Ⅴ 风荷载内力计算.doc

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1、五风荷载内力打算全然风压w0=0.45kN/m2，空中粗糙度为B类。本章打算以左风为例。风荷载打算wk=zszw0，建筑物高度30m，故z=1.0迎风时s1=+0.8，背风时s2=0.5，那么s=0.8+0.5=1.3打算过程见下表楼层高度H(m)zwkA(m2)P(kN)五20.11.250.7312.429.09四16.21.170.6814.049.58三12.31.060.6214.048.74二8.41.000.5914.048.21一4.51.000.5915.128.85打算简图如下单位：kN内力打算抗侧刚度跟反弯点高度判定打算过程见下表楼层KD(104kN/m)y0Iy12y2

2、3y3yhh-yh边柱五1.780.471.490.3910101.522.38四1.780.471.490.441010101.722.18三1.780.471.490.491010101.911.99二1.780.471.490.501010101.951.95一2.290.650.970.5500.7802.752.25中柱五4.010.672.120.4510101.762.14四4.010.672.120.501010101.951.95三4.010.672.120.501010101.951.95二4.010.672.120.501010101.951.95一5.170.791.5

3、20.5500.7802.752.25剪力在各层分配单位：kN，VP5=9.09V5=1.88V5=2.67VP4=18.67V4=3.85V4=5.48VP3=27.41V3=5.66V3=8.05VP2=35.62V2=7.35V2=10.46VP1=44.47V1=8.66V1=13.57柱端弯矩打算单位：kNm，分不为第i层柱的上下端弯矩。4.475.712.864.708.3910.696.6210.6911.2615.7010.8115.7014.3320.4014.3320.4019.4930.5323.8237.32梁端弯矩打算单位：kNm，为节点左右的梁端弯矩；为节点上下的柱端弯矩；为节点左右的梁的线刚度。2.534.473.186.8111.258.5811.6717.8814.7215.9725.1420.1322.5333.8228.40风荷载感染下的内力图M图单位：KNmVNV，N图单位：kN梁端柱边弯矩单位：kNm4.13-2.143.0010.37-5.818.1016.44-10.0313.9023.14-13.6919.0131.08-19.4026.82