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1、Is绘制三跨主粱的内力包络图。已知：恒载G=74.655 kN活载Q=131.Q4kN计算简图如下，边跨和中间跨的计算跨长相差(63306300) ；6300=0.5%4)x 3-235.94196.62 kX.mV：1= J -( G-KJ) = 205.7- (74.655+131.04) =0Vr= V：1. (GXJ) = 0 (74.655+131.04) = 205.71V3 ）乜:取得支座盘大负弯矩145.0160.69第1跨：266.38Mn= (G*Q)仏工场 3= (74.655+131.04) X 6.33 3-383.24 3306.27 kX.m M1：= (G+Q)
2、3MX23= (74.655+131.04) x6.33 3-383.24xl3178.52kX.mVn= I (OQ) =745.07- (74.655+131.04)= 60.69 tVV1：= V】(g)= 60.69 (74.655+131.04) = 266351V第跨:234.7931.86191.99M：1= (G+Q)4?.14 - .10 xl 3= (74.655+131.04) x 6.30 5.-2?x 2 3+199.53x 1 i109.96 kX.m Mr= (G+Q)&3( W-V0 3= (74.655+131.04) X 6.30 384.23x 1 3+199.53 X 13171.19 kX.m V：1= V比 4GXD =234.79- (74.655+131.04) =29.10 tVVr= V： (GJ) = 29.10 (74.655+131.04)= 176.6)t(4)主粱弯矩及翦力包络图
