山东建筑大学毕业设计说明书

3.7 内力计算

3.7.1 竖向恒载作用下内力计算

竖向恒载作用下的内力计算采用分层法。图3.4中梁上的荷载已全部转化成矩形荷载，在求固端弯矩时可直接根据图示荷载计算。

采用弯矩分配法计算梁端及柱端弯矩，各杆的固端弯矩为M=下。

a、顶层

112gl2。具体计算过程及结果如

9.196kN/m6.476kN/m9.196kN/m

图3.8 顶层荷载图

M???lq?a?a?l?a?l22AB02q?a??l2314?2a?la?a?da=?2???34l?2?6.602q?a??l2l314?2a?a?a?-2???34l?2?96.6

2q?a??l2l314?2a?a?a?-2??234l???15.69=-105.23-30.07-38.57=-173.87KN.m

MAB??lq?a?a3?l?a?0l2da?38.57?30.07?105.23?173.87kN.m

力矩分配

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山东建筑大学毕业设计说明书

柱38.92梁0.3520.648-173.8747.5087.45-57.8920.3837.51-6.082.143.94-0.640.230.020.41-0.070.051212梁38.92柱0.6480.352173.9743.73-115.7818.16-12.161.97-1.280.211212-62.9-6.612-0.69-0.07-0.01-70.27-0.140.03-0.02109.1970.27-109.19顶层

b、四层 杆件固端弯矩

MAB?MCD?-112?10.39?6.62?-37.72kN?m

MBC??1316?2.386?2.42??4.58kN?m

MCB???2.386?2.42??2.29kN?m力矩分配

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山东建筑大学毕业设计说明书

上柱20.500.256下柱0.275右梁0.469-37.72左梁0.48137.72121212121226.23下柱0.353右梁0.166-4.58-2.294.414.738.08-3.744.04-7.470.88-0.420.05-0.0234.78-0.02-0.01-1-5.48-2.58-12.580.961.031.75-0.21-0.31-0.15-10.150.050.060.100.015.425.82-31.74四 层-5.81-7.320.45 24

山东建筑大学毕业设计说明书

c、二、三层

MAB??1121316?15.94?6.62??57.86kN?m

MBC???2.386?2.42??4.58kN?m

MCB???2.386?2.42??2.29kN?m力矩分配

29.61上柱下柱0.270.27右梁0.46-57.8631.06左梁上柱下柱右梁0.3560.2610.2610.12257.86-1.1539.32左梁上柱下柱右梁0.1220.2610.2610.3561.15-25.74左梁23.55上柱0.460.27下柱0.2725.747.637.63136.5-11.86-8.69-8.69-4.06-2.034.6910.0310.0313.680.130.260.54-2.080.540.746.84-4.15-2.45-2.45-0.0250.0127.640.0120.0117.64-44.88-0.05-0.03-0.03-0.0252.45-8.72-8.72-5.104.0710.5710.57-13.428.48-2.45-2.45二、三层

d、一层

MAB??112112112?15.9?6.62??57.86kN?m

MBC???2.386?2.42??1.15kN/mMCB???7.09?6.62??25.74kN/m力矩分配

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