钢梯梁计算

钢楼梯斜梁计算说明：1.本程序适用于所有钢结构楼梯梯梁计算。2.表格中方框内的数据为设计输入数据，选用槽钢直接点击箭头选用。3.默认材质为Q235-B，挠度控制为L/250，也可以使用者自己控制。选用槽钢或扁钢梯梁水平长度梯梁垂直高度梯段宽度恒荷载标准值活荷载标准值10［20a5000 mm5000 mm1000 mm1 KN/m2（**不包括斜梁自重**）3.5 KN/m2P=3.32KN50005000Gk=Qk=P=1x0.5+0.22=3.5x0.5=1.2Gk+1.4Qk=0.73 KN /m1.75 KN /m3.32 KN /m10.38KN·m5.87 KNIx=1780.4cm4Wx=178.0Sx=104.7cm3cm31) 荷载计算作用于斜梁的恒荷载标准值：作用于斜梁的活荷载标准值：则作用于斜梁的荷载设计值：2) 内力计算斜梁跨中最大弯矩 Mmax=1/8*PL2=斜梁剪力 Vmax=1/2*PLCosa=3) 截面验算槽钢:［20a材质: Q235Wt=22.64Kg /mtw=55.547.0N/mm2mm＜στ=Mmax10.38x10^61.05x178x10^3γxWxfv=215 N/mm2fv=125 N/mm24 =VmaxSx5.87x10^3x104.7x10^31780.4x10^4x75x(0.72+1.75)x Cosa xIxtw5 PkL4384 EIx4.93N/mm2＜fmax=5000^2 + 5000 ^2384x206x10^3x1780.4x10^415.545000^2+5000^2OK！1/454＜1/25015.54mmfmax / [υ] =4) 截面验算结果中冶赛迪建筑工程设计部1版权所有，严禁盗版

12345678910111213141516171819202122232425262728293031自重腹板厚Wttw［1010.015.3［1212.065.5［12.612.325.5［14a14.546.0［14b16.738.0［16a17.246.5［16b19.758.5［18a20.177.0［18b22.999.0［20a22.647.0［20b25.789.0［22a25.007.0［22b28.459.0［24a26.867.0［24b30.639.0［24c34.4011.0［25a27.407.0［25b31.349.0［25c35.2611.0［27a30.847.5［27b35.089.5［27c39.3211.5［28a31.427.5［28b35.819.5［28c40.2111.5-8x16010.048-10x16012.5610-8x18011.38-10x18014.1310HW200x20049.98HW250x25071.89惯性矩Ix198.0346.0391.0563.7609.4866.2934.51270.01370.01780.41910.02390.02570.03050.03280.03510.03370.03530.03690.04360.04690.05020.04752.55118.45484.3273.06341.33388.8486471710689Wx39.757.762.180.587.1108.3116.8141.0152.2178.0191.0218.0234.0254.0274.0293.0270.0282.0295.0323.0347.0372.0339.5365.6391.734.1342.6643.254472855Sx23.533.636.447.552.463.970.383.591.6104.7114.7127.6139.7149.0162.0174.0157.8173.5189.1192.0210.5228.7200.2219.8239.425.63232.440.5262.7476.3中冶赛迪建筑工程设计部2版权所有，严禁盗版

3版权所有，严禁盗版

中冶赛迪建筑工程设计部