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以合武客运专线动检车实测轨道不平顺数据为统计样本,采用轨道不平顺变化率和线性插值方法以及经验模态分解法对轨道不平顺异常值和趋势项进行处理,并运用经典周期图法对统计样本进行空间谱估计,同时采用最小二乘法对轨道不平顺功率谱进行拟合。研究结果表明,不平顺功率谱谱线普遍低于美国6级谱,在长波波段能量较低,但存在周期性成分,同时温度力对无缝线路影响显著。缓和曲线与圆曲线的分析结果都表明内轨平顺状况优于外轨。
Taking the track irregularity data measured by the motorcycles of the passenger dedicated railway as a statistical sample, the irregular orbit irregularities and trend items are treated by the rate of change of the track irregularity, the linear interpolation method and the empirical mode decomposition method, and the classical periodic map The method of spatial statistics is used to estimate the statistical samples, and the least square method is used to fit the track irregularities. The results show that the spectrum of ununiform power spectrum is generally lower than that of the US 6-level spectrum, and has low energy in the long-wave band but periodic components. Meanwhile, the temperature force has a significant effect on the seamless line. The results of the analysis of both the mild curve and the circular curve show that the inner rail is better than the outer rail.