查询词典 power rail

This paper investigates the basic principle of land and real property appreciation along the line produced by urban rail transit, analyzes the action process of urban rail transit development benefit, and demonstrates the basic characteristics of vested benefit of urban rail transit by using overseas related research results for reference. On the basis, the influence circle of urban rail transit development benefit is studied, the primary model is created according to the consistence principle of trip access, and the development benefit influence circle of each station on Line 1 is caculated for trial. At the same time the development benefit influence circle of the Xin-Zhuang Station on Line 1 is analyzed according to the research data, which verifies the model results. In addition, further research problems are put forward.

本文从城市轨道交通引起轨道交通线路沿线区域内的土地和不动产增值的基本原理入手，分析城市轨道交通利益发生、扩散和转移的作用过程，借鉴国外学者的相关研究成果，阐明了城市轨道交通利益最终归属的基本特征；在此基础上，重点对城市轨道交通开发利益的影响范围进行研究，根据出行可达性一致的原则建立了城市轨道交通开发利益影响范围的初步计算模型，针对上海轨道交通1号线各车站的开发利益影响范围进行了试算；同时，根据实际调查数据对上海轨道交通1号线莘庄站的开发利益影响范围进行了对比分析，验证了模型计算结果；此外还提出了有待进一步深化研究的问题。

The computation model of two-point contact (for cone-tread) and conformal contact (for worn-tread) resulting from wheel flange close to rail is firstly established in this paper. A detailed analysis is made of the wheel/rail contact force, contact status and wheel/rail stress distribution on the different action of tractive forces and transverse forces. We draw some important conclusions, one of which is that the locomotive adhesion performance will decrease with the increase of transverse forces between wheel and rail.

本文建立了车轮轮缘贴靠钢轨形成的轮轨两点接触和共形接触的计算模型，对不同的牵引力矩、不同的横向力作用下的轮轨接触力、接触状态和轮轨应力分布进行了详细的分析，得出了轮轨间横向力增大会降低机车粘着性能等一系列重要结论。

The guard rail has many kinds of explanations, may be in the industry uses, uses in protecting the industrial equipment, the facility, these guard rails are very generally solid, the material request is also quite strict; We refer to generally the guard rail is the guard rail net, generally is the wire netting wall, yesterday I have gone to a Yantai some work site dewatering excavation scene, located at the inhabited area, the construction road section is mainly some large-scale freight vehicles and the resident passes through, although the project is the seal construction, only passes through for the pedestrian, also has displayed the project notice board in the work site east side, but nearby the deep two meter big hole pit several simple guard rails, between the guard rail only some warning line a little truly cannot only be justified.

提示： 您现在查看的是分类妈妈关于烟台护栏的信息，如果您不满意，请登录咨询建议留言，让我们共同打造港城新媒体！烟台分类妈妈消息，今天一尾号是9820的网民来电说想告诉大家一条关于烟台护栏的相关信息：护栏有多种解释，可以是工业上用的，用于保护工业设备、设施，这些护栏一般很结实，材料要求也比较严格；我们一般指的护栏是护栏网，一般为铁丝网墙，昨天我去了一趟烟台某工地的排水工程现场，位于居民区，施工的路段主要是一些大型货车和居民通行，虽然工程为封闭施工，仅供行人通行，也在工地的东侧摆上了工程公告牌，但深两米的大坑坑边仅有几个简易的护栏，护栏间仅有一根警戒线确实有点说不过去。以上就是这位热心的朋友为大家介绍的关于烟台市护栏的相关问题的相关信息，希望烟台市民能够满意加喜欢，以下是简单的英文介绍希望老外朋友们也喜欢

With the development arise some problems of the wheel/rail performance, the requirement of the train traction for the adhesion of wheel/rail will become more and more strict, and rail corrugation of wheel/rail, rolling contact fatigue and derailment will become more and more serious. The solution to the problems will have direct effects on the railway development.

当前世界铁路正朝着高速和重载的方向发展，随之而来的是列车牵引对轮轨粘着的要求越来越高，而轮轨的波浪形磨耗、滚动接触疲劳、脱轨等轮轨关系问题越来越严重，其解决与否直接影响到铁路的快速发展。

The development tendency of the railway construction in the world today is serving high speed trains and csirrying heavy load. With the development arise some problems of the wheel/rail performance, the requirement of the train traction for the adhesion of wheel/rail will become more and more strict, and rail corrugation of wheel/rail, rolling contact fatigue and derailment will become more and more serious. The solution to the problems will have direct effects on the railway development.

