| 基于提升小波熵指标的梁板组合桥损伤识别研究 |
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| 引用本文： | 孙增寿,范科举.基于提升小波熵指标的梁板组合桥损伤识别研究[J].振动与冲击,2012,31(11):114-117. |
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| 作者姓名： | 孙增寿 范科举 |
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| 作者单位： | 1. 郑州大学土木工程学院，郑州，450002；
2. 中铁大桥局集团第一工程有限公司，郑州，450053 |
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| 基金项目： | 国家自然科学基金项目(50878198) |
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| 摘 要： | 利用提升小波和熵的特点，提出了基于提升小波熵的结构损伤识别方法，给出了提升小波时间熵和相对提升小波熵两个结构损伤指标。通过梁板组合桥的数值模拟表明，提升小波时间熵指标能较好地识别结构的损伤时刻，而相对提升小波熵指标能较好地识别结构的损伤位置。
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| 关 键 词： | 提升小波 提升小波熵 结构损伤识别 |
| 收稿时间： | 2010-9-15 |
| 修稿时间： | 2011-7-8 |
Damage detection for a gird-slab combined bridge based on lifting wavelet entropy indexes |
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| SUN Zeng-shou,FAN Ke-ju.Damage detection for a gird-slab combined bridge based on lifting wavelet entropy indexes[J].Journal of Vibration and Shock,2012,31(11):114-117. |
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| Authors: | SUN Zeng-shou FAN Ke-ju |
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| Affiliation: | 1.college of civil engineering, zhengzhou university, zhengzhou 45002,china;
2.the first engineering Co., Ltd., ZTB Group, zhengzhou 45002,china |
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| Abstract: | Using characteristics of lifting wavelet and entropy,the structural damage identification method based on lifting wavelet entropy was proposed here.Lifting wavelet time entropy index and relative lifting wavelet entropy index were put forward.The new method and damage indexs were verified in numerical simulation of a gird-slab combined bridge.The analysis results showed that the lifting wavelet time entropy can identify structural damage time moment and the relative lifting wavelet entropy can identify structural damage location. |
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| Keywords: | lifting wavelet lifting wavelet entropy structural damage identification |
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