一、二级抗震纵向拉筋锚固LaE

1、使 用 说明1、本表计算数据长度均以“ M”为单位，根据03G101 1平面整体表示方法构造详图第33页和第34页表示测制，本表 所列钢筋长度仅对梁钢筋锚固长度计算使用。2、屋面梁锚入端柱及角柱的锚固长度不在本表所列之中，计算时应根据设计选类进行计算，分别查阅03G101 1图集 的第55、56、58、59页节点作法要求。3、 表中xx. xd端锚即是LaE*0.4+15d ；表中xxd中锚即是LaE。4、吊筋测算指一根钢筋的长度，测算时系按梁厚250计算，如果次梁为200或300时分别在表中长度增减50计算。5、梁柱箍筋计算：梁柱砼截面减去保护层的周长加锚固的长度分别为0 6.5=0.16m

2、 ； 0 8=0.20m ； 0 10=0.25m ； 0 12=0.30m(即减保护层后的周长+锚固长度=1个箍筋的长度)，抗扭、构造钢筋的拉筋，当梁宽W 350时，拉筋直径为6mm；梁 宽350时，拉筋直径为8mm。拉筋间距为非加密区箍筋间距的两倍。6、HPB普通I级圆钢锚固长度：一、二级抗震纵向拉筋锚固：中锚C20砼=36d； C25砼=31d ；端头弯锚C20砼=29.4d ；中锚C25砼=27.4d ； C30 砼=27d ；端头弯锚=258d。三级抗震纵向拉筋锚固：中锚C20砼=33d ； C25砼=28d ；端头弯锚C20砼=28.2d ；中锚C25砼=26.2d ； C30砼=

3、25d ； C35 砼=23d ；端头弯锚 C30 砼=25d ； C35 砼=24.2d ；中锚 C30 砼=25d ； C35 砼=23d ；端头弯锚 C30 砼=25d ； C35 砼=24.2d。四级抗震纵向拉筋锚固：中锚C20砼=31d ； C25砼=25d ；端头弯锚C20砼=27.4d ； C25砼=25d ；中锚C30砼=25d ； C35砼=25d ；端头弯锚C30砼=25d ； C35砼=25d ；中锚C40砼=25d ；端头弯锚C40砼=25 d编制者：李调整吊筋长度梁高450梁高500梁高550梁高600梁高650梁高700梁高750梁高800梁吊筋（II）C 121.

4、932.072.222.362.502.642.782.92梁吊筋（II）C 142.012.152.302.442.582.722.863.00梁吊筋（II）C 162.092.232.382.522.662.802.943.08梁吊筋（II）C 182.172.312.462.602.742.883.023.16梁吊筋（II）C 202.252.392.542.682.822.963.103.24梁吊筋（II）C 222.332.472.622.762.903.043.183.32注：梁吊筋长度系按减保护层30mm计算；如果梁的保护层为25mm时则应按上表内长度增0.028m。吊筋计算长度

5、（指一根钢筋、梁厚按250计算）i=岸构造钢筋计算长度锚固钢筋0120 140160180 200 220 25L梁下筋（II） 12d0.14x2=0.280.17x2=0.340.19x2=0.380.22x2=0.440.24x2=0.480.26x2=0.520.30 x2=0.60构造筋圆钢15d0.26x2=0.520.30 x2=0.600.34x2=0.680.38x2=0.760.43x2=0.860.47x2=0.940.53x2=1.06构造筋（II） 15d0.18x2=0.360.21x2=0.420.24x2=0.480.27x2=0.540.30 x2=0.600

6、.33x2=0.660.38x2=0.76挑下筋圆钢12d0.290.340.390.440.490.540.61挑下筋（II） 12d0.140.170.190.220.240.260.30架立筋圆钢0.23 X 2=0.460.24X2=0.480.25X2=0.500.26X2=0.520.28X2=0.560.29X2=0.580.31X2=0.62架立筋（II）0.15x2=0.300.15x2=0.300.15x2=0.300.15x2=0.300.15x2=0.300.15x2=0.300.15x2=0.30C20砼30.6d端锚39d中锚中加端锚C20砼33.4端锚46中锚中加

7、端锚HRB* 120.39x2=0.780.53x2=1.060.39+0.53=0.92m级一c 120.43x2=0.860.64x2=1.280.43+0.64=1.07HRB* 140.46x2=0.920.62x2=1.240.46+0.62=1.08m级一c 140.51x2=1.020.74x2=1.480.51+0.74=1.25HRB* 160.52x2=1.040.70 x2=1.400.52+0.70=1.22m级一c 160.58x2=1.160.85x2=1.700.58+0.85=1.43HRB-C 180.59x2=1.180.79x2=1.580.59+0.79

