GBT 706-2008 工字钢、槽钢、角钢、H型钢截面特性表★★

关于发布实施GB/T 706-2008《热轧型钢》的通知从2009年5月1日起，我厂开始实施新标准GB/T 706-2008《热轧型钢》。

新标准将代替GB/T 706-1988《热轧工字钢尺寸、外形、重量及允许偏差》、GB/T707-1988《热轧槽钢尺寸、外形、重量及允许偏差》、GB/T9787-1988《热轧等边角钢尺寸、外形、重量及允许偏差》、GB/T 9788-1988《热轧不等边角钢尺寸、外形、重量及允许偏差》、GB/T9946-1988《热轧L型钢尺寸、外形、重量及允许偏差》以及2004技（质标）字第17号，各单位要严格执行新标准规定，并将在执行中发现的问题及时反馈技术科。

GB/T 706-2008与GB/T 9787-1988、GB/T 9788-1988、GB/T 707-1988及2004技（质标）字第17号相比，与我厂轧区有关的主要变化和注意事项如下：（1）热轧等边角钢和不等边角钢增加了部分规格：100mm×100mm×9mm 等边角钢，100mm×100mm×16mm等边角钢，150mm×150mm×8mm等边角钢，150mm×90mm×8mm不等边角钢；（2）调整了部分尺寸、外形允许偏差，新老标准对比见表1和表2项目边宽度内圆弧半径顶端直角允许偏差弯曲度xx允许偏差老标准新标准15#等边角钢±3.0mm15#等边角钢±2.5mm不等边角钢±3.0mm不等边角钢±2.5mm15#等边角钢r=16mm±35´15#等边角钢r=14mm±50´每米弯曲度≤4mm每米弯曲度≤3mm总弯曲度≤总长度的0.4%总弯曲度≤总长度的0.3%0+50mm≤8000mm＞8000mm00+50+80mm（3）统一了型钢的通常长度，即角钢的通常长度为4000mm~19000mm，其它型钢的通常长度为5000mm~19000mm；（4）增加了附录A，各相关单位要认真阅读和严格执行此规范性附录；注：1、新标准GB/T706-2008《热轧型钢》所提到的角钢的相关规定仅适用于除铁塔角钢以外的一般角钢（包括船用角钢）；2、铁塔用角钢仍然执行GB/T 9787-1988《热轧等边角钢尺寸、外形、重量及允许偏差》和YB/T 4163-2007《铁塔用热轧角钢》相关标准规定，切勿混淆。

按照截面积大体相近，并且饶X轴的抗弯强度不低于相应工字钢的原则，计算出了标准中H型钢有关型号与GB/T706-88〈热轧工字钢尺寸、外形、重量及允许偏差〉〉中的工字钢的有关型号以及他们的性能参数比较表（见表Ｂ１），以供有关人员在使用Ｈ型钢替代工字钢时参考。

表Ｂ１Ｈ型钢与工字钢型号及性能参数比较表工字钢型号Ｈ型钢型号Ｈ型钢与工字钢性能参数比较工字钢型号Ｈ型钢型号Ｈ型钢与工字钢性能参数比较横截面积抗弯强度抗剪强度抗弯刚度惯性半径横截面积抗弯强度抗剪强度抗弯刚度惯性半径ix iy ix iyI10 H125×60 1.19 1.36 1.63 1.70 1.20 0.86 I40a H400×2000.98 1.09 0.79 1.09 1.06 1.64 I12..6 H150×75 1.00 1.17 1.19 1.39 1.18 1.02 H450×1500.97 1.11 0.97 1.25 1.13 1.11 I14 H175×90 1.08 1.37 1.15 1.71 1.26 1.18 H446×1990.99 1.20 0.88 1.34 1.16 1.56 I16 H175×900.89 0.99 0.92 1.08 1.10 1.08 I40b H400×2000.89 1.04 0.67 1.04 1.08 1.68 H198×990.90 1.16 0.95 1.43 1.26 1.16 H450×1500.89 1.06 0.83 1.19 1.15 1.14 H200×100 1.06 1.33 1.16 1.67 1.25 1.17 H446×1990.90 1.14 0.75 1.27 1.19 1.59 I18 H200×1000.90 1.01 0.95 1.13 1.12 1.11 H450×200 1.04 1.32 0.85 1.48 1.19 1.621H248×124 1.07 1.55 1.09 2.13 1.41 1.39 H500×150 1.04 1.35 1.01 1.69 1.27 1.12 I20a H248×1240.93 1.21 0.91 1.50 1.28 1.31 I40c H400×2000.82 0.99 0.59 0.99 1.11 1.71 H250×125 1.07 1.38 1.09 1.72 1.28 1.32 H450×1500.82 1.01 0.72 1.14 1.18 1.15 I20b H248×1240.83 1.15 0.72 1.42 1.31 1.35 H446×1990.83 1.09 0.65 1.22 1.22 1.63 H250×1250.96 1.30 0.86 1.63 1.31 1.35 H450×2000.95 1.26 0.74 1.41 1.22 1.65 I22a H250×1250.90 1.05 0.92 1.20 1.16 1.21 H500×1500.96 1.29 0.89 1.61 1.30 1.15 H298×1490.99 1.40 1.02 1.90 1.38 1.41 H496×1990.99 1.42 0.81 1.76 1.34 1.61 I22b H250×1250.81 1.00 0.74 1.14 1.18 1.23 I45a H450×2000.95 1.05 0.81 1.05 1.05 1.52 H298×1490.89 1.33 0.82 1.80 1.41 1.44 H500×1500.96 1.07 0.97 1.19 1.02 1.05 H300×150 1.02 1.50 0.96 2.05 1.41 1.44 H496×1990.99 1.18 0.89 1.30 1.15 1.48 I25a H298×1490.86 1.08 0.84 1.29 1.22 1.36 I45b H450×2000.87 1.00 0.70 1.00 1.07 1.54 H300×1500.98 1.22 0.99 1.47 1.22 1.36 H500×1500.88 1.03 0.84 1.14 1.14 1.07 I25b H298×1490.78 1.03 0.68 1.22 1.25 1.36 H496×1990.91 1.13 0.75 1.24 1.17 1.50 H300×1500.89 1.16 0.81 1.39 1.25 1.36 H500×200 1.03 1.28 0.86 1.42 1.18 1.522H346×1740.99 1.54 0.87 2.12 1.46 1.61 I45c H450×2000.81 1.03 0.67 0.96 1.09 1.57 I28a H346×1740.96 1.28 0.90 1.57 1.28 1.54 H500×1500.82 1.05 0.80 1.09 1.16 1.09 I28b H346×1740.87 1.21 0.74 1.50 1.31 1.55 H496×1990.84 1.16 0.73 1.19 1.19 1.53 H350×175 1.04 1.46 0.87 1.83 1.32 1.58 H500×2000.95 1.31 0.82 1.35 1.20 1.55 I32a H350×1750.95 1.13 0.83 1.24 1.15 1.50 H596×199 1.01 1.59 0.97 1.96 1.40 1.45 I32b H350×1750.87 1.08 0.70 1.18 1.17 1.51 I50a H500×2000.96 1.03 0.86 1.03 1.04 1.41 H400×150 0.97 1.30 0.89 1.62 1.29 1.23 H596×199 1.02 1.25 1.01 1.49 1.21 1.32 H396×1990.98 1.39 0.79 1.72 1.33 1.72 I50b H506×201 1.02 1.07 0.83 1.16 1.07 1.47 I32c H350×1750.80 1.03 0.60 1.13 1.20 1.51 H596×1990.94 1.20 0.88 1.43 1.23 1.34 H400×1500.89 1.24 0.77 1.54 1.33 1.23 H600×200 1.05 1.25 0.97 1.61 1.24 1.37 H396×1990.90 1.33 0.68 1.64 1.36 1.72 I50c H500×2000.82 1.02 0.71 0.94 1.08 1.46 I36a H400×1500.93 1.07 0.90 1.19 1.13 1.19 H506×2010.94 1.10 0.79 1.12 1.09 1.50 H396×1990.94 1.15 0.80 1.27 1.16 1.67 H596×1990.87 1.23 0.84 1.37 1.26 1.36 I36b H400×1500.85 1.02 0.76 1.13 1.16 1.22 H600×2000.97 1.29 0.93 1.54 1.27 1.393H396×1990.86 1.10 0.68 1.21 1.18 1.70 I56a H596×1990.90 0.99 0.87 1.06 1.09 1.27 H400×200 1.01 1.29 0.78 1.43 1.19 1.72 H600×200 1.00 