屏蔽门安装位置与列车停车点的关系探讨

本文介绍了车辆系统与车载信号系统的电气接口及其控制原理，通过分析列车停站控制过程的实时运行数据找到停站精度差的原因，提出屏蔽门安装位置确定的方法，并给出了列车停车位置与屏蔽门位置不一致的对策。     

浅析沥青路面施工组织以碾压为中心的重要性

通过对施工组织中的主要矛盾进行分析,确定以碾压作为施工组织的中心,可以更好地保证路面施工质量.     

On the overriding issue of train front end collision in rail vehicle dynamics

A three-dimensional dynamic model of crashed vehicles coupled with moving tracks is developed to research the dynamic behaviour of the train front end collision on tangent tracks. The three-dimensional dynamic model consists of a crashed vehicle model, moving track models, a simple wheel–rail contact model, a velocity-based coupler model and the model of energy absorption and anti-climbing devices. The vector method dealing with the nonlinear wheel–rail geometry is put forward in the paper. The developed model is applicable in the scope that central collisions occur on tangent tracks at low speeds. The examples of the vehicle impacting with a rigid wall and the train front end collision are carried out to obtain the dynamic responses of vehicles. The overriding issue is studied on the basis of the wheel rise in train collisions. The results show that the second bogie of the first colliding vehicle possesses the maximal wheel rise. The wheel rise increases with the increase of vehicles. However, the number of vehicles has tiny influence on the overriding in train collisions at low speeds. On the contrary, the impact speed has significant influence on the overriding in train collisions. The wheel rise increases rapidly if the impact speed is close to the critical speed of overriding. The large wheel rise is principally generated by the great coupler force related to the rigid impact in the axial direction.     

斜拉桥主梁悬浇用预应力粗钢筋张拉控制

介绍了斜拉桥平衡长悬臂预应力施工的关键技术,提出了精轧螺纹钢在张拉控制的主要技术措施。对桥梁的精轧螺纹钢张拉施工具有一定的参考价值。     

胶轮导轨电车滚振试验台有限元分析

胶轮导轨电车滚振试验台是研究胶轮导轨电车轮轨关系的重要平台,激振单元是试验台的核心部件。以胶轮导轨电车滚动振动试验台的激振部分为研究对象,利用UG建立三维模型,并将其导入到ANSYS中进行有限元分析,分析试验台激振部分在最大载荷下的合位移、等效应力和等效应变的等值线云图,以及前5阶固有频率及其相应的振型。分析结果表明:伺服液压缸的存在可以提升试验台的结构特性;试验台的1阶固有频率远离激振频率;通过增加调整垫铁的数量可以提高系统的固有频率。分析验证试验台结构设计的合理性,分析数据为试验台结构的优化提供参考依据。     

沥青混凝土路面碾压技术

介绍了沥青混凝土压实度的重要意义、影响压实效果的因素、碾压程序、纵横向接缝的碾压、施工现场的质量管理及检验的主要内容,旨在提高沥青混凝土路面的施工质量.     

Wheel/rail interface management in heavy haul railway operations—applying science and technology

The primary objective of the paper is to review science and technologies that have been developed by various scientists and engineers over the years and that have made it possible to push the limits within the wheel/rail interface in the heavy haul railway environment. After describing the wheel/rail stress-state and its consequences, preventative and corrective measures that can assist in optimising wheel and rail life, and thus reduce costs, are reviewed. The significant contribution of measurement and monitoring technologies to quantify the stress-state of the wheel/rail system is highlighted. Finally, a brief review of the fundamentals of contact mechanics, vehicle dynamics and wheel/rail interface analysis software is given.     

汽车车身电子技术试验台的开发

阐述汽车车身电子技术试验台的作用、意义及开发过程，给出其开发后的电路图及实物照片，多次试运行证明了电路开发设计的正确性。该试验台的开发将有助于理论结合实际、去伪存真、真正掌握现代轿车车身电子设备的检修技能。     

宁扬旧路面改造工程的质量控制

介绍了宁扬旧路面改造工程中沥青混合料质量控制，沥青路面摊铺、碾压质量控制的具体做法，论述了在施工过程中控制路面平整度和密实度的关键因素。     

主动横向稳定器降低商用车侧倾的研究

将新式主动横向稳定器安装在中型货画的前轴和后轴，通过液压缸与车架连接。本文研究了该稳定器对降低车身侧倾和提高舒适性的效果。仿真分析和实车试验表明，采用前轮转角前馈控制方法，汽车转向时，稳定器产生反侧倾力矩，大幅度地降低车身侧倾。