8、=1.38m级一c 180.65x2=1.300.95x2=1.900.65+0.95=1.60HRB-C 200.65x2=1.300.88x2=1.760.65+0.88=1.53m级一c 200.72x2=1.441.06x2=2.120.72+1.06=1.78HRB-C 220.72x2=1.440.97x2=1.940.72+0.97=1.69m级一c 220.80 x2=1.601.17x2=2.340.80+1.17=1.97HRB-C 250.82x2=1.641.10 x2=2.200.82+1.10=1.92m级一c 250.91x2=1.821.33x2=2.660.9

9、1+1.33=2.24C25砼30.2d端锚38d中锚中加端锚C25砼33.4d端锚46d中锚中加端锚HRB* 120.36x2=0.720.46x2=0.920.36+0.46=0.82m级一c 120.40 x2=0.800.55x2=1.100.40+0.55=0.95HRB* 140.42x2=0.840.53x2=1.060.42+0.53=0.95m级一c 140.47x2=0.940.64x2=1.280.47+0.64=1.11HRB-Z 160.48x2=0.960.61x2=1.220.48+0.61=1.09m级一c 160.53x2=1.060.74x2=1.480.5

10、3+0.74=1.27HRB-C 180.54x2=1.080.68x2=1.360.54+0.68=1.22m级一c 180.60 x2=1.200.83x2=1.660.60+0.83=1.43HRB-C 200.60 x2=1.200.76x2=1.520.60+0.84=1.50m级一c 200.67x2=1.340.92x2=1.840.67+0.92=1.59HRB-C 220.66x2=1.320.84x2=1.680.66+0.84=1.50m级一c 220.73x2=1.461.01x2=2.020.73+1.01=1.74HRB-C 250.76x2=1.520.95x2=

11、1.900.76+0.95=1.71m级一c 250.84x2=1.681.15x2=2.300.84+1.15=1.99构造钢筋计算长度锚固钢筋012c 14c16c18c20c22c25L梁下筋（II） 12d0.14x2=0.280.17x2=0.340.19x2=0.380.22x2=0.440.24x2=0.480.26x2=0.520.30 x2=0.60构造筋圆钢15d0.26x2=0.520.30 x2=0.600.34x2=0.680.38x2=0.760.43x2=0.860.47x2=0.940.53x2=1.06构造筋（II） 15d0.18x2=0.360.21x2=

12、0.420.24x2=0.480.27x2=0.540.30 x2=0.600.33x2=0.660.38x2=0.76挑下筋圆钢12d0.290.340.390.440.490.540.61挑下筋（II） 12d0.140.170.190.220.240.260.30架立筋圆钢0.23 X 2=0.460.24X2=0.480.25X2=0.500.26X2=0.520.28X2=0.560.29X2=0.580.31X2=0.62架立筋（II）0.15x2=0.300.15x2=0.300.15x2=0.300.15x2=0.300.15x2=0.300.15x2=0.300.15x2=0

13、.30锚固钢筋012e 14e16e18e20e22e25L梁下筋（II） 12d0.14x2=0.280.17x2=0.340.19x2=0.380.22x2=0.440.24x2=0.480.26x2=0.520.30 x2=0.60构造筋圆钢15d0.26x2=0.520.30 x2=0.600.34x2=0.680.38x2=0.760.43x2=0.860.47x2=0.940.53x2=1.06构造筋（II） 15d0.18x2=0.360.21x2=0.420.24x2=0.480.27x2=0.540.30 x2=0.600.33x2=0.660.38x2=0.76挑下筋圆钢1

14、2d0.290.340.390.440.490.540.61挑下筋（II） 12d0.140.170.190.220.240.260.30架立筋圆钢0.23 X 2=0.460.24X2=0.480.25X2=0.500.26X2=0.520.28X2=0.560.29X2=0.580.31X2=0.62架立筋（II）0.15x2=0.300.15x2=0.300.15x2=0.300.15x2=0.300.15x2=0.300.15x2=0.300.15x2=0.30C30砼28.6d端锚34d中锚中加端锚HRB-Z 120.34x2=0.680.41x2=0.820.34+0.41=0.7

