抗震的

Considering the uncertainties of peak acceleration and frequency characteristics by using a bounded convex set model,the bounds of shear forces are derived from the Chinese seismic code,and then a new lateral bound load method for pushover analysis is proposed.

动力弹塑性时程分析法是一种较理想的结构抗震性能评估方法，但由于地震动的选取对其结果影响较为显著，而且目前尚无关于地震动选取的统一标准，从而严重地阻碍了动力弹塑性时程分析法的应用。

Seismic analysis is one of most important parts of fast breeder reactor core design. It is necessary for structural integrity assessment and analysis of variation of reactivity under the earthquake. Moreover some important data for qualification of the scram capability of the control rods during the earthquake could be provided.

快堆堆芯抗震分析是堆芯设计的重要组成部分，它将为堆芯在地震作用下的结构完整性评价和堆芯反应性变化分析提供必要的数据，同时为控制棒的可插入性评价提供参考。

In order to quantitatively analyze the aseismatic performance of this kind of beam-column assemblies through whole loading history, the non-linear FE analyses of the cross beam-column specimens were carried out by ANSYS. Compared to the experimental results, the finite element analyses cast a further light upon the characteristics of this beam-column assembly while being subject to cyclic reverse loading.

为了能对这种细晶钢筋增强混凝土结构的抗震性能有较为准确的定量分析，采用ANSYS有限元软件对十字形梁柱组合件进行了受力全过程的非线性有限元分析，并将分析结果与试验结果进行对比，从而进一步了解细晶高强钢筋混凝土梁柱组合件在反复荷载下的受力性能特点。

With the results which include performance point , shear force-displacement , distribution of the plastic hinges and so on, and has carried on the comparison with the elastic response spectrum method and the time-history method . An appraisal has been made after considering the structure earthquake resistance performance.

分析结果包括结构在小震和强震下的性能点和顶点位移，底部剪力-顶部位移，结构破坏时塑性铰的分布等，并与弹性反应谱法和动力时程分析的结果进行了比较，利用分析结果对结构的抗震性能做出了评估。

So far, the small high-rise residential rectangles column frame structure, special-shaped column frame structure short-leg shear wall system of seismic analysis and economic indicators relatively few reports, impact of the composite indicator .The residential structure is not conducive to residential owners and designers to grasp the scope of the application structure.

目前有关小高层住宅矩形柱框架结构体系、异形柱框架结构体系和短肢剪力墙结构体系的抗震指标和经济分析的比较报告很少，影响了人们对住宅结构体系综合指标的认识，不利于业主和设计人员对住宅结构体系应用范围的把握。

The remarkable discreteness of seismic response of structures under strong earthquakes significantly restricts the implementation of performance based seismic design.

结构的弹塑性地震响应通常具有很大的离散性，使结构在大震下的性态难以把握，给基于性能抗震设计方法的实现带来困难。

There is a trend to develop a simplified method for estimating the deformation of structure.

基于性能的抗震设计思想已得到国际上的普遍认可，其发展的一种趋势是建立简单的非线性方法确定结构非线性行为。

The results obtained from finite analyses indicate, under assured weld quality, the effect of ratio of axial compression stress to strength is relative better to moment-resistant bearing capacity of column joint, the ratio of axial compression stress to strength is bigger, the moment-resistant bearing capacity of column joint is bigger, earthquake resistant capacity is better

结果分析表明：在保证焊接质量的前提下，轴压比对节点柱的抗弯承载力影响较大，轴压比越大，抗弯承载力越大，节点的抗震性能越好。

The research indicates that it is necessary to consider the multi-dimensional seismic excitations in the anti-seismic analysis of large span cable-stayed bridges.

由于地震作用的空间效应，在进行大跨斜拉桥的抗震设计时，必须充分考虑多维地震的联合作用。

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Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。