框架结构模态参数识别时域方法的比较研究

甘琳; 李海龙

doi:10.13204/j.gyjz201308006

框架结构模态参数识别时域方法的比较研究

doi: 10.13204/j.gyjz201308006

甘琳¹,
李海龙²

1.
1. 重庆大学建设管理与房地产学院,重庆400045;
2.
2. 重庆大学土木工程学院,重庆400045

基金项目:

重庆市建设科技计划项目(2011-2-86;2011-2-80)

详细信息

作者简介:
第一作者：甘琳, 女, 1972年出生, 博士, 副教授。电子信箱：yfyang@cqu.edu.cn

中图分类号: TU323.5
计量
- 文章访问数: 123
- HTML全文浏览量: 8
- PDF下载量: 118
- 被引次数: 0
出版历程
- 收稿日期: 2012-11-23
- 刊出日期: 2013-08-20

COMPARATIVE STUDY ON MODAL PARAMETER IDENTIFICATION TIME DOMAIN METHODS FOR FRAME STRUCTURE

Gan Lin¹,
Li Hailong²

1.
1. College of Construction Management and Real Estate,Chongqing University,Chongqing 400045,China;
2.
2. College of Civil Engineering,Chongqing University,Chongqing 400045,China

摘要

摘要: 通过对4层钢框架模型试验得到环境激励下的位移响应，运用ITD、STD、复指数法、ERA、随机子空间法等5种时域方法来识别结构的模态参数，从而验证了5种方法在结构参数识别中应用的可行性。5种方法对频率的识别比较精准，对阻尼比的识别精度相对较差。通过与试验数据对比，同时对大量数据的处理发现，随机子空间法和ERA法对模态参数的识别最为精准，STD法和复指数法次之，ITD法的识别精度较差。
- 环境激励 /
- 钢框架结构 /
- 模态参数识别 /
- 模型试验
Abstract: Through a four-story steel frame model experiment under enviromental excitation, the displacement response of each measuring point was recorded, and five time domain methods(the ITD method, STD method, the complex index method, the ERA method and the stochastic subspace method) were used to identify the modal parameters.An acceptable and satisfying result shows that all the methods can be applied to the building structure.The 5 methods have higher precision for identifying frequency, and have relative lower precision for damping ratio.Compared with STD method and the complex index method, the Stochastic Subspace method and the ERA method have higher precision for identifying the model parameters, the ITD method has lower precision.
- ambient excitation /
- steel frame structure /
- modal parameters identification /
- model test

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参考文献(9)

[2] 李中付,宋汉文,华宏星.基于环境激励的模态参数识别方法综述[J].振动工程学报,2000,21(3):1－5.

Juang J N. Applied System Identification [M].New JeRsey:?PRentice-Hall Inc,1994:116－148.

[3] 李国强,李杰.工程结构动力检测理论与应用[M].北京:科学出版社,2000:45－55.

[4] Hung C F, Ko W J, Tai C H. Identification of Dynamic Systems?fRom Data Composed by Combination of TheiR?Response Components [J].EngineeRing StRuctuRes,2002,24:1441－1450.

[5] 徐良,江见鲸,过静珺.广州虎门悬索桥的模态分析[J].土木工程学报,2002,35(1):25－340.

[6] Ren W X, Zong Z H. Output-Only Modal PaRameteR Identification?of Civil EngineeRing StRuctuRes[J].StRuctuRal EngineeRing and?Mechanics,2004,17(3/4):429－444.

[7] Koh C G, Hong B, Liaw C Y. SubstRuctuRal and PRogRessive?StRuctuRal Identification methods [J].EngineeRing StRuctaRes,2003,25(12):1551－1563.

[8] 崔飞.桥梁结构参数识别及承载力分析[D].上海:同济大学,2003.

[9] 李海龙,环境激励下结构模态参数识别方法研究[D].重庆:重庆大学,2012.

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