1 . the research actuality of site classification methods at home and abroad was outlined , the related regulations on site classification in all kinds of seismic design codes were briefly summarized 简要总结了场地分类的研究现状和国内外抗震设计规范中关于场地分类的方法，对我国历代建筑抗震设计规范中关于场地分类的有关内容进行详细总结，并对其演变加以分析和评述。
To the structural characteristics , earthquake characteristics of the masonry building with frame - shear wall at first floor , combined with " the antidetonation design specification of the building " , this paper has proposed some main design points from four respects 摘要针对底部框架抗震墙砖房的结构特点、震害特点，结合《建筑抗震设计规范》 ，提出了四个方面的设计要点。
In fact , there should be different design spectra corresponding with the structures of different damping - ratios , the new code for seismic design for buildings ( gb50011 - 2001 ) has provided corresponding spectra for structures with different damping - ratios 事实上，具有不同阻尼比的结构就应有不同设计反应谱与之对应， 《建筑抗震设计规范》 （ gb50011 - 2001 ） [ 6 ]已规定了不同阻尼比的标准设计反应谱。
It is shown that the lateral stiffness ratio of the third story to the second story suggested by the latest 《 code for seismic desing of building 》 ( gb50011 ) is relatively low and the reasonable value is proposed , which can be used for referrence to engineering designers 根据计算结果的分析，认为新颁布的《建筑抗震设计规范》 ( gb50011 )对于砌体过渡层与第二层框剪层的侧向刚度比限值偏小，并提出了合宜的刚度比取值范围，可供设计人员在抗震设计时参考和借鉴。
A primary scheme of site classification was presented , in this scheme a new site classification method that can consider the profiles containing bottom , mid or top soft layer was put forward on the basis of the site classification in the current code for seismic design of buildings 提出了基于土层结构的场地分类的初步方案。在现行建筑抗震设计规范四类场地划分的基础上，进一步根据不同土层结构对每类场地再细划分为三个亚类，并给出其相应的设计反应谱。
But the method of site classification still has some problems . for example , two sites which belong to the same site sort and only the position of soil layer is different have the same design response spectra according to the code for seismic design of buildings ( gb 50011 - 2001 ) 目前场地分类的方法还存在一些问题，例如，相同类别的两个场地，仅是软弱夹层所在位置不同，其它参数完全相同，按现行建筑抗震设计规范( gb50011 ? 2001 )就会给出相同的设计反应谱。
The essay combines " code for seismic design of buildings " ( gb50011 - 2001 ) , analyzing and discussing bent structure of one - story industry buildings tinder the interaction of the seismic , ground - structure , and works out calculation model for bent structure ' s dynamic period about the depth of burying foundation and toft transmutation ; the model is employed expediently , adapts to actual engineer construction design at present 本文结合我国《建筑抗震设计规范》 ( gb50011 - 2001 ) ，对单层工业厂房排架结构在地震作用下土?结构共同作用问题进行了分析讨论，给出了考虑基础埋深与地基变形影响时排架结构自振周期的计算模型；这?模型应用方便，适合目前实际工程结构设计使用。
Seismic design method of coupling beams with small aspect ratio was one of important problems catching notice at the newly revising structure design codes just completed , and it was discussed seriously at the harmonizing meeting of china code for seismic design of structures , china code for design of concrete structure and the code for design of reinforced concrete high - rise structure . however , because of the insufficiency of experimental research , unanimous opinions were not obtained 在刚完成的我国新一轮结构设计规范修订中，小跨高比连梁的抗震设计方法是被关注的重点问题之一，并在《建筑抗震设计规范》 、 《混凝土结构设计规范》和《高层建筑混凝土结构技术规程》的协调会上作过认真讨论，但因试验研究工作尚不够充分，未能取得一致意见。
The earthquake responses of the asymmetric - plan structure are researched and the main factors that influencing the structure ' s response are established . the influences of the earthquake type and the earthquake input in two directions are also researched . the effectiveness of regulation for the irregular rc frames in the code for the seismic design ( gb50011 - 2001 ) is discussed using the flexibility - based fiber - models beam - column elements in the 3d nonlinear analysis program 本文结合国家自然科学基金资助项目“结构非线性地震扭转作用和扭转效应的研究” (项目批准号： 59978055 ) ，对平面不规则结构的地震反应规律进行了深入研究，明确了影响平面不规则结构地震反应的主要结构参数，研究了不同地震动类型和双向水平地震输入对结构扭作用和扭转效应的影响；采用基于有限元柔度法的纤维模型梁柱单元，建立钢筋混凝土框架结构三维非弹性地震反应动力分析程序，对依据我国建筑抗震设计规范( gb50011 - 2001 )设计的不规则结构进行地震反应模拟分析，讨论了现行设计方法的有效性。
This paper firstly compares the provisions about torsion effect and anti - torsion design in several codes ( the old and new chinese code for seismic , and some other countries " codes ) . then , according to the code for seismic design of buildings ( gb50011 - 2001 ) and the code for concrete structure design ( gb50010 - 2002 ) , the paper designs two multi - storied irregular concrete spatial frames , which respectively situated at the area of fortification intensity 8 and 9 . subsequently , using the program based on the column - beam element of fiber model , input several ground motion records , which are selected according to the demand of code , to carry the structures " three - dimensional nonlinear analysis in two perpendicular directions at the same time 本文对比了我国新、旧建筑抗震设计规范（ gb50011 - 2001 、 gbj11 89 ）以及国外设计规范（或指南）中关于结构扭转效应与抗扭设计的相关规定；按照新建筑抗震设计规范和混凝土结构设计规范（ gb50010 2002 ） ，设计了设防烈度分别为8度和9度的两个多层钢筋混凝土不规则空间框架结构，利用纤维模型梁柱单元的三维非线性动力分析程序，根据新抗震设计规范的要求，在设防地震作用和罕遇地震作用水准下选择适当的地震波作为输入，对结构进行了双向地震作用下的三维非线性动力反应分析。