当前世界铁路正朝着高速和重载的方向发展，随之而来的是列车牵引对轮轨粘着的要求越来越高，而轮轨的波浪形磨耗、滚动接触疲劳、脱轨等轮轨关系问题越来越严重，其解决与否直接影响到铁路的快速发展。

When the rolling stock from the Road for A shares, B shares, mechanical manipulation Switch to track mobile location Tsim Sha Tsui, a sharp rail tracks of a basic paste, pointed out the basic two-track rail 2, and this opened the B-share Road, Road closure of the A-shares, locomotives and rolling stock into the link of the rail along the curve of the transition to lead Frog and their rail unit.

当机车车辆要从A股道转入B股道时，操纵转辙机械使尖轨移动位置，尖轨1密贴基本轨1，尖轨2脱离基本轨2，这样就开通了B股道，关闭了A股道，机车车辆进入连接部分沿着导曲线轨过渡到辙叉和护轨单元。

Railway hardware and equipments: all kinds of clip、washers、No.70 rail spike、fi shplate、 anti-loo sen nuts、rail anchor、rail brace、 track jack、torsional spanner, all kinds of screw spike、timber drive spike、rail bolt、fish bolt、type T bolts and other railway parts

国内外铁路及五金器材：各类型号弹条、弹垫、挡板、70型道钉、鱼尾板、防松螺母、防爬器、轨撑、起轨器、防松螺帽专用扭力扳手等器材，各类螺纹道钉、麻花道钉、轨道螺栓、鱼尾螺栓、T型螺栓、等铁路标准件。

Cross sector seamless line, namely rail bar, rail bar and rail switch direct welding; the vertical force and displacement are direct transmitted between rail bars.

跨区间无缝线路，即轨条与轨条、轨条与道岔直接焊接，轨条之间直接传递纵向力和位移。

Aiming at the engineering problem that K welding machine is used to weld PD3 60kg/m rail during welding production at present, the quality of the joint falls short of the standard of TB/T1632-91 because of the objection of grey-spots in the welding joint, this paper analyses the element which influence the welding joint quality in detail from the stability of flash of the accelerating step of the rail, finds out the relationship between the stability of flash-butt welding and the quality of rail joint, provides the measure for controlling the quality of rail welding and some gist for establishing perfect controlling system of welding joint quality

针对目前焊轨生产中采用K型焊机焊接PD3 60kg/m钢轨，接头灰斑缺陷多，性能难以达到部颁标准要求的工程问题，对材质、焊接电压、焊接工艺对接头质量的影响进行研究，并从钢轨焊接加速烧化阶段的闪光稳定性入手，详细分析了影响接头质量的因素，找出了钢轨闪光焊稳定性与质量的关系，提出了控制钢轨焊接质量的措施，为建立完善的焊接质量控制体系提供了依据。

The following exciting results are revealed: 1 When considering the influence of some nonlinear elements such as hard-limit of exciters, the effects of some devices such as Power System Stabilizer and Static Var Compensator which can introduce positive damping in power system, the reasonability of system parameter values in simulation, the SNB surface and HB surface on the boundary of SSSR will turn close to each other and even coalesce together; 2 Under some conditions, coupling between slow exciters and shunt capacitors will bring negative damping in power system dynamics, which increases the possibility of oscillatory instability. So the power system with mass shunt compensators is easily subjected to the oscillatory instability. In recent years, chaotic phenomena of power system have been reported many times. Some simulation studies even found chaos existing inside the power system SSSR. In this dissertation, chaotic phenomena in power systems are thoroughly studied in order to make clear the relation of chaos and SSSR. The following results are derived: 1 Based on Li-Yorke Theorem and their definition on the chaos, the existence of chaos in power system is verified; 2 Three possible routes of causing chaos in power system are found and deeply investigated. They are route of cascading period doubling, route of directly initial energizing and route of torus bifurcation (or quasi-periodicity). The latter two routes are investigated for the first time in power system stability studies; 3 When the stability conditions of chaos are broken, it is found they can lead to voltage collapse, angle divergence, or voltage collapse with angle divergence simultaneously.

针对在电力系统小扰动稳定区域内可能存在混沌吸引域的有关报道，本文深入研究了电力系统混沌现象的出现途径和与系统失稳模式之间的关系：1利用Li-Yorke定理和Li-Yorke的混沌定义，从理论上证明了电力系统混沌现象的存在性；2发现了电力系统中导致混沌出现的三种可能途径：倍周期分岔导致混沌、初始能量直接激发混沌和经由环面分岔导致混沌，并对后两种新发现的途径进行了较为细致的研究；3发现了混沌极限环破裂导致电压崩溃、角度失稳以及电压崩溃和角度失稳同时出现的现象，其中混沌极限环破裂导致系统角度失稳和电压崩溃及角度失稳同时出现的现象均属首次报道；4证明由微分-代数方程描述的系统模型，其小扰动稳定域的边界只包含HB、SNB和SIB三种分岔界面，在SSSR的内部和边界上，均不可能存在会导致混沌的点，从而将混沌现象排除在小扰动稳定域的研究之外，简化了后者的研究工作。

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。