Q235-A钢轴心受压构件的稳定系数

1、精心整理Q235-A 钢轴心受压构件的稳定系数$表1入01234567890 :1.000.990.990.990.980.980.980.98:0.970.970752974196100.970.970.960.960.960.960.950.950.950.944186308529200.940.940.940.930.930.930.930.920.920.92741863074130 1 0.910.910.910.900.900.900.890.89 r 0.890.888529639639400.880.880.870.870.870.860.860.860.850.8562952

2、84185500.850.840.840.840.830.830.830.820.820.822963962952600.810.810.810.800.800.790.790.780.780.77840627394970 :0.770.770.760.760.750.750.740.73 r 0.730.72505050493 8800.720.710.710.700.690.690.680.680.670.662604826037900.660.650.640.640.630.620.610.610.600.591481458135100.580.580.570.560.550.550.5

3、40.530.530.520803 :6814703110.510.500.500.490.480.480.470.470.460.450 I6926936048120.450.441 10.440.430.420.420.410.410.400.4002604837261130.390.391 0.380.380.370.370.360.360.350.3506161617273140.340.340.340.330.330.320.320.320.310.310 I9406284062150.300.300.300.290.290.290.280.280.280.2708618417417

4、160.270.270.260.260.260.250.250.250.250.2404185296318170.240.240.240.230.230.230.230.220.220.2205307520753180.220.210.210.210.210.200.200.200.200.200 10864197531190.190.190.190.190.190.180.180.180.180.18精心整理0975319864220：0.180.170.170.170.170.170.170.16:0.160.1600975421976210.160.160.160.160.150.150

5、.150.150.150.1504310976432220.150.140.140.140.140.140.140.140.140.130098654311923：0.130.130.130.130.130.130.130.13:0.120.1208765321098240.120.120.120.120.120.120.120.120.110.11076543210982500.117当入250时，=7320/入表2扣件式钢管脚手架的 gki丄0.413 la - h - 0.377 1；!0.259 10h 0.413 la - h - 0.188 lb - 0.372 注：钢管 483.

6、5-3.84kg/m(37.67N/m)直角扣件-1.32kg/个(12.95N/个)对接扣件-1.84kg/个(18.04N/个)安全网、塑料编织布一0.002KN/m钢管横杆、剪刀撑一0.04KN/m席子一0.008KN/R?竹笆一0.05KN/O?h-步距lb-立杆横距la-立杆纵距立杆与纵向水平杆平均长度0.5m。扣件式钢管脚手架作业层面材料自重gk2表3种类板底支撑间 距(m)栏杆设 置gk2,lb(m)为以下时：0.91.21.51.8有0.3580.4110.4630.516竹串片0.757272无0.20870.26120.31370.3662木、其 它1.0有0.34590.

7、34840.45090.5034无0.1950.2980.3000.353中立杆:边立杆:角立杆:侖b.413h+，8咙+|b户.485精心整理注:扣件式钢脚手板0.25KN/m2冲压钢脚手板0.3KN/m2木、竹串片脚手板0.35KN/m2扣件式钢管脚手架整体拉结和防护材料自重gk3表4围护材 料封闭 类型gk3,la(m)为以下时：整体拉结 杆件设置 情况1.21.51.82.1剪刀撑、 增加一道 横杆固定 封闭材料安全网、 塑料编 织布半0.06020.07530.09040.1054全0.06140.07680.09220.1075席子半0.06380.07980.09580.1117

8、全0.06860.08580.10300.1201竹笆半0.08900.11130.13360.1558全0.11900.19880.17860.2083表5Q235 钢钢材的强度设计值与弹性模量抗拉、抗弯f(KN/mm2)抗压fc(KN/mm2)弹性模量E(KN/mm2)0.2050.20522.06疋10表6钢管截面特性I外径(d)壁厚(t)截面积A(cm2)惯性矩I/ 4、(cm)截面模 量W/ 3、(cm)回转半 径i(cm)每米重(kg/m)483.54.8912.195.081.583.84513.04.5213.085.131.703.55作业层施工荷载计算基数-qk表7实用施工

9、 何载标准值(kg/m2)qk，当lb为以下时(KN/n)0.91.21.51.89494冲压钢1.5有0.33310.38560.43810.4906无0.18310.23560.28810.3406精心整理31.351.82.252.720.91.21.51.810.450.60.750.9qoO.45qoO.6qoO.75qoO.9qo表8扣件式钢管脚手架立杆计算长度系数J立杆横距lb(m)连墙件布置2步3跨3步3跨双排架1.051.501.701.301.551.751.551.601.80单排架1.85表9换算长细比脚手架立杆横距(m)脚手架与主体结构连墙点的坚向间距H1(步距 数)

10、2h3h4h1.052520161.303224191.55403024表10rm勺取值或计算式构件类型r m不组合风何载组合风何载受弯构件1.1705轴心受压ifW 1.5607注：SGK=1.5GK即一个计算单元长度(1.51a)内的恒载作用效应标准值SQK=1.5QK即一个计算单元长度(1.51a)内的活荷载作用效应标准值一步一纵距的钢管、扣件重 NGKI( KN)表11立杆纵 距(m)步距(m)1.21.351.501.802.001.20.3510.3660.3800.4110.4311.50.3800.3960.4110.4220.4631.80.4090.4250.4410.47

11、40.4962.00.4290.4450.4620.4950.517脚手架1个立杆纵距的附设构件及物品的重力NGK2( (KN)表12立杆横距(m)立杆纵距(m)脚手架上脚手板铺设层数2层4层6层1.051.21.3722.3603.348r 1.51.7152.95014.1851.82.0583.5405.022精心整理2.02.2863.9335.5801.30P 1.21.5492.7133.8771.51.9363.3914.8471.82.3234.0695.816P 2.02.5814.5216.4621.551.21.7253.0664.4061.52.1563.8325.50

12、81.82.5874.5986.6092.02.8755.1097.3441 个立杆纵距的施工荷载 NQK表13立杆横距(m)立杆纵距(m)均布施工荷载(KN/m2)1.52.03.04.05.01.051.22.52 13.365.046.728.401.53.154.206.308.4010.501.83.785.047.5610.0812.602.04.20 15.608.40r 11.2014.001.301.22.973.965.947.929.901.53.714.957.439.9012.381.84.465.948.9111.8014.852.04.956.609.9013.2

13、016.501.55:1.23.124.566.849.1211.401.54.28 15.708.5511.4014.251.85.136.8410.2613.6817.102.05.707.6011.4015.2019.00格构式压杆 Af (KN)表14立杆横距(m)H1步距h(m)1.201.351.501.802.001.052L 97.75680.87667.52148.49139.731r 372.97958.80848.49134.362 1 27.971464.76952.21742.98830.32124.7141.30292.89976.51163.64145.44737.345376.51162.15951.26436.35729.783469.70556.46546.38832.80826.7431.55286.01870.53258.47541.60534.124370.53257.11047.02833.28927.232462.87650.66441.60529.30223.925注:48 3.5钢管f=205N/mm2格构式压杆的长细比表15脚手架