| 基于小波分析和尖点突变模型的裂缝转异诊断 |
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| 引用本文： | 李雪红,徐洪钟,顾冲时,吴中如,冯士全. 基于小波分析和尖点突变模型的裂缝转异诊断[J]. 河海大学学报(自然科学版), 2005, 33(3): 301-305 |
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| 作者姓名： | 李雪红 徐洪钟 顾冲时 吴中如 冯士全 |
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| 作者单位： | 南京工业大学土木工程学院,江苏,南京,210009;河海大学水利水电工程学院,江苏,南京,210098;中国水利水电第六工程局二分局,辽宁,丹东,118216 |
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| 基金项目： | 国家自然科学基金重点资助项目(50139030)，教育部跨世纪优秀人才培养计划基金资助项目(2003512643)，江苏省高校自然科学研究计划项目(04KJB560047) |
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| 摘 要： | 对于带缝运行的水工混凝土结构，用小波分析和突变理论相结合的方法，建立裂缝转异诊断模型．结合工程实例，利用小波分析方法提取裂缝的时效变形，在此基础上建立裂缝的灰色尖点突变模型，提出裂缝的转异判据，结果表明，该方法是可行的和有效的．
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| 关 键 词： | 水工混凝土 裂缝 时效变形 小波分析 尖点突变模型 转异诊断 |
| 文章编号： | 1000-1980(2005)03-0301-05 |
| 修稿时间： | 2005-05-26 |
Abnormality diagnosis of cracks based on wavelet analysis and cusp catastrophe model |
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| LI Xue-hong,XU Hong-zhong,GU Chong-shi,WU Zhong-ru,FENG Shi-quan. Abnormality diagnosis of cracks based on wavelet analysis and cusp catastrophe model[J]. Journal of Hohai University (Natural Sciences ), 2005, 33(3): 301-305 |
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| Authors: | LI Xue-hong XU Hong-zhong GU Chong-shi WU Zhong-ru FENG Shi-quan |
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| Affiliation: | LI Xue-hong~1,XU Hong-zhong~1,GU Chong-shi~2,WU Zhong-ru~2,FENG Shi-quan~3 |
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| Abstract: | An abnormality diagnosis model was developed for hydraulic concrete structures operating with cracks occurring in their bodies by use of the wavelet analysis and cusp catastrophe theory. In combination with observation data of dam cracks, the wavelet analysis method was adopted for extracting time-dependent deformation of cracks. Based on that, a grey cusp catastrophe model was established, and an abnormality criterion for crack diagnosis was put forward. The results show that the method is feasible and effective. |
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| Keywords: | hydraulic concrete crack time-dependent deformation wavelet analysis cusp catastrophe model abnormality diagnosis |
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