解： 选取位移法基本体系如习题解答图[tex=3.571x1.357]FTfxOk/FL6CCVp2HHopluQ==[/tex]所示。根据结点 [tex=0.714x1.0]jVFRmP3HndwdDGCwdFmiLg==[/tex]和结点 [tex=0.786x1.0]Wj2zFkrpqxe5CqhjLItV+A==[/tex] 处附加刚臂反力矩等于零的静力平衡条件，写出位移法方程[tex=11.571x2.786]thMFOI0/VnVsJT08kMg9k94BOt4WeRkTT0CX/NwizBMwnaTT2Wmr20/OSrekWC78XiH5B9tatQOLuE5H/SD2CqAn9eN/M2Yktk83WNfQtcFX99FaASY0OyDWJqlNRgFjXBPX6LrQ7LHo1V0A8aP1Bh3HwT5ZBd9lzPHFQJfJGwc=[/tex][img=670x518]17a629f91cd7416.png[/img]为了计算位移法方程中的刚度系数和自由项, 分别绘出单位弯矩图和荷载作用下的弯矩图, 如习题解答图 [tex=7.643x1.286]0q5k1WN7L8YHhqECTPQ0EAwiH06X+01VxaRhCZAyES8=[/tex]所示。[tex=24.857x5.214]rZM5/OPAdr7aX+kNl9iwpJJe8gZHAXllO1vau/d6/eM1f8IvH65vgorC0bARMwjYrwP/0n6onJ4VOai79zugvIdxxXFzM+t1KFGOeJ3BYVR/BPFcp1K7b4y55vGFQwFj95hhZQ+srTopTdJJ6/iqmOuu2dH56V06E0Wov54kHqS7G7HsrUuUm8MZaNYs3Vdf0TFPdWJXC8pM6x+64nxiVGdSZSHWpx39SbcLVbqqT8dg0q4Z689c4K3XUtEJM/HjGZsvuikruPK/lKpsLy0/2wSIIoClJPfNqn/AS5b/Cl0LIL9e/kN27K+e7Tt0spyX[/tex]将求得的刚度系数和自由项代入位移法方程, 得[tex=12.5x5.214]thMFOI0/VnVsJT08kMg9k19nimLGKKifHe1SKmqKjIqz8RryzYellwkiAPAjLrq4RLT421yvRxSilnd2X8ToN17lUBJzRFjI+2SWm1X5gTuAZBOA2Y76Dcc2LFNVzf8MFQ5HCq9bRrBSFjtP7p1X+Bj36KLKZOQFf0d/RUTxMjixj2eRA9zVxV0uFnwdm0fpJ/TdFuW1JIplXcIS8T2Maw==[/tex][tex=8.143x5.214]IfEG3NsBfGhtbCalasoF/3cyfkqXm3ZFbSb1RaTH3tNzV+yc13PciGYWYlB/6BBvUi/tHPgFz8AGdKMvklKRlqggbswOzOmAQezg5VYszj0dQOTrp6gf87kpwD+i6WjwLcb8Frkz0yl69/PaEOr3Jw==[/tex]按式 [tex=9.429x1.357]jILah2cHpe8RVf0EOgsJD6FDoJNNgxVNdQ8J1ro2qrwFwzMDodpuanRRRXx5MAiV[/tex]绘出连续梁的弯矩图（习题解答图 [tex=3.5x1.357]om6+B2ETA8aMKSXKE2btQOhd+UB16Vb3tBUutWvBlR4=[/tex] ), 进而绘出梁的剪力图，如习题解答图 [tex=3.5x1.357]usH0H/3SWR42qrQ60hvEKg==[/tex]所示。