摘要
峰值管理和均值管理是评价轨道平顺状态的常用方法。为对比分析这两种方法的特点,采用傅里叶逆变换反演美国六级高低不平顺轨道谱,用反演的随机样本来分析轨道不平顺截止波长和周期不平顺对两种方法评价结果的影响。研究结果表明:轨道不平顺截止波长对均值管理和峰值管理的评价结果均影响很大,均值管理的稳定性较峰值管理好;峰值管理可以反映出周期不平顺幅值或波长对轨道不平顺的影响,均值管理只能反映周期不平顺幅值对轨道不平顺的影响,无法反映波长的影响。建议制定连续的扣分管理值,以确保峰值管理在不同截止波长下的稳定性;建议在均值管理中引入波长权重。
Peak management and standard deviation management are common methods to evaluate track irregularity. In order to analyze the characteristics of these two methods,the paper inversed the American sixth-level vertical profile irregularity track spectrum by inverse Fourier transform,the influence of cutoff wavelength of track irregularity and periodic irregularity on the two evaluation methods was analyzed by random samples of inversion. The results showed that the cutoff wavelength of track irregularity has a significant impact on the evaluation results of these two methods,standard deviation management is more stable compared with peak management,peak management can reflect the influence of amplitude or wavelength of periodic irregularity on track irregularity, standard deviation management can only reflect the influence of amplitude which cannot reflect the influence of wavelength. It is recommended that a continuous value deduction management should be formulated to ensure the stability of peak management with different cutoff wavelength,and wavelength weight should be introduced in the standard deviation management.
出处
《铁道建筑》
北大核心
2015年第6期147-151,共5页
Railway Engineering
基金
中国铁路总公司科技研究开发计划项目(2013G009-D)
关键词
轨道不平顺
峰值管理
均值管理
Track irregularity
Peak management
Standard deviation management
