The variation of ground motion with depth is an important consideration in characterizing ground motion for embedded structures . in this paper , a study on the earthquake ground and underground motion by analyzing the surface and downhole data from hosokura mine array of japan and csmip geotechnical arrays of u . s . a . is conducted 本文的研究对象及地震动数据包括：美国加州强震观测计划( csmip )的6个土工台阵( geotechnicalarray )的28个地震，包括ns 、 ew和un三分量共429条地震加速度时程。
By virtue of the design features of the mania dam , this paper studies the dynamic characteristics of the dam materials . by comparison with other similar projects , it presents a curve for dynamic characteristics of clay core materials and rockfill materials , makes analysis on the dam ' s plane dynamic response by finite element method , calculates the dam ' s seismic acceleration , the dynamic shear stress of the rockfill , and the dynamic stress of the cutoff wall in the overburden layer 本文针对满拉土心墙堆石坝的设计特点，进行了筑坝材料动力特性试验研究，通过与相关工程对比给出了心墙料和堆石料的动力特性曲线，采用有限元方法进行了大坝平面动力反应分析，计算了大坝的地震加速度、堆石体动剪应力及覆盖层防渗墙的动应力。
Some stiffness matrices of special elements such as rubber bearings and components with field are derived from primary - secondary and inverse transform in structural matrix analysis . then , seismic response analytical models and non - isolated continuous rigid frame bridges are set up , while considering the interaction of soil - pile - structure and traveling wave effect simultaneously . finally , the seismic time history response of the two models is calculated by means of the finite element method , and the results show that the isolated bridge posses powerful earthquake resistance 首先论述了公路大跨径桥梁的地震反应分析方法，其中包括桩-土-结构相互作用、行波效应等因素对结构物的影响；其次，利用结构矩阵分析中的主从变换和逆步变换，推演了几个特殊单元的刚度矩阵，包括橡胶隔震层单元和带刚域构件单元；最后，考虑桩-土-结构相互作用和行波效应的结合，分别建立隔震与非隔震连续刚构桥地震反应分析模型，通过有限元法对两种结构进行时程分析，结果表明：隔震层上部结构的地震加速度反应、位移反应均明显减小，这说明隔震的连续刚构桥具有很好的抗震能力。
First of all , it determines the scope in which earthquake might be genetated , the potential seismic sources areas and the upper limit of the earthquake magnitude through the analysis , research and evaluation of the area seismic geological condition of the workzone . secondly , according tothe research of the seismic activity , it also determines the seismic activity coefficients for per potential seismic sources areas , and the delay relation of seismic intensity and seismic accelaration , and then three different seismic intenstities and dynamic strength of bedroch under different probability are given . through the analysis and caculation of earthquake hazard with the analytic approach of probability 首先，对工作区的区域地震地质环境进行了分析、研究、评价，确定了莱芜市可能发生地震的范围、潜在震源及其震级上限等。其次，根据对地震活动性的认识，确定了各潜在震源区的地震活动性参数及莱芜市地震烈度和地震加速度衰减关系，在此基础上用概率分析法对莱芜市地震危险性进行了分析计算，得到了莱芜市在三种不同概率水平下的地震烈度和基岩地震动强度。
