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免费版本2018-01-05
ETABS TO PERFORM-3D
Author: dinochen1983
Time: 2023-12-31
[小记]ETE2018是由陈学伟(DINO)与李明(LI MING)开发的集成程序,它可以完成结构概念设计
优化设计、模型转换、快速建模,快速验算与结构总信息统计的小程序,在设计的基础上开发,不是纯学术研究
满足工程人员对设计的极致要求。由于程序太巨大量,学习操作的教程会慢慢在DINOCHEN.COM上发布
有兴趣的工程师可以下载试用,我们定期会在微信公众号平台公布程序的最新进展
我们的微信公众号是 DINOSTRU , 或扫码关注, 微信的更新是永远最快的。
ETE2018
Author: dinochen1983
Time: 2023-12-27
ETABS to ABAQUS 内置于 ETE2018
ETABS to ABAQUS
Author: dinochen1983
Time: 2023-12-09
预览模式: 普通 | 列表

楼板振动时程分析方法论文被ISTP收录啦!太高兴了!
这是我的第一篇三大索引的论文(ISTP),论文题目为:《The Research of Time-History Response Analysis of Floor Vibration Based on Simulation of Group Walking》,论文集题目为:《1st International Conference on Modelling and Simulation》;
论文索引号:ISI:000259598800039
搜索ISTP的论文的方法是,从大学电子图书馆进入以下网址:
http://apps.isiknowledge.com/
点击输入上述论文题目便可以得到该论文的摘要!


OpenSEES是一个优秀的地震工程开源软件,但是很多使用者在前后处理方面总会遇到不便,我在做剪力墙低周往复试验与足尺钢框架结构的数值分析的时候也遇到这个问题。我是如何解决的呢?我是采用面向对象语言如Delphi,VC++,VB这一类软件去实现。通过本科时候的百步梯科研计划的训练,对计算机图形学也有所了解,采用面向对象语言编前后处理的好处是显示速度快,实时显示,方便调整。虽说前后处理不是计算分析的核心,但是前后处理是软件推广的主要因素呀。我总结一下我用Delphi做剪力墙试验的前后处理的过程:
OpenSEES is an excellent open source software of earthquake engineering, but many users of it have some inconvenience of the prep and post factors. I found the inconvenience when I analyzed the shear wall cylic test and full scale steel frame test. How can I solve the proble?? I choose the OPP language to do that, such as Delphi, VC++ and VB. After the trainning of the 100steps science project, I am so good at comptuer graphics. The avantages of  OPP program are fast display, real time, change easily. The prep and post system is not the core of analysis, however, it's the important factor of  software spread. Now, I has some conclusions of how to make the post programe when I analyze the shear wall.
(1)创建结构要素的数据结构与对象; Create data and objects of the structure elements;
(2)创建结构文本导入程序; Create input text file sub program;
(3)编制结构在OpenSEES里面输出的信息格式; Define the format of OpenSEES output file
(4)编写实时文本读取子程序; Create real time text file reader
(5)编写结构单元及应力云图绘制规则; Define the drawing rules of the structure elements nad stress strain color figures
(6)选取图形绘制系统,建议平面采用DirectX,空间采用OpenGL; Choose graphics system, 2D use DirectX, 3D use OpenGL
(7)调整颜色,粗细等要素,使程序美观; Fix the color, pen width, make the post system as beautiful as you can
(8)调入时间功能,实现动画显示。Set the clock component, change to be the real time animation.
编制后处理程序,可以方便检查你的模型是否正确,结果可视化后可检查分析结果,查看规律。还有一点,让你的论文绵上添花。以下是我的剪力墙的后处理界面,正式论文在十二月的《世界地震工程》发表。
When the post system is finished, it's very useful for checking, not only to check the building errors, but also to find the rules from the results, even more, make your paper much more professional. This is the Post window of my shear wall test simulation, the paper will be published in December. 

