大坝安全监测资料的非线性检验

引入了基于现代统计学中“bootstrap”理论的替代数据方法，实现了对大坝安全监测资料的非线性检验．在详细阐述了替代数据法的基本理论和实现方法基础上，通过分析丰满大坝的位移监测数据，确定了位移监测数据中确实存在非线性成分，并且这种非线性不是静态非线性的测量函数所引起的，而是大坝动力系统本身非线性的表现．从而为判定大坝监测资料的非线性提供了理论依据和检验方法．

Detecting Nonlinearity in the Dam's Monitoring Data

Nonlinearity analysis of dam's monitoring data is based on the existing of nonlinearity which is tested by all kinds of methods.In the paper,surrogate data method based on bootstrap methods of modern statistics theory is addressed and applied to the nonlinearity testing of Feng Man Dam's monitoring data.The result conclude that there exist nonlinear ingredients in the displacement data and the non linearity is not caused by the static nonlinear transformation measurement,but is the manifest of the dam's dynamic system,which provides the theory basis and testing method for further nonlinear analysis.