1.04 0.96 1.19 1.10 1.29 H450×150 1.00 1.31 0.96 1.64 1.28 1.17 I56b H606×201 1.05 1.14 0.92 1.33 1.13 1.33 H446×199 1.02 1.41 0.86 1.75 1.31 1.63 I56c H600×2000.86 1.02 0.81 1.09 1.13 1.30 I36c H396×1990.79 1.05 0.59 1.15 1.21 1.72 H606×2010.97 1.18 0.89 1.27 1.15 1.33 H400×2000.93 1.23 0.68 1.37 1.22 1.75 I63a H582×300 1.13 1.10 0.89 1.10 0.99 2.00 H450×1500.92 1.25 0.83 1.56 1.30 1.18 I63b H582×300 1.04 1.05 0.78 1.05 1.00 2.02 H446×1990.94 1.35 0.75 1.67 1.34 1.66 I63c H582×3000.97 1.09 0.76 1.01 1.02 2.03热轧普通工字钢型号H B d t A Iy(mm4) Ix(mm4)普工10 100 68 4.5 7.6 1433 328000 2450000普工12.6 126 74 5 8.4 1810 4690004880000普工14 140 80 5.5 9.1 2150 643000 7120000普工16 160 88 6 9.9 2611 931000普工18 180 94 6.5 10.7 3074 1229000普工20a 200 100 7 11.4 3555 1579000普工20b 200 102 9 11.4 3955 1690000普工22a 220 110 7.5 12.3 4210 22590004普工22b 220 112 9.5 12.3 4650 2402000普工25a 250 116 8 13 4851 2804000普工25b 250 118 10 13 5351 2973000普工28a 280 122 8.5 13.7 5537 3441000普工28b 280 124 10.5 13.7 6097 3638000普工32a 320 130 9.5 15 6712 4590000 0普工32b 320 132 11.5 15 7352 4838000 0普工32c 320 134 13.5 15 7992 5101000 0普工36a 360 136 10 15.8 7644 5549000 0普工36b 360 138 12 15.8 8364 5836000 0普工36c 360 140 14 15.8 9084 6140000 0普工40a 400 142 10.5 16.5 8607 6599000 0普工40b 400 144 12.5 16.5 9407 6928000 0普工40c 400 146 14.5 16.5 10207 7275000 0普工45a 450 150 11.5 18 10240 8550000 0普工45b 450 152 13.5 18 11140 8954000 0普工45c 450 154 15.5 18 12040 9380000 0普工50a 500 158 12 20 11925 0普工50b 500 160 14 20 12925 0普工50c 500 162 16 20 13925 0普工56a 560 166 12.5 21 13538 0普工56b 560 168 14.5 21 14658 0普工56c 560 170 16.5 21 15778 0普工63a 630 176 13 22 15459 0普工63b 630 178 15 22 16719 0普工63c 630 180 17 22 17979 005其中: H--高度(mm) B--翼缘宽(mm)d--腹板厚(mm) t--翼缘平均厚(mm) A--截面面积(mm2)热轧轻型工字钢型号H B d t A Iy(mm4) Ix(mm4)轻工10 100 55 4.5 7.2 1200 179000 1980000 轻工12 120 64 4.8 7.3 1470 279000 3500000 轻工14 140 73 4.9 7.5 1740 419000 5720000 轻工16 160 81 5 7.8 2020 586000 8730000 轻工18 180 90 5.1 8.1 2340 826000轻工18a 180 100 5.1 8.3 2540 1140000轻工20 200 100 5.2 8.4 2680 1150000轻工20a 200 110 5.2 8.6 2890 1550000轻工22 220 110 5.4 8.7 3060 1570000轻工22a 220 120 5.4 8.9 3280 2060000轻工24 240 115 5.6 9.5 3480 1980000轻工24a 240 125 5.6 9.8 3750 2600000轻工27 270 125 6 9.8 4020 2600000轻工27a 270 135 6 10.2 4320 3370000轻工30 300 135 6.5 10.2 4650 3370000轻工30a 300 145 6.5 10.7 4990 4360000轻工33 330 140 7 11.2 5380 4190000轻工36 360 145 7.5 12.3 6190 5160000 06轻工40 400 155 8 13 7140 6660000 0轻工45 450 160 8.6 14.2 8300 8070000 0轻工50 500 170 9.5 15.2 9780 0轻工55 550 180 10.3 16.5 11400 0轻工60 600 190 11.1 17.8 13200 0轻工65 650 200 12 19.2 15300 00轻工70 700 210 13 20.8 17600 00轻工70a 700 210 15 24 20200 00轻工70b 700 210 17.5 28.2 23400 00其中: H--高度(mm) B--翼缘宽(mm)d--腹板厚(mm) t--翼缘平均厚(mm) A--截面面积(mm2)大通高频焊接工字钢型号A(cm2) Iy(cm4) Ix(cm4)100x50x2.3x3.2 535 6.68 90.71100x50x3.2x4.5 741 9.4 122.77100x100x6x8 2104 133.48 369.05120x120x3.2x4.5 1435 129.63 396.84120x120x4.5x6 1926 172.88 515.53150x75x3.2x4.5 1126 31.68 432.11150x100x3.2x4.5 1351 75.04 551.24150x100x4.5x6 1821 100.1 720.99150x150x4.5x6 2421 75.51 1032.21150x150x6x8 3204 98.67 1331.43200x100x3.2x4.5 1511 58.58 1045.92200x100x4.5x6 2046 78.08 1378.62200x100x6x8 2704 133.66 1786.897200x150x3.2x4.5 1961 253.18 1475.97200x150x4.5x6 2646 337.64 1943.34200x150x6x8 3504 450.33 2524.6200x200x6x8 4304 1067 3262.3250x125x3.2x4.5 1896 146.55 2068.56250x125x4.5x6 2571 123.36 2738.6250x125x4.5x8 3052 260.59 3409.75250x125x6x8 3404 260.84 3569.91250x150x3.2x4.5 2121 253.19 2407.62250x150x4.5x6 2871 337.68 31.8521250x150x4.5x8 3453 450.18 3995.6250x150x6x8 3804 450.42 4155.77250x200x6x8 4604 10.6709 5327.47300x150x3.2x4.5 2281 253.2 36.0441300x150x4.5x6 3096 337.72 4785.96300x150x4.5x8 3678 450.22 5976.11300x150x6x8 4104 450.51 6262.44300x200x6x8 4904 1067.18 7968.14350x150x4.5x8 3903 450.25 8416.36350x150x6x8 4404 450.6 8882.11350x175x3.2x4.5 2666 402.05 5757.85350x175x4.5x6 3621 536.19 7661.31350x175x4.5x8 4303 714.84 9586.21350x175x6x8 4804 715.18 10051.96350x200x6x8 5204 1067.27 11221.81其中: 型号--高度(mm)x翼缘宽(mm)x腹板厚(mm)x翼缘平均厚(mm)8热轧H型钢型号 d t g A(cm2) Iy(cm4) Ix(cm4)HW100x100 6 8 10 2190 383 134 HW125x125 6.5 9 10 3031 847 294 HW150x150 7 10 13 4055 1660 546 HW175x175 7.5 