q3a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1012345678901.00.90.90.90.90.90.90.90.90.900979592898784817976100.90.90.90.90.90.90.90.90.90.974716866636058555249200.90.90.90.90.90.90.90.90.90.947444138363330272421300.90.90.90.90.90.90.80.80.80.818151209060399969389400.80.80.80.80.80.80.80.80.80.886827975726864615855500.80.80

2、.80.80.80.80.80.80.80.852494643393632292522600.80.80.80.80.80.70.70.70.70.718141006029793898479700.70.70.70.70.70.70.70.70.70.775706560555044393328800.70.70.70.70.60.60.60.60.60.622161004989286807367900.60.60.60.60.60.60.60.60.60.561544841342518110395100.50.50.50.50.50.50.50.50.50.508880736658514437

3、3023110.50.50.50.40.40.40.40.40.40.4016090296898376706458120.40.40.40.40.40.40.40.40.40.4052464034282317120601130.30.30.30.30.30.30.30.30.30.3096918681767167625753140.30.30.30.30.30.30.30.30.30.3049444036322824201612150.30.30.30.20.20.20.20.20.20.2008060198949187848177160.20.20.20.20.20.20.20.20.20.

4、2074716865625956535148170.20.20.20.20.20.20.20.20.20.2045434037353230272523180.20.20.20.20.20.20.20.20.20.2020181614110907050301190.10.10.10.10.10.10.10.10.10.1099979593918988868482200.10.10.10.10.10.10.10.10.10.1080797775747271696766210.10.10.10.10.10.10.10.10.10.1064636160595756545352220.10.10.10.

5、10.10.10.10.10.10.1050494846454443414139230.10.10.10.10.10.10.10.10.10.1038373635333231302928240.10.10.10.10.10.10.10.10.10.1027262524232221201918250.1017當 250 時, =7320/ 2中立桿：1 0.413 la h 0.377 lb 0.259 10 h邊立桿：1 0.413 la h 0.188 lb 0.372 10 h表2gk1角立桿：101h 0.413h 0.188 la lb 0.485扣件式鋼管腳手架的注：鋼管 48 3.

6、5-3.84kg/m (37.67N/m)直角扣件 -1.32 kg/ 個 (12.95N/ 個)0.04KN/m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2 2席子 0.008 KN/m2 竹笆 0.05 KN/m2h- 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。扣件式鋼管腳手架作業(yè)層面材料自重 gk2表3種類板底支撐間 距 (m)欄桿設(shè)置gk2，l b(m) 為以下時：0.91.21.51.80.350.410.460.51竹串片0.75有871237620.200.260.310.3

7、6無871237620.340.340.450.50有木、其1.059840934它無0.190.290.300.35598409340.330.380.430.49有沖壓鋼1.531568106無0.180.230.280.3431568106沖壓鋼腳手板0.3 KN/m木、竹串片腳手板0.35 KN/m注: 扣件式鋼腳手板 0.25KN/m扣件式鋼管腳手架整體拉結(jié)和防護材料自重 gk3表4整體拉結(jié)圍護材封閉gk3， la(m) 為以下時：桿件設(shè)置料類型情況1.21.51.82.1安全半0.060.070.0900.105網(wǎng)、塑半025344料編全0.060.070.0920.107織布14

8、6825剪刀撐、半0.060.070.0950.111增加一道席子半389887橫桿固定0.060.080.1030.120封閉材料全8658010.080.110.1330.155竹笆半901368全0.110.190.1780.208908863表 5Q235鋼鋼材的強度設(shè)計值與彈性模量抗拉、抗彎抗壓彈性模量f （ KN/mm2 ）fc （ KN/mm2）E（ KN/mm2）0.2050.20522.06 102表 6 鋼管截面特性外徑（d）壁 厚 （t）截面 積A（cm2）慣性矩I（cm4）截面模 量W （cm3）回轉(zhuǎn)半徑i（cm）每米重（kg/m）483.54.8912.195.081

9、.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2 值（kg/m2）qk, 當 l b 為以下時 （KN/m）0.91.21.51.831.351.82.252.720.91.21.51.810.450.60.750.9q00.45 q 00.6 q 00.75 q 00.9 q 0表 8 扣件式鋼管腳手架立桿計算長度系數(shù)立 桿 橫 距 l 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 換算長細比腳手架立桿橫距 (m)腳手架與

10、主體結(jié)構(gòu)連墻點的堅向間距 H1( 步距數(shù))2h3h4h1.052520161.303224191.55403024表 10r 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軸心受壓1.5607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)1.21.351.501.802.001.20.3510.3660.3800.4110.4311.50.3800.3960.4110.42

11、20.4631.80.4090.4250.4410.4740.4962.00.4290.4450.4620.4950.517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1.051.21.3722.3603.3481.51.7152.9504.1851.82.0583.5405.0222.02.2863.9335.5801.301.21.5492.7133.8771.51.9363.3914.8471.82.3234.0695.8162.02.5814.5216.4621.551.21.7253.0664.4

12、061.52.1563.8325.5081.82.5874.5986.6092.02.8755.1097.3441 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/m2)1.52.03.04.05.01.22.523.365.046.728.4010.51.53.154.206.308.4001.051.83.785.047.5610.012.68011.214.02.04.205.608.40001.22.973.965.947.929.9012.31.53.714.957.439.9081.301.84.465.948.9111.814.80513.2

13、16.52.04.956.609.90001.23.124.566.849.1211.4011.414.21.551.54.285.708.550510.213.617.11.85.136.8468011.415.219.02.05.707.60000格構(gòu)式壓桿 f (KN)表 14立桿橫 距 (m)H1步 距 h(m)1.201.351.501.802.0097.7580.8767.5248.4939.7326611172.9758.8048.4934.3627.971.0539812164.7652.2142.9830.3224.7149781492.8976.5163.6445.4437.3421.3091175376.5162.1551.2636.3529.781947369.7056.4646.3832.8026.7445588386.0170.5358.4741.6034.1228255470.5357.1147.0233.2827.231.5532089262.8750.6641.6029.3023.924645252注 : 48 3.5 鋼管f=205N/mm格構(gòu)式壓桿的長細比表