弯矩MB为：
11MQA??0.375q1ly?(ly?lx)q?B22ly??0.375?80.561?7.2?0.5?(7.2?0.5?6.3)?253.767?11M左右QB?QB?0.625q1ly?(ly?lx)q?B22ly?0.625?80.561?7.2?0.5?(7.2?0.5?6.3)?253.767?1676.086?1109.192kN7.21676.086??498.6037.2
剪力图和弯矩如图所示：
7.2.2中间横梁JL2
JL2承载两侧传来的梯形荷载q， q?2?253.767?507.534kN/m
均布当量荷载p1为：p1?2?178.094?356.188kN/m 支座弯矩
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2MB?0.125plly?0.125?356.188?7.22?2308.098kN?m
②跨中最大弯矩。跨中最大弯矩近似由下式求得（边跨）
12q(3ly?lx2)?0.4MB24
507.534??(3?7.22?6.32)?0.4?2308.098??1526.247kN?m24Mmax??③支座剪力
剪力由两部分荷载产生，梯形荷载q和支座弯矩MB，即
11MQA??(ly?lx)q?B22ly??0.5?(7.2?0.5?6.3)?507.534?11M左右QB?-QB?(ly?lx)q?B22ly?0.5?(7.2?0.5?6.3)?507.534?2308.098?1348.326kN7.22308.098??707.187kN7.2
内力如图：
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7.2.3边缘纵梁JL3
梁长L???????????m，荷载由两部分组成：
边缘悬臂板传来的均布荷载q1?pjb?80.561?1.0?80.561kN/m 三角形分布荷载，最大值为q?253.767kN/m
转化为均布当量荷载p1为p1?0.625q?0.625?253.767?158.604kN/m 均布荷载为： p?q1?p1?80.561?158.604?239.165kN/m ①支座弯矩
利用5跨连续梁系数表，支座弯矩为
MB?0.105plx2?0.105?239.165?6.32?996.710kN?mMc?0.079pl?0.079?239.165?6.3?749.904kN?m2x2
②跨中最大弯矩 边跨：
x0?12MB1996.710lx???6.32??2.448m 4q4253.767q3qMx0?lxx0?Bx03lx4lxMmax??253.767253.767996.710?2.4483??6.3?2.448??2.448 3?6.346.3??394.158kN?m第二跨：
x0?12McMB1749.904?996.710lx???6.32??2.992m 4q4253.767M?MBq3qx0?lxx0?Mc?cx03lx4lxMmax??253.767253.767749.904?996.710?2.9923??6.3?2.992?749.904??2.992 3?6.346.3??30.90kN?m 15
中间跨：
x0?3.15m
Mmax??1q3q2q1(x0?lxx0)?x0?lxx0?Mc23lx41253.767253.767?80.561?(3.152?6.3?3.15)??3.153??6.3?3.15?749.904 23?6.34??489.114kN?m③支座剪力
1M1996.710QA??(2q1?q)lx?B???(2?80.561?253.767)?6.3???495.0824lx46.31左QB?QA?q1lx?qlx??495.082?80.561?6.3?0.5?253.767?6.3?811.819kN2MM1749.904?996.710右QB??(2q1?q)lx?c?B??0.25?(2?80.561?253.767)?6.3???692.626kN4lx6.31右Qc左?QB?q1lx?qlx??692.626?1306.900?614.274kN21Qc右??(2q1?q)lx??653.450kN4
内力如图四所示：
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