-2.67-2.67, cWii格.-33 B 4m* 4m* 4m M1图 52.67-2.67 -13多p B 4细4细4细一 M2图 1)确定力法基本未知量和基本体系 力法方程:111+612*2+△1-0.02 821X1+822X2+A20 1合267×42×2.67×2B+2.67×82×267x232852 i2可2.67×42X2.67×23+2.67x82x267X2B 28.52 EI 812621267×42X1.3x2x22.67X42x1.3x2/32.67X1/3) H.3x42X1.3X1/32.67x23)F2487 EI A1=.r91 △1-0 X2=275.66KN:x1=-316.12KN A2=-r91 42-0 -313.60-313.60 HD C D 475.44475.44 M图 M 1 图 M 2 图 1)确定力法基本未知量和基本体系 力法方程: 11x 1 + 12x 2 + 1 =-0.02 21x 1 + 22x 2 + 2 =0 11= 1 EI [2.67×4/2×2.67×2/3+2.67×8/2×2.67×2/3]= 28.52 EI 22= 1 EI [2.67×4/2×2.67×2/3+2.67×8/2×2.67×2/3]= 28.52 EI 12= 21 = 1 EI [2.67×4/2×1.33×2/3×2+2.67×4/2×(1.33×2/3+2.67×1/3) +1.33×4/2×(1.33×1/3+2.67×2/3)]= 24.87 EI = -∑r i c i 1 =0 x2=275.66KN; x1=-316.12KN = -∑r i c i 2 =0 M 图