11 13 5143 2900 984 HW200x200 8 12 16 6428 4770 1600 HW250x250 9 14 16 9218 10800 3650 HW300x300 10 15 20 12040 20500 6760 HW350x350 12 19 20 17390 40300 13600 HW400x400 13 21 24 21950 66900 22400 HM200x150 6 9 16 3976 2740 508 HM250x175 7 11 16 5624 6120 985 HM300x200 8 12 20 7303 11400 1600 HM350x250 9 14 20 10150 21700 3650 HM400x300 10 16 24 13670 38900 7210 HM450x300 11 18 24 15740 56100 8110 HM500x300 11 18 28 16440 71400 8120 HM600x300 12 20 28 19250 118000 9020 HN200x100 5.5 8 13 2757 1880 134 HN250x125 6 9 13 3787 4080 294 HN300x150 6.5 9 16 4753 7350 508 HN350x175 7 11 16 6366 13700 985 HN400x200 8 13 16 8412 23700 1740 HN450x200 9 14 20 9741 33700 1870 HN500x200 10 16 20 11420 47800 21409HN600x200 11 17 24 13520 78200 2280 HN700x300 13 24 28 23550 201000 10800 HN800x300 14 26 28 26740 292000 11700 HN900x300 16 28 28 30980 411000 12600 HW100×100 6 8 10 2190 383 134HW175×175 7.5 11 13 5143 2900 984HW200×200 8 12 16 6428 4770 1600HW200×200 12 12 16 7228 5030 1700HW250×250 9 14 16 9218 10800 3650HW250×250 14 14 16 10470 11500 3880HW300×300 12 12 20 10830 17000 5520HW300×300 10 15 20 12040 20500 6760HW300×300 15 15 20 13540 21600 7100HW350×350 10 16 20 14600 33300 11200HW350×350 12 19 20 17390 40300 13600HW400×400 15 15 24 17920 49200 16300HW400×400 11 18 24 18760 56400 18900HW400×400 13 21 24 21950 66900 22400HW400×400 18 28 24 29620 93000 31000HW400×400 21 21 24 25150 71100 23800HW400×400 20 35 24 36140 119000 39400HW#200×150 6 9 16 3976 2740 508HW250×175 7 11 16 5624 6120 985HW300×200 8 12 20 7303 11400 1600HW350×250 9 14 20 10150 21700 3650HW400×300 10 16 24 13670 38900 721010HW450×300 11 18 24 15740 56100 8110HW500×300 11 15 28 14640 60800 6770HW500×300 11 18 28 16440 71400 8120HW600×300 12 17 28 17450 103000 7670HW600×300 12 20 28 19250 118000 9020HW600×300 14 23 28 22240 137000 10600HN175×90 5 8 10 2321 1220 97.6 HN#200×100 4.5 7 13 2359 1610 114HN#200×100 5.5 8 13 2757 1880 134HN250×125 5 8 13 3289 3560 255HN250×125 6 9 13 3787 4080 294HN300×150 5.5 8 16 4155 6460 443HN300×150 6.5 9 16 4753 7350 508HN350×175 6 9 16 5319 11200 792HN350×175 7 11 16 6366 13700 985HN400×150 8 13 16 7112 18800 734HN400×200 7 11 16 7216 20000 1450HN400×200 8 13 16 8412 23700 1740HN450×150 9 14 20 8341 27100 793HN450×200 8 12 20 8495 290000 1580HN450×200 9 14 20 9741 33700 1870HN500×150 10 16 20 9823 38500 907HN500×200 9 14 20 10130 41900 1840HN500×200 10 16 20 11420 47800 2140HN500×200 11 19 20 13130 56500 2580HN600×200 10 15 24 12120 69300 198011HN600×200 11 17 24 13520 78200 2280HN600×200 12 20 24 15330 91000 2720HN700×300 13 20 28 21150 172000 9020HN700×300 13 24 28 23550 201000 10800HP200×200 12 12 16 7228 5030 1700HP250×250 11 11 16 8205 8790 2940HP250×250 14 14 16 10470 11500 3880HP300×300 12 12 20 10830 17000 5520HP300×300 10 15 20 12040 20500 6760HP300×300 15 15 20 13540 21600 7110HP350×350 13 13 20 13530 28200 9380HP350×350 16 16 20 16660 35300 11800HP350×350 12 19 20 17390 40300 13600HP350×350 19 19 20 19840 42800 14400HP400×400 15 15 24 17920 49200 16300HP400×400 18 18 24 21520 59900 20000HP400×400 13 21 24 21950 66900 22400HP400×400 18 28 24 29620 93000 31000HP400×400 21 21 24 25150 71100 23800HP400×400 20 35 24 36140 119000 39400其中: 型号--高度(mm)x翼缘宽(mm)d--腹板厚(mm) t--翼缘平均厚(mm) g--重量(kg/m)表1-6 热轧普通工字钢规格及截面特性（GB 706-88）12I——截面惯性矩；W——截面抵抗矩；S——半截面面积矩；t——截面回转半径。

按照截面积大体相近，并且饶X轴的抗弯强度不低于相应工字钢的原则，计算出了标准中H型钢有关型号与GB/T706-88〈热轧工字钢尺寸、外形、重量及允许偏差〉〉中的工字钢的有关型号以及他们的性能参数比较表（见表Ｂ１），以供有关人员在使用Ｈ型钢替代工字钢时参考。

表Ｂ１Ｈ型钢与工字钢型号及性能参数比较表精品文档精品文档精品文档热轧普通工字钢型号H B d t A Iy(mm4) Ix(mm4)普工10 100 68 4.5 7.6 1433 328000 2450000普工12.6 126 74 5 8.4 1810 469000 48普工14 140 80 5.5 9.1 2150 643000 7120000普工16 160 88 6 9.9 2611 93100011270000精品文档普工18 180 94 6.5 10.7 3074 1229000 16690000普工20a 200 100 7 11.4 3555 1579000 23690000普工20b 200 102 9 11.4 3955 1690000 25020000普工22a 220 110 7.5 12.3 4210 2259000 34060000普工22b 220 112 9.5 12.3 4650 2402000 35830000普工25a 250 116 8 13 4851 2804000 50170000普工25b 250 118 10 13 5351 2973000 52780000普工28a 280 122 8.5 13.7 5537 3441000 71150000普工28b 280 124 10.5 13.7 6097 3638000 74810000普工32a 320 130 9.5 15 6712 4590000 110800000普工32b 320 132 11.5 15 7352 4838000 116260000普工32c 320 134 13.5 15 7992 5101000 