查询词典 rail track

Track vibration due to typical rail joint irregularities has been simu-lated and verified.The influence of rail pad stiffness on track vibration is analysed in detail.

计算了广深准高速条件下典型接头不平顺激励的轨道动力效应，分析了轨下垫板的刚度对轨道动力效应的影响规律。

We have studied the variational pattern of track geometrical form due to wheel/rail forces under the quasi-static for operating of rolling stock, and also have studied the actions on elastic displacements of constraint rail due to the thickness and stiffness of track pad.

由轮轨力所引起的线路几何形态的变化规律；在假定轮轨力不变的情况下，又研究了轨底垫层的厚度和刚度对于约束钢轨弹性位移所起的作用；为确定轮轴的弯曲变形对轮轨关系的影响，同时建立了轮对有限元模型，计算了轮对承载状态所发生的弹性变形。

Research conclusions:The analysis and comments are made on the requirements and the technical indexes of rail, sub - rail foundation, fittings and ballast bed for track structure of passenger dedicated railway line and high - speed railway in many countries, and the thinking is offered for development of the key track technologies

研究结论：对各国在高速铁路轨道结构、客运专线和高速铁路对轨道结构的要求、钢轨、轨下基础、扣件、道床等方面的技术指标做出分析和评述，并对一些关键技术的发展提出了思路。

The comparison to the interferential voltage in ballast track shows that the steel bar net of ballastless track enlarges the rail current proportion in traction current in certain degree, which raise the rail interferential voltage from the traction current slightly.

与有砟轨道的干扰电压进行对比分析的结果表明：无砟轨道钢筋网络在一定程度上增大了钢轨回流在牵引回流中的比例，使得牵引电流对轨道电路的干扰电压略有增大。

Since the signal equipments imported is unable to meet the development demand of urban rail transit, independent research of the domestic digital jointless track circuit is critical. Charateristic analysis for signal transmission of digital jointless track circuit was mainly studied in this thesis. Design digital jointless track circuit analysis software, which validated the transmission parameters could or not meet requirements of the normal, shunt and signaling states, was the key work of the research.

本文在我国引进的国外信号设备无法满足国内城市轨道交通发展的需求，并自主研发出国产化试验型数字轨道电路的背景下，对数字无绝缘轨道电路信号传输进行特性分析，并设计出数字无绝缘轨道电路分析软件，实现对特定的轨道电路传输参数验证其能否满足调整、分流和机车信号工作状态的要求。

In order to adapt this requirement, the new laying track must be rectified preventively and the online use rail must be grinded for removing inherent defect in track and surface unsmooth-going and fatigue damage layer of track.

为了适应这种提速的要求，必须对新铺设的钢轨进行预防性修磨处理，并对在线使用的钢轨必须进行修磨，从而消除钢轨中固有的缺陷、钢轨顶面的不平顺以及钢轨焊接头的不平顺和钢轨的疲劳破坏层。

Therefore, since the early 1960s, countries around the world have been carried out to the overall rail-bed, or curing alternative granular ballast of the various Ballastless track structure of the system, some countries have Ballastless track as the main high-speed railway Track structure of a comprehensive application.

因此，自上世纪六十年代初，世界各国铁路相继开展以整体式或固化道床替代散粒体道碴的各类无碴轨道结构的系统研究，一些国家已把无碴轨道作为高速铁路的主要轨道结构型式全面推广应用。

The main products include: hydraulic bending track machine, rail Shuang'gou bending machine, vertical bending track machine, Calibration machines, extrusion hole machine, from Road machine, reset machine, electric saw track machine, adjust gauge, and tub of plastic machines, ching car machine, alignment machine,machine, electro-hydraulic putt, pumping stations, such as hydraulic mining machinery and maintenance tools.

主要产品有：液压弯轨机、双沟弯轨机、垂直弯轨机、校正机、挤孔机、起道机、复位机、电动锯轨机，轨距调整器，矿车整形机，清车机、校直机、拨轮机，电动液压推杆，泵站等矿山液压机械及维护工具。

Analysis of dynamical simulation data shows as follows: Wheel tread LMA is able to satisfy the requirements of the 300 km/h~350 km/h high-speed wheel-rail technology, and wheel tread XP55 is able to reach 250 km/h~300 km/h; the main issue of Wheel tread LM is that the larger equivalent conicity may cause the bigger lateral wheel-rail force, and wheel tread S1002 has the severe problem of harmful wheel-rail wear.

动态仿真数据分析表明：LMA型车轮踏面可以满足300 km/h~350 km/h高速轮轨技术要求，而XP55型踏面则可以满足250 km/h~300 km/h速度的要求；LM型踏面的主要问题是等效锥度比较大，从而造成轮轨横向力也比较大，S1002型踏面对轮轨存在比较严重的有害磨耗问题。

In chapter one, a review for the trade of urban rail traffic is performed with respects to the developing histories and trend, mode, light rails, vehicle type and so on; In chapter two, a set of contradistinctive analyses between the domestic and the overseas are carried out at aspects of equipment, density of line net, build cost and so on. In chapter three, the competitive status among existing enterprises for urban rail vehicle and equipment manufacturing in our country is analyzed by Potter model; In chapter four, questions that should be paid attention to and strategies in course of our country's urban rail traffic building are provided mainly in terms of plan, cost, construction investment and operation, selection of system type, safety of building process and so on.

本文第一章主要从轨道交通的发展历史、模式、轻轨、车辆类型、发展趋势等方面对城市轨道交通行业的发展作了一个回顾；第二章主要是从设备、线网密度、建设成本等六个方面对国内外城市轨道交通进行了一个对比分析；第三章主要是利用波特模型对我国现有的城市轨道交通车辆设备生产企业之间的竞争状况进行了分析；第四章主要从规划、成本、建设投资和运营、系统类型选择、建设过程安全等方面提出了我国在城市轨道交通建设过程中应该注意的问题和对策。

The production moved off-Broadway to New York City, where she won the Joseph E. Calloway award for her performance, and was profiled in American Theater Magazine as one of ten young theater artists to watch.

生产提出过百老汇的新的纽约市，在那里她赢得了约瑟夫calloway奖，她的表现，并于异型在美国的战区杂志之一， 10战区的青年艺术家观赏。

It's a risk tradeoff, and I believe that adding test support code usually wins.

这是一个风险的权衡，我相信添加测试代码通常会占上风。