表B 鋼管截面特性
外徑φ，d (mm)壁厚
t(mm)
截面積
A(cm2)
慣性矩
I(cm4)
截面模量
W(cm3)
回轉(zhuǎn)半徑
i(cm)
每米長質(zhì)
量(kg/m)
48 3.5 4.8912.19 5.08 1.58 3.84
513 4.5213.08 5.13 1.7 3.55
表C 穩(wěn)定
系數(shù)φ表
λ01234567 010.9970.9950.9920.9890.9870.9840.981 100.9740.9710.9680.9660.9630.960.9580.955 200.9470.9440.9410.9380.9360.9330.930.927 300.9180.9150.9120.9090.9060.9030.8990.896 400.8860.8820.8790.8750.8720.8680.8640.861
500.8520.8490.8460.8430.8390.8360.8320.829
600.8180.8140.810.8060.8020.7970.7930.789 700.7750.770.7650.760.7550.750.7440.739 800.7220.7160.710.7040.6980.6920.6860.68 900.6610.6540.6480.6410.6340.6260.6180.611 1000.
5880.580.5730.5660.5580.5510.5440.537 1100.5160.5090.5020.4960.4890.4830.4760.47 1200.4520.4460.440.4340.4280.4230.4170.412 1300.3960.3910.3860.3810.3760.3710.3670.362 1400.3490.3440.340.3360.3320.3280.3240.32 1500.3080.3050.3010.2980.2940.2910.2870.284 1600.2740.2710.2680.2650.2620.2590.2560.253 1700.2450.2430.240.2370.2350.2320.230.227 1800.220.2180.2160.2140.2110.2090.2070.205 1900.1990.1970.1950.1930.1910.1890.1880.186 2000.180.1790.1770.1750.1740.1720.1710.169 2100.1640.1630.1610.160.1590.1570.1560.154 2200.150.1490.1480.1460.1450.1440.1430.141 2300.1380.1370.1360.1350.1330.1320.1310.13 2400.1270.1260.1250.1240.1230.1220.1210.12
2500.117
當(dāng)λ＞
250時，
φ=7320/
λ2
λ=l0 /?173.3781
E26E26
A26E8
1731703 89
0.9790.976
0.9520.949
0.9240.921
0.8930.889
0.8580.855
0.8250.822立桿穩(wěn)定系數(shù)取值
0.7840.7790.237
0.7330.728
0.6730.667
0.6030.595
0.530.523
0.4640.458
0.4060.401λ=l0 /?173.5
0.3570.353
0.3160.312F26F26
0.2810.277A26F8
0.2510.248
0.2250.2231741704 0.2030.201
0.1840.182
0.1670.166
0.1530.152
0.140.139
0.1290.128
0.1190.118立桿穩(wěn)定
系數(shù)取值
0.235
夾板模塊支架計算
梁板模板支架計算
