无缝线路课程设计(3)

?1d? 直线轨头动弯压应力

Md38064065.7??96.121MPa W1396000?2d?（6）钢轨强度检算

Md38064065.7??112.151MPa W2339400 查表得25m长的75kg/m钢轨的温度力。?t?51MPa

对于U71钢轨，屈服极限?s?405MPa，新轨的安全系数K?1.3，因此，允许应力

[?]?405?311.5MPa 1.3 A、曲线轨底 ?1d??t?130.725?51?181.725?[?] 轨头 ?2d??t?150.525?51?201.525?[?]

B、直线轨底 ?1d??t?96.121?51?147.121?[?] 轨头 ?2d??t?112.151?51?163.151?[?] 所以东风8型机车通过改曲线时，钢轨强度满足要求。 2、混凝土轨枕强度检算 （1）计算、k值

计算I型混凝土轨枕弯矩、道床应力查表得：胶垫+道床+路基换算后的总的支撑刚度

D?80000N/mm

u?80000?140.795（MPa）

568.2 K?4 （2）计算

u140.795?1?4?0.00151mm 544EI4?2.1?10?3217?10?P?

?P?为最大，是最不利轮位。

列表（见下表）计算，动轮1表中，其中kx为弧度值。

轮位 计算轮 项目 DF8-1 P(N) 110000 x(mm) 0 βx DF8-1 0 1 110000 DF8-2 110000 1800 2.718 DF8-3 110000 3600 5.436 DF8-4 110000 12000 18.12 1.06619E-09 0.000117 DF8-5 110000 13800 20.838 4.53321E-10 4.98654E-05 DF8-6 110000 15600 23.556 -5.9201E-11 -6.5121E-06 C62-1 100000 17100 25.821 8.60092E-12 8.60092E-07 C62-2 100000 18900 28.539 -4.948E-13 -4.948E-08 C62-3 100000 25800 38.958 1.51584E-17 1.51584E-12 C62-4 100000 27550 41.6005 -1.212E-18 -1.212E-13 ∑Pμ(N) ? p?(N) -0.03304 -0.00038 -3634.58 -41.8509 106323.6 P(N) 110000 x(mm) 1800 βx 2.7342 -0.0339 -3728.77 110000 0 0 1 110000 110000 1800 2.7342 -0.0339 -3728.77 110000 10200 15.4938 -1.4275E-07 -0.0157 110000 12000 18.228 2.7969E-09 0.000308 110000 12000 18.228 2.7969E-09 100000 13500 20.5065 1.13058E-09 100000 15300 23.2407 -1.0201E-10 -1.0201E-05 100000 22200 33.7218 1.61024E-16 1.61024E-11 100000 23950 36.38005 -1.1411E-16 -1.1411E-11 DF8-2 ? p?(N) 102542.4 0.000308 0.000113 P(N) 110000 x(mm) 4300 βx 4.9493 110000 2000 2.302 110000 0 0 110000 8400 9.6684 110000 10200 11.7402 110000 12000 13.812 100000 13500 15.5385 100000 15300 17.6103 100000 22200 25.5522 100000 23950 27.56645 110259.9 DF8-3 ? p?(N) -0.00523 -574.94 0.007665 1 843.149 110000 -7.6641E-05 -4.5926E-07 1.27152E-06 -1.4586E-07 -1.3943E-08 -0.00139 1.05581E-11 1.05581E-06 -1.1682E-13 -1.1682E-08 -8.43046 -0.05052 0.139867 -0.01459 P(N) 110000 x(mm) 10800 βx 16.308 -1.1496E-07 -0.01265 110000 9000 13.59 1.72191E-06 0.18941 110000 7200 10.872 -2.1177E-05 -2.32951 110000 0 0 1 110000 110000 1800 2.718 -0.03304 -3634.58 110000 3600 5.436 100000 1500 2.265 100000 3300 4.983 -0.00477 -477.199 100000 10200 15.402 -1.335E-07 -0.01335 100000 11950 18.0445 -4.0494E-10 -4.0494E-05 DF8-4 ? p?