
• The largest story shear , the largest story displacement , the lateral structure deformation and story of acceleration of the two model ' s were presented under the action of weak earthquake and strong earthquake . it proceeded the statistical analysis of the largest story shears of different earthquake waves
  本文给出高层隔震建筑在多遇地震和罕遇地震作用下最大层间剪力、层间位移、侧移变形以及加速度反应，并且对最大层间剪力进行了统计分析。
• On the basis of theoretic analysis and numeric calculation , the author verifies that only is the ratio of the fundamental period of the structure to the disturbance period beyond 1 . 4 , it ' s possible to achieve reductions in both the relative displacement and the absolute acceleration responses
  作者在此基础上，从理论分析和数值计算两方面证明了粘性变阻尼控制仅在结构周期与激励主周期的比值大于1 4时才有可能同时减小结构的位移反应峰值和加速度反应峰值。
• Such a semiacitve control system is not only with a broad frequency range for vibration suppression but also apt to implement . numerical results show that using the discrete control can generally decrease the displacement response but increase the acceleration response , whereas using the co
  同时通过数值计算发现，变刚度控制如果采用离散控制的方法，尽管可以有效抑制结构的位移反应，但是大多数情况下对于加速度反应则是不利的；相反，连续控制则显得比较灵活，可以有效克服这种缺陷。
• The numerical results show that the horizontal variation of response acceleration of gravity retaining wall is quite small since its lateral rigidity is large enough , the response at a given height level can be considered as the same , the maximum accelerations at different heights on the central vertical line can describe the distribution of earthquake load along the wall height in static analysis very well
  数值结果显示，重力式挡土结构刚度很大，地震加速度反应在水平方向差异很小，可看作是同步的，可取中心线上各点最大加速度来描述静力法中地震作用沿高度的变化规律。在沿墙高度方向，加速度分布不是呈直线变化，比较复杂，总的变化趋势大体一致。
• Base isolation technology is one of the most efficient method for seisin resistant . by putting the isolation system between the top - structure and the base , it can enhance the damp of the building , prolong the periods , decrease acceleration response when the building was under earthquake
  基础隔震是新型抗震主要手段之一，它是在建筑物与其基础之间，垫上隔震系统，来延长结构周期，给予结构适当的阻尼，使结构的加速度反应大大减弱，让结构的大位移主要由结构物底部与基础之间的隔震系统提供。
• The contrast is higher , the amount of reflect becomes more ; and the sedimet is deeper , the shaking duration becomes longer . so . as the contrast higher and the depth deeper , more waves converge on the basin , more waves interfere with each other , the duration is longer , the amplitude of displacement or accelerate is larger , and the fourier responce spectra contain more components
  所以，基岩与沉积层的剪切波速比越大，沉积层的深度越大，波就越容易聚集在盆地中，中国地震局工程力学研究所硕士论文波与波之间的干涉机会就越多，盆地的振动时间就越长，沉积层的位移和加速度反应就越大，波的频谱成分就越丰富。
• This paper relates to some problems about the determination of design ground motion parameters , which include the choice of the attenuation relationship of rock horizontal acceleration response spectrum , the impact of focal depth to rock peak horizontal acceleration and rock response spectrum curves , the choice of intensity envelops function and random input phase , the choice of soil nonlinearity and shear wave velocity , scale of design ground motion response spectrum etc . in the researches of relative aspect , based on a typical section plane of the engineering site , influence of the change of some parameters on design ground motion parameters and the existing errors and corresponding rules are studied by using the method of one dimension model of equivalent linearization
  摘要研究了确定设计地震动参数中涉及的若干问题，其中包括基岩水平加速度反应谱衰减关系的选择、震源深度对基岩水平加速度峰值及基岩反应谱曲线的影响、强度包络线函数及输入随机相位的选择、土体非线性特性参数和土层剪切波速值的选择、设计地震动反应谱的标定等问题。
• Via researches symans and sadek pointed out that for flexible structures ( structures with periods beyond 1 . 5s ) such a semiactive control system can be effective in reducing both the relative displacement and the absolute acceleration , whereas for rigid structures ( structures with periods below 1 . 5s ) it is doubtful
  Symans和sadek等人通过研究指出，对于柔性结构(周期在1 . 5s以上)变阻尼控制可以同时减小结构的位移反应和加速度反应；相反对于刚性结构（周期在1 ss以下）其效果如何则是值得怀疑的。
• B ) relative velocity response spectrum ( sv ) and relative displacement response spectrum ( sd ) : the variation of velocity spectrum with depth is similar to that of acceleration spectrum . but the variation of displacement spectrum with depth is a little different to that of acceleration and velocity spectrum . that is , in strong earthquake , the variation of displacement spectrum and normalized spectrum in different depth is very small
  ( 2 )速度反应谱( s 、 )和位移反应谱( sd )沿深度变化的规律速度反应谱沿深度变化的特点与加速度反应谱基本相似;位移反应谱沿深度变化的特点与加速度和速度反应谱有较小差别，即强震时位移反应谱和标准位移反应谱沿深度的变化很小。