钢结构楼梯斜梁计算程序

1、,钢楼梯斜梁计算程序,选用槽钢,28,梯梁水平长度,15000, mm,梯梁垂直高度,6000, mm,P=1.06KN,6000,梯段宽度,1500, mm,恒荷载标准值,0.4, KN/m2（*不包括斜梁自重*）,活荷载标准值,3, KN/m2,15000,1) 荷载计算,作用于斜梁的恒荷载标准值：,Gk=,0.4x0.75+0.58=,0.89,KN /m,作用于斜梁的活荷载标准值：,Qk=,3x0.75=,2.25,KN /m,则作用于斜梁的荷载设计值：,P=,1.2Gk+1.4Qk=,1.07,KN /m,2) 内力计算,斜梁跨中最大弯矩 ,Mmax=1/8*PL2=,30.01 ,

2、KNm,斜梁剪力 ,Vmax=1/2*PLCosa=,7.43 , KN,3) 截面验算,槽钢:,普40a,材质:, Q235,Ix=,17577.7 ,cm4,Wx=,878.9 ,cm3,Wt=,58.91 ,Kg /m,tw=,10.5 ,mm,Sx=,524.4 ,cm3,=,Mmax,30 x106,32.52 ,N/mm2,fv=215 N/mm2,xWx,1.05x878.9x103,=,VmaxSx,7.42x103x524.4x103,2.11 ,N/mm2,fv=125 N/mm2,Ixtw,17577.7x104x10.5,4 ,fmax=,5 PkL4,5x(0.88+

3、0),x Cosa x,15000,2 + 6000 2,20.22 ,mm,384 EIx,384x206x103x17577.7x104,fmax / =,20.22 ,1/798,1/,250,150002+60002,4) 截面验算结果,合 格,Wt,tw,Ix,Wx,Sx,1,普5,5.44 ,4.5 ,26.0 ,10.4 ,6.4 ,2,普6.3,6.63 ,4.8 ,51.2 ,16.3 ,9.8 ,3,普 8,8.04 ,5.0 ,101.3 ,25.3 ,15.1 ,4,普10,10.00 ,5.3 ,198.3 ,39.7 ,23.5 ,5,普12.6,12.31 ,5.

4、5 ,388.5 ,61.7 ,36.4 ,6,普14a,14.53 ,6.0 ,563.7 ,80.5 ,47.5 ,7,普14b,16.73 ,8.0 ,609.4 ,87.1 ,52.4 ,8,普16a,17.23 ,6.5 ,866.2 ,108.3 ,63.9 ,9,普16b,19.75 ,8.5 ,934.5 ,116.8 ,70.3 ,10,普18a,20.17 ,7.0 ,1272.7 ,141.4 ,83.5 ,11,普18b,22.99 ,9.0 ,1369.9 ,152.2 ,91.6 ,12,普20a,22.63 ,7.0 ,1780.4 ,178.0 ,104.7 ,

5、13,普20b,25.77 ,9.0 ,1913.7 ,191.4 ,114.7 ,14,普22a,24.99 ,7.0 ,2393.9 ,217.6 ,127.6 ,15,普22b,28.45 ,9.0 ,2571.3 ,233.8 ,139.7 ,16,普25a,27.40 ,7.0 ,3359.1 ,268.7 ,157.8 ,17,普25b,31.33 ,9.0 ,3619.5 ,289.6 ,173.5 ,18,普25c,35.25 ,11.0 ,3880.0 ,310.4 ,189.1 ,19,普28a,31.42 ,7.5 ,4752.5 ,339.5 ,200.2 ,20,普2

6、8b,35.81 ,9.5 ,5118.4 ,365.6 ,219.8 ,21,普28c,40.21 ,11.5 ,5484.3 ,391.7 ,239.4 ,22,普32a,38.07 ,8.0 ,7510.6 ,469.4 ,276.9 ,23,普32b,43.10 ,10.0 ,8056.8 ,503.5 ,302.5 ,24,普32c,48.12 ,12.0 ,8602.9 ,537.7 ,328.1 ,25,普36a,47.80 ,9.0 ,11874.1 ,659.7 ,389.9 ,26,普36b,53.45 ,11.0 ,12651.7 ,702.9 ,422.3 ,27,普36c,59.10 ,13.0 ,13429.3 ,746.1 ,454.7 ,28,普40a,58.91 ,10.5 ,17577.7 ,878.