菜园坝长江大桥钢桁梁设计计算书420m钢拱桥Word文档下载推荐.docx
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菜园坝长江大桥钢桁梁设计计算书420m钢拱桥Word文档下载推荐.docx
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刚度
各类杆件
2
局部稳定
压杆
3
总体稳定
4
强度
5
疲劳
出现拉应力的受循环荷载杆件
设计方法及步骤:
1.参考已有的设计资料及初步计算结果,初步拟定结构杆件尺寸。
2.根据初步拟定的截面尺寸,结合荷载情况,算出杆件内力,根据内力调整截面,直至符合要求为止。
3.为了简化杆件类型以简化制造,便于互换和管理,同类杆件中内力相差不大者,尽量采用相同的截面。
这样虽然多用了一些钢材,但制造工费降低,总的经济效果有所提高。
这是检算时有些杆件应力有较大富裕的原因。
二、杆件截面几何特征的计算
1.由于弦杆内力较大,且为了便于连接,故上、下弦杆均采用箱型截面,尺寸约为800*980,见图2-1、图2-2、图2-3、图2-4。
图2-1下弦杆件截面示意图
图2-2中(边)上弦杆件截面示意图
下弦杆内力表表2-2
部位
内力
情况
一期恒载
二期恒载
城-A
轻轨
人群
内力组合
轴力最大
弯矩最大
轴力最小
弯矩最小
max
min
B1
P
6.531E+05
8.227E+05
4.059E+05
-1.514E+05
4.665E+05
-1.901E+05
1.542E+05
-9.720E+04
2.316E+06
1.075E+06
M3
1.873E+06
-2.321E+04
2.157E+04
-5.131E+04
3.113E+05
-1.215E+05
1.441E+04
-2.069E+04
2.157E+06
1.687E+06
B1B2
1.033E+06
8.226E+05
6.318E+05
-2.384E+05
7.854E+05
-3.050E+05
2.396E+05
-1.511E+05
3.216E+06
1.220E+06
-3.244E+05
-2.287E+04
4.585E+04
-6.578E+04
3.253E+05
-2.616E+05
2.183E+04
-2.937E+04
-3.740E+03
-6.541E+05
B2
1.422E+06
1.590E+06
1.375E+06
-6.763E+05
1.671E+06
-8.766E+05
5.456E+05
-3.852E+05
5.956E+06
1.243E+06
-2.578E+04
3.457E+02
5.791E+04
-2.313E+04
4.759E+05
-7.081E+05
2.288E+04
-1.067E+04
4.634E+05
-6.880E+05
B2B3
1.673E+06
5.958E+06
1.611E+05
3.957E+02
8.822E+04
-4.658E+04
7.459E+05
-2.234E+05
3.962E+04
-2.945E+04
9.287E+05
-9.657E+04
B3
1.343E+05
9.836E+05
1.609E+06
-1.145E+06
1.982E+06
-1.462E+06
6.708E+05
-5.730E+05
4.612E+06
-1.776E+06
-5.265E+04
7.279E+03
8.040E+04
-3.655E+04
5.083E+05
-8.838E+05
2.981E+04
-1.983E+04
4.947E+05
-8.831E+05
B3B4
1.347E+05
9.835E+05
1.610E+06
1.983E+06
4.613E+06
-1.775E+06
1.235E+05
7.232E+03
8.155E+04
-6.194E+04
7.640E+05
-2.453E+05
3.586E+04
-3.042E+04
9.064E+05
-1.593E+05
B4
-2.875E+06
-9.762E+05
1.346E+06
-1.652E+06
1.626E+06
-2.046E+06
6.271E+05
-7.218E+05
-9.085E+05
-7.858E+06
-3.803E+04
2.060E+04
1.074E+05
-6.234E+04
5.363E+05
-8.869E+05
4.548E+04
-3.563E+04
5.799E+05
-8.891E+05
B4B5
-9.764E+05
1.627E+06
-9.072E+05
5.622E+04
2.073E+04
6.334E+04
-8.223E+04
7.513E+05
-2.617E+05
2.909E+04
-3.120E+04
8.225E+05
-2.437E+05
B5
-7.846E+06
-4.482E+06
6.386E+05
-2.265E+06
