第三，将爆破地震动加速度时程作为随机过程，对建筑结构物进行了随机振动反应理论分析；
Thirdly, assuming blasting seismic acceleration history is stochastic process, stochastic vibration response of structure is analyzed theoretically.
数值计算和实验测量的结果表明：对具有破坏性的地震，安装该隔震器后的低层建筑物可削减地震动加速度达80 %以上。
The numerical and experimental results show that if subjected to destructive earthquake, the acceleration of low structures installed the new isolators can be decreased by more than 80 percent.
国外水利水电工程设计中地震动参数(地震加速度)同样是很重要的资料，其取值的方法和原则与中国内地有很大的不同。
The seismic dynamic parameter (seismic acceleration) is similarly an important one in design of the foreign hydro projects but the method and principle of selecting its value are quite different.
从多维地震动输入下的结构三维振动方程出发，给出了结构多维随机振动的振型位移法和振型加速度法。
From the equation of three-dimensional vibration of structures, the methods of multi-dimensional random mode displacement and mode acceleration have been put forward.
文章最后给出了美国西部考虑震源破裂方向的地震动峰值加速度和均方根加速度的衰减关系。
Finally, the formulas of PGA and RMS accelerations attenuation dependent on the rupture direction of the seismic source are presented for the Western United States.
作为地震动强度指标，峰值加速度一直是研究最多的物理量。
As the intensity index of ground motion, PGA (peak ground acceleration) is often employed and analyzed.
研究结果表明：在简谐地面加速度作用下，高频地震动也可以引起长周期结构产生很大的位移反应，且最大位移反应出现在结构的瞬态自由振动阶段。
It is concluded that the transient response to a high frequency harmonic ground motion can increase greatly the displacement response of structures, particularly for the long period structures.
算例表明，地层对地震运动加速度有一定的放大作用，在地下结构抗震计算中应以实际基岩地震运动加速度作为地震动输入。
The example shows that the ground has some amplifying action to seismic acceleration and the real seismic acceleration of the sole rock …
在对该工程场地进行地震动小区划的基础上，分析了不同区的地表加速度反应谱特性。
Microzonation of ground motion parameters was done to investigate the different zone's seismic response spectrum.
研究结果表明利用地震动峰值加速度对地震诱发崩滑进行研究具有一定理论和实际意义。
The results demonstrate that it is useful in both theory and practice to study earthquake-induced landslides with PGA.
研究结果表明利用地震动峰值加速度对地震诱发崩滑进行研究具有一定理论和实际意义。
The results demonstrate that it is useful in both theory and practice to study earthquake-induced landslides with PGA.
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