有一个多星期这么久没有写博客了,太久了,有点对不起关心该博客的朋友了。最近忙CSA的研究工作所以没多少时间上来。上次跟研一的同学分享课程学习经验的时候,回想起数值分析的课程,现在的数值分析课程好像已经没有布置编程题了,我觉得这样很不妥当,数值分析就是用来编程用的,同理,现在的土木系的研究生教育越来越不重视编程了。以前,电脑还没有普及,很多研究生要写一些结构分析的FORTRAN程序来做论文,现在的研究生很少自编程序来做论文,过分的依赖SAP2000,ANSYS,ABAUQS这些有限元软件了,这样有个不好的地方就是大家似乎重视电脑操作而忽略了有限元的很多原理,同样我国的有限元软件就不会太大的发展了。
数值分析的课程我觉得很重要,对有限元来说,线性方程组求解可用于求静力问题,特征值求解用于求振型,积分与插值用于等参元等等。各个有限元层次都需要数值分析的基础。
我与大家分享一下华南理工大学研一的实验题,并列出我采用Delphi编出来的一些小程序答案,欢迎大家下载!!

Download:研究生课程实验题文件
第三题:插值与拟合
1. (龙格现象的发生、防止和插值效果的比较)对区间[-5,5]作等距划分:  ,对下列函数y=x/(1+x^4)分别按给定方案进行插值,计算其在各划分小区间中点上的值,并给出插值函数的图形。
方案I:  分别取  作Lagrange插值;
方案II: 分别取  作分段线性插值。




第五题:数值积分
1.文学家要确定一颗小行星绕太阳运行的轨道,他在轨道平面内建立以太阳为原点的直角坐标系,在两坐标轴上取天文测量单位(一天文单位为地球到太阳的平均距离:9300万里)在五个不同的时间对小行星作了五次观察,测得轨道上五个点的坐标数据如下表所示: 
           P1      P2      P3       P4      P5
x坐标 5.764 6.286 6.759 7.168 7.408
y坐标 0.648 1.202 1.823 2.526 7.408
由开普勒第一定律知,小行星轨道为一椭圆,椭圆的一般方程可表示为:       
                    
现需要建立椭圆的方程以供研究。
(1)分别将五个点的数据代入砣圆一般方程中,写出五个待定系数满足的等式,整理后写出线性方程组AX = b。
(2)用MATLAB求低价方程组的指令A / b求出待定系数  。
(3)卫星轨道是一个椭圆,其周长的计算公式是
                                   
式中,a是椭圆的半长轴,  是地球中心与轨道中心(椭圆中心)的距离,  。其中h为近地点距离,H为远地点距离,R = 6371(km)为地球半径。
   有一颗人造卫星近地点距离h = 439 (km),远地点距离H = 2384(km)。试分别按下列方案计算卫星轨道的周长,误差限取为  。
(方案I ) 复化Simpson法;  (方案II ) Romberg算法。

我的解答:


08-11
07

后台程序控制OpenSEES操作

2008年11月7日,开始进行基于OpenSEES的CSA研究项目,也叫Hybrid Simulation,该项目由我与王响合作开始进行。我的第一步是研究基于OPP的Delphi去控制OpenSEES程序,实时的放送命令。很久没有搞控制了。查了一些书终于做出来了。这个项目我很感兴趣,同时谢谢日本的Motohide Tada教授在学习资料上面的帮助。
程序源代码如下
procedure TForm1.Button1Click(Sender: TObject);
var h:hwnd;
i:integer;
txt:string;
begin
h:=findwindow(nil,pchar('opensees.exe'));
setForeGroundWindow(h);
txt:=edit1.text;
SendMessage(h,wm_char,ord(char(txt[i])),0);
SendMessage(h,wm_char,ord(#13),0);
end;