121730000普工36a 360 136 10 15.8 7644 5549000 157960000精品文档普工36b 360 138 12 15.8 8364 5836000165740000普工36c 360 140 14 15.8 9084 6140000173510000普工40a 400 142 10.5 16.5 8607 6599000217140000普工40b 400 144 12.5 16.5 9407 6928000227810000普工40c 400 146 14.5 16.5 10207 7275000238470000普工45a 450 150 11.5 18 10240 8550000322410000普工45b 450 152 13.5 18 11140 8954000337590000普工45c 450 154 15.5 18 12040 9380000352780000普工50a 500 158 12 20 11925 11215000 46普工50b 500 160 14 20 12925 11714000 48普工50c 500 162 16 20 13925 12239000 50普工56a 560 166 12.5 21 13538 13658000 65普工56b 560 168 14.5 21 14658 14238000 68普工56c 560 170 16.5 21 15778 14848000 71普工63a 630 176 13 22 15459 17024000 94普工63b 630 178 15 22 16719 17707000 98普工63c 630 180 17 22 17979 18424000 10精品文档精品文档其中: H--高度(mm) B--翼缘宽(mm) d--腹板厚(mm) t--翼缘平均厚(mm)A--截面面积(mm2)热轧轻型工字钢型号 H B dt A Iy(mm4) Ix(mm4) 轻工10 100 55 4.5 7.2 1200 179000 1980000 轻工12 120 64 4.8 7.3 1470 279000 3500000 轻工14 140 73 4.9 7.5 1740 419000 5720000 轻工16 160 81 5 7.8 2020 586000 8730000 轻工18 180 90 5.1 8.1 2340 826000 12900000 轻工18a 180 100 5.1 8.3 2540 1140000 14300000 轻工20 200 100 5.2 8.4 2680 1150000 18400000 轻工20a 200 110 5.2 8.6 2890 1550000 20300000 轻工22 220 110 5.4 8.7 3060 1570000 25500000 轻工22a 220 120 5.4 8.9 3280 2060000 27900000 轻工24 240 1155.69.53480198000034600000轻工24a 240 125 5.6 9.8 3750 260000038000000轻工27 270 125 6 9.8 4020 260000050100000轻工27a 270 135 6 10.2 4320 337000055000000轻工30 300 135 6.5 10.2 4650 337000070800000轻工30a 300 145 6.5 10.7 4990 436000077800000轻工33 330 140 7 11.2 5380 419000098400000轻工36 360 145 7.5 12.3 6190 5160000133800000轻工40 400 155 8 13 7140 6660000189300000轻工45 450 160 8.6 14.2 8300 8070000274500000轻工50 500 170 9.5 15.2 9780 10400000 39轻工55 550 180 10.3 16.5 11400 13500000 55轻工60 600 190 11.1 17.8 13200 17200000 75轻工65 650 200 12 19.2 15300 21700000 10轻工70 700 210 13 20.8 17600 27300000 13轻工70a 700 210 15 24 20200 32400000 15轻工70b 700 210 17.5 28.2 23400 39100000 17精品文档其中: H--高度(mm) B--翼缘宽(mm)d--腹板厚(mm) t--翼缘平均厚(mm) A--截面面积(mm2)大通高频焊接工字钢型号A(cm2) Iy(cm4) Ix(cm4)100x50x2.3x3.2 535 6.68 90.71100x50x3.2x4.5 741 9.4 122.77100x100x6x8 2104 133.48 369.05120x120x3.2x4.5 1435 129.63 396.84120x120x4.5x6 1926 172.88 515.53150x75x3.2x4.5 1126 31.68 432.11150x100x3.2x4.5 1351 75.04 551.24150x100x4.5x6 1821 100.1 720.99150x150x4.5x6 2421 75.51 1032.21150x150x6x8 3204 98.67 1331.43200x100x3.2x4.5 1511 58.58 1045.92200x100x4.5x6 2046 78.08 1378.62200x100x6x8 2704 133.66 1786.89200x150x3.2x4.5 1961 253.18 1475.97200x150x4.5x6 2646 337.64 1943.34200x150x6x8 3504 450.33 2524.6200x200x6x8 4304 1067 3262.3250x125x3.2x4.5 1896 146.55 2068.56250x125x4.5x6 2571 123.36 2738.6250x125x4.5x8 3052 260.59 3409.75精品文档250x125x6x8 3404 260.84 3569.91250x150x3.2x4.5 2121 253.19 2407.62250x150x4.5x6 2871 337.68 31.8521250x150x4.5x8 3453 450.18 3995.6250x150x6x8 3804 450.42 4155.77250x200x6x8 4604 10.6709 5327.47300x150x3.2x4.5 2281 253.2 36.0441300x150x4.5x6 3096 337.72 4785.96300x150x4.5x8 3678 450.22 5976.11300x150x6x8 4104 450.51 6262.44300x200x6x8 4904 1067.18 7968.14350x150x4.5x8 3903 450.25 8416.36350x150x6x8 4404 450.6 8882.11350x175x3.2x4.5 2666 402.05 5757.85350x175x4.5x6 3621 536.19 7661.31350x175x4.5x8 4303 714.84 9586.21350x175x6x8 4804 715.18 10051.96350x200x6x8 5204 1067.27 11221.81其中: 型号--高度(mm)x翼缘宽(mm)x腹板厚(mm)x翼缘平均厚(mm)热轧H型钢型号 d t g A(cm2) Iy(cm4) Ix(cm4)HW100x100 6 8 10 2190 383 13HW125x125 6.5 9 10 3031 847 29HW150x150 7 10 13 4055 1660 54HW175x175 7.5 11 13 5143 2900 98精品文档HW200x200 8 12 16 6428 4770 16HW250x250 9 14 16 9218 10800 36HW300x300 10 15 20 12040 20500 67HW350x350 12 19 20 17390 40300 13HW400x400 13 21 24 21950 66900 22HM200x150 6 9 16 3976 2740 50HM250x175 7 11 16 5624 6120 98HM300x200 8 12 20 7303 11400 16HM350x250 9 14 20 10150 21700 36HM400x300 10 16 24 13670 38900 72HM450x300 11 18 24 15740 56100 81HM500x300 11 18 28 16440 71400 81HM600x300 12 20 28 19250 118000 90HN200x100 5.5 8 13 2757 1880 13HN250x125 6 9 13 3787 4080 29HN300x150 6.5 9 16 4753 7350 50HN350x175 7 11 16 6366 13700 98HN400x200 8 13 16 8412 23700 17HN450x200 9 14 20 9741 33700 18HN500x200 10 16 20 11420 47800 21HN600x200 11 17 24 13520 78200 22HN700x300 13 24 28 23550 201000 10HN800x300 14 26 