摘要
变点分析理论旨在用统计学的方法解决非线性数据处理的有关问题。将模型变点理论用于桥塔变形分析 ,论述了理论原理、分析方法。对观测序列作滑动检验 ,以最优分割点为阀分段建模 ,用 F检验法推断模型变点的存在。结果表明 ,该方法能准确地定位一维或多维模型变点的存在、位置和跃度 ,从而提高变形数据分析的准确度 。
Change point theory is aimed to solve some problems of nonlinear data processing by way of statistics.Applying the model change point theory to the deformation analysis of bridge tower, the principle of theory and the way of analysis are expounded. Applied slide test to the observated data serial and divided the data into several groups in the place of optimal divided point, then a model for each group data was established, and the model change point was deduced by way of F test.Example shows: in this way, we can determine accurately the number,place and change degree of one to more dimensional model change points, so that we can improve the accuracy of serial analysis, provide some useful informations for quality assessment of bridge project and for safety running on buildings.
出处
《铁道学报》
EI
CAS
CSCD
北大核心
2002年第4期100-104,共5页
Journal of the China Railway Society
关键词
模型变点
桥塔位移
非线性
时序分析
变形监测
model change point
displacement of bridge tower
nonlinearity
time serial analysis
