普通纵向受拉钢筋最小锚固长度(mm)表

砼强度等级

锚固长度(mm)直径(mm)

60.2880.2880.2886.50.2910.2910.29180.3380.3000.3008.20.3460.3010.301100.4230.3570.373120.5070.4280.447140.5920.4990.522160.6760.5700.596180.7610.6420.671200.8450.7130.745220.9300.7840.82025 1.0560.8910.93128 1.1830.998 1.04332 1.352 1.141 1.19236 1.521 1.283 1.34140 1.690 1.426 1.49050 2.113 1.783 1.86360.2640.2500.2506.50.2860.2500.25080.3520.2610.3048.20.3610.2670.312100.4400.3260.380120.5280.3910.456140.6160.4560.532160.7040.5220.608180.7920.5870.684200.8800.6520.760220.9680.7170.83625 1.1000.8150.95028 1.3720.969 1.17632 1.568 1.107 1.34436 1.764 1.246 1.51240 1.960 1.384 1.68050 2.450 1.730 2.10060.3180.2500.2766.50.3450.2500.29980.4240.2900.3688.20.4350.2970.377100.5300.3620.46012

0.636

0.434

0.552

LaE 0.4LaE+15d

C20

C25

HPB235

普通纵向受拉钢筋一,二

钢筋种类

HRB335

LaE

140.7420.5070.644

160.8480.5790.736 HRB400 RRB400

180.9540.6520.828

20 1.0600.7240.920

22 1.1660.796 1.012

25 1.3250.905 1.150

28 1.484 1.070 1.288

32 1.696 1.222 1.472

36 1.908 1.375 1.656

40 2.120 1.528 1.840

50 2.650 1.910 2.300

0.2880.2880.2880.2880.2880.2880.2910.2910.2910.2910.2910.2910.3000.3000.3000.3000.3000.3000.3010.3010.3010.3010.3010.3010.3370.3330.3210.3130.3130.3130.4040.3990.3850.3750.3750.3510.4710.4660.4490.4380.4380.4100.5380.5320.5130.5000.5000.4680.6060.5990.5770.5630.5630.5270.6730.6650.6410.6250.6250.5850.7400.7320.7050.6880.6880.6440.8410.8310.8010.7810.7810.7310.9420.9310.8970.8750.8750.8191.077 1.064 1.026 1.000 1.0000.9361.211 1.197 1.154 1.125 1.125 1.0531.346 1.330 1.282 1.250 1.250 1.1701.683 1.663 1.603 1.563 1.563 1.4630.2500.2500.2500.2500.2500.2500.2500.2500.2500.2500.2500.2500.2500.2720.2500.2500.2500.2500.2500.2790.2500.2500.2500.2500.3020.3400.2860.3100.2740.2900.3620.4080.3430.3720.3290.3480.4230.4760.4000.4340.3840.4060.4830.5440.4580.4960.4380.4640.5440.6120.5150.5580.4930.5220.6040.6800.5720.6200.5480.5800.6640.7480.6290.6820.6030.6380.7550.8500.7150.7750.6850.7250.890 1.0640.8460.9520.8010.8961.018 1.2160.966 1.0880.915 1.0241.145 1.368 1.087 1.224 1.030 1.1521.272 1.520 1.208 1.360 1.144 1.2801.590 1.900 1.510 1.700 1.430 1.6000.2500.2500.2500.2500.2500.2500.2500.2500.2500.2500.2500.2500.2670.3280.2510.2960.2500.2720.2740.3360.2570.3030.2500.2790.3340.4100.3140.3700.2500.3400.401

0.492

0.377

0.444

0.358

0.408

C35

≥C4

LaE 0.4LaE+15d

C25

C30

一,二级抗震等级的最小锚固长度(m)表

LaE 0.4LaE+15d

LaE 0.4LaE+15d

0.4680.5740.4400.5180.4170.476 0.5340.6560.5020.5920.4770.544 0.6010.7380.5650.6660.5360.612 0.6680.8200.6280.7400.5960.680 0.7350.9020.6910.8140.6560.748 0.835 1.0250.7850.9250.7450.850

0.991 1.2600.924 1.1480.879 1.064

1.133 1.440 1.056 1.312 1.005 1.216 1.274 1.620 1.188 1.476 1.130 1.368 1.416 1.800 1.320 1.640 1.256 1.520 1.770

2.250 1.650 2.050 1.570 1.900

≥C40

0.4LaE+15d

0.288

0.291

0.300

0.301

0.313

0.365

0.426

0.487

0.548

0.609

0.670

0.761

0.853

0.974

1.096

1.218

1.523

0.250

0.250

0.250

0.250

0.266

0.319

0.372

0.426

0.479

0.532

0.585

0.665

0.778

0.890

1.001

1.112

1.390

0.250

0.250

0.250

0.250

0.286

0.343

0.400 0.458 0.515 0.572 0.629 0.715 0.846

0.966

1.087 1.208 1.510