28 26740 292000 11HN900x300 16 28 28 30980 411000 12HW100×100 6 8 10 2190 383 134精品文档HW175×175 7.5 11 13 5143 2900 984HW200×200 8 12 16 6428 4770 1600HW200×200 12 12 16 7228 5030 1700HW250×250 9 14 16 9218 10800 3650HW250×250 14 14 16 10470 11500 3880HW300×300 12 12 20 10830 17000 5520HW300×300 10 15 20 12040 20500 6760HW300×300 15 15 20 13540 21600 7100HW350×350 10 16 20 14600 33300 11200HW350×350 12 19 20 17390 40300 13600HW400×400 15 15 24 17920 49200 16300HW400×400 11 18 24 18760 56400 18900HW400×400 13 21 24 21950 66900 22400HW400×400 18 28 24 29620 93000 31000HW400×400 21 21 24 25150 71100 23800HW400×400 20 35 24 36140 119000 39400HW#200×150 6 9 16 3976 2740 508HW250×175 7 11 16 5624 6120 985HW300×200 8 12 20 7303 11400 1600HW350×250 9 14 20 10150 21700 3650HW400×300 10 16 24 13670 38900 7210HW450×300 11 18 24 15740 56100 8110HW500×300 11 15 28 14640 60800 6770HW500×300 11 18 28 16440 71400 8120HW600×300 12 17 28 17450 103000 7670 精品文档HW600×300 12 20 28 19250 118000 9020HW600×300 14 23 28 22240 137000 10600HN175×90 5 8 10 2321 1220 97HN#200×100 4.5 7 13 2359 1610 114HN#200×100 5.5 8 13 2757 1880 134HN250×125 5 8 13 3289 3560 255HN250×125 6 9 13 3787 4080 294HN300×150 5.5 8 16 4155 6460 443HN300×150 6.5 9 16 4753 7350 508HN350×175 6 9 16 5319 11200 792HN350×175 7 11 16 6366 13700 985HN400×150 8 13 16 7112 18800 734HN400×200 7 11 16 7216 20000 1450HN400×200 8 13 16 8412 23700 1740HN450×150 9 14 20 8341 27100 793HN450×200 8 12 20 8495 290000 1580HN450×200 9 14 20 9741 33700 1870HN500×150 10 16 20 9823 38500 907HN500×200 9 14 20 10130 41900 1840HN500×200 10 16 20 11420 47800 2140HN500×200 11 19 20 13130 56500 2580HN600×200 10 15 24 12120 69300 1980HN600×200 11 17 24 13520 78200 2280HN600×200 12 20 24 15330 91000 2720HN700×300 13 20 28 21150 172000 9020精品文档HN700×300 13 24 28 23550 201000 10800HP200×200 12 12 16 7228 5030 1700HP250×250 11 11 16 8205 8790 2940HP250×250 14 14 16 10470 11500 3880HP300×300 12 12 20 10830 17000 5520HP300×300 10 15 20 12040 20500 6760HP300×300 15 15 20 13540 21600 7110HP350×350 13 13 20 13530 28200 9380HP350×350 16 16 20 16660 35300 11800HP350×350 12 19 20 17390 40300 13600HP350×350 19 19 20 19840 42800 14400HP400×400 15 15 24 17920 49200 16300HP400×400 18 18 24 21520 59900 20000HP400×400 13 21 24 21950 66900 22400HP400×400 18 28 24 29620 93000 31000HP400×400 21 21 24 25150 71100 23800HP400×400 20 35 24 36140 119000 39400其中: 型号--高度(mm)x翼缘宽(mm)d--腹板厚(mm) t--翼缘平均厚(mm) g--重量(kg/m)表1-6 热轧普通工字钢规格及截面特性（GB 706-88）精品文档精品文档精品文档注：普通工字钢的通常长度：110～118，为5m～19m；120～163，为6m～19m。

名称：结构用冷弯方形空心型钢标准：GB/T 6728-2002边长壁厚理论重量截面面积惯性矩惯性半径截面模数允许偏差/mm 扭转常数t/mm外圆弧半径/mmB/mm t/mm M/(kg/m)A/cm^2Ix=Iy/c m^4rx=ry/cm Wx=Wy/cm^3It/cm^4Ct/cm^3碳素钢(σs ≤320MPa)低合金钢(σs≥320MPa)FGDA—FGXT ————————1.20.6790.8650.4980.7590.4980.8230.75t≤3 1.0～2.5t 1.5～2.5t 1.50.826 1.0520.5830.7440.5830.9850.883＜t≤6 1.5～2.5t 2.0～3.0t 1.750.941 1.1990.6420.7320.642 1.1060.986＜t≤10 2.0～3.0t 2.0～3.5t 2 1.05 1.340.6920.720.692 1.215 1.06t ＞102.0～3.5t 2.5～4.0t1.20.867 1.105 1.0250.9630.82 1.655 1.241.51.061 1.352 1.2160.9480.973 1.998 1.471.75 1.215 1.548 1.3570.936 1.0862.261 1.652 1.363 1.736 1.4820.923 1.186 2.502 1.8定尺精度级别长度范围/mm 允许偏差/mm 1.5 1.296 1.652 2.195 1.152 1.463 3.555 2.21 普通级别4000～12000(+70,0)1.751.49 1.8982.47 1.14 1.646 4.048 2.49精确级别4000～6000(+5,0)2 1.677 2.136 2.721 1.128 1.814 4.5112075精确级别＞6000～12000(+10,0)2.5 2.032 2.5893.154 1.103 2.102 5.347 3.23 2.361 3.008 3.5 1.078 2.333 6.06 3.581.5 1.767 2.525 5.489 1.561 2.7448.7284.131.75 2.039 2.598 6.237 1.549 3.11810.009 4.692 2.305 2.936 6.939 1.537 3.46911.2385.232.5 2.817 3.5898.213 1.512 4.10613.5396.213 3.303 4.2089.32 1.488 4.6615.6287.074 4.198 5.34711.064 1.438 5.53219.1528.481.5 2.238 2.85211.065 1.969 4.42617.395 6.651.75 2.589 3.29812.641 1.957 5.05620.0257.622.9333.73614.1461.9455.65822.5788.51允许偏差/mm厚度t/mm 20±0.50FGXR 25±0.5030±0.5040±0.5050±0.502.53.6024.58916.941 1.921 6.77627.43610.223 4.2455.40819.463 1.8977.78531.97211.774 5.4546.97423.725 1.8479.4940.04714.432 3.56 4.5425.12 2.358.3839.8112.62.54.3875.58930.34 2.32910.11348.53915.223 5.1876.60835.13 2.30511.7156.89217.654 6.718.54743.539 2.25614.51372.18821.9758.12910.35650.468 2.20716.82285.5625.612.5 5.17 