15、5HRB-Z 140.40 x2=0.800.48x2=0.960.40+0.48=0.88HRB-C 160.46x2=0.920.54x2=1.080.46+0.54=1.00HRB-Z 180.51x2=1.020.61x2=1.220.51+0.61=1.12HRB-C 200.57x2=1.140.68x2=1.360.57+0.68=1.25HRB-Z 220.63x2=1.260.75x2=1.500.63+0.75=1.38HRB-C 250.72x2=1.440.85x2=1.700.72+0.85=1.57C30砼31.4d端锚41d中锚中加端锚m级一e 120.38x2=

16、0.760.49x2=0.980.38+0.49=0.87m级一 140.44x2=0.880.57x2=1.140.44+0.57=1.01m级一 e 160.50 x2=1.000.66x2=1.320.50+0.66=1.16m级一e 180.57x2=1.140.74x2=1.480.57+0.74=1.31m级一e 200.63x2=1.260.81x2=1.620.63+0.81=1.44m级一e 220.69x2=1.380.90 x2=1.800.69+0.90=1.59m级一e 250.79x2=1.581.03x2=2.060.79+1.03=1.82构造钢筋计算长度r=i

17、锚固钢筋C12C 14C16C18C20C22C25L梁下筋（II） 12d0.14x2=0.280.17x2=0.340.19x2=0.380.22x2=0.440.24x2=0.480.26x2=0.520.30 x2=0.60构造筋圆钢15d0.26x2=0.520.30 x2=0.600.34x2=0.680.38x2=0.760.43x2=0.860.47x2=0.940.53x2=1.06构造筋（II） 15d0.18x2=0.360.21x2=0.420.24x2=0.480.27x2=0.540.30 x2=0.600.33x2=0.660.38x2=0.76挑下筋圆钢12d0

18、.290.340.390.440.490.540.61挑下筋（II） 12d0.140.170.190.220.240.260.30架立筋圆钢0.23 X 2=0.460.24X2=0.480.25X2=0.500.26X2=0.520.28X2=0.560.29X2=0.580.31X2=0.62架立筋（II）0.15x2=0.300.15x2=0.300.15x2=0.300.15x2=0.300.15x2=0.300.15x2=0.300.15x2=0.30C20砼31.4d端锚41d中锚中加端锚HRB-C 120.38x2=0.760.49x2=0.980.38+0.49=0.87HR

19、B-C 140.44x2=0.880.57x2=1.140.44+0.57=1.01HRB-C 160.50 x2=1.000.66x2=1.320.50+0.66=1.16HRB-Z 180.57x2=1.140.74x2=1.480.57+0.74=1.31HRB-Z 200.63x2=1.260.82x2=1.640.63+0.82=1.45HRB-C 220.69x2=1.380.90 x2=1.800.69+0.90=1.59HRB-C 250.79x2=1.581.03x2=2.060.79+1.03=1.82C25砼30.2d端锚38d中锚中加端锚HRB-Z 120.35x2=0

20、.700.42x2=0.840.35+0.42=0.77HRB-Z 140.41x2=0.820.49x2=0.980.42+0.49=0.90HRB-Z 160.46x2=0.920.56x2=1.120.46+0.56=1.02HRB-C 180.52x2=1.040.63x2=1.260.52+0.63=1.15HRB-C 200.58x2=1.160.70 x2=1.400.58+0.70=1.28HRB-C 220.64x2=1.280.77x2=1.540.65+0.77=1.41HRB-Z 250.73x2=1.460.88x2=1.760.73+0.88=1.61C20砼34.

21、6d端锚49d中锚中加端锚m级一 120.42x2=0.840.59x2=1.180.42+0.59=1.01m级一 140.48x2=0.960.69x2=1.380.48+0.69=1.17m级一 160.55x2=1.100.78x2=1.560.55+0.78=1.33m级一 180.62x2=1.240.88x2=1.760.62+0.88=1.50m级一 200.69x2=1.380.98x2=1.960.69+0.98=1.67m级一 220.76x2=1.521.08x2=2.160.67+1.08=1.75m级一 250.87x2=1.741.23x2=2.460.87+1.

