轴心受压构件的稳定系数(共14页).doc

精选优质文档-倾情为你奉上附录1 轴心受压构件的稳定系数普通钢构件轴心受压构件的截面类别（按GB50017-2003） 附表1-1截 面 形 式 及 主 轴截面类别板厚40mm轧制工字钢，翼缘宽与截面高之比0.8，对垂直于腹板的轴（轴）类轧制钢管，对任意轴不属于类和类的截面，以及格构式构件的分肢计算垂直于腹板轴的稳定类翼缘为轧制或剪切边焊接工字形截面，对通过或平行于腹板的轴（轴）类焊接T形截面，翼缘为轧制或剪切边，对通过或平行于腹板的轴（轴）焊接十字形截面，板件边缘为轧制或剪切，对轴、轴焊接矩形管截面，板件宽厚比20，对轴、轴板厚40mm不属于类和类的截面类轧制工字钢或H形截面，80mm，对通过或平行于腹板的轴（轴）类轧制工字钢或H形截面，80mm，对垂直于腹板的轴（轴）轧制工字钢或H形截面，80mm，对通过或平行于腹板的轴（轴）类翼缘为轧制或剪切边焊接工字形截面，对垂直于腹板的轴（轴）类翼缘为轧制或剪切边焊接工字形截面，对通过或平行于腹板的轴（轴）类焊接箱形截面，板件宽厚比20，对轴、轴类a类截面轴心受压构件的稳定系数（按GB50017-2003） 附表1-2012345678901020304050607080901001101201301401501601701801902002102202302402501.0000.9950.9810.9630.9410.9160.8830.8390.7830.7140.6380.5630.4940.4340.3830.3390.3020.2700.2430.2200.1990.1820.1660.1530.1410.1301.0000.9940.9790.9610.9390.9130.8790.8340.7760.7060.6300.5550.4880.4290.3780.3350.2980.2670.2410.2180.1980.1800.1650.1520.1401.0000.9930.9770.9590.9370.9100.8750.8290.7700.6990.6220.4480.4810.4230.3730.3310.2950.2640.2380.2150.1960.1790.1640.1500.1391.0000.9920.9760.9570.9340.9070.8710.8240.7630.6910.6150.5410.4750.4180.3690.3270.2920.2620.2360.2130.1940.1770.1620.1490.1380.9990.9910.9740.9550.9320.9040.8670.8180.7570.6840.6070.5340.4690.4120.3640.3230.2890.2590.2330.2110.1920.1750.1610.1480.1360.9990.9890.9720.9520.9290.9000.8630.8130.7500.6760.6000.5270.4630.4070.3600.3200.2850.2560.2310.2090.1900.1740.1590.1470.1350.9980.9880.9700.9500.9270.8970.8580.8070.7430.6680.5920.5200.4570.4020.3560.3160.2820.2530.2290.2070.1890.1720.1580.1460.1340.9980.9860.9680.9480.9240.8940.8540.8010.7360.6610.5850.5140.4510.3970.3510.3120.2790.2510.2260.2050.1870.1710.1570.1440.1330.9970.9850.9660.9460.9210.8900.8490.7950.7280.6530.5770.5070.4450.3920.3470.3090.2760.2480.2240.2030.1850.1690.1550.1430.1320.9960.9830.9640.9440.9190.8860.8440.7890.7210.6450.5700.5000.4400.3870.3430.3050.2730.2460.2220.2010.1830.1680.1540.1420.131b类截面轴心受压构件的稳定系数（按GB50017-2003） 附表1-3012345678901020304050607080901001101201301401501601701801902002102202302402501.0000.9920.9700.9360.8990.8560.8070.7510.6880.6210.5550.4930.4370.3870.3450.3080.2760.2490.2250.2040.1860.1700.1560.1440.1330.1231.0000.9910.9670.9320.8950.8520.8020.7450.6810.6140.5490.4870.4320.3830.3410.3040.2730.2460.2230.2020.1840.1690.1550.1430.1321.0000.9890.9630.9290.8910.8470.7970.7390.6750.6080.5420.4810.4260.3780.3370.3010.2700.2440.2200.2000.1830.1670.1540.1420.1310.9990.9870.9600.9250.8870.8420.7910.7320.6680.6010.5360.4750.4210.3740.3330.2980.2670.2410.2180.1980.1810.1660.1530.1410.1300.9990.9850.9570.9220.8820.8380.7860.7260.6610.5