The seismic resistance of xiaowan arch dam , where the contraction joints are considered based on substructure theory , is analyzed 摘要应用动力非线性子结构理论，对设置伸缩横缝的小湾高拱坝实际工程结构抗震分析中的坝体横缝加抗震钢筋问题进行了研究。
The study on seismic inertia and seismic soil pressure is a significant task to be deeply treated with and improved in the s tatic analysis of retaining structures 地震惯性力和地震土压力的确定方法，是目前挡土结构的抗震分析中有待深入研究改进的课题。
In this paper seismic analysis method of large complex structures such as bridges , tall buildings , subjected to stationary random ground excitations is investigated for which the non - linear elasto - plastic characters of some components is taken into account 本文对于在平稳随机地震激励下部分构件进入非线性弹塑性状态工作的大型复杂结构(如桥梁、高层建筑等)进行抗震分析。
The feasible study of xiaowan double curved arch - dam aseismatic analysis resulted , there are internal partly high stress in the dam at basis situation , in earthquake response and in the construction . the structure shoud be modified to meet the need of low stress 可研阶段的抗震分析计算结果表明，在基本工况和地震特殊工况及施工期，坝体局部存在较高的应力与不利分布，有必要进一步改善体型和结构布置以降低坝体应力水平。
Several advices of the aseismic design of buried structures are given in conclusion . the method to realize the analysis of soil - buried structure dynamic interaction is also valuable even to the analysis of building structures , bridges and dynamic machine foundations , etc 文中所论述的利用通用有限元分析软件ansys实现土-地下结构体系动力计算的方法，对地面建筑结构、桥梁结构的抗震分析、机械动力基础分析等也具有参考价值。
At first , based on dastous " tests , the horizontal forces applied at the cable ends are calculated when they are fixed . and then , the effect of cables with two selected spans acting on two types of beam with different sections and different natural frequency is analyzed 设备在正常的运行状态时都有导线相连，而观行的抗震分析仅针对设备单体，即使考虑导线的作用也仅仅是在设备与导线连接处施加静力荷载，这显然是不准确的。
Lots of investigations on bridge vibration resistance show that the analysis of cable - stayed bridge acts importantly on it ' s ability . as longer span of cable - stayed bridge , nonlinear earthquake analysis is another importanter problem for vibration resistance design 为抗震进行的大量研究表明，斜拉桥的线性抗震分析对提高斜拉桥的抗震能力起到了重要作用，随着斜拉桥跨度的加大，其几何非线性地震响应也是斜拉梁抗震设计中必须考虑的一个重要课题。
In this paper taking nanjing changjiang immersed tunnel as an example , the author made a research of aseismatic analyses of immersed tunnels by introducing fem , and also , made a further discussion of factors such as depth , geologic conditions , water and boundary conditions 本文利用南京长江沉管隧道的基本资料，探讨了如何利用动力有限元法对沉管隧道进行抗震分析，并利用这一方法分析了埋深、地质条件、水、边界条件等因素对沉管隧道地震反应的影响。
Significance of some measures to improve the application of computer simulation technology in structural seismic analysis , including establishing or upgrading the hysteresis model and multiparameter failure criteria of structural members , studying the damping mechanism of structures during decomposing , discussing the application of database technology in simulation system , developing analysis models for innovating structures and algorithms for analysis of earthquake responses of structures with initial damage , and introducing parallel technology is pointed out 指出建立或完善构件层次的滞回本构模型和多参数破坏准则，研究结构解体前后的阻尼机制，探讨数据库技术在仿真系统中的应用，发展新型结构体系的分析模型以及具有初始损伤结构的地震反应分析方法，引入并行计算技术等对推动计算机仿真技术在结构抗震分析中的应用具有重要的意义。
Not only the analysis and design method based on energy concept can better reflect the whole history and the elastic - plastic performance of the structure under the ground motion , but energy response and energy conversion have definite concept and simple form . it considers the effects of many design factors and has obvious advantage 采用基于能量概念的抗震分析和设计方法能较好地反映结构在强震作用下的全过程及其自身的弹塑性性能，而且能量反应及其转化概念明确、形式简单，包括了多种设计因素的影响，具有明显的优越性。
