毕业设计[论文]题目:220kv双回路新型钢管塔设计学院:电气与信息工程学院专业:电气工程及其自动化姓名:学号:指导老师:完成时间:河南城建学院本科毕业设计(论文)摘要I摘要随着我国国民经济的持续发展,城市用电量每年递增,城市用电负荷逐步增大,高压输电线路进入城市已成为发展趋势。因此,在城市建设的220kV高压输电线路将越来越多。由于电缆线路造价昂贵,我国目前还不能普遍采用,所以必然以架空线路为主,钢管杆具有结构简单、强度高、造型美观、加工周期短、占地面积少、运输和安装方便省时等优点,适用于多回路不同电压等级同杆架设,与现代化城市发展相协调,被广泛应用于10~220kV输电线路的建设。根据架空线路导线截面大,多种电压,多回路共杆,造价低的特点。与传统的钢筋混凝土电杆、角钢塔相比可以知道钢管杆具施工维护方便、强度高,为安全运行提供了有力保证;并且也可以设计较高的铁塔,以满足跨越人行道、树木的要求;易实现多回路,从而大大减少城市走廊的拥挤程度;不用打拉线,占地面积小,减少占用城市走廊;钢管塔可以实现全镀锌,防锈性能大大提高同时也使钢管杆造型美观,与周围环境比较协调的优点,本着重介绍设计220kv双回路新型钢管塔设计。关键词:高压输电线,角钢塔,电力塔,双回路,架空线路河南城建学院本科毕业设计(论文)AbstractIIABSTRACTAlongwithourcountrysustainabledevelopmentofnationaleconomy,thecityelectricityconsumptionincreasingeachyear,thecitypowerloadincreasing,highvoltagetransmissionlineintothecityhasbecomeadevelopmenttrend.Therefore,intheurbanconstructionof220kvhighvoltagetransmissionlinewillbemoreandmore.Duetocablelineconstructioncostisexpensive,itisnotwidelyusedinourcountry,soitisgiveprioritytowithoverheadline,steelrodhastheadvantagesofsimplestructure,highstrength,beautifulappearance,processingcycleisshort,coveranareaofless,easytotransportandinstalltimeetc,andissuitableformultiloopwithdifferentvoltagegradestemerect,inharmonywiththemodernurbandevelopment,arewidelyusedintheconstructionof10~220kvpowertransmissionlines.Accordingtooverheadlineconductorcrosssection,avarietyofvoltage,multilooppole,thecharacteristicsoflowcost.Comparedwiththetraditionalreinforcedconcretepole,Anglesteeltowercanknowconvenientmaintenance,highstrengthsteeltubepolewithconstruction,providesapowerfulguaranteethesafeoperation;CandesignhighEiffelTower,inordertomeettherequirementsofacrossthepavement,trees;Easytorealizemultiloop,thusgreatlyreducethecongestionofurbancorridor;Withoutacord,coveranareaofanareasmall,lessoccupyurbancorridors;Galvanizedsteelpipecolumncanachievefull,usesteeltubepolecoversanareaofless,aestheticallypleasing,comparedwiththesurroundingenvironmentcoordination,theadvantagesofthisdesigninstroducesThenew220kvdoubiecircuitsteeltowerdesign.Keywords:highvoltagetransmissionline,Anglesteeltowers,powertower,thedoublecircuit,overheadlineconductor河南城建学院本科毕业设计(论文)目录III目录摘要................................................................IABSTRACT........................................................II1引言..............................................................12架空线路的基本知识及其选用原则....................................22.1架空线路的基本知识..........................................22.1.1架空线路...............................................22.1.2架空线路的敷设.........................................32.2输电线路各个参数的确定......................................42.2.1输电线路设计的耐张段如何确定...........................42.2.2关于分裂导线的知识.....................................42.2.3导线的选择原则.........................................52.3导线的型号确定..............................................113主杆设计.........................................................143.1杆塔分类....................................................143.2各杆塔特点..................................................153.2.1钢筋混凝土电杆........................................153.2.2普通铁塔..............................................173.2.3钢管杆................................................193.3杆塔各部分设计..............................................194横担设计.........................................................244.1横担类型....................................................244.2横担情况....................................................244.2.1荷载情况..............................................244.2.2截面强度计算..........................................244.2.3横担根部断面内力......................................254.2.4总体强度计算..........................................264.3挠度允许挠度值及计算........................................265基础设计.........................................................305.1基础主要类型................................................305.2地脚螺栓选用................................................305.3地脚螺栓定位................................................305.4基础设计....................................................316相关配件的设计...................................................336.1应引起注意的一些其他设计问题...............................336.2转角杆横担设计.............................................336.3挂线板设计.................................................336.4特殊爬梯设计...............................................33结论...............................................................34参考文献...........................................................35致谢...............................................................36附录...............................................................37河南城建学院本科毕业设计(论文)1引言11引言随着我国社会经济的高速发展,城市用电负荷逐步增大,高压输电线路进入城市已成为发展趋势。钢管杆具有结构简单、强度高、造型美观、加工周期短、占地面积少、运输和安装方便省时等优点,适用于多回路不同电压等级同杆架设,与现代化城市发展相协调,被广泛应用于10~220kV输电线路的建设。钢管杆用于220kV及以下各种电压等级的线路中,用以替代传统的角钢铁塔、混凝土水泥杆。它整体造型新颖、美观大方,集输电与美化环境于一体,具有强度高、占地省、造型美、安装快捷等特点。由于我国的钢管杆设计、使用都比较晚,还须加大开发的力度。在近年钢管杆的设计与使用中,会有几点体会:钢管杆的变形:钢管杆的受力特点与一般的自立式铁塔不同,它是通过钢管杆杆身的偏心弯矩将上部荷载传到基础,而且钢管杆底部的外径比铁塔的根开小得多因此钢管杆具有较大的柔度。在最新发布的《架空送电线路钢管杆设计技术规定》(DL/T5130-2001)中,对钢管杆的变形限制比自立式铁塔宽松得多。在荷载的长期效应组合作用下,直线型自立式铁塔的计算挠度为