940.5290.4700.4160.3700.3290.2950.2650.2390.2160.1970.1800.1650.1510.1400.1290.9980.9830.9530.9180.8780.8330.7800.7200.6550.5880.5230.4640.4110.3650.3260.2910.2620.2360.2140.1950.1780.1630.1500.1380.1280.9970.9810.9500.9140.8740.8280.7740.7140.6480.5810.5170.4580.4060.3610.3220.2880.2590.2340.2120.1930.1760.1620.1490.1370.1270.9960.9780.9460.9100.8700.8230.7690.7070.6410.5750.5110.4530.4020.3570.3180.2850.2560.2320.2100.1910.1750.1600.1480.1360.1260.9950.9760.9430.9060.8650.8180.7630.7010.6350.5680.5050.4470.3970.3530.3150.2820.2540.2290.2080.1900.1730.1590.1460.1350.1250.9940.9730.9390.9030.8610.8130.7570.6940.6280.5610.4990.4420.3920.3490.3110.2790.2510.2270.2060.1880.1720.1580.1450.1340.124c类截面轴心受压构件的稳定系数（按GB50017-2003） 附表1-4012345678901020304050607080901001101201301401501601701801902002102202302402501.0000.9920.9660.9020.8390.7750.7090.6480.5780.5170.4630.4190.3790.3420.3090.2800.2540.2300.2100.1920.1760.1620.1500.1380.1280.1191.0000.9900.9590.8960.8330.7680.7020.6360.5720.5110.4580.4150.3750.3390.3060.2770.2510.2280.2080.1900.1750.1610.1480.1370.1271.0000.9880.9530.8900.8260.7620.6950.6290.5660.5050.4540.4110.3710.3350.3030.2740.2490.2260.2060.1890.1730.1590.1470.1360.1260.9990.9860.9470.8840.8200.7550.6890.6230.5590.5000.4490.4070.3670.3320.3000.2710.2460.2240.2050.1870.1720.1580.1460.1350.1250.9990.9830.9400.8770.8140.7480.6820.6160.5530.4940.4450.4030.3640.3280.2970.2690.2440.2220.2030.1860.1700.1570.1450.1340.1240.9980.9810.9340.8710.8070.7420.6760.6100.5470.4880.4410.3990.3600.3250.2940.2660.2420.2200.2010.1840.1690.1560.1440.1330.1240.9970.9780.9280.8650.8010.7350.6690.6040.5410.4830.4360.3950.3560.3220.2910.2640.2390.2180.1990.1820.1680.1540.1430.1320.1230.9960.9760.9210.8580.7940.7290.6620.5970.5350.4770.4320.3910.3530.3190.2880.2610.2370.2160.1970.1810.1660.1530.1420.1310.1220.9950.9730.9150.8520.7880.7220.6560.5910.5290.4720.4280.3870.3490.3150.2850.2580.2350.2140.1960.1790.1650.1520.1400.1300.1210.9930.9700.9090.8460.7810.7150.6490.5840.5230.4670.4230.3830.3460.3120.2820.2560.2330.2120.1940.1780.1630.1510.1390.1290.120d类截面轴心受压构件的稳定系数（按GB50017-2003） 附表1-5012345678901020304050607080901001101201301401501601701801902001.0000.9840.9370.8480.7660.6900.6180.5520.4930.4390.3940.3590.3280.2990.2720.2480.2270.2080.1910.1760.1621.0000.9810.9270.8400.7590.6830.6120.5460.4870.4340.3900.3560.3250.2960.2700.2460.2250.2060.1890.1740.9990.9780.9180.8310.7510.6750.6050.5400.4810.4290.3870.3530.3220.2930.2670.2440.2230.2040.1880.1730.9990.9740.9090.8230.7430.6680.5980