【作者】 龙许友；

【导师】 魏庆朝；

【作者基本信息】 北京交通大学 ， 道路与铁道工程， 2008， 博士

【摘要】 随着高速铁路的迅速发展,高速行车条件下,列车与线路之间的动力相互作用日益显著,由此引发的动力问题更加严重,也更趋复杂。一方面,列车对线路动力破坏作用加剧;另一方面,线路条件对行车安全性及乘坐舒适性的影响愈加敏感。传统铁路线路设计参数研究方法没有考虑车线之间复杂的动力相互作用,因而,未能准确地揭示平纵横断面参数与列车运行安全性及乘坐舒适性之间的内在联系,特别是对高速轨道交通尤为如此。因此,如何通过优化线路平纵横断面设计来提高列车运行安全性和乘坐舒适性、最大限度地减轻轮轨间动力相互作用是摆在现今铁道工程领域研究的一个突出课题。本研究在分析线路平纵横断面参数对高速列车行车安全性与乘坐舒适性影响的基础上,建立了较为完善的车线动力相互作用分析模型。利用该模型对线路平纵横断面设计参数、平纵断面组合及区段线路设计方案对车线系统动力响应的影响进行分析,从而得到高速铁路线路设计参数选取与匹配的基本原则,并提出线路平纵横断面设计方案的动力评价与优化方法,以期为高速铁路线路设计提供理论基础与参考建议。更多还原

【Abstract】 With the rapid development of high-speed railway, the dynamic interaction between trains and their nether supporting structures is much more strengthened owing to the sharply increase of train running speed, and the aroused dynamic problem becomes more serious and complicated accordingly. On one hand, the destructive effects of train load on the supporting structures are getting more severe. On the other hand, the influence of route geometric condition on running safety and ride comfort tends to be more sensitive. Conventional study on railway alignment parameter does not consider the complicated wheel/rail dynamic interaction. As a result, the effects of route alignment parameters on running safety and ride comfort cannot be estimated exactly, especially for high-speed railway. Therefore, how to improve running safety and ride comfort by means of designing proper route alignment becomes a prominent topic of current research in railway engineering.Based on the analyses of the effects of route alignment parameters on running safety and ride comfort, a model of dynamic interaction between vehicles and structures was established. By means of this model, an investigation was conducted into the effects of the alignment parameters, the matching of horizontal and longitudinal section as well as the district route geometric conditioin on the system dynamic responses in turn. As a result, the basic principles of alignment parameter selection and an evaluating and optimizing method for district route design were presented, which was expected to provide some theoretical basis and reference for high-speed railway route design. 141 Figures, 31 Tables, 158 References.更多还原