架空输电线路课程设计

架空输电线路课程设计班级姓名学号指导老师年月日···································································································3···································································································3·····························································································4···································································································5·······································································6·····························································································8····································································9····························································································11·········································································14········································································································14V区二三1.气象条件及其作用00000000077707000000动件距距2.风速换算米vvhzh0vh；0；hvz6；；h150.1610z1.06710则3.导线参数7截面积弹性系温膨计算质量抗拉强安全许用应年均应mm2)径数系数断力）度p）cp）10^-64T123400451.550.950.95259.62MPajAp259.622.5103.85(MPa)p0kcp259.6264.90(MPa)p44四1.自重比载qgA15119.8066510310332.8210(/)m3451.5512.冰重比载b(db)27.72810327.72810323.1110(/)m3451.552A3.垂直总比载55.9310(3MPam/)3124.无冰风压比载WvAsin10(3m/)d24cf）1.01.01.1cfWvA10.672sin1.127.634.79(3m/)d233451.554cf1.00.751.1cfWvA2sin0.751.127.638.09(/)3md233451.554cf1.01.1c2计算强度时0.75WvAsin0.751.127.6332.33(/)3md2334cff451.55WvA20.61sin0.611.127.6326.29(3m/)d2334cff451.555.覆冰风压比载WvA(2)sin10(/)3mdb25cf1.01.2c1.0fWvA10.672(2)sin1.247.639.01(3m/)db233451.555cf6.无冰综合比载2216432.824.791033.1710(MPa/m)2233632.828.091033.8010(/)MPam2233632.8232.331046.0710(/)MPam22333632.8226.291042.0510(/)MPam22367.覆冰综合比载2237555.939.011056.6510(/)MPam22337数（10）MPa/m31.0/)46.0710333//)m33330。/bdac02.按等高悬点考虑，计算各临界档距coscosE2l23E2l23cosEttjijiij242400jij2i200jiEttlij00jiji2Ej3i00ji24Ecostt624106900020lm0bab690000.44360.316010226cos3Eab00ab24Ecostt61069000l虚数00caca6900010226cos3Eca00ac24Ecostt62410690005ldm00dada690000.54550.316010226cos3Ead00ad24Ecostt61069000l虚数00cbcb6900010226cos3Ecb00bc24Ecostt6241069000(l虚数00dbdb6900010226cos3Edb00bd24Ecostt1069000lm00dcdc690000.316010226cos3Edc00cd)l164.82mcd—1.临界温度法tb3b。水平应力为t1jjtt11bEjb32.判定）15C32.8210（MPa/m）t1164.9015C55.9310（MPa/m）t待求222cos3Ecos3E2l22l2cosEtt122424020121220201289934.74322294.3232.821094.33t15124.3Ct1b55.931019.31069000Ejb363C,tCtttmaxjj）5C56.6510（MPa/m）t11103.8515C55.9310（MPa/m）t1待求222cos3Ecos3E2l22l2cosEtt122242402012120201269.63359738.963222103.33232.8210103.333tt15127.1C1b55.931019.31069000Ejb363C,tCtttmaxjj1.各已知条件及参数如下表六所示mm0m32.8256.653m(MPa)m2.待求条件的已知参数如下表七所示最高最低年均事故外过外过内过安装覆冰覆冰覆冰最大最大有风无风电压气象无风有风有风风速风速（强（风（强（风度）偏）度）偏）15-50-5-5m000m000010.67010.6710.6732.0132.01m33.1732.8233.8033.1755.9356.6556.6546.0742.05(10/)MPam3m3.利用状态方程式求得各条件下的应力与弧垂，列于下表八中。8）5C56.6510（MPa/m）103.85t11140C32.8210（MPa/m）t，水平应力222cos3Ecos3E2l22l2cosEtt12242402012122020192.96495490.1043222令495490.10492.9650B0则上式变换为取2A222495490.104495490.10458.8757.4657.4157.1357.39125092.9658.8792.9622495490.104495490.1043457.1392.9657.4692.9622495490.104495490.10457.405657.3992.9657.4192.962257.40MPa2l32.821034002211.44mf857.40v01.51002f10010l2lff100100,C5CJElcos3Elcos22223cosEcosttEJ2424J202JJJ0coscostttcosE/costtEEttEJJJJJt铝钢截面比铝钢截面比铝钢截面比tC（）251.822399.737.71420C51.82C5C56.6510（MPa/m）t11103.85140C32.8210（MPa/m）t222EcoslcosE2232l23cosEttt122242402012120201代入数据得66.32495490.104322260B495490.1040则上式变换为取266.32A222495490.104495490.10462.6361.9962.11126066.3262.6366.3222495490.104495490.10462.143461.9966.3262.1466.3222495490.104