6.300E+05
-2.686E+06
4.333E+05
-8.654E+05
-1.096E+07
-1.758E+07
-9.520E+04
1.837E+04
1.081E+05
-9.748E+04
5.265E+05
-8.994E+05
5.669E+04
-5.570E+04
5.206E+05
-1.001E+06
B5B6
6.305E+05
2.356E+04
1.917E+04
3.928E+04
-8.726E+04
7.098E+05
-1.873E+05
1.956E+04
-3.396E+04
7.257E+05
-2.168E+05
B6
-1.093E+07
-6.901E+06
4.609E+05
-2.829E+06
2.689E+05
-3.020E+06
4.330E+05
-1.072E+06
-1.692E+07
-2.405E+07
1.503E+05
3.254E+05
1.157E+05
-2.959E+05
2.894E+05
-5.540E+05
5.906E+04
-1.142E+05
8.672E+05
-3.305E+05
Bz
-9.225E+06
-5.947E+06
1.288E+06
-3.351E+06
2.361E+05
-2.417E+06
7.645E+05
-1.358E+06
-1.342E+07
-2.146E+07
-1.778E+06
-3.875E+05
1.247E+05
-6.944E+05
2.815E+05
-7.171E+05
1.137E+05
-2.777E+05
-1.733E+06
-3.540E+06
B7
-4.585E+06
-2.833E+06
9.851E+05
-2.199E+06
3.717E+05
-1.562E+06
5.836E+05
-9.038E+05
-5.906E+06
-1.153E+07
-2.192E+05
-1.972E+04
7.927E+04
-1.303E+05
4.017E+05
-8.015E+05
5.228E+04
-6.184E+04
2.213E+05
-1.104E+06
B7B8
-4.584E+06
3.723E+05
-5.905E+06
1.440E+05
-1.931E+04
5.383E+04
-4.719E+04
6.820E+05
-2.316E+05
2.519E+04
-2.465E+04
7.978E+05
-1.376E+05
B8
3.474E+06
2.194E+06
1.192E+06
-8.252E+05
1.547E+06
-6.961E+05
5.277E+05
-3.770E+05
8.350E+06
3.976E+06
-3.742E+05
-2.267E+04
7.958E+04
-1.521E+05
4.529E+05
-9.602E+05
4.854E+04
-6.165E+04
1.068E+05
-1.421E+06
B8B9
3.475E+06
8.351E+06
3.977E+06
1.594E+05
-2.305E+04
1.019E+05
-3.677E+04
7.210E+05
-2.027E+05
4.339E+04
-2.866E+04
8.942E+05
-9.513E+04
B9
9.500E+06
5.781E+06
2.046E+06
-5.690E+05
2.890E+06
-5.614E+05
7.585E+05
-2.765E+05
1.998E+07
1.402E+07
-1.089E+05
-1.061E+04
9.007E+04
-6.811E+04
5.318E+05
-9.037E+05
4.436E+04
-3.118E+04
4.600E+05
-1.007E+06
B9B10
-5.691E+05
2.893E+06
1.999E+07
2.944E+05
-1.082E+04
1.428E+05
-3.493E+04
7.745E+05
-1.737E+05
5.719E+04
-2.981E+04
1.131E+06
7.870E+04
B10
1.388E+07
8.067E+06
2.960E+06
-6.116E+05
3.808E+06
-4.687E+05
1.068E+06
-3.737E+05
2.839E+07
2.064E+07
-4.450E+04
-1.349E+04
1.206E+05
-4.217E+04
6.222E+05
-8.823E+05
5.081E+04
-2.356E+04
6.306E+05
-9.013E+05
B10B11
-6.115E+05
4.294E+05
-1.462E+04
1.841E+05
-3.944E+04
8.587E+05
-2.046E+05
7.221E+04
-3.375E+04
1.380E+06
1.757E+05
B11
1.596E+07
8.869E+06
3.387E+06
-7.107E+05