.5340.4760.4240.3830.3500.3190.2900.2650.2420.2210.2030.1860.1710.9980.9690.9000.8150.7350.6610.5910.5280.4700.4190.3800.3460.3160.2880.2620.2400.2190.2010.1840.1700.9960.9650.8910.8070.7280.6540.5850.5220.4650.4140.3760.3430.3130.2850.2600.2370.2170.1990.1830.1680.9940.9600.8830.7990.7200.6460.5780.5160.4600.4100.3730.3400.3100.2820.2580.2350.2150.1970.1810.1670.9920.9550.8740.7900.7120.6390.5720.5100.4540.4050.3700.3370.3070.2800.2550.2330.2130.1960.1800.1660.9900.9490.8650.7820.7050.6320.5650.5040.4490.4010.3660.3340.3040.2770.2530.2310.2120.1940.1780.1640.9870.9440.8570.7740.6970.6250.5590.4980.4440.3970.3630.3310.3010.2750.2510.2290.2100.1920.1770.163Q235钢冷弯薄壁型钢轴心受压构件的稳定系数（按50018-2002） 附表1-6012345678901020304050607080901001101201301401501601701801902002102202302402501.0000.9740.9470.9180.8860.8520.8180.7750.7220.6610.5880.5160.4520.3960.3490.3080.2740.2450.2200.1990.1800.1640.1500.1380.1270.1170.9970.9710.9440.9150.8820.8490.8140.7700.7160.6540.5800.5090.4460.3910.3440.3050.2710.2130.2180.1970.1790.1630.1490.1370.1260.9950.9680.9410.9120.8790.8460.8100.7650.7100.6480.5730.5020.4400.3860.3400.3010.2680.2400.2160.1950.1770.1610.1480.1360.1250.9920.9660.9380.9090.8750.8430.8060.7600.7040.6410.5660.4960.4340.3810.3360.2980.2650.2370.2140.1930.1750.1600.1460.1350.1240.9890.9630.9360.9060.8720.8390.8020.7550.6980.6340.5580.4890.4280.3760.3320.2940.2620.2350.2110.1910.1740.1590.1450.1330.1230.9870.9600.9330.9030.8680.8360.7970.7500.6920.6260.5510.4830.4230.3710.3280.2910.2590.2320.2090.1890.1720.1570.1440.1320.1220.9840.9580.9300.8990.8640.8320.7930.7440.6860.6180.5440.4760.4170.3670.3240.2870.2560.2300.2070.1880.1710.1560.1430.1310.1210.9810.9550.9270.8960.8610.8290.7890.7390.6800.6110.5370.4700.4120.3620.3200.2840.2530.2270.2050.1860.1690.1540.1410.1300.1200.9790.9520.9240.8930.8580.8250.7840.7330.6730.6030.5300.4640.4060.3570.3160.2810.2510.2250.2030.1840.1670.1530.1400.1290.1190.9760.9490.9210.8890.8550.8220.7790.7280.6670.5950.5230.4580.4010.3530.3120.2770.2480.2230.2010.1820.1660.1520.1390.1280.118Q345钢冷弯薄壁型钢轴心受压构件的稳定系数（按50018-2002） 附表1-7012345678901020304050607080901001101201301401501601701801902002102202302402501.0000.9710.9400.9060.8670.8290.7770.7100.6320.5500.4750.4050.3470.3000.2610.2290.2030.1810.1620.1460.1320.1200.1090.1000.0920.0850.9970.9680.9370.9020.8640.8240.7710.7030.6230.5420.4670.3980.3420.2960.2580.2270.2010.1790.1600.1440.1300.1190.1080.0990.0910.9940.9650.9340.8980.8600.8190.7650.6950.6150.5350.4600.3920.3370.2920.2550.2240.1980.1770.1580.1430