“新时速”动车组在广深线运用的质量问题分析

针对“新时速”动车组在广深线运营以来出现的影响安全运营和舒适性的主要质量问题,分析其产生的原因,并提出了解决措施。     

Delay Restoration of Single-Track Railway Rescheduling

On the basis of analysis of the principle of delay restoration in a disturbed schedule, a heuristic algorithm for rescheduling trains is developed by restoring the total delay of the disturbed schedule. A discrete event topologic model is derived from the original undisturbed train diagram and a back propagation analysis method is used to label the maximum buffer time of each point in the model. In order to analyze the principle of delay restoration, the concept of critical delay is developed from the labeled maximum buffer time. The critical delay is the critical point of successful delay restoration. All the disturbed trains are classified into the strong-delayed trains and the weak-delayed trains by the criterion of the critical delay. Only the latter, in which actual delay is less than its critical delay, can be adjusted to a normal running state during time horizon considered. The heuristic algorithm is used to restore all the disturbed trains according to their critical details. The cores of the algorithm are the iterative repair technique and two repair methods for the two kinds of trains. The algorithm searches iteratively the space of possible conflicts caused by disturbed trains using an earfiest-delay-first heuristics and always attempts to repair the earliest constraint violation. The algorithm adjusts the weak-delayed trains directly back to the normal running state using the buffer time of the original train diagram. For the strong-delayed trains,the algorithm uses an utility function with some weighted attributes to determine the dynamic priority of the trains, and resolves the conflict according to the calculated dynamic priority. In the end, the experimental results show that the algorithm produces ＂good enough＂ schedules effectively and efficiently in disturbed situations.     

兰州内燃动车组供电及监控系统介绍与调试

介绍了兰州内燃动车组DC600V供电及微机监控网络的调试情况。     

单片微机在地基系数测试中的应用

介绍单片微机用于地基系数测试装置中的特点,以及该测试系统的硬、软件设计原理.     

基于实体单元的牵引梁计算分析

采用ANSYS软件对270km/h旅客动车组的牵引梁强度进行计算分析，找到牵引梁强度不足的症结，对用实体单元精确模拟牵引梁结构受力状况做了一些探索。     

京杭大运河镇江段土工织物滤层现场观测分析

在现场取样和室内试验的基础上，分析京杭大运河江苏镇江段航道整治采用的土工织物滤层特性的变化规律，并根据目前土工织物滤层的使用情况和实测资料，应用数学模型预测和分析土工织物滤层的使用年限。     

605型电传动内燃动车组动力传动系统的控制和调节

德国DB铁路客运和旅游运输公司的605型电传动内燃动车组采用了摆式车体技术,其动力传动系统的设计采用了具有环境相容性好的柴油机的牵引设备，并采用了现代控制策略；整个控制、调节和监控装置之间，利用新一代总线系统进行通信。文中介绍了动车组动力传动系统和辅助是源的设计原理、柴油机控制原理和控制装置的结构；还介绍了SIBAS32控制系统及柴油机和牵引时机的调节装置。     

基于网状线路的京沪高速铁路列车运行图编制理论的研究

列车运行图是铁路运输工作的综合计划,是行车组织工作的基础,在整个铁路运输工作中占有十分重要的地位.计算机编制列车运行图是一项实用性强、难度大而又必须解决的实际应用型工程,经过多年的研究和试验,计算机编制列车运行图在经历了编制双线区段列车运行图、单线区段列车运行图、客车方案图、枢纽地区列车运行图以及网状线路列车运行图的发展过程后,无论是在理论上还是在实际应用中都取得了较大发展.