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9 多层钢筋混凝土框架内力组合毕业论文.doc

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9 多层钢筋混凝土框架内力组合毕业论文.doc

东南大学毕业设计62九内力组合本章中单位统一为弯矩kN∙m,剪力kN,轴力kN。根据前面第四至八章的内力计算结果,即可进行框架各梁柱各控制截面上的内力组合,其中梁的控制截面为梁端柱边及跨中,由于对称性,每层梁取5个控制截面。柱分为边柱和中柱,每根柱有2个控制截面。内力组合使用的控制截面标于下图。(一)梁内力组合1.计算过程见下页表中,弯矩以下部受拉为正,剪力以沿截面顺时针为正注(1)地震作用效应与重力荷载代表值的组合表达式为EhGE3S.12S.1S其中,SGE为相应于水平地震作用下重力荷载代表值效应的标准值。而重力荷载代表值表达式为n1iikQikQGGGk恒荷载标准值Qik第i个可变荷载标准值ΨQi第i个可变荷载的组合之系数,屋面活荷载不计入,雪荷载和楼面活荷载均为0.5。考虑到地震有左震和右震两种情况,而在前面第八章计算地震作用内力时计算的是左震作用时的内力,则在下表中有1.2①0.5②1.3⑤和1.2①0.5②1.3⑤两列,分别代表左震和右震参与组合。(2)因为风荷载效应同地震作用效应相比较小,不起控制作用,则在下列组合中风荷载内力未参与,仅考虑分别由恒荷载和活荷载控制的两种组合,即1.35①1.40.7③和1.2①1.4③两列。ABCD123452211东南大学毕业设计63梁内力组合计算表楼层截面①恒荷载②活荷载屋面布雪载③活荷载屋面布活载④风荷载左风MVMMVVMV五132.5860.194.466.081.516.419.5119.36275.537.431.1130.07346.965.375.533.861.516.8114.7221.23421.8213.552.143.492.911.417.634.32514.231.404.46四176.42118.0213.615.754.1119.7614.819.832125.8925.442.1823.88388.81122.516.5811.394.1120.8317.3920.76426.7614.025.4510.228.515.415.055.41520.172.6602.2三177.56118.0714.1925.576.5519.7614.1919.762124.5224.673.9524.67389.64122.4516.9817.686.5520.816.9820.8426.2314.025.2515.913.255.415.255.41519.612.4302.43二177.67118.1114.2135.149.2219.814.2119.82124.5224.674.7324.67389.53122.4116.9725.699.2220.7916.9720.79426.2814.025.2623.0219.185.415.265.41519.672.4402.44一171.44117.7713.1152.7613.7419.8313.1119.832130.7424.667.7724.66381.37121.3915.5437.2213.7420.715.5420.7427.5513.845.433.0328.115.375.45.37521.322.7502.75东南大学毕业设计64梁内力组合计算表(续)楼层截面⑤地震作用左震1.2①0.5②1.3⑤1.2①0.5②1.3⑤MVMVMV五141.8610.3712.6562.5996.1989.5627.65105.0485.15326.5710.3794.1496.0125.0669.05424.01203.758.8958.6843.115017.9217.92四196.4825.3825.56120.49225.29186.47212.74182.89149.77371.0125.38208.83192.4924.21126.50463.6153.0147.3148.84118.0888.985025.8025.80三1159.6340.7105.93100.63309.11206.45225.32197.14131.31310940.7259.46212.3323.94106.51498.0681.7292.8586.17162.10126.315024.9924.99二1193.6950.89150.0787.46353.53219.77225.76197.71130.743142.1750.89302.44225.5267.2093.214127.36106.13130.88117.90200.26158.045025.0725.07一1243.7361.41223.2673.39410.44233.06241.09225.10118.273161.5661.41317.00237.92103.0678.264145.61121.34152.99137.91225.59177.575027.2327.23东南大学毕业设计65梁内力组合计算表(续)楼层截面1.35①1.40.7③1.2①1.4③MmaxMmin|Vmax|MVMV五153.30100.2352.4199.3312.6596.19100.232131.43132.73132.7385.15377.74109.0576.89108.1725.0694.14109.05436.9322.5336.8722.313.7558.6843.11523.5823.3217.9223.58四1117.67178.76112.42169.3925.56225.29186.472193.35184.50193.35149.773136.94185.72130.92176.0624.21208.83192.49441.0824.2339.1824.4047.31118.0888.98529.3927.2825.8029.39三1118.61178.76112.94169.35105.93309.11206.452192.28183.96197.14131.313137.65185.69131.34176.0623.94259.46212.33440.5624.2338.8324.4092.85162.10126.31528.8526.9324.9928.85二1118.78178.85113.10169.45150.07353.53219.772192.28183.96197.71130.743137.50185.63131.19176.0067.20302.44225.52440.6324.2338.9024.40130.88200.26158.04528.9527.0225.0728.95一1109.29178.42104.08169.09223.26410.44233.062200.67191.41225.10118.273125.08184.16119.40174.65103.06317.00237.92442.4823.9540.6224.13152.99225.59177.57531.4829.4327.2331.48

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