架空线路课程设计(完整版)

题目：某110KV线路，通过我国气象区，导线型号为LGJ-150/20,做出相关的应力弧垂曲线。一查出气象资料和导线参数1、整理气象区的计算用气象条件，示于表1-1中表1-1 计算用气象条件项目 气象最高气温最低气温最大风速覆冰年平均气温气温（）40-1010-515风速(m/s)0030100冰厚（mm)000502、 LGJ150/20型导线的有关参数，汇集于表1-2中表1-2 LGJ-150/20导线有关参数截面积A（mm）导线直径d(mm)弹性系数E（Mpa)膨胀系数（1/）计算拉断力（N)计算质量（kg/km)抗拉强度p（Mpa）安全系数k164.516.677300019.610-646630549.4269.292.5二计算步骤 1、计算架空线路比载名称符号计算公式结果自重比载1（0，0）32.7510-3冰重比载2（5，0）18.2610-3垂直总比载3（5，0）51.0110-3无冰风压比载4（0，30）51.310-3覆冰风压比载5（5，10）12.1610-3无冰综合比载6（0，30）60.8610-3覆冰综合比载7（5，10）52.4410-3 计算架空线路比载（MPa/m）自重比载冰重比载垂直总比载无冰风压比载覆冰风压比载 无冰综合比载覆冰综合比载 2、确定应力值 许用应力0=40%p=107.72 年均应力上限cp=25%p=67.323、 确定临界档距，判定控制气象条件项目 条件最大风速最厚覆冰最低气温年均气温许用应力0(Mpa)107.72107.72107.7267.32比载（Mpa/m)60.8610-352.4410-332.7510-332.7510-3/0(1/m)0.56510-30.48710-30.30410-30.48610-3温度t()10-5-1015/0由大到小编号ABDC 4、计算临界档距当许用应力相等时，代入公式当许用应力不相等时，代入公式：逻辑图如下：A B C C292.86 1995.42 127.56 362.83 203.68D当L362.83时，A为控制气象条件（即最大风速）4、 计算各气象条件的应力状态方程：（1） 最高气温 L=50 2=32.7510-3 1=32.7510-3 01=67.32 t2=40 t1=15 L=100 2=32.7510-3 1=32.7510-3 01=67.32 t2=40 t1=15 L=150 2=32.7510-3 1=32.7510-3 01=67.32 t2=40 t1=15 L=200 2=32.7510-3 1=32.7510-3 01=67.32 t2=40 t1=15 L=250 2=32.7510-3 1=32.7510-3 01=67.32 t2=40 t1=15 L=300 2=32.7510-3 1=32.7510-3 01=67.32 t2=40 t1=15 L=350 2=32.7510-3 1=32.7510-3 01=67.32 t2=40 t1=15 L=362.83 2=32.7510-3 1=32.7510-3 01=67.32 t2=40 t1=15 L=400 2=32.7510-3 1=60.8310-3 01=107.72 t2=40 t1=10 L=450 2=32.7510-3 1=60.8310-3 01=107.72 t2=40 t1=10 L=500 2=32.7510-3 1=60.8310-3 01=107.72 t2=40 t1=10 L=550 2=32.7510-3 1=60.8310-3 01=107.72 t2=40 t1=10 L=600 2=32.7510-3 1=60.8310-3 01=107.72 t2=40 t1=10 (2)最低气温L=50 2=32.7510-3 1=32.7510-3 01=67.32 t2=-10 t1=15L=100 2=32.7510-3 1=32.7510-3 01=67.32 t2=-10 t1=15L=150 2=32.7510-3 1=32.7510-3 01=67.32 t2=-10 t1=15L=200 2=32.7510-3 1=32.7510-3 01=67.32 t2=-10 t1=15L=250 2=32.7510-3 1=32.7510-3 01=67.32 t2=-10 t1=15 L=300 2=32.7510-3 1=32.7510-3 01=67.32 t2=-10 t1=15 L=350 2=32.7510-3 1=32.7510-3 01=67.32 t2=-10 t1=15 L=362.83 2=32.7510-3 1=32.7510-3 01=67.32 t2=-10 t1=15 L=400 2=32.7510-3 1=60.8610-3 01=107.72 t2=-10 t1=10 L=450 2=32.7510-3 1=32.7510-3 01=107.72 t2=-10 t1=10 L=500 2=32.7510-3 1=32.7510-3 01=107.72 t2=-10 t1=10 L=550 2=32.7510-3 1=32.7510-3 