作 者:
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机构地区:
东南大学
出 处:
《公路交通科技》
2005年第7期49-51,共3页
摘 要:
了解冻土路基温度场的动态变化对冻土路基稳定性分析具有重要的指导意义。本文根据冻土路基温度场动态变化时间序列的非线性性质,利用时间序列的Takens相空间重构方法,由一维的单变量观测数据序列进行相空间拓展,在拓展的相空间中得出冻土路基温度场动态变化时间序列的分维数,从而揭示了温度场动态变化的内在规律及其本质特征。
It's crucialo understand the dynamic change of frozen soil temperature field in analyzing stability of frozen soil roadbed.According to the nonlinear characteristics of temperature-time series of frozen soil roadbed,phase space was topologized from one dimension single variable time series based on Takens' phase space reconstruction,the fractal dimension of temperature-time series is acquired in reconstructed phase space.The results reveals intrinsic pattern and inherent characteristics of dynamic change of temperature.
关 键 词:
相空间重构
冻土路基温度场
分维数
领 域:
[交通运输工程]