22、23=2.10C25砼33.4d端锚46d中锚中加端锚m级一 120.38x2=0.760.58x2=1.160.38+0.58=0.96m级一 140.45x2=0.900.59x2=1.180.45+0.59=1.04m级一 c 160.51x2=1.020.67x2=1.340.51+0.67=1.18m级一 180.57x2=1.140.76x2=1.520.57+0.76=1.33m级一c 200.64x2=1.280.84x2=1.680.64+0.84=1.48m级一c 220.70 x2=1.400.92x2=1.840.70+0.92=1.62m级一c 250.80 x2=1

23、.601.05x2=2.100.80+1.05=1.85构造钢筋计算长度r=iC30砼27.4d端锚31d中锚中加端锚C30砼29.8d端锚37d中锚中加端锚HRB-Z 120.33x2=0.660.37x2=0.740.33+0.37=0.67m级一c 120.36x2=0.720.44x2=0.880.36+0.44=0.80HRB-C 140.38x2=0.760.43x2=0.860.38+0.43=0.81m级一 140.42x2=0.840.52x2=1.040.42+0.520=0.94HRB-C 160.44x2=0.880.50 x2=1.000.44+0.50=0.94m级

24、一c 160.48x2=0.960.59x2=1.180.48+0.59=1.07HRB-C 180.49x2=0.980.56x2=1.120.49+0.56=1.05m级一c 180.54x2=1.080.67x2=1.340.54+0.67=1.21HRB-Z 200.55x2=1.100.62x2=1.240.55+0.62=1.17m级一c 200.60 x2=1.200.74x2=1.480.60+0.81=1.34HRB-Z 220.60 x2=1.200.68x2=1.360.60+0.68=1.28m级一c 220.66x2=1.320.81x2=1.620.66+0.81=

25、1.47HRB-Z 250.69x2=1.380.78x2=1.560.69+0.78=1.47m级一c 250.75x2=1.500.93x2=1.860.75+0.93=1.68C35砼26.6d端锚29d中锚中加端锚C35砼28.6d端锚34d中锚中加端锚HRB-Z 120.32x2=0.640.35x2=0.700.32+0.35=0.67m级一c 120.34x2=0.680.41x2=0.820.34+0.41=0.75HRB-C 140.37x2=0.740.41x2=0.820.37+0.41=0.78m级一c 140.40 x2=0.800.48x2=0.960.40+0.4

26、8=0.88HRB-C 160.43x2=0.860.46x2=0.920.43+0.46=0.89m级一c 160.46x2=0.920.54x2=1.080.46+0.54=1.00HRB-Z 180.48x2=0.960.52x2=1.040.48+0.52=1.00m级一c 180.51x2=1.020.61x2=1.220.51+0.61=1.12HRB-Z 200.53x2=1.060.58x2=1.160.53+0.58=1.11m级一c 200.57x2=1.140.68x2=1.360.57+0.68=1.25HRB-Z 220.59x2=1.180.64x2=1.280.5

27、9+0.64=1.23m级一c 220.63x2=1.260.75x2=1.500.63+0.75=1.38HRB-Z 250.67x2=1.340.73x2=1.460.67+0.73=1.40m级一c 250.72x2=1.440.85x2=1.700.72+0.85=1.57构造钢筋计算长度锚固钢筋012c 14c16c18c20c22c25L梁下筋（II） 12d0.14x2=0.280.17x2=0.340.19x2=0.380.22x2=0.440.24x2=0.480.26x2=0.520.30 x2=0.60构造筋圆钢15d0.26x2=0.520.30 x2=0.600.34

28、x2=0.680.38x2=0.760.43x2=0.860.47x2=0.940.53x2=1.06构造筋（II） 15d0.18x2=0.360.21x2=0.420.24x2=0.480.27x2=0.540.30 x2=0.600.33x2=0.660.38x2=0.76挑下筋圆钢12d0.290.340.390.440.490.540.61挑下筋（II） 12d0.140.170.190.220.240.260.30架立筋圆钢0.23 X 2=0.460.24X2=0.480.25X2=0.500.26X2=0.520.28X2=0.560.29X2=0.580.31X2=0.62架

29、立筋（II）0.15x2=0.300.15x2=0.300.15x2=0.300.15x2=0.300.15x2=0.300.15x2=0.300.15x2=0.30锚固钢筋C12C 14C16C18C20C22C25L梁下筋（II） 12d0.14x2=0.280.17x2=0.340.19x2=0.380.22x2=0.440.24x2=0.480.26x2=0.520.30 x2=0.60构造筋圆钢15d0.26x2=0.520.30 x2=0.600.34x2=0.680.38x2=0.760.43x2=0.860.47x2=0.940.53x2=1.06构造筋（II） 15d0.18