转载于: http://www2.scut.edu.cn/jtxy/publish/news/xueyuanxinwen/1o5vvsq71f1a8.html

我校获金土木结构软件全国用户大会优秀论文一等奖

2008年11月06日 09:44:04 浏览次数:82
韩小雷教授作报告 参与研究的学生
   
   
    近日,金土木结构软件全国用户大会在北京召开,来自全国各省的建筑设计研究院参加了本次大会,大会特邀国内外著名专家对工程设计领域的热点问题进行了二十余场特邀学术报告。邀请的专家学者包括:国际结构分析软件奠基人、SAP系列程序的创始人、加州大学Berkeley分校Edward L. Wilson教授、CSI公司创始人Ashraf总裁、华南理工大学土木工程系韩小雷教授等。这次大会同时征集基于CSI公司软件产品的结构工程分析研究论文。
    土木与交通学院韩小雷教授和博士生陈学伟、硕士生林生逸、毛贵牛、吴培烽参与了某超高层建筑结构的超限设计,将基于性能的抗震设计思想与工程实践相结合,总结经验撰写了《基于纤维模型的超高层钢筋混凝土结构弹塑性时程分析及工程应用》。该论文获得用户大会优秀论文一等奖,并将被金土木公司推荐至《建筑结构》杂志发表。  (图文/土木与交通学院供稿 编辑/龚华萍)  

My technical paper name “Inelastic time-history analysis method of super high rise building reinforcement concrete structure based on fiber model” has got a winner of best research paper award in the CKS User Conference 2008. The website of South China University of Technology  also broadcast the news of that. The CKS User Conference is the commercial conference of CKS company which is famous by its engineering software such as Sap2000, Etabs and Perform-3D. The conference is took place in Beijing. Many architecture design research institutes had join the conference. Fortunately, the conference called for papers about the software, so we submit the paper about our recent research. The research is about the analysis method we used in the real super high rise structure about 60 storeys. We, three students and I under the direction of my professor did some research on the building structure with a complicate method. Finally, we finished it and made some summarize of the whole process and finished the paper. We were so surprise and very happy when we got the first award. The paper is nominated to publish in journal named building structure.

 

 

 


今天师弟给了我一道计算机图形学的题目,是他们计算机辅助设计课程的小作业,今天我用半个小时搞定了它。其实,这个题目有点意思,练习中可以体现出几个考点:自循环算法(简单的分形),可视化编程,AUTOCAD控制,编制dxf文档。我在这题目上加了一个动画控制,通过调整角度值可以看到分形图形的变化。
原题目是:用FORTRAN编写一个程序生成图示图形的DXF文件。要求在运行的过程中提示输入最大正方形的边长,正方形的个数,相邻两正方形的夹角。
最后,我采用的是Delphi来编写,通过时间控件可以实现动画显示,颜色淅变,甚至可控制AUTOCAD出图,但是在算例中我只是让程序输出DXF文件就行了,偷懒一下!!


Perform-3d学习资料下载
为方便大家学习PERFORM-3D的软件操作,我从安装文件中的帮助文档中摘下了PERFORM-3D学习资料供大家下载
PERFORM3DUserGuide and PERFORMComponentsAndElements are availabe for download!!


Download点击下载:
PERFORM3DGettingStarted.pdf
PERFORM3DUserGuide.pdf
PERFORMComponentsAndElements.pdf

《基于纤维模型的超高层钢筋混凝土结构弹塑性时程分析及工程应用》该论文获得金土木优秀论文一等奖,很多网友对该论文比较有兴趣,现已被金土木推至《建筑结构》发表,现阶段只能公开摘要。摘要内容如下:

基于纤维模型的超高层钢筋混凝土结构弹塑性时程分析及工程应用
韩小雷1,2) 陈学伟1) 林生逸1) 何伟球1) 郑宜1) 吴培烽1) 毛贵牛1)
(1. 华南理工大学高层建筑结构研究所 广州 510640;2.华南理工大学亚热带建筑科学国家重点实验室 广州 510640)

