Assuming that the earthquake ground motion is a zero mean valued non - stationary random excitation , the higher accuracy numerical algorithm of these complex oscillators were developed in virtue of the principle of pseudo - excitation method 通过假定地震地面运动为一零均值的非平稳随机激励，应用虚拟激励法原理，推导得到了广义复振子动力坐标计算的一般公式，进而得到了非比例阻尼线性体系非平稳随机地震响应计算的一般解答。
5 the effect of complex media protruding topography on seismic wave propagation the protruding topography has amplification effect on ground motion while the hillside has constraint effect . the amplification factor of the valley bewteen two moutains is related to the distance of the two moutains 5 、复杂介质凸起地形对地展波传播的影响山体对地面运动有放大作用，在山脚则有抑制作用，山包之间峡谷的土层反应放大倍数受山包之间距离的影响较大。
After analyzing the existing ambiguity resolution methods the dissertation investigates the baseline rotation method based on the antenna - swap idea , and develops the fixed axis rotation maximum - minimum method ? farmm and the equivalent rotation maximum - minimum method ? ermm applicable for static basement and moving vehicle respectively . the former lowers the demands on rotation device while the latter improves the flexibility of antennae installation . meanwhile the dissertation also brings forward an ambiguity function search method which needs only one single epoch data with the outer aided information , and investigates the accuracy requirements for the assistant pointing information 其次,通过与gps等多星系统定向关键技术的对比分析,指出双星定向模糊度确定的难度;在分析现有模糊度求解方法的基础之上,研究了基于交换天线思想的转动基线模糊度确定方法,并提出了适合于静基座的定轴转动极大/极小值farmm法,以及适合于地面运动载体的等效转动极大/极小值ermm法,前者降低了对转动机构的要求,后者则提高了天线安装的灵活性;同时,提出了一种借助外部辅助信息的模糊度函数搜索法实现单历元双星定向,并分析了对外部辅助单轴姿态信息的精度要求。
( 2 ) some studies are made for the subject of various effects on wave propagation and ground motion of multi - dry , multi - saturated , and alternate dry and saturated soil layers . a comprehensive computer program is compiled , accounting for soil dilatancy , linear and non - linear constitutive relation , rigidity degradation and suiting to any combinations of soil layers , dry and / or saturated with different thicknesses , properties , continuity conditions at interfaces , and inputs at base and top boundaries . from the numerical results obtained for a quite large number of typical cases , some knowledge of general trends of response for , especially , the cases of alternate dry and saturated soil layers are gained both quantitatively and qualitatively ( 2 )对不含水土层分层排列、饱水土层分层排列、不含水土层与饱水土层分层交错排列情况下对波传播和地面运动的影响做了一些研究，考虑到土壤的剪胀性、线性和非线性本构关系，刚度退化等因素，编制了可适用上述各种情况和任意多土层(包括含水或不含水、力学性质不同、厚度不同、边界连续条件不同等) ，在不同基底输入或上边界输入作用下的通用分析程序，通过对相当数量的典型情况进行的分析计算，得到了一些趋势性的认识，特别是对饱水与不含水土层分层交错情况，取得了一些新认识。
3 . according to the classifying of the earthquake records , the influencing degree of different ground motions to the eccentric buildings is researched . the response of the irregular rc frame under the strong ground motions is analyzed using the fiber models 3 、根据地震动类型的划分标准，考察了各种类型的地面运动对偏心结构非弹性反应的影响程度；采用纤维模型梁柱单元分别模拟了单层和多层不规则结构在不同类型地面运动作用下的强震反应过程，对结构的变形峰值与滞回耗能情况进行了考察。
Secondly , analysis of effect of improvement and different improvement schemes on characteristics of self - vibration , ground motion and ground seismic resistant of foundation is made . furthermore , characteristics of self - vibration and seismic reaction of different natural ground and improved ground with the same improvement schemes and characteristics of seismic reaction of the same natural and improved ground under different seismic wave are also analyzed 采用所建立的动力有限元模型，分析比较了加固以及不同加固方案对地基自振特性、地面运动特性和地基自身抗震性能的影响；采用同一种加固方案但地基土层条件不同的地基加固前后自振特性及地震响应的差异以及同一复合地基在不同地震波作用下加固前后的地震响应的变化。
So the result is more accurate than old methods . the result of structural energy response based on wavelet provides a practicable method for structure design and design energy dissipation system in structure , this chapter ' s analysis and contrast tell us littlewood - paley wavelet is not suitable for analyzing energy of earthquake ground motion and structural energy response . on the purpose of calculating energy , meyer wavelet must be modified so that its frequency integral is a constant , the result of energy by modified meyer wavelet and harmonic wavelet is practicable , only the later is bigger but in the same energy level 通过三种小波基( littlewood ? paley小波、 meyer小波、谐波小波)下的地震地面运动能量分析以及结构地震能量反应分析说明：直接通过加速度记录可以求得地震动能量，由于小波系数中同时含有时域和频域的能量，由此得出的能量比以往的方法更准确；在此基础上求得了结构的能量反应时程，为结构设计及结构中设计耗能体系提供了具体的方法；通过这一章对比分析得出， littlewood ? paley小波不适合于作地震动能量分析和结构能量反应分析。
Abstract : in this paper , the authors give a description of the strong motion and damage caused by the earthquake of ms 7 . 4 occurring in izmit , turkey on august 17 , 1999 , including the strong ground motion of the izmit earthquake of ms 7 . 4 , the earthquake intensity distribution , the earthquake damage and preliminary analysis on the cause of earthquake damage 文摘:介绍了1999年8月17日土耳其伊兹米特7 . 4级地震的强地震动和地震灾害，包括：伊兹米特7 . 4级地震的强地面运动、地震烈度分布、地震震害以及地震破坏原因浅析。
The numerical results , such as the pga , pgv , peak ground displacement , and the three - component time - histories developed for beijing area , have a potential application in earthquake engineering field and building code design , especially for the evaluation of critical constructions , government decision making and the seismic hazard assessment by financial / insurance companies 利用数值模拟方法所得的较为真实的强地面运动参数，即加速度、速度、位移和时程特征，可为北京地区工程建设的抗震设计、救援设施的选址、以及金融及保险部门的风险性评估提供一定的依据。
Numerical examples , two cavities case , are provided to show the effect of wave number , distance between the centers of the cavities and the ground surface and distance between the centers of the cavities upon the dynamic stress concentration around the cavities edge and ground motion impacted by incident steady sh - wave 通过具体算例，讨论了与界面等距离的相邻二个圆孔对sh波的散射，给出了数值结果，并讨论了波数与圆孔至边界距离和二圆孔中心距离变化对动应力集中和地面运动的影响。