6.5949.4 2.7414.178.521.23 6.1297.80857.522 2.71416.43492.18824.7447.96610.14772.108 2.66520.602117.97531.1159.69912.35684.602 2.61624.172141.18336.652.5 5.957.7.58975.147 3.14718.787118.5228.2237.0719.00887.838 3.12221.959139.6633.0249.22211.747111.031 3.07427.757179.80841.84511.26914.356131.414 3.02532.853216.62849.6838.01310.208127.277 3.53128.283201.10842.51410.47813.347161.907 3.48235.979260.08854.17512.83916.356192.903 3.43442.867314.89664.71615.09719.232220.42 3.38548.982365.45274.16411.73411.947226.337 3.89145.267361.21368.1514.40918.356271.071 3.84252.214438.98681.72616.98121.632311.415 3.79462.283511.55894.12412.9916.548305.94 4.355.625486.4783.63515.9820.356367.95 4.25266.9593.6100.74618.86624.033424.57 4.20377.194694.85116.47414.24618.147402.26 4.70867.043635.603100.75517.54922.356485.441 4.65980.906776.632121.75620.74926.432562.0944.61193.683910.281141.2250±0.5060±0.6070±0.6580±0.7090±0.75100±0.80110±0.90120±0.90826.8434.191696.639 4.513116.1061155.01174.58415.50219.748516.97 5.11779.534814.72119.48519.1224.356625.68 5.06896.258998.22144.77622.63428.833726.64 5.02111.791173.6168.36828.92136.842882.86 4.895135.821502.1209.54416.75821.347651.598 5.52453.0851022.18139.8520.68926.356790.523 5.476112.9311253.57169.78624.51731.232920.359 5.428131.4791475.02197.9831.86440.5911155.74 5.331164.8191887.61247.69418.01422.948807.82 5.933107.711264.8161.73522.2628.356982.12 5.885130.951554.1196.79626.40233.6331145.9 5.837152.791832.7229.84833.94543.2421411.8 5.714188.252364.1289.03419.2724.547987.152 6.341123.3941540.13185.25523.82930.3561202.32 6.293150.2891893.79225.79628.28536.0321405.41 6.245175.6762234.57264.18836.88846.9911776.5 6.148222.0622876.94333.56420.52626.1481191.3 6.75140.151855.8210.37525.432.3561453.3 6.702170.972285.3256.8630.1738.4331701.6 6.654200.182701300.91838.96949.6422118.2 6.532249.23503.1381.28421.827.714227.16158221023752734.417377.111932724290632.140.820377.062263223340841.552.82546 6.94283418943242329.316807.571762607265528.536.420557.522163216325633.943.224137.4725438073818445632087.353194958486130±1.00140±1.10150±1.20160±1.20170±1.30180±1.40190±1.50424.330.919687.971973049295530.138.424107.932413763362635.845.628337.882834459426846.559.235667.763575815544105772.642517.654257072651533.242.432388.742945038442639.650.438138.73475976521851.565.648288.5843978156681063.280.657828.4752695338041273.593.764878.325901114992253848.448059.973847443577645.257.656729.924548843681859.175.272299.8578115988781072.792.687079.76971419710621284.810898599.55789166911226542.754.4681011.248610513730650.964.8805411.157512504863866.684.810317117371643611171082.1104.61247910.98912017313561296.1122.51423210.810172*********54.769.699641266415434997871.691.21280111.88532031212931088.41131551911.71035249661572121041321776711.61184295141829664.181.61600814915246831372884.21072061813.91182325571787101041332518913.81439401272182121231562905413.61660475982552896.71233126915.91564489342362200±1.60220±1.80250±2.00280±2.20300±2.40350±2.80101201533821615.81911604312892121411804431915.72216718433395141632085041415.62521827353877810913944966181999700433016101351735510017.92449866293702121602046416417.728511031504357141852367321017.632541190004989812215562172202487964833750101511937634119.930541194704612121792288918719.8356814242054401420726410101019.7408016453062411623529911426019.645701861407013描述(D)1.空心型钢系用带钢冷弯后焊接而成。

按照截面积大体相近，并且饶X轴的抗弯强度不低于相应工字钢的原则，计算出了标准中H型钢有关型号与GB/T706-88〈热轧工字钢尺寸、外形、重量及允许偏差〉〉中的工字钢的有关型号以及他们的性能参数比较表（见表Ｂ１），以供有关人员在使用Ｈ型钢替代工字钢时参考。

表Ｂ１Ｈ型钢与工字钢型号及性能参数比较表精品文档精品文档精品文档热轧普通工字钢型号H B d t A Iy(mm4) Ix(mm4)普工10 100 68 4.5 7.6 1433 328000 2450000普工12.6 126 74 5 8.4 1810 469000 48普工14 140 80 5.5 9.1 2150 643000 7120000普工16 160 88 6 9.9 2611 93100011270000精品文档普工18 180 94 6.5 10.7 3074 1229000 16690000普工20a 200 100 7 11.4 3555 1579000 23690000普工20b 200 102 9 11.4 3955 1690000 25020000普工22a 220 110 7.5 12.3 4210 2259000 34060000普工22b 220 112 9.5 12.3 4650 2402000 35830000普工25a 250 116 8 13 4851 2804000 50170000普工25b 250 118 10 13 5351 2973000 52780000普工28a 280 122 8.5 13.7 5537 3441000 71150000普工28b 280 124 10.5 13.7 6097 3638000 74810000普工32a 320 130 9.5 15 6712 4590000 110800000普工32b 320 132 11.5 15 7352 4838000 