| 基于随机振动响应互相关函数的结构损伤识别试验分析 |
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| 引用本文： | 雷家艳,姚谦峰,雷鹰,刘朝.基于随机振动响应互相关函数的结构损伤识别试验分析[J].振动与冲击,2011,30(8):221. |
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| 作者姓名： | 雷家艳 姚谦峰 雷鹰 刘朝 |
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| 作者单位： | 1北京交通大学 土木建筑工程学院 北京 100044; 2厦门大学 建筑与土木工程学院 厦门 361005 |
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| 基金项目： | 国家科技部863项目(2007AA04Z420) |
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| 摘 要： | 提出了基于结构振动响应互相关函数分析的损伤识别方法。通过八层剪切型钢框架结构模型在模拟白噪声随机激励作用下的试验分析，利用相邻测点响应的互相关函数幅值向量变化，构造损伤识别因子进行结构损伤判定、定位及程度量化，结果表明该方法对结构损伤的识别具有很好的简易性及有效性，并为结构在线监测和分散式检测提供方法参考。
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| 关 键 词： | 损伤识别 互相关函数 随机振动 振动试验 |
| 收稿时间： | 2010-2-22 |
| 修稿时间： | 2010-6-28 |
Structural damage detection method based on correlation function analysis of vibration measurement data |
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| LEI Jia-yan,YAO Qian-feng,LEI Ying,LIU Chao.Structural damage detection method based on correlation function analysis of vibration measurement data[J].Journal of Vibration and Shock,2011,30(8):221. |
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| Authors: | LEI Jia-yan YAO Qian-feng LEI Ying LIU Chao |
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| Affiliation: | 1. School of Civil Engineering, Beijing Jiaotong University, Beiiing,100044, China;2. Department of Civil Engineering, Xiamen University, Xiamen,Fujian 361005, China |
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| Abstract: | A structural damage identification technique based on correlation function analysis of vibration measurement data was proposed.An 8-storey steel shear building model was chosen as example in the case verification.The results demonstrate that accident magnitude change of correlation function can be used to locate the damage by comparing the shape changes between damaged and undamaged samples.The value of CVAC is effective to determinate whether the damage has happened or not,and it can be used as a reference... |
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| Keywords: | damage identification correlation function stochastic vibration vibration test |
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