跨中弯矩 M1=(0.244 52.8+0.289 75.6) 6.3=218.8 KN m M2=(0.067 52.8+0.200 75.6) 6.3=118 KN m
支座弯矩 MB=-(0.267 52.8+0.311 75.6) 6.3=-236.46 KN m 支座边缘弯矩 M'B= MB-1/2V0b
=-[236.46-0.3/2 (52.8+75.6) =-217.2KN m
剪力计算 VA=0.733 52.8 +0.866 75.6= 104.172 KN VBl= -(1.267 52.8+1.311 75.6)= - 166 KN VCr=1.0 52.8+1.222 75.6=145.18 KN 主梁的内力包络图见图
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