(N) -0.00038 0.013372 -41.8509 1337.225 107181.4 P(N) 110000 x(mm) 14000 βx 21.14 6.12513E-11 6.73764E-06 110000 12200 18.422 4.94681E-09 110000 10400 15.704 -1.507E-07 110000 2000 3.02 110000 0 0 110000 1800 2.718 100000 3300 4.983 100000 5100 7.701 0.000516 51.60267 100000 12000 18.12 1.06619E-09 0.000107 100000 13750 20.7625 5.83189E-10 5.83189E-05 DF8-5 ? p?(N) -0.04252 1 -4677.38 110000 -0.03304 -0.00477 -3634.58 -477.199 101262.4 0.000544 -0.01658 DF8-6 P(N) 110000 x(mm) 16100 βx 24.311 110000 14300 21.593 110000 12500 18.875 110000 4100 6.191 110000 2300 3.473 110000 0 0 100000 1500 2.265 100000 3300 4.983 100000 10200 15.402 100000 11950 18.0445 106726.3 ? p?(N) -1.4214E-12 -1.5635E-07 -2.2381E-10 -2.4619E-05 6.50827E-09 0.000716 0.001851 -0.03943 203.5633 -4337.3 1 110000 0.013372 1337.225 -0.00477 -477.199 -1.335E-07 -0.01335 -4.0494E-10 -4.0494E-05 P(N) 110000 x(mm) 15600 βx 23.556 -5.9201E-11 -6.5121E-06 110000 13800 20.838 4.53321E-10 4.98654E-05 110000 12000 18.12 1.06619E-09 0.000117 110000 3600 5.436 110000 1800 2.718 110000 1500 2.265 100000 0 0 100000 1800 2.718 -0.03304 -3304.16 100000 8700 13.137 2.72329E-06 0.272329 100000 10450 15.7795 -1.4997E-07 -0.015 C62-1 ? p?(N) -0.00038 -0.03304 -41.8509 -3634.58 0.013372 1 1470.947 100000 94490.62 P(N) 110000 x(mm) 18900 βx 28.539 -4.948E-13 -5.4428E-08 110000 17100 25.821 8.60092E-12 9.46101E-07 110000 15300 23.103 -1.2401E-10 -1.3641E-05 110000 6900 10.419 -4.1311E-05 110000 5100 7.701 0.000516 110000 3300 4.983 100000 1800 2.718 100000 0 0 1 100000 100000 6900 10.419 -4.1311E-05 -4.13106 100000 8650 13.0615 2.88017E-06 0.288017 C62-2 ? p?(N) -0.00477 -0.03304 -524.918 -3304.16 96219.3 -4.54417 56.76294 C62-3 P(N) 110000 x(mm) 25800 βx 38.958 110000 24000 36.24 110000 22200 33.522 110000 13800 20.838 110000 12000 18.12 110000 10200 15.402 100000 8700 13.137 100000 6900 10.419 100000 0 0 100000 1750 2.6425 97153.16 ? p?(N) 1.51584E-17 1.66742E-12 -1.6099E-16 -1.7709E-11 9.67627E-16 1.06439E-10 4.53321E-10 4.98654E-05 1.06619E-09 0.000117 -1.335E-07 2.72329E-06 -4.1311E-05 -4.13106 1 100000 -0.02843 -2842.97 -0.01468 0.272329 P(N) 110000 x(mm) 27550 βx 41.6005 -1.212E-18 -1.3332E-13 110000 25750 38.8825 1.69323E-17 1.86255E-12 110000 23950 36.1645 -1.8952E-16 -2.0847E-11 110000 15550 23.4805 -6.842E-11 -7.5262E-06 110000 13750 20.7625 5.83189E-10 6.41508E-05 110000 11950 18.0445 -4.0494E-10 -4.4544E-05 100000 10450 15.7795 -1.4997E-07 -0.015 100000 8650 13.0615 2.88017E-06 0.288017 100000 1750 2.6425 -0.02843 -2842.97 100000 0 0 1 100000 C62-4 ? p?(N) 97157.3 …… 此处隐藏：2885字，全部文档内容请下载后查看。喜欢就下载吧 ……