01=107.72 t2=-10 t1=10 L=600 2=32.7510-3 1=32.7510-3 01=107.72 t2=-10 t1=10(3)最大风速L=50 2=60.8610-3 1=32.7510-3 01=67.32 t2=10 t1=15 L=100 2=60.8610-3 1=32.7510-3 01=67.32 t2=10 t1=15 L=150 2=60.8610-3 1=32.7510-3 01=67.32 t2=10 t1=15 L=200 2=60.8610-3 1=32.7510-3 01=67.32 t2=10 t1=15 L=250 2=60.8610-3 1=32.7510-3 01=67.32 t2=10 t1=15 L=300 2=60.8610-3 1=32.7510-3 01=67.32 t2=10 t1=15 L=350 2=60.8610-3 1=32.7510-3 01=67.32 t2=10 t1=15 L=362.83 2=60.8610-3 1=60.8610-3 01=107.72 t2=10 t1=10 L=400 2=60.8610-3 1=60.8610-3 01=107.72 t2=10 t1=10 L=450 2=60.8610-3 1=60.8610-3 01=107.72 t2=10 t1=10 L=500 2=60.8610-3 1=60.8610-3 01=107.72 t2=10 t1=10 L=550 2=60.8610-3 1=60.8610-3 01=107.72 t2=10 t1=10 L=600 2=60.8610-3 1=60.8610-3 01=107.72 t2=10 t1=10(4）覆冰L=50 2=52.4410-3 1=32.7510-3 01=67.32 t2=-5 t1=15 L=100 2=52.4410-3 1=32.7510-3 01=67.32 t2=-5 t1=15 L=150 2=52.4410-3 1=32.7510-3 01=67.32 t2=-5 t1=15 L=200 2=52.4410-3 1=32.7510-3 01=67.32 t2=-5 t1=15 L=250 2=52.4410-3 1=32.7510-3 01=67.32 t2=-5 t1=15L=300 2=52.4410-3 1=32.7510-3 01=67.32 t2=-5 t1=15 L=350 2=52.4410-3 1=32.7510-3 01=67.32 t2=-5 t1=15 L=362.83 2=52.4410-3 1=32.7510-3 01=67.32 t2=-5 t1=15 L=400 2=52.4410-3 1=60.8610-3 01=107.72 t2=-5 t1=10 L=450 2=52.4410-3 1=60.8610-3 01=107.72 t2=-5 t1=10L=500 2=52.4410-3 1=60.8610-3 01=107.72 t2=-5 t1=10 L=550 2=52.4410-3 1=60.8610-3 01=107.72 t2=-5 t1=10 L=600 2=52.4410-3 1=60.8610-3 01=107.72 t2=-5 t1=10(5)年均气温L=50 2=32.7510-3 1=32.7510-3 01=67.32 t2=15 t1=15 L=100 2=32.7510-3 1=32.7510-3 01=67.32 t2=15 t1=15 L=150 2=32.7510-3 1=32.7510-3 01=67.32 t2=15 t1=15 L=200 2=32.7510-3 1=32.7510-3 01=67.32 t2=15 t1=15 L=250 2=32.7510-3 1=32.7510-3 01=67.32 t2=15 t1=15 L=300 2=32.7510-3 1=32.7510-3 01=67.32 t2=15 t1=15 L=350 2=32.7510-3 1=32.7510-3 01=67.32 t2=15 t1=15 L=326.83 2=32.7510-3 1=32.7510-3 01=67.32 t2=15 t1=15 L=400 2=32.7510-3 1=60.8610-3 01=107.72 t2=15 t1=10 L=450 2=32.7510-3 1=60.8610-3 01=107.72 t2=15 t1=10 L=500 2=32.7510-3 1=60.8610-3 01=107.72 t2=15 t1=10 L=550 2=32.7510-3 1=60.8610-3 01=107.72 t2=15 t1=10 L=600 2=32.7510-3 1=60.8610-3 01=107.72 t2=15 t1=105、计算最高温度下的弧垂弧垂的计算公式： （1=32.7510-3 ）L=50 0=36.03 L=100 0=42.45 L=150 0=47.66 L=200 0=51.66 L=250 