毕业设计荷载作用下框架内力分析

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1、第9章竖向荷载作用下框架内力分析9.1确定节点处各杆件的分配系数//由前相对线刚度可算得各层节点处的分配系数，具体如左下图9-1所示:层S节点相对线刚度线阐度总和分£系数左梁右梁上柱下柱左类右梁上柱下柱頂层J1.6400.6502.2900.0000.7160.0000.284H1.6401.3000.6503.5900.4570.3620.0000.181G1.3001.6400.6503.5900.3620.4570.0000.181F1.S400.6502.2900.71$0.0000.0000.284标餱J1.6400.6500.6502.9400.0000.5580.2210.221

2、H1.6401.3000.6500.6504.2400.3870.3070.1530.153G1.3001.6400.6500.6504.24C0.3070.3870.1530.153F1.6400.6500.6502.)4(0.5580.0000.2210.221臨J1.6400.6500.5002.73(0.0000.5880.2330.179H1.6401.3000.6500.5004.0900.4010.3180.1590.122G1.3001.6400.6500.5004.0900.3180.4010.1590.122F1.6400.6500.5002.7900.5880.0000.

3、2330.179图9-1各层节点处的分配系数9.2恒载作用下框架的内力计算为了满足工程精度的要求同吋考虑到计算的简便，我们采用弯矩二次分配法。9.2.1,框架在恒载作用下的受荷总图为:：62.29kN(k:22.B8kN6^22.88kN(x>=62.29kNgi^19.72kN/mL丄,_g«x19.72kN/mmJFIeeco24WWX)图9-29.2.2,各层节点处固端弯矩的计算：均布荷载作用下内力计算方法：（建筑结构静力计算手册第二版）图9-3支座反力：RA==^~剪力：QlAB=-Q1^=y支座弯矩：MFAB=-MF8A=-^-ql2表9-1kN•m项H-J跨G-H跨F-G跨左梁截

4、而右梁截而左梁截而右梁截而左梁截而右梁截而弯矩弯矩弯矩弯矩弯矩弯矩571.5871.584.534.5371.5871.584112.75112.753.993.99112.75112.753112.75112.753.993.99112.75112.752112.75112.753.993.99112.75112.751112.75112.753.993.99112.75112.75恒载标准值作用下框架弯矩二次分配法计算过程：上柱—下柱右梁左梁上柱下柱右梁左梁上柱下柱右梁左梁上柱一下柱0.2840.7160.4570.1810.3620.3620.1810.4570.7160.284

5、-71

6、.5871.580.00-4.534.530-71.5871.5820.3351.25X-30.64-12.14-24.27'-24.2712.1430.64''-51.25-20.3312.46-15.3225.63-8.3212.14H2.148.32-25.6315.32-12.460.812.05-13.45-5.33-10.6610.665.3313.45-2.05-0.8133.60-33.6053.11-25.79-27.3227.3225.79-53.1133.60-33.600.2210.2210.5580.3870.1530.1530.3070.3070.1530.1530

7、.3870.5580.2210.221-112.75112.750.00-3.993.990.00-112.75112.7524.9224.9262.91X-42.09-16.64-16.64-33.39、-33.3916.6416.6442.09z-62.91-24.92-24.9210.1612.46-21.0531.46-6.07-8.3216.694k-16.696.078.32-31.46421.05-10.16•12.46-0.35-0.35-0.88-13.07-5.17-5.17-10.3710.375.175.1713.070.880.350.3534.7337.03-71

8、.7689.05-27.87-30.13-31.0531.0527.8730.13-89.0571.76-34.73-37.030.2210.2210.5580.3870.1530.1530.3070.3070.1530.1530.3870.5580.2210.221-112.75112.750.00-3.993.990.00-112.75112.7524.9224.9262.91-42.09-1