[摘要]  基于纤维模型理论利用PERFORM-3D软件实现了复杂超高层建筑结构的弹塑性时程分析并进行构件变形性能评估。针对PERFORM-3D建立高层结构模型的复杂性,开发了PERFORM-3D前处理程序ETP使之能够方便地准确地建立弹塑性模型。分析表明,基于纤维模型的整体结构弹塑性分析法是一种高效可行的方法,不但宏观上得到结构整体响应,而且微观上得到构件内力及变形和纤维的应力及应变。通过工程实例,得到整体结构响应、构件的变形及结构能量耗散情况,研究按我国现行规范进行设计的超高层混凝土结构在罕遇地震作用下的非线性变形及受力特点。

[关键词]  弹塑性时程分析 PERFORM-3D 超高层结构 基于性能 阻尼

Inelastic Time-History Analysis and Engineering Application of Super High-Rise RC Building Structure Based on Fiber Model /Han Xiaolei1,2, Chen Xuewei1, Lin Shengyi1, He weiqiu1, Jack Cheang1, Wu Peifeng1, Mao Guiniu1 (1 Tall Building Structure Research Institute, College of Architecture and Civil Engineering; 2 Key Laboratory of Subtropic Architecture Ministry of Education, South China University of Technology, Guangzhou 510640, China)

Abstract: Inelastic time history analysis and component deformation performance evaluation of complex super high-rise building structure can be realized by the program PERFORM-3D based on the theory of fiber model. In order to reduce the complexity of tall building structure modeling, a pre-processing program named ETP is proposed in this paper. The research showed that inelastic analysis of the whole structure based on fiber model is a efficient and successful method. In macro sense, the response of the whole structure can be gained. And in micro sense, component internal force and deformation as well as the stress and strain of the fiber can be gained. Combining with engineering example, the results of the whole structure response, component deformation and energy dissipation can be used for the research of the inelastic deformation and stress characteristics of the super high-rise building structure designed according to current codes under rare earthquake.

Keywords: inelastic; time-history analysis; PERFORM-3D; super high-rise building structure; Performance-based

Google Analytics(分析)工具引入本博客
我看了一些博客,包括陆新征的,发现他们都采用Google Analytics这个软件来统计自已的博客被别人的关注程度,这样可以方便按照浏览者的兴趣,放一些更加有用的东西上来,这个挺有意义的。Google Analytics的功能很强大,只要你修改一个跟踪代码进入你的网页表头,GOOGLE就会统计每天有多少人关注你的博客,什么国家的人,关注你什么话题多一些,我喜欢这些统计数据,这样一方面可以知道看我博客的人的爱好或某些贴子的受欢迎程度。GOOGLE公司真的很强人,不可思议的创新能力呀!!截个图给大家看看:


2008年10月25日,我们分析小组在韩小雷老师的指导下,完成了PERFORM-3D的一篇基于性能抗震设计方法工程应用的论文,题目是《基于纤维模型的超高层钢筋混凝土结构弹塑性时程分析及工程应用》 获得用户大会CUC08的优秀论文第一名,获得奖金3000元,并且会被推荐至《建筑结构》(核心期刊)上发表。以下是转载金土木公司的报道。
相关链接:http://www.bjcks.com/Company/datum/2008102901.asp

金土木首届结构软件全国用户大会在京召开

2008年10月24日至25日,第七届亚欧首脑会议在北京召开的同时,北京金土木软件技术有限公司举办了公司成立5年来的首届结构软件全国用户大会CUC'08。本次大会的主题是“交流、沟通、分享——搭建全国结构工程师交流工程软件应用的平台”。

 

本次用户大会有幸邀请到SAP2000创始人Edward L. Wilson教授、CSI公司创始人Ashraf总裁、范重教授、傅学怡教授、杨蔚彪教授、韩小雷教授、扶长生教授、顾磊教授、王健博士和刘鹏博士等二十余名业内专家和青年精英,就业内热点问题和结构创新设计做了精彩的演讲。共有全国近150家设计院和高校的200多位工程师参加了本次用户大会。