4.035E+06
-5.834E+05
1.258E+06
-4.986E+05
3.194E+07
2.322E+07
5.877E+04
7.409E+02
1.675E+05
-3.551E+04
6.363E+05
-8.673E+05
6.593E+04
-2.621E+04
8.072E+05
-7.673E+05
B11B12
4.037E+06
3.195E+07
4.680E+05
-1.516E+02
1.790E+05
-3.823E+04
8.626E+05
-2.118E+05
6.930E+04
-3.034E+04
1.430E+06
2.258E+05
B12
1.598E+07
8.193E+06
3.349E+06
-8.120E+05
3.625E+06
-7.514E+05
1.277E+06
-5.895E+05
3.091E+07
2.222E+07
1.166E+05
1.400E+04
1.942E+05
-4.320E+04
6.228E+05
-8.665E+05
7.729E+04
-3.615E+04
8.947E+05
-7.087E+05
B12B13
4.728E+05
1.287E+04
1.633E+05
-3.679E+04
8.462E+05
-2.292E+05
6.359E+04
-2.832E+04
1.418E+06
2.306E+05
B13
1.377E+07
6.017E+06
2.832E+06
-9.822E+05
2.570E+06
-9.103E+05
1.124E+06
-6.523E+05
2.507E+07
1.749E+07
1.681E+05
1.371E+04
1.996E+05
-5.845E+04
5.723E+05
-8.739E+05
8.306E+04
-4.663E+04
9.089E+05
-6.835E+05
B13B14
2.572E+06
4.066E+05
1.334E+04
1.293E+05
-3.962E+04
7.908E+05
-2.387E+05
5.212E+04
-2.812E+04
1.268E+06
1.544E+05
B14
9.722E+06
2.440E+06
1.990E+06
-1.258E+06
1.378E+06
-1.078E+06
8.345E+05
-7.036E+05
1.552E+07
9.436E+06
1.650E+05
1.328E+04
1.798E+05
-8.937E+04
5.275E+05
-8.979E+05
7.823E+04
-5.628E+04
8.466E+05
-7.390E+05
B14B15
9.437E+06
3.371E+05
1.351E+04
8.707E+04
-5.382E+04
7.544E+05
-2.572E+05
3.708E+04
-2.840E+04
1.123E+06
5.749E+04
B15
3.635E+06
-2.427E+06
1.239E+06
-2.064E+06
8.387E+05
-1.820E+06
5.439E+05
-8.908E+05
3.300E+06
-3.051E+06
8.866E+04
4.122E+04
1.563E+05
-8.071E+04
4.948E+05
-9.242E+05
6.702E+04
-4.835E+04
7.427E+05
-7.987E+05
B15B16
-3.050E+06
2.261E+05
4.126E+04
5.886E+04
-1.885E+05
7.418E+05
-4.402E+05
2.344E+04
-7.070E+04
9.967E+05
-3.233E+05
B16
0.000E+00
-4.748E+06
8.835E+05
-2.251E+06
6.561E+05
-2.433E+06
3.556E+05
-8.883E+05
-3.228E+06
-9.757E+06
-1.671E+04
9.334E+04
-2.810E+05
4.919E+05
-1.248E+06
4.233E+04
-1.115E+05
5.278E+05
-1.434E+06
B16B17
-1.560E+04
8.277E+04
-1.814E+05
7.892E+05
-4.677E+05
5.364E+04
-7.781E+04
7.970E+05
-6.309E+05
B17
8.912E+04
-3.370E+06
6.976E+05
-1.772E+06
4.969E+05
-1.579E+06
4.464E+05
-7.929E+05
-1.976E+06
-6.982E+06
-9.936E+04
-1.221E+04
6.299E+04
-1.272E+05
4.253E+05
-1.006E+06
3.056E+04
-4
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