地震

The paper includes:The author calculate the structures inner force and displacement of the free end , analyze the influence of the height and the value of pretress of cable by making use of ANSYS 9.0 soft, pose the concept of critical prestress,conclude the function relation between displacement of the free end, initial strain and the height of cable ,analyze the dynamic properity and point out that Newmark-β method should be adopted when we analyze the dynamic properity of the cable-stayed spatial structure with direct integral test to guarantee the contribution of high mode,finally conclude the functional relation among coefficient of earthquake inner force, initial strain and the height of cable, wish to get some helpful conclusion applied to cable-stayed spatial truss design.

本文系统介绍了斜拉空间桁架竖向地震反应的分析理论与方法、详细分析了斜拉空间桁架结构在静力和竖向地震作用下的受力性能，主要内容包括：利用通用有限元软件ANSYS9.0计算了斜拉空间桁架在静力和竖向地震作用下内力及自由端位移分布规律并得出地震内力系数与节间位置、预应力以及斜拉索高度之间的函数关系；详细分析了斜拉索中施加的预应力以及斜拉索高度的变化对于该种结构内力及自由端位移的影响并提出了斜拉空间桁架的临界预应变概念，进而得到了自由端位移与初始预应变以及斜拉索高度的函数关系，即：△=-(40h+2180)ε+9.8；分析了该种结构的动力性能，并指出：在时域内采用直接积分法计算该种结构的动力响应时，应该考虑采用不引起振幅率减小的Newmark-β法，以保证高阶模态响应的贡献仍然保留在响应中而不致于被忽略。

The cumulative frequency of earthquakes within the past 4 seismic cycles in Mainland China increased exponentially and the main active areas of strong shocks were different for different cycles, which is exactly simulated in the model developed in this thesis.

分析人工地震目录并将所得结果与中国大陆地区本世纪以来经历的四个地震活动轮回对比，发现在地震活跃期中，地震频次呈现指数型累积增长，各活跃期中主体活动地区具有迁移特征。

Vibroseis is a new type of seismic source which will not bring the danger and destructibility of dynamite and can bestir repetitious sweeping signal.

而高分辨率地震勘探是一个系统工程，从地震波的激发、检波器阵列的布置、数据采集、数据处理到数据解释都应该遵守高分辨率地震勘探的准则。震源是产生地震信号的源头，其信号质量直接影响地震勘查效果。

Coulomb failure stress changes produced by former earthquake on fault plane and slip direction of latter earthquake have been calculated. We found that the number of earthquake doublets with positive CFS change is more than that of negative CFS change.

计算了前面地震事件在后续地震断层面和滑动方向上产生的库仑破裂应力变化，发现正库仑破裂应力变化的"地震对"数多于负库仑破裂应力变化的"地震对"数。

The paper analyzes historical influence in studying of traditional earthquake forecast of earth tide, and compares geohysical charactistics of earthquake forecast with that of Geodyuamics by earth tide in vibrating frequency, measure of volume of vibrating source and transmit distance. It emphasizes that the setting up of fundamental conception is the most important in earthquake forecast by earth tide.

本文分析了现行固体潮地震研究中的历史影响，对比研究了固体潮地震预测研究和固体潮地球动力学研究二者在振动频率、振动源体积、传输距离与介质等方面的地球物理特点与本质区别，强调了固体潮地震预测研究中最根本的工作是建立地震预测的目标和基本概念。

Under the guidance of the principle and method of seismic sedimentology, we analyze the planar facies map with seismic information based on single-well facies, fetch the information of isochronal stratum unit with the technology of stratal slicing, and research on the planar facies distribution and the evolution history of different stratum unit using various seismic attributes.

以地震沉积学的原理及方法为指导，以单井相分析为基础，将地震高阶信息应用于沉积相平面分析；利用地层切片技术在地震数据体中提取等时地层单元信息，结合各种地震属性参数的分布研究不同地层单元的沉积相分布及其演化史。

Seismic disaster ; seismic risk ; seismic hazard ; seismic friability.

地震灾害；地震危险性；地震危害性；地震易损性

According to the characteristics of seismic reflection such as amplitude, continuity, interior structures and exterior shapes, seven seismic facies, including medium amplitude medium continuity and parallel or sub-parallel sheet facies, disorderly filling facies, disorderly progradation facies, hummocky facies, weak amplitude and medium continuity wedge facies, weak-variable amplitude and poor continuity wedge facies, and broom progradation facies, are recognized from the seismic reflection corresponding to Member 2 of Kongdian Formation which is prospective for oil and gas exploration.

利用地震反射波的振幅、连续性、内部结构和外部形态等地震反射特徵，在具有油气勘探前景的孔二段的地震反射中识别出了中振幅中连续亚平行席状相、杂乱充填相、杂乱－斜交前积相、丘状相、弱振幅中连续楔状相、弱变振幅低连续楔状相及帚状前积相等七种地震相。

C. framed structure with infill walls for resisting earthquake is studied.

为了研究这类建筑的地震反应和砖填充墙的抗震作用，作者利用这些地震记录分析这座建筑的地震反应，并进行了模拟地震试验。

Finally, seismic Rayleigh wave velocity inversion for P-SV wave S-statics isstudied, which is mainly including the flowing contents: the separation of Rayleighwave signals from seismic data, the pickup of Rayleigh dispersion curves, seismicRayleigh wave velocity inversion, and the principle and the processing flow ofresolving P-SV wave S-statics.

最后研究了地震瑞雷面波速度反演求取P-SV波横波静校正量，包括地震瑞雷波信号分离方法、地震瑞雷波频散曲线拾取方法、地震瑞雷波速度反演以及P-SV波横波静校正量求取方法和处理流程。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。