直径 d (mm) | 不同根数直径的计算截面面积(mm2) | 单根钢筋 公称质量 (kg/m) | ||||||||
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | ||
3 4 5 6 6.5 | 7.1 12.6 19.6 28.3 33.2 | 14.1 25.1 39 57 66 | 21.2 37.7 59 85 100 | 28.3 50.3 79 113 133 | 35.3 62.8 98 141 166 | 42.4 75.4 118 170 199 | 49.5 88.0 137 198 232 | 56.5 100.5 157 226 265 | 63.6 113.1 177 254 299 | 0.0555 0.0986 0.154 0.222 0.260 |
8 8.2 10 12 14 | 50.3 52.8 78.5 113.1 153.9 | 101 106 157 226 308 | 151 158 236 339 462 | 201 211 314 452 616 | 251 2 393 565 770 | 302 317 471 679 924 | 352 370 550 792 1078 | 402 422 628 905 1232 | 452 475 707 1018 1385 | 0.395 0.415 0.617 0.888 1.208 |
16 18 20 22 25 | 201.1 254.5 314.2 380.1 490.9 | 402 509 628 760 982 | 603 763 942 1140 1473 | 804 1018 1257 1521 1963 | 1005 1272 1571 1901 2454 | 1206 1527 1885 2281 2945 | 1407 1781 2199 2661 3436 | 1608 2036 2513 3041 3927 | 1810 2290 2827 3421 4418 | 1.578 1.998 2.466 2.984 3.853 |
28 32 36 40 | 615.8 804.2 1017.9 1256.6 | 1232 1608 2036 2513 | 1847 2413 3054 3770 | 2463 3217 4072 5027 | 3079 4021 50 6283 | 3695 4825 6107 7540 | 4310 5630 7125 8796 | 4926 34 8143 10053 | 5542 7238 9161 11310 | 4.834 6.313 7.990 9.865 |
每米板宽内的钢筋截面面积表
钢筋间距 (mm) | 当钢筋直径(mm)为下列数值时的钢筋截面面积(mm2) | ||||||||||||
4 | 4.5 | 5 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 25 | |
70 75 80 90 100 | 180 168 157 140 126 | 227 212 199 177 159 | 280 262 245 218 196 | 404 377 353 314 283 | 718 670 628 559 503 | 1122 1047 982 873 785 | 1616 1508 1414 1257 1131 | 2199 2053 1924 1710 1539 | 2872 2681 2513 2234 2011 | 3635 3393 3181 2827 2545 | 4488 41 3927 3491 3142 | 5430 5068 4752 4224 3801 | 7012 6545 6136 5454 4909 |
110 120 125 130 140 150 | 114 105 101 97 90 84 | 145 133 127 122 114 106 | 178 1 157 151 140 131 | 257 236 226 217 202 188 | 457 419 402 387 359 335 | 714 654 628 604 561 524 | 1028 942 905 870 808 754 | 1399 1283 1232 1184 1100 1026 | 1828 1676 1608 1547 1436 1340 | 2313 2121 2036 1957 1818 1696 | 2856 2618 2513 2417 2244 2094 | 3456 3168 3041 2924 2715 2534 | 4462 4091 3927 3776 3506 3272 |
160 170 175 180 190 200 | 79 74 72 70 66 63 | 99 94 91 88 84 80 | 123 115 112 109 103 98 | 177 166 162 157 149 141 | 314 296 287 279 265 251 | 491 462 449 436 413 392 | 707 665 6 628 595 565 | 962 906 880 855 810 770 | 1257 1183 1149 1117 1058 1005 | 1590 1497 1454 1414 1339 1272 | 1963 1848 1795 1745 1653 1571 | 2376 2236 2172 2112 2001 1901 | 3068 2887 2805 2727 2584 2454 |
250 300 | 50 42 | 53 | 79 65 | 113 94 | 201 168 | 314 262 | 452 377 | 616 513 | 804 670 | 1018 848 | 1257 1047 | 1521 1267 | 1963 1636 |
钢筋间距 | 4 | 4.5 | 5 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 25 |
梁纵向钢筋单排最大根数
∙净保护层厚度(mm): 25 30 35 40
梁纵向钢筋单排最大根数 (净保护层厚度:25mm)
梁宽 b (mm) | 钢筋直径(mm) | |||||||||
14 | 16 | 18 | 20 | 22 | 25 | 28 | 32 | 36 | 40 | |
150 | 2/3 | 2/3 | 2 | 2 | 2 | 2 | 1/2 | 1 | 1 | 1 |
200 | 4 | 3/4 | 3/4 | 3 | 3 | 3 | 2/3 | 2 | 2 | 1/2 |
250 | 5 | 5 | 4/5 | 4/5 | 4 | 3/4 | 3 | 2/3 | 2 | 2 |
