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变电
线路
结构
铁塔
基础
设计
工具
耐张杆荷载计算:g1D=3.1128E-02g1B=8.4009E-02L1=300Q11D=71.38Q12D=69.46LVD11=150LVD12=150g2D=1.1963E-02g2B=3.9243E-02L2=300Q21D=85Q22D=85LVD21=150LVD22=150g3D=4.3091E-02g3B=1.2325E-01h1=0Q31D=72.31Q32D=76.32LVD31=150LVD32=150g4Dvmax=2.8216E-02g4Bvmax=9.3546E-02h2=0Q41D=67.27Q42D=69.29LVD41=150LVD42=150g5d=7.4497E-03g5B=2.8254E-02S=15Q51D=67.27Q52D=69.29LVD51=150LVD52=150TD max=28332.20TBmax=14554.61PJD=120Q11B=255.91Q12B=254.9LVB11=150LVB12=150AD=333.31AB=49.46PJD=10Q21B=294Q22B=294LVB21=150LVB22=150GJD=440GJB=30Q31B=260.36Q32B=173.9LVB31=150LVB32=150GJD=520GJB=40Q41B=245.77Q42B=256.91LVB41=150LVB42=150GD附加=2000GB附加=1500Q51B=245.77Q52B=256.91LVB51=150LVB52=150说明:Q为各种相应条件下的导、地线应力,如Q11D表示正常情况I下一侧导线的应力,Q12D为另一侧 T1=Q1*AL1为耐张杆一侧之水平档距,PJ为金具水平受力,GJ为金具垂直受力 S/2S为线路转角度数,T1为耐张杆一侧导线之张力,T1为耐张杆一侧导线之张力横担 T2=Q2*A1306.521.正常情况I:最大风速、无冰、未断线荷载图:正常I4673.861)垂直荷载:G3992.63G1D=g1D*AD*LVD11+GJD=1996.32(N)49.539164.65G2D=g1D*AD*LVD12+GJD=1996.32(N)634.48G1B=g1B*AB*LVB11+GJB=653.26(N)3992.633992.63G2B=g1B*AB*LVB12+GJB=653.26(N)9164.659164.65634.48634.482)水平荷载:P(T取相应条件下的应力Q1乘以面积)P1D=g4D(0.vmax)*AD*L1/2*COS(S/2)+T1D*SIN(S/2)+PJD=4624.09(N)P2D=g4D(0.vmax)*AD*L2/2*COS(S/2)+T2D*SIN(S/2)+PJD=4540.56(N)P1B=g4B(0.vmax)*AB*L1/2*COS(S/2)+T1B*SIN(S/2)=2340.19(N)P2B=g4B(0.vmax)*AB*L2/2*COS(S/2)+T2B*SIN(S/2)=2333.67(N)3)纵向荷载:TTD=(T1D-T2D)*COS(S/2)=634.48(N)TB=(T1B-T2B)*COS(S/2)=49.53(N)2.正常情况II:覆冰、相应风速气温、未断线1)垂直荷载:GG1D=g3D*AD*LVD21+GJD=2674.40(N)荷载图:正常II1908.80G2D=g3D*AD*LVD22+GJD=2674.40(N)G1B=g3B*AB*LVB21+GJB=954.40(N)4211.67G2B=g3B*AB*LVB22+GJB=954.40(N)5348.802)水平荷载:P(T取相应条件下的应力Q2乘以面积)0.00P1D=g5D(b.10)*AD*L1/2+T1D*SIN(S/2)+PJD=4077.25(N)5348.808154.51P2D=g5D(b.10)*AD*L2/2+T2D*SIN(S/2)+PJD=4077.25(N)0.005348.80P1B=g5B(b.10)*AB*L1/2+T1B*SIN(S/2)=2105.84(N)8154.518154.51P2B=g5B(b.10)*AB*L2/2+T2B*SIN(S/2)=2105.84(N)0.000.003)纵向荷载:TTD=(T1D-T2D)*COS(S/2)=0.00(N)TB=(T1B-T2B)*COS(S/2)=0.00(N)3.正常情况III:最低气温、无冰、无风、未断线1)垂直荷载:GG1D=g1D*AD*LVD31+GJD=1996.32(N)G2D=g1D*AD*LVD32+GJD=1996.32(N)1306.52G1B=g1B*AB*LVB31+GJB=653.26(N)荷载图:正常IIIG2B=g1B*AB*LVB32+GJB=653.26(N)4239.732803.512)水平荷载:P(T取相应条件下的应力Q3乘以面积)3992.63P1D=T1D*SIN(S/2)=3145.90(N)6466.25P2D=T2D*SIN(S/2)=3320.35(N)-1325.14P1B=T1B*SIN(S/2)=1680.84(N)3992.633992.63P2B=T2B*SIN(S/2)=1122.67(N)6466.256466.253)纵向荷载:T)-1325.14-1325.14TD=(T1D-T2D)*COS(S/2)=-1325.14(N)TB=(T1B-T2B)*COS(S/2)=4239.73(N)4.