武广客运专线通用轨道谱及其反演简化算法  

Study on general track spectrum and the simplified inverse algorithm of Wuhan-Guangzhou passenger special line

作　　者：陈宪麦[1,2] 向尚[1] 徐磊[3] 贺天龙[1] 陈文韬[1] 贾晨[1] 

机构地区：[1]中南大学土木工程学院,湖南长沙410075 [2]高速铁路建造技术国家工程实验室,湖南长沙410075 [3]西南交通大学牵引动力国家重点实验室,四川成都610031

出　　处：《铁道科学与工程学报》2016年第2期226-232,共7页Journal of Railway Science and Engineering

基　　金：国家自然科学基金资助项目(51478482);武汉铁路局科技发展计划资助项目(13G04;14G06)

摘　　要：基于铁路轨道精细化管理的需要,针对武广客运专线2013年全年的轨道不平顺检测数据进行功率谱密度的计算与统计处理,采用新的4参数拟合公式,建立武广客运专线上、下界限谱和建议谱的通用谱结构及拟合参数。同时,出于车-轨(桥)系统动力仿真的需要,基于国内已较为成熟的谱密度反演算法,考虑谱密度时频域转化的统一性,提出在获得谱密度结构及拟合参数的基础上,直接模拟任意波段及长度的轨道不平顺空间序列的简化算法。In order to meet the requirements of refined management of railway track, the paper described the in- vestigation on power spectrum density calculation and statistical processing for track irregularity inspection data of Wuhan - Guangzhou Passenger Special Line in 2013. The general spectrum structure of the upper - lower bound- aries and suggestion spectrum, were established by adopting a new four - parameter fitting formula. Besides, the track irregularity spatial series should be constructed with the requirement of vehicle - track （or vehicle - bridge） system dynamical simulation being taken into consideration. Therefore, based on the domestic inverse al- gorithms of spectrum density which have been relatively matured, and the consideration of the uniformity in the conversion process of spectrum density in time and frequency domain, this paper proposed a simplified inverse al- gorithm which can directly simulate any wave - band at any length of the track irregularity spatial series on the basis of acquiring the spectrum density structure and fitting parameters.

关 键 词：武广客运专线 拟合公式 通用轨道谱 轨道不平顺模拟 

分 类 号：U213.2[交通运输工程—道路与铁道工程] U211.5