300 | 6/7 | 6 | 5/6 | 5/6 | 5 | 4/5 | 4 | 3/4 | 3 | 2/3 |
350 | 7/8 | 7 | 6/7 | 6/7 | 6 | 5/6 | 4/5 | 4 | 3/4 | 3 |
400 | 8/9 | 8/9 | 7/8 | 7/8 | 6/7 | 6/7 | 5/6 | 4/5 | 4/5 | 3/4 |
450 | 9/10 | 9/10 | 8/9 | 8/9 | 7/9 | 7/8 | 6/7 | 5/6 | 4/5 | 4/5 |
500 | 10/12 | 10/11 | 10/11 | 9/10 | 8/10 | 7/9 | 6/8 | 6/7 | 5/6 | 4/5 |
550 | 12/13 | 11/12 | 11/12 | 10/11 | 9/11 | 8/10 | 7/9 | 6/8 | 5/7 | 5/6 |
600 | 13/14 | 12/14 | 12/13 | 11/12 | 10/12 | 9/11 | 8/10 | 7/8 | 6/7 | 5/7 |
梁宽 b | 14 | 16 | 18 | 20 | 22 | 25 | 28 | 32 | 36 | 40 |
梁纵向钢筋单排最大根数 (净保护层厚度:30mm)
梁宽 b (mm) | 钢筋直径(mm) | |||||||||
14 | 16 | 18 | 20 | 22 | 25 | 28 | 32 | 36 | 40 | |
150 | 2 | 2 | 2 | 2 | 2 | 2 | 1/2 | 1 | 1 | 1 |
200 | 3/4 | 3 | 3 | 3 | 3 | 2/3 | 2/3 | 2 | 2 | 1/2 |
250 | 5 | 4/5 | 4/5 | 4 | 4 | 3/4 | 3 | 2/3 | 2 | 2 |
300 | 6 | 5/6 | 5/6 | 5 | 4/5 | 4/5 | 4 | 3/4 | 3 | 2/3 |
350 | 7/8 | 6/7 | 6/7 | 6/7 | 5/6 | 5/6 | 4/5 | 4 | 3/4 | 3 |
400 | 8/9 | 8 | 7/8 | 7/8 | 6/7 | 6/7 | 5/6 | 4/5 | 4/5 | 3/4 |
450 | 9/10 | 9/10 | 8/9 | 8/9 | 7/8 | 6/8 | 6/7 | 5/6 | 4/5 | 4/5 |
500 | 10/11 | 10/11 | 9/10 | 9/10 | 8/9 | 7/9 | 6/8 | 6/7 | 5/6 | 4/5 |
550 | 11/12 | 11/12 | 10/11 | 10/11 | 9/10 | 8/10 | 7/9 | 6/8 | 5/7 | 5/6 |
600 | 12/14 | 12/13 | 11/13 | 11/12 | 10/12 | 9/11 | 8/10 | 7/8 | 6/7 | 5/7 |
梁宽 b | 14 | 16 | 18 | 20 | 22 | 25 | 28 | 32 | 36 | 40 |
梁纵向钢筋单排最大根数 (净保护层厚度 35mm)
梁宽 b (mm) | 钢筋直径(mm) | |||||||||
14 | 16 | 18 | 20 | 22 | 25 | 28 | 32 | 36 | 40 | |
150 | 2 | 2 | 2 | 2 | 2 | 1/2 | 1 | 1 | 1 | 1 |
200 | 3 | 3 | 3 | 3 | 2/3 | 2/3 | 2 | 2 | 2 | 1/2 |
250 | 4/5 | 4/5 | 4 | 4 | 3/4 | 3/4 | 3 | 2/3 | 2 | 2 |
300 | 5/6 | 5/6 | 5 | 5 | 4/5 | 4/5 | 3/4 | 3/4 | 3 | 2/3 |
350 | 7/7 | 6/7 | 6/7 | 6 | 5/6 | 5/6 | 4/5 | 4 | 3/4 | 3 |
400 | 8/9 | 7/8 | 7/8 | 7 | 6/7 | 5/7 | 5/6 | 4/5 | 4/5 | 3/4 |
450 | 9/10 | 8/9 | 8/9 | 8/9 | 7/8 | 6/8 | 6/7 | 5/6 | 4/5 | 4/5 |
500 | 10/11 | 10/11 | 9/10 | 9/10 | 8/9 | 7/9 | 6/8 | 5/7 | 5/6 | 4/5 |
550 | 11/12 | 11/12 | 10/11 | 10/11 | 9/10 | 8/10 | 7/9 | 6/8 | 5/7 | 5/6 |
600 | 12/14 | 12/13 | 11/12 | 11/12 | 10/11 | 9/11 | 8/9 | 7/8 | 6/7 | 5/7 |
梁宽 b | 14 | 16 | 18 | 20 | 22 | 25 | 28 | 32 | 36 | 40 |
梁纵向钢筋单排最大根数 (净保护层厚度 40mm)
梁宽 b (mm) | 钢筋直径(mm) | |||||||||
14 | 16 | 18 | 20 | 22 | 25 | 28 | 32 | 36 | 40 | |
150 | 2 | 2 | 2 | 2 | 1/2 | 1 | 1 | 1 | 1 | 1 |
200 | 3 | 3 | 3 | 3 | 2/3 | 2 | 2 | 2 | 1/2 | 1/2 |
250 | 4/5 | 4 | 4 | 4 | 3/4 | 3 | 3 | 2/3 | 2 | 2 |
300 | 5/6 | 5 | 5 | 5 | 4/5 | 4 | 3/4 | 3 | 3 | 2/3 |
350 | 6/7 | 6/7 | 6 | 6 | 5/6 | 4/5 | 4/5 | 3/4 | 3/4 | 3 |
400 | 7/8 | 7/8 | 7/8 | 7 | 6/7 | 5/6 | 5/6 | 4/5 | 4 | 3/4 |
450 | 8/10 | 8/9 | 8/9 | 8 | 7/8 | 6/7 | 5/7 | 5/6 | 4/5 | 4/5 |
500 | 10/11 | 9/10 | 9/10 | 9 | 8/9 | 7/8 | 6/8 | 5/7 | 5/6 | 4/5 |
550 | 11/12 | 10/12 | 10/11 | 10/11 | 9/10 | 8/9 | 7/8 | 6/7 | 5/7 | 5/6 |
600 | 12/13 | 11/13 | 11/12 | 11/12 | 10/11 | 8/10 | 8/9 | 7/8 | 6/7 | 5/7 |
梁宽 b | 14 | 16 | 18 | 20 | 22 | 25 | 28 | 32 | 36 | 40 |