.1290.1180.1070.0980.0910.9910.9620.9300.8940.8570.8150.7590.6880.6070.5270.4520.3860.3320.2880.2510.2210.1960.1750.1570.1410.1280.1160.1060.0980.0900.9880.9590.9270.8900.8530.8100.7520.6800.5990.5190.4450.3800.3270.2840.2480.2180.1940.1730.1550.1400.1270.1150.1060.0970.0890.9850.9560.9240.8860.8490.8050.7460.6720.5910.5120.4380.3750.3220.2800.2450.2160.1910.1710.1530.1380.1260.1140.1050.0960.0880.9820.9520.9200.8820.8450.8000.7390.6640.5830.5040.4310.3690.3180.2760.2420.2130.1890.1690.1520.1370.1240.1130.1040.0950.0880.9790.9490.9170.8780.8410.7940.7320.6560.5740.4970.4240.3630.3130.2720.2380.2100.1870.1670.1500.1360.1230.1120.1030.0940.0870.9760.9460.9130.8740.8370.7890.7250.6480.5660.4890.4180.3580.3090.2690.2350.2080.1850.1650.1490.1340.1220.1110.1020.0940.0860.9730.9430.9090.8700.8330.7830.7180.6400.5580.4820.4110.3520.3040.2650.2320.2050.1830.1630.1470.1330.1210.1100.1010.0930.086附录2 普通受弯钢构件稳定系数一、焊接工字形和轧制H型钢等截面简支梁焊接工字形和轧制H型钢等截面简支梁的整体稳定系数应按下式计算： （附2-1）式中 梁整体稳定等效弯矩系数，根据荷载的形式和作用位置按附表2-1选用；梁的侧向长细比，； 梁的侧向计算长度，取受压翼缘侧向支承点间的距离； 梁毛截面对轴的回转半径； 梁的毛截面面积； 梁的截面高度； 梁受压翼缘边缘纤维的毛截面抵抗矩；钢材的屈服强度； 截面不对称影响系数：双轴对称焊接工字形截面（附图2-1a、d）的=0； 单轴对称焊接工字形截面：加强受压翼缘（附图2-1b）， 加强受拉翼缘（附图2-1c）的； 受压翼缘与全截面侧向惯性矩比值，；、受压翼缘和受拉翼缘对轴的惯性矩。当按式（附2-1）计算得到的0.6时，应按式（附2-2）对进行修正，以代替。 且1.0 （附2-2）附图2-1 焊接工字形和轧制H型钢截面H型钢和等截面焊接工字形简支梁的系数 附表2-1项次侧 向 支 承荷 载适应范围2.02.01跨中无侧向支承均布荷载作用在上翼缘0.95图3-1a、b、d的截面2下翼缘1.333集中荷载作用在上翼缘1.094下翼缘1.675跨度中点有一个侧向支承点均布荷载作用在上翼缘1.15图3-1中的所有截面6下翼缘1.407集中荷载作用在截面上任意处1.758跨中有不少于两个等距离侧向支承点任意荷载作用在上翼缘1.209下翼缘1.4010梁端有弯矩，跨中无荷载作用注：1.、为梁侧向支承点间的端弯矩，使梁产生同向曲率时取同号，反向曲率时取异号，且。 2.项次3、4、7指一个或少数几个集中荷载位于跨中央附近，其它情况的集中荷载应按项次1、2、5、6内的数值采用。 3.表中项次8、9的，当集中荷载作用在侧向支承点处时，取。 4.荷载作用在上翼缘是指荷载作用点在翼缘表面，方向指向截面形心；荷载作用在下翼缘是指荷载作用点在翼缘表面，方向背向截面形心 3.当0.8和满足以下情况时应乘以系数：项次1，当1.0时，乘以0.95；项次3，当0.5时，乘以0.90；当0.51.0时，乘以0.95.式（附2-1）也可用于等截面铆接（或高强度螺栓连接）简支梁，其受压翼缘厚度包括翼缘角钢厚度在内。二、轧制普通工字钢简支梁轧制普通工字钢简支梁的整体稳定系数按附表2-2选用，如计算得到的0.6时，应按式（附2-2）对进行修正，以代替。三、普通轧制槽钢简支梁普通轧制槽钢简支梁的整体稳定系数，不论荷载的形式和荷载作用在截面上的位置，均可按式（附2-3）计算，如计算得到的0.6时，应按式（附2-2）对进行修正，以代替。 （附2-3）式中 、分别为槽钢截面的宽度、翼缘厚度和截面高度。普通轧制工字钢简支梁的稳定系数 附表2-2项次荷载情况工字钢型号自 由 长 度 (m)23456789101跨中无侧向支承点的梁集中荷载作用于上翼缘1020223236632.002.402.801.301.481.600.991.091.070.800.860.830.680.720.680.580.620.560.530.540.500.480.490.450.430.450.402下翼缘1020224045633.105.507.301.952.803.601.341.842.301.011.371.620.821.071.200.690.860.960.630.730.800.570.640.690.520.560.603均布荷载作用于上翼缘1020224045631.702.102.601.121.301.450.840.930.970.680.730.730.570.600.590.500.510.500.450.450.440.410.400.380.370.360.354下翼缘1020224045632.504.005.601.552.202.801.081.45