接触网的平面设计

I摘要接触网是电气化铁路的重要供电设备。接触网的设计是电气化铁路设计的重要组成部分。接触网平面设计的成果主要以平面布置图和安装图的形式体现。而安装图可选用铁道部通用图，针对各种线路情况，仅需进行少量的补充，因此，接触网平面设计就成为接触网设计的主要内容。由于各个区间、隧道、车站等线路条件是千变万化的，我们无法用固定、简单的格式来完成接触网的平面设计，因此必须对每个区间、隧道、车站单独进行平面设计。本设计从接触网设计的特点出发，结合施工组织方式与勘测设计CAD一体化发展趋势，分5章对接触网平面CAD技术实现方法进行详细介绍。第一章简要介绍了接触网的概念；第二章，介绍接触网的平面设计；第三章介绍CAD软件的应用；第四章以代表性区间为例，详细阐述了在WindowsXP系统中接触网平面CAD技术的实现方法；最后一章是对接触网平面CAD技术实现方法的总结，并对其发展趋势进行了展望。关键词：区间接触网平面设计IIAbstructOverheadCatenarySystem(abbr.OCS)isvitaltomaintainnormalrunningofElectrifiedRailway.ThegrophicdesignofOCSisoneoftheimportantpartsofElectrifiedRailwaydesign.TheproductionofOCSdesignismainlyinformsofplanandassemblingdrawing.Astoassemblingdrawing,wecanrefertothestandardassemblingdrawingsissuedbyMinistryofRailway,andonlyfewchangesshouldbemadetosatisfieddifferentlineconditions.Therefore,thisplanbecomesprimarypartofOCSdesign.Foreachinterval,tunnelandstationhavedifferentsituations.It'simpossibletofinishtheplanofOCSwithsimpleandformulate.So,withtraditiondesignmethod,designersshouldspendplentyoftimeandvigortofinishthedesignofOCS.BasedonthechacteristicsofthegrophicdesignofOCS,combinedwithdevelopmenttrendsofOCSCADSystemandtherichexperienceoftheauthor,thepapergivesathoroughpresentationofthedesignmethodofOCSCADSysteminfivedifferentchapters:Chapter1givesabriefintroductionoftheconseptofOCS.Chapter2introducesgraphicdesignofOCS.Chapter3expoundstheuseofCADsoftware.Chapter4,takingrepresentativeintervalasanexample,givesadetailedexplainationofthetechnologyofOCSCADSystemanditsapplicationonWindowsXPplatform.AndthelastchaptersummarizesthetechnologyofOCSCADSystemandanalyzesitsapplicationinthefuture.Keywords:Interval,OverheadCatenarySystem,GrophicDesign1目录1.绪论.....................................................................................................................11.1电气化铁道的历史....................................................................................11.2牵引供电....................................................................................................21.2.1简述.........................................................................................................21.2.2牵引网与接触网.....................................................................................21.3设计思路、目的、意义............................................................................21.3.1设计思路.................................................................................................21.3.2设计依据.................................................................................................31.3.3设计目的及意义.....................................................................................32.接触网平面设计.................................................................................................42.1原始资料的准备........................................................................................42.2接触网平面设计的技术原则....................................................................42.3基本设计....................................................................................................62.4确定计算气象条件....................................................................................82.4.1气象条件的内容及用途.........................................................................92.4.2确定气象条件.......................................................................................102.5负载的计算..............................................................................................142.5.1线索自重负荷.......................................................................................142.5.2覆冰负载...............................................................................................152.5.3风负载...................................................................................................152.5.4合成负载...............................................................................................162.6安装曲线计算..........................................................................................172.7跨距和锚段长度的计算..........................................................................262.7.1接触线的受风偏移和最大跨距...........................................................262.7.2区间锚段长度的划分...........................................................................273.计算机辅助设计...............................................................................................303.1计算机辅助设计（CAD）.....................................................................303.1.1CAD技术的基本功能..........................................................................303.1.2CAD技术的软、硬件系统..................................................................3123.1.3计算机辅助设计的过程.......................................................................313.1.4现代CAD技术的发展动向................................................................323.2接触网CAD软件的设计及组成...........................................................323.3AutoLISP设计思路拓展.......................................................................333.4CAD技术在区间接触网平面设计中的应用........................................344.区间接触网平面图的机辅设计...........................................