驼峰溜放区行车性能分析及线路设计参数研究

发布时间：2018-05-18 02:22

本文选题：驼峰 + 溜放区　；参考：《北京交通大学》2017年博士论文

【摘要】：现有驼峰设计规范及相关文献在驼峰线路设计方面缺乏对车辆自身溜放安全性的考虑,研究驼峰线路设计参数与车辆行车性能之间的关系,有助于通过改善线路条件来提高车辆溜放安全性。本文在分析驼峰车辆溜放过程的基础上,采用试验研究和理论研究相结合的方法,探明车辆溜放至驼峰不同区域的行车性能,并分别从线路设计及线路养护维修角度,研究驼峰线路设计参数与车辆行车性能之间的关系。主要研究工作如下:(1)建立驼峰溜放区线路条件与车辆溜放速度之间的关系。在总结驼峰溜放区线路设置方式的基础上,分析溜放车辆运行过程,建立了车辆溜放速度计算模型,并运用该模型研究了加速坡坡长与坡度匹配关系对车辆溜放速度的影响规律。(2)进行驼峰溜放区行车性能试验研究。在介绍丰西编组站驼峰车辆行车性能试验的基础上,归纳总结并分析比较了不同车型车辆在该驼峰溜放时的试验结果。通过分析研究现场试验所反映的驼峰溜放区车辆行车性能,提出驼峰溜放区道岔尖轨是影响车辆溜放安全的薄弱位置。(3)建立驼峰溜放区车辆行车性能计算模型。在综合考虑驼峰溜放区复杂的平纵断面线路条件、车辆及轨道参振特性及轮轨间动态几何接触关系的基础上,建立了驼峰溜放区行车性能计算分析模型,运用所建模型分别计算研究了主型溜放车辆C70、GQ70、P70及X70在空载和满载工况下溜放时的行车性能,并将计算结果与实车试验结果进行对比分析,验证了所建车辆行车性能分析模型的合理性。(4)研究驼峰关键线路设计参数对车辆行车安全性的影响。根据驼峰溜放区车辆行车性能试验及理论研究中所提出的线路薄弱位置,有针对性的选择平纵断面线路参数,运用所建溜放车辆行车性能计算模型,研究了第一分路道岔与岔前曲线间夹直线、加速坡与中间坡变坡点位置、加速坡与中间坡坡度代数差、加速坡坡长等线路参数对车辆行车安全性的影响,并运用计算结果对既有驼峰设计规范中关于线路设计参数的规定进行了检验。(5)从提高车辆行车性能角度对驼峰线路设计参数进行优化研究。运用所建溜放车辆行车性能计算模型,采用车辆行车平稳性评价指标,从提高车辆行车性能角度,对驼峰溜放区平纵断面设计参数进行了优化研究,并进一步运用遗传算法与BP神经网络进行溜放区平纵断面线路参数匹配关系研究,得到了驼峰第一分路道岔与岔前曲线间夹直线长度以及加速坡与中间坡间变坡点距尖轨距离二者间的最优匹配关系。(6)研究线路条件变化对车辆行车性能的影响。以实例分析的方式,针对脱轨事故频发的某驼峰溜放区,运用所建溜放车辆行车性能计算模型,研究了线路几何形位变化与车辆溜放安全之间的关系,并针对计算实例中线路条件所发生的变化,分析研究了尖轨轨距变化、纵断面沉降变形等线路条件变化对车辆行车性能的影响。
[Abstract]:The existing design specifications of hump design and related literature are lacking in the design of hump line. The study of the relationship between the design parameters of the hump line and the performance of the vehicle is helpful to improve the safety of the rolling stock by improving the line conditions. Using the method of combining the experimental research and the theoretical research, this paper explores the driving performance of the vehicle slipping to different hump regions, and studies the relationship between the design parameters of the hump line and the performance of the vehicle from the line design and the line maintenance and maintenance. The main research work is as follows: (1) establishing the line conditions and vehicle skating in the hump skating area The relationship between speed. On the basis of summarizing the line setting mode of the hump skating area, the running process of the skating vehicle is analyzed, and the calculation model of the speed of the rolling stock is established. And the model is used to study the influence law of the matching relationship between the length and the slope of the sloping slope on the speed of the rolling stock. (2) the test of the running performance of the hump skating area is carried out. On the basis of introducing the performance test of the hump vehicle in Feng Xi marshalling station, the results of the test of different vehicles in this hump are summarized and compared. Through the analysis and study of the vehicle performance in the hump skating area, it is put forward that the turnout rail in the hump skating area is the weakness that affects the safety of the vehicle skating. (3) establish a calculation model for the performance of the vehicle in the hump skating area. On the basis of comprehensive consideration of the complex horizontal and longitudinal section line conditions, the vibration characteristics of the vehicle and track and the dynamic geometric contact between the wheel and rail, the calculation and analysis model of the traffic performance in the hump skating area is established, and the main model is calculated and studied by the built model. The performance of C70, GQ70, P70 and X70 for skating in empty and full load conditions, and comparing the calculation results with the actual test results to verify the rationality of the vehicle performance analysis model. (4) study the influence of the design parameters of the key line of the hump on the safety of the vehicle. In the performance test and theoretical study of the vehicle, the line parameters of the vertical section are selected, and the line between the first shunt and the front of the fork, the position of the acceleration slope and the middle slope, the algebraic difference between the accelerated slope and the middle slope, and the difference of the algebraic difference between the accelerated slope and the middle slope are studied. The influence of the line parameters on the safety of vehicle driving, and the calculation results are used to test the rules of the design parameters of the existing hump design. (5) the optimization of the design parameters of the hump line is studied from the angle of improving the vehicle performance. The evaluation index of vehicle driving stability is to optimize the design parameters of the flat longitudinal section of the hump skating area from the angle of improving the vehicle performance, and further use the genetic algorithm and BP neural network to study the line parameters matching relationship between the flat and longitudinal section of the skating area, and get the straight line between the first branch switch and the front curve of the fork. The optimum matching relation between the length and the distance between the acceleration slope and the distance of the point rail distance between the middle slope and the middle slope is two. (6) the influence of the line condition changes on the vehicle performance is studied. In the case of an example analysis, the geometric shape change of the line is studied by using the model of the performance calculation of a skating vehicle in a hump skating area with frequent derailment accidents. The relationship between the change of the vehicle skating and the safety of the vehicle and the change of the line conditions in the calculation example, the influence of the change of the rail gauge and the deformation of the longitudinal section on the vehicle performance is analyzed and studied.
【学位授予单位】：北京交通大学
【学位级别】：博士
【学位授予年份】：2017
【分类号】：U291.43

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