本次大会报告精彩纷呈,1天半的安排,让与会工程师感觉紧凑而丰富。其中傅学怡教授的报告《深圳大梅沙万科总部上部结构设计》,结构设计标新立异,让与会工程师耳目一新。

大会集结论文40篇,共320页。优秀论文评选产生1名一等奖(《基于纤维模型的超高层钢筋混凝土结构弹塑性时程分析及工程应用》,作者:韩小雷, 陈学伟, 林生逸,何伟球,郑宜,吴培烽,毛贵牛)2名二等奖(《SAP2000/ETABS与奥运/亚运场馆(部分)结构创新设计》,作者:顾 磊;《采用ETABS及美国规范设计境外某高层建筑结构的体会》,作者:易 勇,张蜀泸,刘兰花,冯 远)3名3等奖(《广州西塔建模分析中的若干问题探讨》,作者:郑 竹;《西南交通大学体育馆钢桁架动力特性及稳定分析》,作者:徐 麟;《海峡商务中心工程结构设计》,作者:王家林,陈彬磊),并特别颁发了2名应用开发鼓励奖(《混凝土梁配筋国标平法原位标注程序ETABS_POST的开发原理及应用》,作者:杨先桥;《利用ANSYS前处理与SAP2000 API建模探讨》,作者:冯克义)。应参会者对大会论文征集时间过短的意见,北京金土木软件技术有限公司在会上即时宣布征集2009年举办的第二届全国用户大会论文。

大会抽奖环节,由特邀报告人、CSI嘉宾和金土木公司领导共同抽出了27位幸运参会代表,分别颁发了GPS导航仪、数码相机、移动硬盘和签名著作。


 

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2006年,华南理工大学开展申请混凝土结构设计原理作为精品课程,打算制作高水平多媒体教学课件,我在蔡健老师,黄炎生老师及季静老师的指导下,开始编制混凝土结构设计原理智能试题库。这个并不是普通的课件,它是一个综合性计算程序,集合了几类的混凝土结构设计的题目,不但可以给学生练习使用,也可以用于教学,甚至可以拿出来试卷。这个程序主要是采用Borland Delphi v7.0编制而成,采用可拓展的DLL技术,方便以后升级。程序界面如图所示。
Download: 华南理工大学混凝土结构设计原理_智能试验库_v1.0




中洲观光门结构振动台试验
今天中洲观光门结构站振动台试验顺利完成,在广州大学的谭平老师,马玉宏老师,金建敏老师及陈建秋老师的努力下,准备了4个月的振动台试验终于完成了。作为分析小组的我们,看着自已设计的简化模型从电脑分析设计,到现场施工制作,直至振动台试验的完成,心里充满了喜悦。很难得的工程与科研的机会给我们这群小子遇上了。我们的分析小组,包括我,林生逸,吴培烽与毛贵牛四人在韩小雷才师及郑宜师兄的指导下,完成模型的分析与设计,最后协助广州大学完成试验方案。该结构非常复杂,包括以下特点:连体结构,高宽比大,钢混组合体系,异形墙肢,带粘滞阻尼器等等。虽然完成的试验,但后续的分析设计工作仍然需要继续,有试验资料作为辅助,可使工程分析更有信心。
The shaking table test of Zhongzhou Gate is finished today. With the help of Prof. Tang, Mrs. Ma, Mr. Jing and Mr. Chen, the test which is prepared for four month is finished perfectly. We, the other three students of my director and I, are the analysis team of the structure. Our job is to simulate the structure in computer, to analyze it, to design the model of it, to help the workers to build the model. When I saw the small scale model of the structure on the shaking table in the lab, I feel so happy. I think that is a very precious engineering experience and research opportunity for us. Under the direction of my professor, Mr. Han, we finally finished the test scheme and helped the lab of Univ. of Guangzhou to carry out. By the way, the building structure is very complicated, such as thin-and-tall, special-shape-pier, steel and concrete composite system, and viscous dampers. The test is over, however, the analysis and design work after the test should be continue. With the information and database of the test, we get more confidence for the analysis of engineering design.
更多的试验照片请看我的相册:http://www.dinochen.com/LoadMod.asp?plugins=album&class=11


