镀锌钢绞线通常指用于承力索(messenger wire)、拉线(guy wire)、加强芯(core wire or strength member)等,也可以作为架空输电的地线(earth wire/ground wire)、公路两边的阻拦索(barrier cable)或建筑结构中的结构索(structure cable)。预应力钢绞线中常用的预应力钢绞线为无镀层的低松弛预应力钢绞线(uncoated steel strand for prestressed concrete),也有镀锌的(galvanized),常用于桥梁、建筑、水利、能源及岩土工程等,无粘结预应力钢绞线(unbonded steel strand or monostrand)常用于楼板、地基工程等。
结构 | 公称直径mm | 允许偏差mm | 近似质量g/m | 强度等级Mpa | 屈服强度Mpa | 最小伸长率% | 应力松弛性能 | |
初始符合相当于******力的百分数% | 1000小时后应力松弛率%不大于 | |||||||
1x2 |
5.0 5.8 |
+0.15 -0.05 |
77.1 104 |
1570-1960 1470-1960 1470-1860 |
≥90%Eb | 3.5(lo≥400mm) |
60 70 80 |
1.0 2.5 4.5 |
8.0 10.00 12.00 |
+0.25 -0.10 |
197 309 |
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1x3 |
6.2(5.41) 6.5(5.60) |
+0.15 -0.05 |
155 166 |
1570-1960 | ≥90%Eb | 3.5(lo≥400mm) |
60 70 80 |
1.0 2.5 4.5 |
296 | 1470-1960 | |||||||
8.6(7.46) 8.74(7.56) 10.80(9.33) 12.90(11.20) |
+0.20 -0.10 |
303 | 1570-1870 | |||||
462 666 |
1470-1960 | |||||||
1x7 | 9.50 |
+0.30 -0.15 |
430 582 |
1720-1960 | ≥90%Eb | 3.5(lo≥400mm) |
60 70 80 |
1.0 2.5 4.5 |
+0.40 -0.20 |
775 |
1470-1960 1770-1860 1720-1860 |
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1470-1960 1770-1860 1720-1860 |
等级 | 公称直径mm | 允许偏差mm | 屈服强度Mpa | 最小伸长率% | 应力松弛性能 | |
初始负荷相当******力的百分数% | 1000小时后应力松弛率%不大于 | |||||
250 |
3/8-3/5 (9.53-15.24) |
±0.40 | ≥90%Eb | 3.5 |
60 70 80 |
1.0 2.5 4.5 |
270 |
3/8-3/5 (9.53-15.24) |
+0.65 -0.15 |
90%Eb |
锌铝合金镀层钢绞线
结构 | 钢丝绳直径mm | 钢丝绳直径mm | 钢绞线断面积mm² | 钢绞线公称抗拉强度Mpa | 参考重量kg/100M | ||||
1175 | 1270 | 1370 | 1470 | 1570 | |||||
钢丝破断拉力总和KN≥ | |||||||||
1x7 | 1.20 | 3.6 | 7.92 | 9.31 | 10.06 | 10.85 | 11.64 | 12.43 | 6.29 |
1.60 | 4.8 | 14.07 | 16.53 | 17.87 | 19.28 | 20.68 | 22.09 | 11.17 | |
1.80 | 5.4 | 17.81 | 20.93 | 22.62 | 24.40 | 26.18 | 27.96 | 14.14 | |
2.00 | 6.0 | 21.99 | 25.84 | 27.93 | 30.13 | 32.32 | 43.52 | 17.46 | |
2.20 | 6.6 | 26.60 | 31.26 | 33.78 | 36.44 | 39.10 | 41.76 | 22.79 | |
2.30 | 6.9 | 29.08 | 34.17 | 36.93 | 39.84 | 42.75 | 45.66 | 23.09 | |
2.60 | 7.8 | 37.17 | 43.60 | 47.20 | 50.92 | 54.63 | 58.30 | 29.51 | |
2.90 | 8.7 | 46.24 | 54.33 | 58.72 | 63.35 | 67.97 | 72.60 | 36.71 | |
3.00 | 9.0 | 49.48 | 58.14 | 62.84 | 67.79 | 72.74 | 77.68 | 42.38 | |
3.20 | 9.6 | 56.30 | 66.15 | 71.50 | 77.13 | 82.76 | 88.39 | 44.70 | |
3.50 | 10.5 | 67.35 | 79.14 | 85.85 | 92.27 | 99.00 | 105.74 | 53.48 | |
3.8 | 11.4 | 7.39 | 93.28 | 100.82 | 108.76 | 116.70 | 124.64 | 63.04 | |
1x19 | 1.60 | 8.0 | 38.2 | 44.88 | 48.51 | 52.33 | 56.15 | 56.97 | 30.40 |
1.80 | 9.0 | 48.35 | 56.81 | 61.40 | 66.24 | 71.07 | 75.91 | 38.49 | |
2.00 | 10.0 | 59.69 | 70.14 | 75.81 | 81.77 | 87.74 | 93.71 | 47.62 | |
2.20 | 11.0 | 72.22 | 84.86 | 91.71 | 98.94 | 106.16 | 113.39 | 56.69 | |
2.30 | 11.5 | 78.94 | 92.75 | 100.25 | 108.15 | 116.04 | 123.94 | 62.84 | |
2.60 | 13.0 | 100.88 | 118.53 | 128.12 | 138.20 | 148.29 | 158.38 | 80.30 | |
2.90 | 14.5 | 125.50 | 147.46 | 159.38 | 171.93 | 184.48 | 197.03 | 99.90 | |
3.00 | 15.0 | 134.30 | 157.80 | 170.56 | 183.99 | 197.42 | 210.85 | 105.53 | |
3.20 | 16.0 | 152.81 | 179.55 | 194.06 | 209.35 | 224.63 | 239.91 | 121.64 | |
3.50 | 17.5 | 182.80 | 214.79 | 232.16 | 250.44 | 268.72 | 287.00 | 145.51 | |
3.80 | 19.0 | 215.48 | 253.19 | 273.66 | 295.20 | 316.76 | 338.30 | 169.15 |
公称直径mm | 镀层重量g/m²不小于 | 硫酸铜浸置次数60秒/次不小于 | 镀层附着性试验 | |
芯杆直径为钢丝直径的倍数 | 缠绕圈数 | |||
1.27-1.52 | 185 | 2 | 1 | 8 |
1.53-1.90 | 200 | 2 | ||
1.91-2.28 | 215 | 3 | ||
2.29-2.63 | 230 | 3 | ||
2.64-3.04 | 255 | 4 | 3 | |
3.05-3.80 | 275 | 4 | 3 |
公称直径mm | 抗拉强度Mpa不小于 | 1%伸长时应力Mpa不小于 | 伸长率(L=200mm)%不小于 | 扭转次数(次/360)次 |
1.27-2.28 | 1310 | 1170 | 4 | 18 |
2.29-3.04 | 1310 | 1170 | 4 | 18 |
3.05-3.80 | 1310 | 1170 | 4 | 18 |