CAJ | 학술논문

以上海轨道交通实测的无砟轨道不平顺数据作为样本,利用经典周期图法计算其轨道不平顺谱,进而得到原始轨道平均谱.基于轨道不平顺七参数拟合谱模型,利用非线性最小二乘法对原始轨道平均谱进行拟合,得出轨道谱的拟合参数.最后,将计算所得的无砟轨道谱拟合曲线与美国6级谱、德国高低干扰谱和中国七参数谱对比分析,结果表明:在中长波范围内,轨距、水平和高低不平顺状态较为优良,低于美国6级谱、德国高低干扰谱和中国干线轨道谱,而轨向不平顺谱则与美国6级谱水平相当;在短波范围内则无砟轨道谱谱值较大.
이상해궤도교통실측적무사궤도불평순수거작위양본,이용경전주기도법계산기궤도불평순보,진이득도원시궤도평균보.기우궤도불평순칠삼수의합보모형,이용비선성최소이승법대원시궤도평균보진행의합,득출궤도보적의합삼수.최후,장계산소득적무사궤도보의합곡선여미국6급보、덕국고저간우보화중국칠삼수보대비분석,결과표명:재중장파범위내,궤거、수평화고저불평순상태교위우량,저우미국6급보、덕국고저간우보화중국간선궤도보,이궤향불평순보칙여미국6급보수평상당;재단파범위내칙무사궤도보보치교대.
Taking the measured unballasted track irregularity data in Shanghai Metro as samples,the track irreg-ularity spectrum is calculated by applying the periodogram arithmetic and the average spectrum is obtained ac-cording to the basic overall mean value. Based on tack irregularity spectrum model from China Academy of Railway Sciences,the optimization parameters of the fitting mean spectrum is calculated by using the nonlinear least square arithmetic. Finally,this paper contrasts the fitting mean spectrum with US class 6 railways,Ger-man railway spectra of high irregularity and low irregularity,and China main railway spectra. The results show that the conditions of the gauge,level and profile irregularity are good and the alignment irregularity spectrum is equivalent to US class 6 railways in mid-and long wavelength range,While in the short wavelength range, the value of measured track irregularity spectrum generally turns out to be larger.