工程分析小组:毛贵牛(风振分析)+陈学伟(总分析)+吴培烽(构件分析)

Program: SAP IV

Donwload: Sap4 Source Code

Title: Static and Dynamic Response of Linear Systems

Developer:  K-J. Bathe, E.L. Wilson and F. E. Peterson,
Department of Civil Engineering, University of California,
Berkeley 1973

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风振时程分析程序_windhist producer v1.0

总结一下去年的研究工作,其中有一项比较重要的就是“基于AR法的风振时程分析程序”的开发。这个程序主要是采用线性滤波法生成风速时程再通过转化变成风压力时程,主要是荷载数据的处理程序,而力学求解部分采用SAP2000或ETABS。程序界面如图所示。

通过面向对象的程序语言Borland Delphi 7.0编制具有前后处理及图形功能的风时程生成软件WINDHIST PRODUCERv1.0。该软件可实现通过导入SAP2000和ETABS生成的Excel表格,输入结构空间点分布。本软件可修改AR模型的阶次,积分精度、频率区间、计算步长等计算模型的参数,可调节计算模型的速度与精度。本软件的特色在于风荷载特性的输入与我国《荷载规范》紧密结合。程序可通过输入基本风压与地面粗糙度类别,按规范自动计算出梯度风高度、平均风指数和粗糙度系数并生成风速时程数据,也可以手动输入风特性参数。本软件还可以实现多样本时程的自动生成,可实现批量保存,批量导入SAP2000与ETABS的模型中,从而实现多样本的时程分析。
界面可见,非常的人性化,现在大部分风振研究大部分采用MATLAB来做,做出来的程序界面不友好,难与应用于实际工程。采用DELPHI编制界面以后,可以随时改变参数,马上生成风速曲线,且速度比MATLAB要快。
该程序的编写工作已写入论文《高层建筑结构风振时程分析软件的技术研究》将发表于《华中科技大学学报(城市科学版)》,在第八届全国结构计算理论与工程应用学术会议上发表。
Download:风振时程分析程序 windhist producer v1.0 技术说明文档 点击下载
风速模拟效果如下图所示。风振时程分析与《高钢规》简化公式的计算结果对比如图所示。以上内容在论文中均有提到。


 

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金土木结构软件全国用户大会将于2008年10月24日在北京召开!!
该会议论文集刊登了我们的四篇论文:
[1].基于纤维模型的超高层钢筋混凝土结构弹塑性时程分析及工程应用
.(原创)Perform-3D
[2].基于SAP2000 的复杂筏板基础分析与设计.(原创)SAP2000
[3].The Research of Time-History Response Analysis of Floor Vibration Based on Simulation of Group Walking.(已发表)SAP2000
[4].高层建筑结构风振时程分析及风速时程生成软件编制技术研究.(已发表)ETABS