断线情况I:同一档内断任意两相导线、地线未断、无冰、无风1306.521)垂直荷载:G荷载图:断线I正常相及断线相的未断线侧:3039.61G1D=g1D*AD*LVD41+GJD=1996.32(N)4516.32G2D=g1D*AD*LVD42+GJD=1996.32(N)2588.67G1B=g1B*AB*LVB41+GJB=653.26(N)19662.87G2B=g1B*AB*LVB42+GJB=653.26(N)3992.634516.32断线相:5177.332588.67GD=GJD+GD附加=2520(N)19662.872)水平荷载:P(T取相应条件下的应力Q4乘以面积)P1D=0.7*TDmax*SIN(S/2)=2588.67(N)P2D=P1D=2588.67(N)P1B=0.8*TBmax*SIN(S/2)=1519.81P2B=P1B=1519.81(N)3)纵向荷载:TTD=0.7*TDmax*COS(S/2)=19662.87(N)5.断线情况II:断任意一根地线、导线未断、无冰、无风1)垂直荷载:G正常相及断线相的未断线侧:荷载图:断线II 2183.26G1D=g1D*AD*LVD51+GJD=1996.32(N)G2D=g1D*AD*LVD52+GJD=1996.32(N)1519.81G1B=g1B*AB*LVB51+GJB=653.26(N)11544.08G2B=g1B*AB*LVB52+GJB=653.26(N)5177.33断线相:GB=GJB+GB附加=1530(N)3992.632)水平荷载:P(T取相应条件下的应力Q5乘以面积)P1D=0.7*TDmax*SIN(S/2)=2588.67(N)5177.335177.33P2D=P1D=2588.67(N)3992.633992.63P1B=0.8*TBmax*SIN(S/2)=1519.81(N)P2B=P1B=1519.81(N)3)纵向荷载:TTB=0.8*TBmax*COS(S/2)=11544.08(N)一、比载计算导线型号:LGJ-300/25G0D=1058TD=83410a1=1导线安全系数KD=2.944AD=333.31USCD=1.1a2=1最大风速Vmax=25dD=23.76uzD=1.11a3=0.85地线型号:GJ-50G0B=423.7TB=58233V1=10地线安全系数KB=4.001AB=49.46USCB=1.2V2=15覆冰厚度b=5dB=9uzB=1.15杆塔呼高=18G0D为导线单位质量,单位为Kg/Km;AD为导线截面积,单位mm2;b为覆冰厚度,单位mm;Td为计算拉断力,单位为N;KD为安全系数;dD为导线外径,单位mm;V为风速,单位为m/s;uZD为风压高度变化系数;a为风压(速)不均匀系数,V20m/s时a为1.0,20V30时a为0.85,30V35时a为0.75,V35时a为0.7UscD为电线风载体型系数,当电线覆冰(不论线径大小)或电线直径17mm时,USCD为1.2;当电线直径17mm时,USCD为1.1g1=9.80665*G0D/AD*10-3g2=9.80665*0.9*3.1415926*b(b+dD)/AD*10-3g3=g1+g2g4=9.80665/16*a*USCD*UZD*dD*V2/AD*10-3g5=9.80665/16*a*USCD*UZD*(dD+2b)*V2/AD*10-3g6=(g12+g42)0.5g7=(g32+g52)0.5 导线:地线:1.自重比载g1 1.自重比载g1 g1(0.0)=3.11285E-02(MPa/m)g1(0.0)=8.40088E-02(MPa/m)2.冰层比载g22.冰层比载g2 g2(b.0)=1.19625E-02(MPa/m)g2(b.0)=3.92425E-02(MPa/m)3.垂直总比载g33.垂直总比载g3 g3(b.0)=4.30910E-02(MPa/m)g3(b.0)=1.23251E-01(MPa/m)4.风压比载g44.风压比载g4 1)外过电压、安装有风 1)外过电压、安装有风 g4(0.v1)=5.31133E-03(MPa/m)g4(0.v1)=1.53453E-02(MPa/m)2)内过电压 2)内过电压 g4(0.v2)=1.19505E-02(MPa/m)g4(0.v2)=3.45268E-02(MPa/m)3)最大风速 3)最大风速 g4(0.Vmax)=2.82165E-02(MPa/m)g4(0.Vmax)=8.15217E-02(MPa/m)5.覆冰风压比载g55.覆冰风压比载g5 g5(b.10)=7.44965E-03(MPa/m)g5(b.10)=2.82541E-02(MPa/m)6.无冰有风综合比载g66.无冰有风综合比载g6 g6(0.v1)=3.15784E-02(MPa/m)g6(0.v1)=8.53988E-02(MPa/m)g6(0.v2)=3.33436E-02(MPa/m)g6(0.v2)=9.08272E-02(MPa/m)g6(0.vmax)=4.20137E-02(MPa/m)g6(0.vmax)=1.17061E-01(MPa/m)7.覆冰综合比载g77.覆冰综合比载g7 g7(b.10)=4.37302E-02(MPa/m)g7(b.10)=1.26448E-01(MPa/m)三、气象条件工况正常情况安装情况断线情况名称最大风速最大覆冰最低气温外过电压内过电压断导线断地线温度()15-5-101515000冰厚(mm)05000000风速(m/sec)2510010151000四、塔身风荷载(算基础用)杆塔名称呼高(m)塔全高(m)正面根开A 侧面根开B电压等级风载调整系数风 速转 角7718-1818.026.54.04.0351.0025.0015.000 参数作用点高度(m)高度变化系 数b/h(桁架前后面宽/桁架迎风面宽)填充系数风载体型系 数杆件轮廓面积(m2)水平力(kN)是否横担(Y或N)角度0度25.31.1821.00.352.056.602.191N18.81.0751.00.202.418.211.658N13.30.9621.00.202.4119.253.480N4.50.6801.00.202.41