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On one hand, land owners and house developers get the external benefit by paying nothing; on the other hand, urban rail transit enterprises should face the shortage of the construction fund, and always has to run at a loss because of affording great amount of construction expenses and operation cost.; This paper has introduced the relation between urban rail transit and urban land utilization, stated the external effect of the rail transportation, and qualitatively analyzed the influence brought to the urban form, social economy and environment.

一方面土地所有者和住宅开发者等不需要付出任何代价就可以得到轨道交通外部效益；另一方面轨道交通建设面临资金短缺问题，轨道交通企业往往也会因负担高额的建设费用与运营成本而导致企业亏本。；因此，实现城市轨道交通与土地利用一体化研究是具有十分重要的现实意义。

Side wear of rail on curves is a normal phenomenon in railway engineering. A great quantity of rail wear results in decreasing rail life in use and increasing railway transportation costs.

钢轨侧面磨耗是工务工程中普遍存在的问题，大量的钢轨磨耗缩短了钢轨的使用寿命，增加了铁路运营成本。

Yangtze River Delta, inter-city railway companies李庆鸿preparatory group on the 19th in the "Third China Urban Rail Transit Summit" and disclosed that in March 2005, the State Council executive meeting examined and approved in principle "Ring Beijing-Tianjin-Hebei Bohai Sea region, the Yangtze River Delta, the Pearl River Delta region inter-city rail transit network planning "(2005-2020), as a symbol of the Yangtze River Delta inter-city rail transit construction started.

长江三角洲城际铁路公司筹备组李庆鸿19日在"第三次中国城市轨道交通首脑会议"，并透露，在2005年3月，国务院常务会议审议并原则上批准了"环京津冀环渤海地区，长江三角洲，珠江三角洲地区城际轨道交通网规划"（ 2005-2020年），作为一个象征，长江三角洲城际轨道交通动工。

Continuity safety electricity rail, Never power-off, As has not oxygen copper transmit power supply, Press fall small, Conductivity doubly; And fitting is used for curve and discretion walk 's design, At automatizes in natal ranks, Absolute is power supply system best choice. W type safety electricity rail that be high ampere electricity rail, Quality is GLOBE STAR the most basic request.

连续性安全电轨，永不断电，以无氧铜输送电源，压降小，导电率倍加；且适用于曲线及高低行走的设计，在自动化生产的行列中，绝对是供电系统最佳的选择。W型安全电轨即高安培电轨，品质是GLOBE STAR最基本的要求。

By running the program based on vehicle-rail coupling dynamics, compute the dynamic response of elastic sleeper ballasted rail and common sleeper ballasted rail under same working condition.

利用车辆-轨道耦合动力学理论所编制的程序，计算弹性轨枕有碴轨道与普通轨枕有碴轨道在相同工况下的动力响应。

Based on Remington's wheel-rail noise prediction model and the analysis of vibration property of wheel-rail system, considering rail as moving linear radiator of sound and wheel as moving point radiator of sound, the wayside rolling noise of ballasted track is predicted.

利用Remington的轮轨噪声分析模型，结合我国车轮和钢轨的振动特性，将钢轨视为移动线声源，车轮视为移动点声源，对有碴轨道路旁辐射的滚动噪声进行预测。

In the big environment of borderline science develops rapidly, the boundary of management, project, design, engineering and maintenance is fuzzier. Integrated system is seeking for system optimization and extrudes the port problems between subsystems. I hope RAIL TRANSIT can pay attention to port problem and extruders features. I wish RAIL TRANSIT can occupy proper position in domestic rail transit industry and have great influence in this field.

在当今边缘学科快速发展的大环境下，管理、方案、设计、工程、维护的界限更加模糊，综合系统结成追求系统最优化，使各子系统间的接口问题更加突出，希望《轨道交通》杂志关注系统接口问题，使杂志特点更加突出，在国内轨道交通行业占有应有的地位，更具影响力。

Based on the study achievements of some predecessors,bridge,pier and abutment were simulated by solid element,rail and sleeper were simulated by space beam element,the links of rail,sleeper,bridge,pier and abutment were simulated by spring element,a three-dimensional finite element spatial mechanics model for calculating the rupture force between continuously welded rail and high-speed railway bridge was established.

在吸收前人研究成果的基础上，采用实体单元模拟桥梁及桥梁墩台，采用空间梁单元模拟钢轨及轨枕，采用弹簧单元模拟钢轨、轨枕、桥梁与墩台之间的连接，建立了断轨三维有限元空间力学模型。

In the context of rapid rail development, it's an important strategic action of Shanghai rail transit to carry out "The Main Strategy of Vitalizing the City through Science and Education", and to rely on scientific and technical innovation for accelerating rail network construction.

在城市轨道交通进入快速发展时期的背景下，深入贯彻落实&科教兴市主战略&，依托科技创新加速推进网络建设，是上海城市轨道交通发展的一个重要战略举措。

Focusing on severe wheel flange/rail side wear and a series of derailments of tramway vehicles with independently rotating wheels, an investigation has been carried out by comparison against solid wheelsets. Based on MATLAB/SIMULINK and a self-developed simulation model considering the IRWs, derailments have been simulated with results of possible causes of such derailments. Efforts have been made to fulfill comprehensive treatment of controllable factors such as the wheel profile, lubrication, clearance between check rail and high rail etc.

针对目前具有独立轮转向架的低地板面轻轨列车所发生的脱轨问题和轮缘严重磨耗间题，从轮轨系统的基本关系出发，分析了传统刚性轮对与独立轮对的导向机理和特点，建立了具有独立轮特点的计算机仿真模型，采用MATLAB/SIMULINK仿真工具计算模拟了实际脱轨现象，并对各种可能导致脱轨和轮缘磨耗的因素进行了分析。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。