| 基于Hilbert-Huang变换方法的结构损伤诊断 |
| |
| 引用本文： | 石春香,罗奇峰,施卫星.基于Hilbert-Huang变换方法的结构损伤诊断[J].同济大学学报(自然科学版),2005,33(1):16-20. |
| |
| 作者姓名： | 石春香 罗奇峰 施卫星 |
| |
| 作者单位： | 1. 同济大学,道路与机场工程系,上海,200092
2. 同济大学,结构工程与防灾研究所,上海,200092 |
| |
| 基金项目： | 国家自然科学基金资助项目 (5 0 3 780 71) |
| |
| 摘 要： | 在Hilbert—Huang变换理论和Hilbert阻尼谱的基础上，通过对深圳罗湖商务大厦模型振动台试验数据的处理分析，探讨Hilbert-Huang变换方法在结构损伤诊断中的应用．结果表明，Hilbert—Huang变换方法能够准确地确定模型结构在各级烈度地震后自振频率的变化，Hilbert阻尼谱能够定性地显示阻尼损失系数在地震加速度作用时间内的变化，而且阻尼损失系数对结构的破坏更加敏感，随着结构裂缝的出现与复合，Hilbert阻尼谱出现突变。
|
| 关 键 词： | Hilbert-Huang变换 阻尼损失系数 损伤诊断 振动台试验 |
| 文章编号： | 0253-374X(2005)01-0016-05 |
Hilbert-Huang Transform Based Approach for Structural Damage Detection |
| |
| SHI Chun-xiang,LUO Qi-feng,SHI Wei-xing.Hilbert-Huang Transform Based Approach for Structural Damage Detection[J].Journal of Tongji University(Natural Science),2005,33(1):16-20. |
| |
| Authors: | SHI Chun-xiang LUO Qi-feng SHI Wei-xing |
| |
| Institution: | SHI Chun-xiang1,LUO Qi-feng2,SHI Wei-xing2 |
| |
| Abstract: | The paper summarized the theory of Hilbert-Huang transform and Hilbert damping spectra and applied Hilbert-Huang transform in structural damage detection by disposing model vibration table test data of Shenzhen commercial edifice.We can get conclusions as follows:The method based on Hilbert-Huang transform can acutely determine natural frequency change under the different intensity of earthquake,and Hilbert damping spectra can qualitatively display the evolution of damping loss factor during the period of earthquake.The results also show the damping loss factor is more sensitive to structural damage,and mutation will appear with the crack occurring and disappearing. |
| |
| Keywords: | Hilbert-Huang transform damping loss factor damage detection vibration table test |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
