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.
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.
出处
《河海大学学报(自然科学版)》
CAS
CSCD
北大核心
2005年第3期301-305,共5页
Journal of Hohai University(Natural Sciences)
基金
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)
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
hydraulic concrete
crack
time-dependent deformation
wavelet analysis
cusp catastrophe model
abnormality diagnosis