北京一日游,从司马台长城穿越至金山岭长城


北京开了5天的14WCEE一直在开会而没有出去游玩北京,直到最后一天闭幕,在侯家健师兄的强力劝说之下,我决定与师兄一起去攀登司马台长城,并计划进行穿越,从司马台一直去到金山岭。我们在17号的下午出发,到晚上10点终于到了司马台的山脚下。第二天,我们六点半出发,从司马台出发,徒步穿越了一个又一个的炮台。在路上,风光无限。10月份的北京是最美丽的。大家可以看看相册的一些图片摘录。
司马台的相册:http://www.dinochen.com/LoadMod.asp?plugins=album&class=10
穿越完已经是12点钟了,我们再坐车去机场,最后离开了首都北京。终于,完成了“不到长城非好汉”的使命了。
I feel so tied when we were finished the five-day conference (14th world conference of earthquake engineering). That is my first time to Beijing, but I was so busy for the conference and has no chance to play outside. Finally, on the day before I would fly back to Guangzhou, I decided to go and play in Beijing. Simatai great wall is the best choice for me. Kent Huo is my partner and my tour guider in the journey. He has a perfect plan of that journey. We choose the cheapest journey to the Simatai. We started on 17th afternoon, and then took a long time but cheap bus to a place near Simatiai, and we shifted to Simatai by taxi. Finally, we reach Simatai at 10:00 pm. We were so tied and had a rest immediately. The second day, we started at early morning to go to visit the beautiful great wall. We walked throught the great wall form one emplacement to another, finally to reach the other point name Jingshanling great wall. It’s a very very long distance to walk, about 5 hours. However, the scene of every emplacement is very beautiful. So we also took a lot of pictures. I think the Beijing of October is the most beautiful. The pictures I took had put on internet in my website.

Dynamic Inelastic Numerical Simulation for a Shaking Table Test of a Full Scale Steel Moment Frame Structure based on OpenSEES
Chen Xuewei Han Xiaolei Jack CHEANG Lin Shengyi Mao Guiniu

ABSTRACT :
This paper presents a Dynamic nonlinear numerical simulation of a 4-story full-scale steel moment frame structure based on OpenSEES. Fiber model which has fewer DOFs is used for structure member simulation.
The responses of the structure under frequent, moderate and severe ground motions are predicted prior to the full-scale shake-table test. Correlated with the experimental results, the analytical results confirm the accuracy of the numerical simulation method, in both representing the inelastic behavior and the failure mechanism. The seismic responses and the collapse moment under severe ground motion are precise predicted. The study establishes the validity of the inelastic analysis method of overall structure based on fiber model, which is suitable for seismic analysis of overall structure.

KEYWORDS: Inelastic Time-History Analysis, Steel Frame, Full Scale Specimen, Shaking Table Test, Blind Analysis

Download:Dynamic Inelastic Numerical Simulation for a Shaking Table Test of a Full Scale Steel Moment Frame Structure based on OpenSEES

Numerical Analysis of Cyclic Loading Test of Shear Walls based on OpenSEES
Han Xiaolei Chen Xuewei Jack CHEANG Mao Guiniu Wu Peifeng

ABSTRACT :
Neither the original structure nor the altered structure of the Garden Hotel in Guangzhou accords with the ductile details of seismic design based on current Chinese codes. In order to explore the seismic performance of the original shear wall structure and the altered shear wall structure, the cyclic loading testes of the shear walls with different reinforcement ratio and constructional details are carried out. This paper presents the numerical analysis of the cyclic loading testes of shear walls with SWNA (Shear Wall Nonlinear Analysis) program. SWNA program is secondary developed based on OpenSEES and MVLEM. Compare with the testes, the numerical results confirmed the accuracy of this analysis procedure in representing the nonlinear behavior of the shear wall, such as the shifting of natural axis, shear deformation, local collapse and collapse mechanism. The analysis procedure based on MVLEM, which saves the calculating cost due to fewer DOFs, can stimulate the nonlinear behavior of the shear wall, and fit for global inelastic analysis and performance based design of tall building structure.

