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1、七风荷载内力计算基本风压wo=O.4kN/m2,地面粗糙度为B类。本章计算以左风为例。(一)风荷载计算Wk=0z国|izWo,建筑物高度30m,故0z=LO迎风时(isi=+0.8,背风时国2=-().5,贝U禺=().8+().5=1.3计算过程见下表楼层高度H(m)眼WkA(m2)P(kN)五19.21.230.6421.8413.98四15.61.150.628.0816.85-12.01.060.5528.0815.448.41.00.5228.0814.604.81.00.5232.7617.04计算简图(单位:kN)13.98、o9cn16.85、o9e15.44、g9S14.60
2、、o9S17.04、72007 3000 7200(二)内力计算1.抗侧刚度和反弯点高度确定 计算过程见下表楼层KaD(104kN/m)yoIyia2y20t3Y3yhh-yh边 柱五1.190.373.080.3610101.302.30四1.190.373.080.411010101.482.121.190.373.080.461010101.661.941.190.373.080.501010101.801.801.270.541.940.6200.6803.292.01中柱五2.390.544.50.4210101.512.09四2.390.544.50.451010101.621.9
3、8-2.390.544.50.501010101.801.802.390.544.50.501010101.801.802.550.672.410.5500.6802.922.382.剪力在各层分配(单位:kN)5Vpi =, i=nDk/ AVpiVP5=13.98V5=2.84V5=4.15Vp4=30.83V4=6.27V4=9.15Vp3=46.27V3=9.41V3=13.73Vp2=60.87V2=12.38V2=18.06Vpi=77.91Vi=17.39Vi=2L573 .柱端弯矩计算(单位:kNm)6.538.673.696.2713.2919.129.2814.8218.2
4、624.7115.6224.7122.2832.5122.2832.5134.9551.3457.2162.984 .风荷载作用下的内力图M图(单位:kN-m)1.512.911.41.512. 844. 156.274. 119. 438.515.85. 629.416. 5513. 7313. 2512.512. 1712. 389. 2218. 0619. 1822. 4621.3917. 3913. 7421.5728. 1136. 8335. 13/V/ /N/V, N图(单位:kN)5.梁端柱边弯矩(单位:kN-m)6.083.863.4915.7511.3910.2225.5717.6815.9035.1425.6923.0252.7637.2233.03