第4章内力计算

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1、第4章内力计算第4章内力计算4.1风荷载作用下框架内力计算由D值法计算结构在风荷载作用下的内力，计算过程及结果见表4-1。表4-1风荷载作用下柱端弯矩表(kN·m)层次边柱D/∑DVi△yiM上M下50.2338.450.940.44653.272.6440.23318.481.270.457.105.8130.23327.971.490.59.789.7820.23336.571.860.512.7812.7810.24244.23.210.5521.9026.77层次中柱D/∑DVi△yiM上M下50.2678.451.410.453.723.0540.26718.4

2、81.490.57.407.4030.26727.971.490.511.2011.2020.26736.571.650.514.6514.6510.25844.212.470.5523.3528.54梁端风荷载弯矩、剪力、轴力见表4-2,其中λ=KR/（KR+KL）。4.2水平地震作用下框架内力计算以12轴横向框架为例进行计算，在水平地震作用下的框架住弯矩计算采用D值法，其计算过程见表4-3。表4-2梁端风荷载弯矩(kN·m)、剪力(kN)、轴力(kN)层次边柱处中柱处剪力轴力∑Mc∑Mc1-λλ∑Mc右∑Mc左ABBC边柱中柱32第4章内力计算续表4-2层次边柱处中柱

3、处剪力轴力∑Mc∑Mc1-λλ∑Mc右∑Mc左ABBC边柱中柱53.273.720.310.692.571.150.822.140.821.3249.7410.450.310.697.213.242.406.013.224.93312.5918.600.310.6912.835.773.4010.696.6212.22222.5625.850.310.6917.848.015.6614.8712.2821.43134.6838.000.310.6926.2211.788.6021.8520.8834.68风荷载作用下框架的弯矩、剪力、轴力图见图4-1,4-2。图4-1风荷

4、载作用下的框架弯矩（单位KN.m）图4-2风荷载作用下的剪力、轴力(单位KNm)表4-3水平地震作用下框架柱弯矩计算柱层次层剪力总刚度各柱刚度D/∑DVikyhM下M上边柱5748.611102920168700.015311.452.930.44715.3419.0141366.511102920168700.015320.912.930.4528.2334.5031847.601102920168700.015328.272.930.542.4142.4132第4章内力计算续表4-322191.891102920168700.015333.542.930.550.31

5、50.3112470.0740992062300.015237.554.460.5593.9776.88中柱5748.611102920192800.017513.104.240.45　17.6921.6241366.511102920192800.017523.914.240.535.8735.8731847.601102920192800.017532.334.240.548.5048.5022191.891102920192800.017538.364.240.557.5457.5412470.0740992066700.016340.266.450.55100.7

6、582.43水平地震作用下框架剪力、轴力计算见表4-4。表4-4水平地震作用下框架剪力、轴力层次边柱中柱剪力轴力Mc梁端λMcMrMlabbc边柱中柱519.01-19.010.6921.6214.926.704.7612.434.767.67449.84-49.840.6953.5636.9616.6012.3030.817.0626.17370.64-70.640.6984.3758.2226.1517.9248.5234.9856.77292.72-92.720.69106.0473.1732.8723.2660.9858.2494.491127.19-127.19

7、0.69139.9796.5843.3931.5980.4889.83143.38地震作用下框架的弯矩、剪力、轴力图见图4-3,4-4。图4-3水平地震作用下的框架弯矩图（单位kN·m）32第4章内力计算图4-4水平地震作用下的剪力、轴力图（单位kN）4.3恒载作用下框架内力计算4.3.1计算方法选用本工程荷载作用下的内力计算采用分层法4.3.2用弯矩分配法计算梁柱端弯矩注意：除底层外柱的线刚度需要乘以修正系数0.9，并且除底层柱外其它各层的弯矩传递系数取1/3。修正后的梁柱线刚度见表4-5。表4-5梁柱线刚度表（10-4E.