三铰拱内力计算及内力图1

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1、三铰拱内力计算及内力图1、结构及其受力情况拱轴方程：y=1/16x(16-x)计算公式：相应简支梁的内力方程为：2、列表计算内力X(m)YY'α(弧度)COS(α)SIN(α)FH(kN)M0(kN*m)FQ0(kN)M(kN*m)FQ(kN)FN(kN)00.001.000.790.710.712550.00267.500.008.84-369.4610.940.880.720.750.66255252.50237.5013.4410.82-348.3021.750.750.640.800.6025547

2、5.00207.5028.7513.00-328.5032.440.630.560.850.53255667.50177.5045.9415.37-310.3143.000.500.460.890.45255830.00147.5065.0017.89-294.0443.000.500.460.890.45255830.00107.5065.00-17.89-276.1553.440.380.360.940.35255922.5077.5045.94-16.97-265.9863.750.250.240.9

3、70.24255985.0047.5028.75-15.76-258.9173.940.130.120.990.122551017.5017.5013.44-14.26-255.2084.000.000.001.000.002551020.00-12.500.00-12.50-255.0093.94-0.13-0.120.99-0.12255992.50-42.50-11.56-10.54-258.30103.75-0.25-0.240.97-0.24255935.00-72.50-21.25-8.49-2

4、64.97113.44-0.38-0.360.94-0.35255847.50-102.50-29.06-6.44-274.75123.00-0.50-0.460.89-0.45255730.00-132.50-35.00-4.47-287.33123.00-0.50-0.460.89-0.45255770.00-132.505.00-4.47-287.33132.44-0.63-0.560.85-0.53255622.50-162.500.94-2.65-302.36141.75-0.75-0.640.8

5、0-0.60255445.00-192.50-1.25-1.00-319.50150.94-0.88-0.720.75-0.66255237.50-222.50-1.560.47-338.42160.00-1.00-0.790.71-0.712550.00-252.500.001.77-358.863、内力图