30、x2=0.360.21x2=0.420.24x2=0.480.27x2=0.540.30 x2=0.600.33x2=0.660.38x2=0.76挑下筋圆钢12d0.290.340.390.440.490.540.61挑下筋（II） 12d0.140.170.190.220.240.260.30架立筋圆钢0.23 X 2=0.460.24X2=0.480.25X2=0.500.26X2=0.520.28X2=0.560.29X2=0.580.31X2=0.62架立筋（II）0.15x2=0.300.15x2=0.300.15x2=0.300.15x2=0.300.15x2=0.300.15x

31、2=0.300.15x2=0.30C40砼25.4d端锚26d中锚中加端锚HRB-C 120.30 x2=0.600.31x2=0.620.30+0.31=0.61HRB-e 140.36x2=0.720.36x2=0.720.36+0.36=0.72HRB* 160.41x2=0.820.42x2=0.840.41+0.42=0.83HRB-e 180.46x2=0.920.47x2=0.940.46+0.47=0.93HRB* 200.51x2=1.020.52x2=1.040.51+0.52=1.03HRB-C 220.56x2=1.120.57x2=1.140.56+0.57=1.13

32、HRB* 250.64x2=1.280.65x2=1.300.64+0.65=1.29C40砼27.4d端锚31d中锚中加端锚m级一 120.33x2=0.660.37x2=0.740.33+0.37=0.70m级一 140.38x2=0.760.43x2=0.860.38+0.43=0.81m级一 c 160.44x2=0.880.50 x2=1.000.44+0.50=0.94m级一 180.49x2=0.980.56X2=1.120.49+0.56=1.05m级一c 200.55x2=1.100.62x2=1.240.55+0.62=1.17m级一c 220.60 x2=1.200.68

33、x2=1.360.60+0.68=1.28m级一c 250.69x2=1.380.78x2=1.560.69+0.78=1.47构造钢筋计算长度r=iC20砼30.6d端锚39d中锚中加端锚C20砼33.4d端锚46d中锚中加端锚HRB-C 120.37x2=0.740.47x2=0.940.37+0.47=0.84m级一 120.40 x2=0.800.55x2=1.100.40+0.55=0.95HRB-C 140.43x2=0.860.55x2=1.100.43+0.55=0.98m级一 140.47x2=0.940.64x2=1.280.47+0.64=1.11HRB-C 160.49

34、x2=0.980.62x2=1.240.49+0.62=1.11m级一 160.53x2=1.060.74x2=1.480.53+0.74=1.27HRB-C 180.55x2=1.100.70 x2=1.400.55+0.70=1.25m级一 180.60 x2=1.200.83x2=1.660.60+0.83=1.43HRB-C 200.61x2=1.220.78x2=1.560.61+0.78=1.39m级一c 200.67x2=1.340.92x2=1.840.67+0.92=1.59HRB-Z 220.67x2=1.340.86x2=1.720.67+0.86=1.53m级一 220

35、.73x2=1.461.01x2=2.020.73+1.01=1.74HRB-Z 250.77x2=1.540.98x2=1.960.77+0.98=1.75m级一c 250.84x2=1.681.15x2=2.300.84+1.15=1.99C25砼28.6d端锚34d中锚中加端锚C25砼31d端锚40d中锚中加端锚HRB-C 120.34x2=0.680.41x2=0.820.34+0.41=0.75m级一c 120.37x2=0.740.48x2=0.960.37+0.48=0.85HRB-C 140.40 x2=0.800.48x2=0.960.40+0.48=0.88m级一c 140

36、.43x2=0.860.56x2=1.120.43+0.56=0.99HRB-Z 160.46x2=0.920.54x2=1.080.46+0.54=1.00m级一c 160.50 x2=1.000.64x2=1.280.50+0.64=1.14HRB-C 180.51x2=1.020.61x2=1.220.51+0.61=1.12m级一c 180.56x2=1.120.72x2=1.440.56+0.72=1.28HRB-C 200.57x2=1.140.68x2=1.360.57+0.68=1.25m级一c 200.62x2=1.240.80 x2=1.600.62+0.80=1.42HR

37、B-Z 220.63x2=1.260.75x2=1.500.63+0.75=1.38m级一c 220.68x2=1.360.882=1.760.68+0.88=1.56HRB-e 250.72x2=1.440.85x2=1.700.72+0.85=1.57m级一c 250.78x2=1.561.00 x2=2.000.78+1.00=1.78锚固钢筋012c 14c16c18c20c22c25L梁下筋（II） 12d0.14x2=0.280.17x2=0.340.19x2=0.380.22x2=0.440.24x2=0.480.26x2=0.520.30 x2=0.60构造筋圆钢15d0.26

