Equating incremental dynamic analysis with static nonlinear analysis at near-field excitation

来源 :Earthquake Engineering and Engineering Vibration | 被引量 : 0次 | 上传用户:allenhuqiqi
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
In an incremental dynamic analysis(IDA) using a set of ground motion records,nonlinear time history analysis needs to be performed on structures.It is well recognized that IDA calls for high computational efforts and the results are highly sensitive to selected ground motions.As a result,alternative static methods are needed.This study aims to introduce a new double-stage(N1- N2) static method to estimate capacity curves of MR frames.The technique is regulated to resemble IDA results with specific emphasis on near-field ground motions.Using an ensemble of 56 near-field earthquake records,required ID As have been carried out for SAC-Los Angeles 3-,9- and 20-story buildings and an additional 15-story building.The results of the proposed static method are compared with those from IDA,displacement-based adaptive procedure(DAP),and multimodal procedure(MMP).The results indicate that in addition to enhanced accuracy,very little time is required in the case of N1-N2 method.Thus,for the 3-story structure,the time required is less than 1 minute.The proposed N1-N2 method shows the best accuracy in terms of lateral mechanisms for the 15-story frame while for the other cases,the first mode load pattern leads to the best accuracy. In an incremental dynamic analysis (IDA) using a set of ground motion records, nonlinear time history analysis needs to be performed on structures. It is well recognized that IDA calls for high computational efforts and the results are highly sensitive to selected ground motions. As a result, alternative static methods are needed. This study aims to introduce a new double-stage (N1-N2) static method to estimate capacity curves of MR frames. The technique is regulated to resemble IDA results with specific emphasis on near-field ground Uses an ensemble of 56 near-field earthquake records, required ID As have been carried out for SAC-Los Angeles 3-, 9- and 20-story buildings and an additional 15-story building. The results of the proposed static method are compared with those from IDA, displacement-based adaptive procedure (DAP), and multimodal procedure (MMP). results results in addition to enhanced accuracy, very little time is required in the case of N1-N2 method.Thus, for the 3-stor y structure, the time required is less than 1 minute.The proposed N1-N2 method shows the best accuracy in terms of lateral mechanisms for the 15-story frame while for the other cases, the first mode load pattern leads to the best accuracy.
其他文献
首都经济学家探讨如何建立现代企业制度问题杜一,金新仁“中国市场经济论坛”第十八次研讨会近期在北京召开。来自首都大专院校、研究机构、政府有关部门的60多位专家、学者和实
新世纪新阶段,思想政治工作面临许多新情况和新问题。要使思想政治工作适应时代的发展与要求,更加贴近实际、贴近生活、贴近群众,就要做到“三个注重”。即注重调查研究、注
美国在线公司(AOL)的工程师正在同隶属于 Mozilla.org(公开源代码的浏览器开发组织)的开发者一起,寻找一条新的途径来创建浏览器界面。他们的最新成果是推出了一种可扩展的
目的 评价中枢多巴胺转运蛋白显像剂~(123)I-β-CIT在检测帕金森病中的应用价值。方法 氯胺-T标记法制备~(123)-β-CIT,对正常猴与MPTP诱导的偏侧PD病猴进行SPECT显像研究,并
乡镇党委、政府已婚经是市场经济条件下的党委、政府,应本着“有进有退,进退有序”的原则,适应已经变化了的客观形势,科学运作。 The township and town party committees and g
扩大农村基层民主,实行村民自治,是党领导我国亿万农民在改革实践中继家庭承包经营之后的又一伟大创举。党的十五届三中全会系统地提出了扩大农村基层民主,实行村民自治的指
自《中共中央关于在全党兴起学习贯彻“三个代表”重要思想新高潮的通知》下发和胡锦涛同志去年7月1日在“三个代表”重要思想理论研讨会上的讲话发表以来,一个学习贯彻“三
高二人教版《物理》(必修加选修)教材中介绍的学生实验“传感器的简单应用”,只是通过用多用电表显示敏感元件的阻值变化来说明传感器特性。事实上,这样的实验做起来平淡,激
2005年4月11日至12日,全国邮政商函业务现场会在上海召开,来自全国各个省会和地市的百名邮政局局长参加了会议。国家邮政局局长刘安东、副局长冯新生到会并作了重要讲话。刘
在学习力学的过程中,许多同学常由于受力分析不正确而影响问题的正确解决,在考试时会因此而丢不少分.那么如何才能少犯错误?正确进行受力分析的关键在什么地方呢?一、进行受