KEYWORDS: Shear wall, Cyclic loading test, OpenSEES, MVLEM, Nonlinear analysis

Download:Numerical Analysis of Cyclic Loading Test of Shear Walls based on OpenSEES.pdf

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2008年10月13日至17日,在北京市九华山庄召开了第十四届世界地震工程大会。大会分keynote, oral presentation, poster presentation and exhibition 四个环节。各个环节都很精彩,可是我分身乏术,我只能参加我感兴趣的几个section,如数值分析方法,混凝土结构及倒塌分析等。在会中见到很多国际知名的结构分析专家,如我的偶像而未曾见过面的,曾经帮过我很大忙的Matej Fischinger教授,kasai教授,Hikino博士等等。而且与久仰的结构大师Kabeyasawa见面及合照。
通过这个会议认识了很多大牛,还有认识了一个志同道合的Berkeley的学生,在coffee shop聊opensees的开发聊了很久,这个会议是国际地震工程学术的交流平台。在presentation里面,学到很多国际先进的试验及分析技术。我在POSTER里面宣讲我的两篇关于OPENSEES的论文,呵呵,在宣讲时也认识了一些朋友。这个会议太难忘了,于是如无意外,我会继续参加15wcee的。
The 14th conference of earthquake engineering is hold in Qiuhua hotel in Beijing on 13th October 2008. The conference for engineers work on earthquake is just like the Olympic game for athlete. The engineers and researchers form many countries has come here to discuss, to communicate, to learn and to see. The conference is made up by four parts: Keynote, oral Presentation, Poster Presentation and Exhibition. Every part of it is very wonderful. oral presentation and Poster Presentation are parallel, but I cannot divide myself into two parts, so I could only join several sections which I am very interested in. For example, simulation methods, concrete structure and collapse analysis. In the conference, I meet a lot of famous researchers such as Prof. Matej Fischinger who had help me a lot in my research but we just contact by Email. After the conference I had meet some new friend, some PhD students, such as Mr. Andreas. We meet in the coffee shop of the hotel. We talked about the technical problem about “OpenFresco” in the evening. The conference is the best communicate platform for academe of earthquake engineering. In the Presentation I have learned a lot of advanced technology of analysis and experiment. I also have an opportunity to show my two research papers. The conference is so great, and thenI think I will join the next world conference of earthquake engineering (15WCEE).

Research On The Seismic Design Of Transfer-Storey Structures Based On Philosophy Of Capacity Design Under Severe Earthquake
Jack CHEANG Han Xiaolei  Tang JianQiu   Chen Xuewei

ABSTRACT :
Both theoretical analysis and engineering applications of the transfer-storey structures are mostly limited in elastic stage under frequent earthquakes; the structural behavior after yielding under severe earthquake need to be studied by elastic-plastic analysis. And there is no specific and quantitative method to ensure that transfer structures can “resist severe earthquake without collapse”.  In this paper, the philosophy of capacity design is introduced into the design of transfer-storey structures and a practical design method for transfer structures under severe earthquake is presented. Through push-over analysis, various limit states of coupled shear walls are disclosed. Parameters that influence significantly the structure behavior such as integer coefficient of coupled shear walls, reinforcement ratio of coupling beams and height-width ratio of shear walls are highlighted. The shear overstrength of the coupling beams under the ideal limit state is reduced with reduction coefficient K. Overstrength of shear walls is derived by ultimate state analysis, which considers the axial forces increment of shear walls caused by shear overstrength of coupling beams. On this basis, mechanical characteristics and capacity based seismic design method of transfer storey under severe earthquake are studied by elastic-plastic analysis. A series of nonlinear dynamic time-history analysis has been completed, which considers the influence of varied parameters including the stiffness and mass of transfer structures, seismic protected intensity and the position of transfer storey. Moreover, the simplified formulas and the detail procedure for capacity design of transfer structures are presented.

KEYWORDS: philosophy of capacity design, design of transfer-storey, structural overstrength, push-over analysis, nonlinear dynamic time-history analysis, severe earthquake

Download:RESEARCH ON THE SEISMIC DESIGN OF TRANSFER-STOREY STRUCTURES BASED ON PHILOSOPHY OF CAPACITY DESIGN UNDER SEVERE EARTHQUAKE