116260000普工32c 320 134 13.5 15 7992 5101000 121730000普工36a 360 136 10 15.8 7644 5549000 157960000精品文档普工36b 360 138 12 15.8 8364 5836000165740000普工36c 360 140 14 15.8 9084 6140000173510000普工40a 400 142 10.5 16.5 8607 6599000217140000普工40b 400 144 12.5 16.5 9407 6928000227810000普工40c 400 146 14.5 16.5 10207 7275000238470000普工45a 450 150 11.5 18 10240 8550000322410000普工45b 450 152 13.5 18 11140 8954000337590000普工45c 450 154 15.5 18 12040 9380000352780000普工50a 500 158 12 20 11925 11215000 46普工50b 500 160 14 20 12925 11714000 48普工50c 500 162 16 20 13925 12239000 50普工56a 560 166 12.5 21 13538 13658000 65普工56b 560 168 14.5 21 14658 14238000 68普工56c 560 170 16.5 21 15778 14848000 71普工63a 630 176 13 22 15459 17024000 94普工63b 630 178 15 22 16719 17707000 98普工63c 630 180 17 22 17979 18424000 10精品文档精品文档其中: H--高度(mm) B--翼缘宽(mm) d--腹板厚(mm) t--翼缘平均厚(mm)A--截面面积(mm2)热轧轻型工字钢型号 H B dt A Iy(mm4) Ix(mm4) 轻工10 100 55 4.5 7.2 1200 179000 1980000 轻工12 120 64 4.8 7.3 1470 279000 3500000 轻工14 140 73 4.9 7.5 1740 419000 5720000 轻工16 160 81 5 7.8 2020 586000 8730000 轻工18 180 90 5.1 8.1 2340 826000 12900000 轻工18a 180 100 5.1 8.3 2540 1140000 14300000 轻工20 200 100 5.2 8.4 2680 1150000 18400000 轻工20a 200 110 5.2 8.6 2890 1550000 20300000 轻工22 220 110 5.4 8.7 3060 1570000 25500000 轻工22a 220 120 5.4 8.9 3280 2060000 27900000 轻工24 240 1155.69.53480198000034600000轻工24a 240 125 5.6 9.8 3750 260000038000000轻工27 270 125 6 9.8 4020 260000050100000轻工27a 270 135 6 10.2 4320 337000055000000轻工30 300 135 6.5 10.2 4650 337000070800000轻工30a 300 145 6.5 10.7 4990 436000077800000轻工33 330 140 7 11.2 5380 419000098400000轻工36 360 145 7.5 12.3 6190 5160000133800000轻工40 400 155 8 13 7140 6660000189300000轻工45 450 160 8.6 14.2 8300 8070000274500000轻工50 500 170 9.5 15.2 9780 10400000 39轻工55 550 180 10.3 16.5 11400 13500000 55轻工60 600 190 11.1 17.8 13200 17200000 75轻工65 650 200 12 19.2 15300 21700000 10轻工70 700 210 13 20.8 17600 27300000 13轻工70a 700 210 15 24 20200 32400000 15轻工70b 700 210 17.5 28.2 23400 39100000 17精品文档其中: H--高度(mm) B--翼缘宽(mm)d--腹板厚(mm) t--翼缘平均厚(mm) A--截面面积(mm2)大通高频焊接工字钢型号A(cm2) Iy(cm4) Ix(cm4)100x50x2.3x3.2 535 6.68 90.71100x50x3.2x4.5 741 9.4 122.77100x100x6x8 2104 133.48 369.05120x120x3.2x4.5 1435 129.63 396.84120x120x4.5x6 1926 172.88 515.53150x75x3.2x4.5 1126 31.68 432.11150x100x3.2x4.5 1351 75.04 551.24150x100x4.5x6 1821 100.1 720.99150x150x4.5x6 2421 75.51 1032.21150x150x6x8 3204 98.67 1331.43200x100x3.2x4.5 1511 58.58 1045.92200x100x4.5x6 2046 78.08 1378.62200x100x6x8 2704 133.66 1786.89200x150x3.2x4.5 1961 253.18 1475.97200x150x4.5x6 2646 337.64 1943.34200x150x6x8 3504 450.33 2524.6200x200x6x8 4304 1067 3262.3250x125x3.2x4.5 1896 146.55 2068.56250x125x4.5x6 2571 123.36 2738.6250x125x4.5x8 3052 260.59 3409.75精品文档250x125x6x8 3404 260.84 3569.91250x150x3.2x4.5 2121 253.19 2407.62250x150x4.5x6 2871 337.68 31.8521250x150x4.5x8 3453 450.18 3995.6250x150x6x8 3804 450.42 4155.77250x200x6x8 4604 10.6709 5327.47300x150x3.2x4.5 2281 253.2 36.0441300x150x4.5x6 3096 337.72 4785.96300x150x4.5x8 3678 450.22 5976.11300x150x6x8 4104 450.51 6262.44300x200x6x8 4904 1067.18 7968.14350x150x4.5x8 3903 450.25 8416.36350x150x6x8 4404 450.6 8882.11350x175x3.2x4.5 2666 402.05 5757.85350x175x4.5x6 3621 536.19 7661.31350x175x4.5x8 4303 714.84 9586.21350x175x6x8 4804 715.18 10051.96350x200x6x8 5204 1067.27 11221.81其中: 型号--高度(mm)x翼缘宽(mm)x腹板厚(mm)x翼缘平均厚(mm)热轧H型钢型号 d t g A(cm2) Iy(cm4) Ix(cm4)HW100x100 6 8 10 2190 383 13HW125x125 6.5 9 10 3031 847 29HW150x150 7 10 13 4055 1660 54HW175x175 7.5 11 13 5143 2900 98精品文档。

工字钢,槽钢,角钢,H型钢的截面特性(最全)word资料热轧等边角钢的规格及截面特性(GB/T9787-1988计算1106 ACTA AUTOMATICA SINICA Vol. 35 5 Yang F, Zhang Q L. Delay-dependent H∞ control for linear descriptor systems with delay in state. Journal of Control Theory and Applications, 2020, 3(1: 76−84 6 Boukas E K. Singular linear systems with delay: H∞ stabilization. Optimal Control Applications and Methods, 2020, 28(4:259−274 7 Zhong R X, Yang Z. Delay-dependent robust control of descriptor systems with time delay. Asian Journal of Control, 2020 , 8(1: 36−44 8 Zhu S Q, Li Z B, Cheng Z L. Delay-dependent robust resilient H∞ control for uncertain singular time-delay systems. In: Proceedings of the 44th IEEE Conference on Decision and Control, and European Control Conference. Seville, Spain: IEEE, 2020. 