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解:1)求分配系数:,0.513 0.478,0.363 0.637,0.762 0.238,2)求固端弯矩:,78.1 102.0,102.0 33.3,33.3 288,m,1,3,12.3 11.6,194.1 60.6,62.3 109.3,16 15.2,2,1,3,41.7 13,10.318.2,2,1,3,2.7 2.5,6.9 3.2,1.7 3.1,2,1,3,0.5 0.4,1.2 0.4,0.3 0.5,2,1,3,0.1 0.1,0.2 0.1,M,0,109.7,109.7,42.3,42.3,211.7,211.7,M(kN.m),点击左键,一步步播放。结束播放请点“后退”。,