Q235-A鋼軸心受壓構(gòu)件的穩(wěn)定系數(shù)

1、Q235-A 鋼軸心受壓構(gòu)件的穩(wěn)定系數(shù) 表1012345678901.0000.9970.9950.9920.9890.9870.9840.9810.9790.976100.9740.9710.9680.9660.9630.9600.9580.9550.9520.949200.9470.9440.9410.9380.9360.9330.9300.9270.9240.921300.9180.9150.9120.9090.9060.9030.8990.8960.8930.889400.8860.8820.8790.8750.8720.8680.8640.8610.8580.855500.8520.

2、8490.8460.8430.8390.8360.8320.8290.8250.822600.8180.8140.8100.8060.8020.7970.7930.7890.7840.779700.7750.7700.7650.7600.7550.7500.7440.7390.7330.728800.7220.7160.7100.7040.6980.6920.6860.6800.6730.667900.6610.6540.6480.6410.6340.6250.6180.6110.6030.5951000.5880.5800.5730.5660.5580.5510.5440.5370.5300

3、.5231100.5160.5090.5020.4960.4890.4830.4760.4700.4640.4581200.4520.4460.4400.4340.4280.4230.4170.4120.4060.4011300.3960.3910.3860.3810.3760.3710.3670.3620.3570.3531400.3490.3440.3400.3360.3320.3280.3240.3200.3160.3121500.3080.3060.3010.2980.2940.2910.2870.2840.2810.2771600.2740.2710.2680.2650.2620.2

4、590.2560.2530.2510.2481700.2450.2430.2400.2370.2350.2320.2300.2270.2250.2231800.2200.2180.2160.2140.2110.2090.2070.2050.2030.2011900.1990.1970.1950.1930.1910.1890.1880.1860.1840.1822000.1800.1790.1770.1750.1740.1720.1710.1690.1670.1662100.1640.1630.1610.1600.1590.1570.1560.1540.1530.1522200.1500.149

5、0.1480.1460.1450.1440.1430.1410.1410.1392300.1380.1370.1360.1350.1330.1320.1310.1300.1290.1282400.1270.1260.1250.1240.1230.1220.1210.1200.1190.1182500.1172當(dāng) >250 時, =7320/ 2表 2 扣件式鋼管腳手架的 gk1中立桿：110h0.413 lah0.377 lb0.259 邊立桿：10.413 lah0.188 lb0.372 10h角立桿：10.413 h0.188la lb0.48510 h注：鋼管 48 3.5-3.

6、84kg/m (37.67N/m)直角扣件 - 1.32 kg/ 個 (12.95N/ 個 )對接扣件 - 1.84 kg/ 個 (18.04N/ 個 )安全網(wǎng)、塑料編織布 0.002KN/m2 鋼管橫桿、剪刀撐 0.04KN/m2 2席子 0.008 KN/m 2 竹笆 0.05 KN/m 2h- 步距 lb-立桿橫距 la- 立桿縱距立桿與縱向水平桿平均長度 0.5m?？奂戒摴苣_手架作業(yè)層面材料自重gk2表3種類板底支撐間距(m)欄桿設(shè)置gk 2， lb(m) 為以下時：0.91.21.51.8竹串片0.75有0.35870.41120.46370.5162無0.20870.26120.

7、31370.3662木、其它1.0有0.34590.34840.45090.5034無0.19590.29840.30090.3534沖壓鋼1.5有0.33310.38560.43810.4906無0.18310.23560.28810.3406注:扣件式鋼腳手板0.25KN/m 2沖壓鋼腳手板0.3 KN/m 2木、竹串片腳手板0.35 KN/m 2扣件式鋼管腳手架整體拉結(jié)和防護材料自重 gk3表4圍護材料封閉 類型gk 3 ， la（m）為以下時：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0.06020.07530.090

8、40.1054全0.06140.07680.09220.1075席子半0.06380.07980.09580.1117全0.06860.08580.10300.1201竹笆半0.08900.11130.13360.1558全0.11900.19880.17860.2083表 5 Q235 鋼鋼材的強度設(shè)計值與彈性模量抗拉、抗彎f（ KN/mm 2）抗壓 fc（ KN/mm 2）彈性模量E（ KN/mm 2）0.2050.2052.06 102表 6 鋼管截面特性外徑壁厚截面積慣性矩截面模量回轉(zhuǎn)半徑每米重AIWi（ d）（t）（ cm2）（cm4）（ cm3）（cm）（ kg/m ）483.54

9、.8912.1·95.081.583.84513.04.5213.085.131.703.55作業(yè)層施工荷載計算基數(shù) -qk表7實用施工荷 載標準值 （ kg/m 2）qk,當(dāng) lb 為以下時 （KN/m）0.91.21.51.831.351.82.252.720.91.21.51.810.450.60.750.9q00.45 q00.6 q00.75 q00.9 q0表 8 扣件式鋼管腳手架立桿計算長度系數(shù)立 桿 橫 距 lb (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 換算長細比腳手架立桿橫

10、距(m)腳手架與主體結(jié)構(gòu)連墻點的堅向間距H1(步距數(shù) )2h3h4h1.052520161.303224191.55403024表 10 r 'm的取值或計算式構(gòu)件類型r 'm不組合風(fēng)荷載組合風(fēng)荷載受彎構(gòu)件1.1705 SGK SQKSGK 1.15SQK1.1705軸心受壓1.5607 SGK SQKSGK 1.15SQK1.5607注： SGK= 1.5G K即一個計算單元長度 (1.5la)內(nèi)的恒載作用效應(yīng)標準值SQK= 1.5Q K即一個計算單元長度 (1.5la)內(nèi)的活荷載作用效應(yīng)標準值步一縱距的鋼管、扣件重 NGK1 (KN )表 11立桿縱距(m)步 距 (m)1

11、.21.351.501.802.001.20.3510.3660.3800.4110.4311.50.3800.3960.4110.4220.4631.80.4090.4250.4410.4740.4962.00.4290.4450.4620.4950.517腳手架 1 個立桿縱距的附設(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1.051.21.3722.3603.3481.51.7152.9504.1851.82.0583.5405.0222.02.2863.9335.5801.301.21.5492.7133.8771.5

12、1.9363.3914.8471.82.3234.0695.8162.02.5814.5216.4621.551.21.7253.0664.4061.52.1563.8325.5081.82.5874.5986.6092.02.8755.1097.3441 個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/m 2)1.52.03.04.05.01.051.22.523.365.046.728.401.53.154.206.308.4010.501.83.785.047.5610.0812.602.04.205.608.4011.2014.001.301

13、.22.973.965.947.929.901.53.714.957.439.9012.381.84.465.948.9111.8014.852.04.956.609.9013.2016.501.551.23.124.566.849.1211.401.54.285.708.5511.4014.251.85.136.8410.2613.6817.102.05.707.6011.4015.2019.00格構(gòu)式壓桿 f (KN)表 14立桿橫距(m)H1步 距 h(m)1.201.351.501.802.001.05297.75680.87667.52148.49139.731372.97958.80848.49134.36227.971464.76952.21742.98830.32124.7141.30292.89976.51163.64145.44737.345376.51162.15951.26436.35729.783469.70556.46546.38832.80826.7431.55286.01870.53258.47541.60534.124370.53257.11047.02833.28927.232462.87650.66441.60529.30223.925注 : 48 3.5 鋼管f=205N/mm 2H1b2