1373−1378 9 Yue D, Han Q L. Delay-dependent robust H∞ controller design for uncertain descriptor systems with time-varying discrete and distributed delays. IEE Proceedings — Control Theory and Applications, 2020, 152(6: 628−638 10 He Y, Wang Q G, Lin C, Wu M. Delay-range-dependent stability for systems with time-varying delay. Automatica, 2020, 43(2:371−376 11 He Y, Wang Q G, Xie L H, Lin C. Further improvement of free-weighting matrices technique for systems with timevarying delay. IEEE Transactions on AutomaticCon trol, 2020, 52(2: 293−299 12 Xu S Y, Lam J, Zou Y. An improved characterizationof bounded realness for singular delay systems and its applications. International Journal of Robust and Nonlinear Control, 2020, 18(3: 263−277 13 Wu Z G, Zhou W N. Delay-depen dent robust H∞ control for uncertain singular time-delay systems. IET Control Theory and Applications, 2020, 1(5: 1234−1241 14 Shu Z, Lam J. Exponential estimates and stabilization of uncertain singular systems with discrete and distributed delays. Interna tional Journal of Control, 2020 , 81(6: 865−882 15 Xu S Y, Dooren P V, Stefan R, Lam J. Robust stability and stabilization for singular systems with state delay and parameter uncertainty. IEEE Transactions on Automatic Control, 2002, 47(7: 1122−1128 16 Zhu S Q, Cheng Z L, Feng J. Delay-dependent robust stability criterion and robust stabilization for uncertain singular time-delay systems. In: Proceedings of the American Control Conference. Portland, USA: IEEE, 2020. 2839−2844 17 Fridman E. Stability of linear descriptor systems with delay: a Lyapunov-based approach. Journal of Mathematical Analysis and Applications, 2002, 273(1: 24−44 WU Zheng-Guang Received the M.E. degree from Zhejiang Normal University in 2020. At present, he is a Ph. D. candidate in the Institute of Cyber-Systems and Control, Zhejiang University. His research interest covers robust control and system theory. Corresponding author of this paper. E-mail: nashwzhg@126 SU Hong-Ye Received his B.E. degree in industrial automation from Nanjing University of Chemical Technology in 1990. He later obtained his M.S. and Ph. D. degrees from Zhejiang University in 1993 and 1995, respectively. From 1995 to 1997, he was a lecturer in the Department of Chemical Engineering, Zhejiang University. From 1998 to 2000, he was an associate professor at the Institute of Industrial Process Control, Zhejiang University. At present, he is a professor. His research interest covers robust control, time-delay systems, advanced process control theory and application. E-mail: hysu@ CHU Jian Received his B.E. and M.S. degrees from Zhejiang University in 1982 and 1984, respectively. From 1986 to 1989, he studied in Kyoto University, Japan, and received his Ph. D. degree there. Then, he came back to Zhejiang University for postdoctoral research at the Institute of Industrial ProcessControl, Zhejiang University. In 1991, he was promoted as an associate professor, and promoted as a full professor in 1993. His research interest covers control theory and application, research and development of computer control systems and advanced process control software. E-mail: jchu@0引言预应力混凝土连续梁桥的施工过程比较复杂,不仅要经历悬臂浇注梁段的过程,还要经历边、中跨合龙以及解除临时约束等体系转换的过程,因此,在整个施工过程中主梁标高和内力都是不断变化的。

热轧型钢尺寸、外形允许偏差参考国家标准GB706-2008名称型号规格允许偏差工字钢槽钢高度h 腿宽度b 腰高度d 平均腿厚度t 外缘斜度T弯腰挠度W弯曲度工字钢槽钢16 160*88*6 160*63*6.5 /A ±2.0 ±2.5 ±0.5 9.9±0.06tT≤1.5%b2T≤2.5%bW≤0.15d工字钢：每米弯曲度≤2mm总弯曲度≤总长度的0.20%。

槽钢：每米弯曲度≤3mm总弯曲度≤总长度的0.30%。

以上适用于上下、左右大弯曲18 180*94*6.5 180*68*7.0 /A ±2.0 ±2.5 ±0.5 10.7±0.06t20A 200*100*7 200*73*7.0±3.0 ±3.0 ±0.7 11.4±0.06t20B 200*102*9 200*75*9.022A 220*110*7.5 220*77*7.0±3.0 ±3.0 ±0.7 12.3±0.06t22B 220*112*9.5 220*79*9.025A 250*116*8 250*78*7.0±3.0 ±3.0 ±0.7 13±0.06t25B 250*118*10 250*80*9.028A 280*122*8.5 280*82*7.5±3.0 ±3.0 ±0.7 13.7±0.06t28B 280*124*10.5 280*84*9.530A 300*126*9 300*85*7.5±3.0 ±3.5 ±0.8 14.4±0.06t30B 300*128*11 300*87*9.532A 320*130*9.5 320*88*8.0±3.0 ±3.5 ±0.8 15±0.06t32B 320*132*11.5 320*90*10名称规格边宽度（等边）边宽度（不等边）边厚度顶端直角弯曲度角钢≤56 ±0.8 ±0.8 ±0.4≤50′每米弯曲度≤3mm总弯曲度≤总长度的0.30%。