q A b8_Ma).M(x,dx=L EI 3EI ATITTT B △n=∫M(x)M(x 静定基 E2q1·xdx 8EI M(X=--gx B 61X1+△1p=0 X、q4 0 M(x1)=x1 3EI 8EI A 3aL 8q X1 A B 静定基 3EI L M(x ) M(x )dx EI 1 3 1 1 L 0 1 1 =  =  A B X1 2 1 qx1 2 1 M(x ) = − 8EI qL qx x dx 2 1 EI 1 M(x ) M(x )dx EI 1 4 1 1 L 0 2 1 1 1 L 0 1P 1 = −  = −  =    X 0 11 1 + 1P = 0 8EI qL X 3EI L 4 1 3 − = 8 3qL X1 = q A B X1 1 1 M(x ) = x X1 =1 A