The results under horizontal ground motion with three levels are listed , and the stability of this dam is evaluated simply 给出该土坝在三级地震动水平作用下的分析结果，并对该土坝的地震稳定性做了初步评价。
But in fact their design response spectrum could be very different so that the parameters of ground motion for building design could be improper 实际上，两者可以相差很多，由此确定的设计地震动参数势必不尽合理。
A practical model for earthquake movement input is proposed and the method for random seismic analysis of gravity dam is discussed 提出了二维随机地震动输入实用模型，详细论述了重力坝结构随机地震动力响应的分析方法。
Weaker the synchronicity of inputted accelerations is , for example , smaller the velocity of earthquake wave is , stronger the multi - point effect is 多点地震动的同步性越差，如地震波视波速越小，多点效应就越明显。
To compare with the results of the testing , acceleration time - histories outputted from table - board of vibration table 为了与试验结果进行比较，有限元计算时采用振动台台面输出加速度时程作为计算模型输人地震动加速度时程。
In this paper , shaking table tests of dynamic soil - structure interaction ( ssi ) system are designed and carried out 本文设汁实现了结构-地基动力相互作用体系的振动台试验，通过试验研究了动力相互：作用体系的地震动反应的主要规律。
Additionally , features of fourier amplitude spectrum and variation of duration of ground motions with depth in treasure island were discussed 最后，讨论了土层基岩场地上台阵地震动的傅立叶幅值谱和地震动持时沿深度变化的特点。
The variations of amplitude of earthquake acceleration , normalized response spectrum ( nrs ) and bi - normalized response spectrum ( bnrs ) with depth were evaluated 结果表明，地震动加速度幅值随深度的增加而减小，在浅层的变化速度较快。
The effect of site conditions on the seismic ground motion is a research subject which is complicated but having important theoretical and applied value 场地条件对地震动的影响是一复杂而又具有重要理论意义和工程应用价值的研究课题。