0=54.70 L=300 0=57.03 L=350 0=58.83 L=362.83 0=59.23 L=400 0=59.07 450 0=58.86 L=500 0=58.71 L=550 0=58.59 L=600 0=58.50 四、作出档距与应力和弧垂的关系汇总至表4-1 LGJ-150/20型导线应力弧垂计算表最低气温年均气温最大风速覆冰最高气温档距（m)应力(MPa)应力(MPa)应力(MPa)应力(MPa)应力(MPa)弧垂f(m)50102.0767.3277.3896.3936.030.28410099.2167.3283.4597.5342.450.96415095.0267.3289.7598.9647.661.93220090.3067.3295.30100.3651.663.17025085.8067.3299.96101.5954.704.67730081.9967.32103.80102.6357.036.46035078.9867.32106.95103.4758.838.524362.8378.3367.32107.66103.6659.239.10040074.6565.80107.720102.1359.0711.08945070.9564.20107.72100.4558.8614.08350068.3263.04107.7299.1558.7117.43355066.4162.17107.7298.1558.5921.13660064.9861.50107.7297.3658.5025.194 图像（详见附录一）五、作-1040的安装曲线1、计算各温度下的应力和弧垂 应用状态方程求解各施工气象（无风、无冰、不同气温）下的安装应力，进而求得相应的弧垂，根据其应力绘制百米档距弧垂，结果如表5-1已知条件年均气温最大风控制区间0-362.83362.83-+温度t1()1510比载1（10-3)32.7560.86许用应力01(Mpa) 67.32107.72待求条件温度t2()-10010203040比载2（10-3)32.7532.7532.7532.7532.7532.75（1），01=67.32，1=32.7510-3 ，t1=-10 ， 2=32.7510-3 以L=50为例，t=-10，解得02=102.07， t=0，解得02=88.03 ， t=10，解得02=74.158， t=20，解得02=60.5887， t=30，解得02=47.647， t=40，解得02=36.03， （2），01=51.08，1=60,8610-3 ，t1=10 ，2=32.7510-3 以L=400为例 t=-10，解02=74.65 ，t=0，解得02=70.842 ，t=10，得02=67.4067 ，t=20，得02=64.334 ，t=30，得02=61.576 ， t=40，解得02=59.070 ，表5-1 各种施工气温下的应力和百米档距弧垂温度（）-10010档距（m）应力(MPa)弧垂-10f100(m)应力(MPa)弧垂0f100(m)应力(MPa)弧垂10f100(m)50102.070 0.401 88.030 0.465 74.158 0.552 10099.210 0.413 85.995 0.476 73.340 0.558 15095.020 0.431 83.191 0.492 72.314 0.566 20090.300 0.453 80.251 0.510 71.329 0.574 25085.800 0.477 77.627 0.527 70.503 0.581 30081.990 0.499 75.502 0.542 69.856 0.586 35078.990 0.518 73.8590.554 69.361 0.590 362.8378.330 0.523 73.5050.557 69.291 0.591 40074.650 0.548 70.842 0.578 67.407 0.607 45070.950 0.577 68.093 0.601 65.462 0.625 50068.320 0.599 66.116 0.619 64.048 0.639 55066.410 0.616 64.659 0.633 62.994 0.650 60064.980 0.630 63.559 0.644 62.191 0.658 温度（）203040档距（m）应力(MPa)弧垂20f100(m)应力(MPa)弧垂30f100(m)应力(MPa)弧垂40f100(m)5060.589 0.676 47.647 0.859 36.030 1.136 10061.573 0.665 51.136 0.801 42.450 0.964 15062.663 0.653 54.434 0.752 47.660 0.859 20063.614 0.644 57.095 0.717 51.660 0.792 25064.375 0.636 59.148 0.692 54.700 0.748 30064.615 0.634 60.718 0.674 57.030 0.718 350