38、x2=0.520.30 x2=0.600.34x2=0.680.38x2=0.760.43x2=0.860.47x2=0.940.53x2=1.06构造筋（II） 15d0.18x2=0.360.21x2=0.420.24x2=0.480.27x2=0.540.30 x2=0.600.33x2=0.660.38x2=0.76挑下筋圆钢12d0.290.340.390.440.490.540.61挑下筋（II） 12d0.140.170.190.220.240.260.30架立筋圆钢0.23 X 2=0.460.24X2=0.480.25X2=0.500.26X2=0.520.28X2=0.56

39、0.29X2=0.580.31X2=0.62架立筋（II）0.15x2=0.300.15x2=0.300.15x2=0.300.15x2=0.300.15x2=0.300.15x2=0.300.15x2=0.30II级螺纹钢（四级抗震纵向拉筋锚LaE ） -m级螺纹钢表一7构造钢筋计算长度r=iII级螺纹钢一（四级抗震纵向拉筋锚LaE ） - UI级螺纹钢表8C30砼27d端锚30d中锚中加端锚HRB-C 120.32x2=0.640.36x2=0.720.32+0.36=0.68HRB-C 140.38x2=0.760.42x2=0.840.38+0.42=0.80HRB* 160.43x2

40、=0.860.48x2=0.940.43+0.48=0.91HRB* 180.49x2=0.980.54x2=1.080.49+0.54=1.03HRB-C 200.54x2=1.080.60 x2=1.200.54+0.60=1.14HRB-C 220.59x2=1.180.66x2=1.320.59+0.66=1.25HRB* 250.68x2=1.360.75x2=1.500.68+0.75=1.43C35砼25.8d端锚27d中锚中加端锚HRB-e 120.31x2=0.620.32x2=0.640.31+0.32=0.63HRB* 140.36x2=0.720.38x2=0.760.

41、36+0.38=0.74HRB* 160.41x2=0.820.43x2=0.860.41+0.43=0.84HRB* 180.46x2=0.920.49x2=0.980.46+0.49=0.95HRB* 200.52x2=1.040.54x2=1.080.52+0.54=1.06HRB* 220.57x2=1.140.59x2=1.180.57+0.59=1.16HRB-e 250.65x2=1.300.68x2=1.360.65+0.68=1.33C30砼29.4d端锚36d中锚中加端锚m级一c 120.35x2=0.700.43x2=0.860.35+0.43=0.78m级一z 140.

42、41x2=0.820.50 x2=1.000.41+0.50=0.91m级一c 160.47x2=0.940.58x2=1.160.47+0.58=1.05m级一c 180.53x2=1.060.65x2=1.300.53+0.65=1.18m级一c 200.59x2=1.180.72x2=1.440.59+0.72=1.31m级一c 220.65x2=1.300.79x2=1.580.65+0.79=1.44m级一c 250.74x2=1.480.90 x2=1.800.74+0.90=1.64C35砼28.2d端锚33d中锚中加端锚m级一c 120.34x2=0.680.40 x2=0.8

43、00.34+0.40=0.74m级一c 140.39x2=0.780.46x2=0.920.39+0.46=0.85m级一c 160.45x2=0.900.53x2=0.680.45+0.53=0.98m级一c 180.51x2=1.020.59x2=1.180.51+0.59=1.10m级一c 200.56x2=1.120.66x2=1.320.56+0.66=1.22m级一c 220.62x2=1.240.73x2=1.460.62+0.73=1.35m级一c 250.71x2=1.420.83x2=1.660.71+0.83=1.54构造钢筋计算长度锚固钢筋012c 14c16c18c20c22c25L梁下筋（II） 12d0.14x2=0.280.17x2=0.340.19x2=0.380.22x2=0.440.24x2=0.480.26x2=0.520.30 x2=0.60构造筋圆钢15d0.26x2=0.520.30 x2=0.600.34x2=0.680.38x2=0.760.43x2=0.860.47x2=0.940.53x2=1.06构造筋（II） 15d0.18x2=0.360.21x2=0.420.24x2=0.480.27x2=0.540.30 x2=0.600.33x2=0.660.38x2=0.76挑下筋圆钢12d0.290