摘要
介绍Hurst重标度和分形学理论分析时间序列数据的方法。应用该方法研究了陈村混凝土重力拱坝变形的分形特性,评价了105裂缝对大坝结构性态的影响,并且由此对大坝的安全状况作了评价。最后得出大坝可以看作一个非线性复杂动力系统,分形维数可以从整体上描述大坝系统的动态变化特征并可以应用于大坝的病害诊断。
Hurst's rescaled range analysis and fractal theory for time series are applied to study the deformation fractal characteristics of the concrete gravity arch dam in Chencun Hydro Project.The effect of 105 crevices on dam structure is evaluated and the safety of the dam is assessed.It is found that the concrete dam may be regarded as a non-linear dynamic system and the fractal dimension can be used to describe the dynamic variation characteristics of the whole dam and applied to diagnose the probable problem of the dam structure.
出处
《水利学报》
EI
CSCD
北大核心
2004年第1期100-104,共5页
Journal of Hydraulic Engineering
基金
国家自然科学基金资助项目(50139030)
关键词
大坝
安全
分形
时间序列
concrete dam
safety
monitoring data
fractal
time series
