Q235-A鋼軸心受壓構(gòu)件的穩(wěn)定系數(shù)

1、精心整理Q235-A 鋼軸心受壓構(gòu)件的穩(wěn)定系數(shù)$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當(dāng)入250時(shí)，=7320/入表2扣件式鋼管腳手架的 gki丄0.413 la - h - 0.377 1；!0.259 10h 0.413 la - h - 0.188 lb - 0.372 注：鋼管 483.

6、5-3.84kg/m(37.67N/m)直角扣件-1.32kg/個(gè)(12.95N/個(gè))對(duì)接扣件-1.84kg/個(gè)(18.04N/個(gè))安全網(wǎng)、塑料編織布一0.002KN/m鋼管橫桿、剪刀撐一0.04KN/m席子一0.008KN/R?竹笆一0.05KN/O?h-步距l(xiāng)b-立桿橫距l(xiāng)a-立桿縱距立桿與縱向水平桿平均長(zhǎng)度0.5m?？奂戒摴苣_手架作業(yè)層面材料自重gk2表3種類(lèi)板底支撐間 距(m)欄桿設(shè) 置gk2,lb(m)為以下時(shí)：0.91.21.51.8有0.3580.4110.4630.516竹串片0.757272無(wú)0.20870.26120.31370.3662木、其 它1.0有0.34590.

7、34840.45090.5034無(wú)0.1950.2980.3000.353中立桿:邊立桿:角立桿:侖b.413h+，8嚨+|b戶.485精心整理注:扣件式鋼腳手板0.25KN/m2沖壓鋼腳手板0.3KN/m2木、竹串片腳手板0.35KN/m2扣件式鋼管腳手架整體拉結(jié)和防護(hù)材料自重gk3表4圍護(hù)材 料封閉 類(lèi)型gk3,la(m)為以下時(shí)：整體拉結(jié) 桿件設(shè)置 情況1.21.51.82.1剪刀撐、 增加一道 橫桿固定 封閉材料安全網(wǎng)、 塑料編 織布半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 鋼鋼材的強(qiáng)度設(shè)計(jì)值與彈性模量抗拉、抗彎f(KN/mm2)抗壓fc(KN/mm2)彈性模量E(KN/mm2)0.2050.20522.06疋10表6鋼管截面特性I外徑(d)壁厚(t)截面積A(cm2)慣性矩I/ 4、(cm)截面模 量W/ 3、(cm)回轉(zhuǎn)半 徑i(cm)每米重(kg/m)483.54.8912.195.081.583.84513.04.5213.085.131.703.55作業(yè)層施工荷載計(jì)算基數(shù)-qk表7實(shí)用施工

9、 何載標(biāo)準(zhǔn)值(kg/m2)qk，當(dāng)lb為以下時(shí)(KN/n)0.91.21.51.89494沖壓鋼1.5有0.33310.38560.43810.4906無(wú)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扣件式鋼管腳手架立桿計(jì)算長(zhǎng)度系數(shù)J立桿橫距l(xiāng)b(m)連墻件布置2步3跨3步3跨雙排架1.051.501.701.301.551.751.551.601.80單排架1.85表9換算長(zhǎng)細(xì)比腳手架立桿橫距(m)腳手架與主體結(jié)構(gòu)連墻點(diǎn)的堅(jiān)向間距H1(步距 數(shù))

10、2h3h4h1.052520161.303224191.55403024表10rm勺取值或計(jì)算式構(gòu)件類(lèi)型r m不組合風(fēng)何載組合風(fēng)何載受彎構(gòu)件1.1705軸心受壓ifW 1.5607注：SGK=1.5GK即一個(gè)計(jì)算單元長(zhǎng)度(1.51a)內(nèi)的恒載作用效應(yīng)標(biāo)準(zhǔn)值SQK=1.5QK即一個(gè)計(jì)算單元長(zhǎng)度(1.51a)內(nèi)的活荷載作用效應(yīng)標(biāo)準(zhǔn)值一步一縱距的鋼管、扣件重 NGKI( KN)表11立桿縱 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腳手架1個(gè)立桿縱距的附設(shè)構(gòu)件及物品的重力NGK2( (KN)表12立桿橫距(m)立桿縱距(m)腳手架上腳手板鋪設(shè)層數(shù)2層4層6層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 個(gè)立桿縱距的施工荷載 NQK表13立桿橫距(m)立桿縱距(m)均布施工荷載(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格構(gòu)式壓桿 Af (KN)表14立桿橫距(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鋼管f=205N/mm2格構(gòu)式壓桿的長(zhǎng)細(xì)比表15腳手架