一二级抗震纵向拉筋锚固LaE.docx

1、一二级抗震纵向拉筋锚固LaE使 用 说 明1、本表计算数据长度均以“M”为单位，根据03G1011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03G1011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

2、6.5=0.16m；8=0.20m；10=0.25m；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：（1）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=25.8d。（2）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=25d；C35砼=23

3、d；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。（3）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 整吊筋计算长度（指一根钢筋、梁厚按250计算） 表1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（）121.932.072.222.362.5

4、02.642.782.92梁吊筋（）142.012.152.302.442.582.722.863.00梁吊筋（）162.092.232.382.522.662.802.943.08梁吊筋（）182.172.312.462.602.742.883.023.16梁吊筋（）202.252.392.542.682.822.963.103.24梁吊筋（）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。构造钢筋计算长度锚固钢筋12141618202225L梁下筋（）12d0.142=0.

5、280.172=0.340.192=0.380.222=0.440.242=0.480.262=0.520.302=0.60构造筋圆钢15d0.262=0.520.302=0.600.342=0.680.382=0.760.432=0.860.472=0.940.532=1.06构造筋（）15d0.182=0.360.212=0.420.242=0.480.272=0.540.302=0.600.332=0.660.382=0.76挑下筋圆钢12d0.290.340.390.440.490.540.61挑下筋（）12d0.140.170.190.220.240.260.30架立筋圆钢0.232

6、=0.460.242=0.480.252=0.500.262=0.520.282=0.560.292=0.580.312=0.62架立筋（）0.152=0.300.152=0.300.152=0.300.152=0.300.152=0.300.152=0.300.152=0.30级螺纹钢（一、二级抗震纵向拉筋锚LaE ）级螺纹钢 表2C20砼30.6d端锚39d中锚中加端锚C20砼33.4端锚46中锚中加端锚HRB-120.392=0.780.532=1.060.39+0.53=0.92级120.432=0.860.642=1.280.43+0.64=1.07HRB-140.462=0.920

7、.622=1.240.46+0.62=1.08级140.512=1.020.742=1.480.51+0.74=1.25HRB-160.522=1.040.702=1.400.52+0.70=1.22级160.582=1.160.852=1.700.58+0.85=1.43HRB-180.592=1.180.792=1.580.59+0.79=1.38级180.652=1.300.952=1.900.65+0.95=1.60HRB-200.652=1.300.882=1.760.65+0.88=1.53级200.722=1.441.062=2.120.72+1.06=1.78HRB-220.7

8、22=1.440.972=1.940.72+0.97=1.69级220.802=1.601.172=2.340.80+1.17=1.97HRB-250.822=1.641.102=2.200.82+1.10=1.92级250.912=1.821.332=2.660.91+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-120.362=0.720.462=0.920.36+0.46=0.82级120.402=0.800.552=1.100.40+0.55=0.95HRB-140.422=0.840.532=1.060.42+0.53=0.

9、95级140.472=0.940.642=1.280.47+0.64=1.11HRB-160.482=0.960.612=1.220.48+0.61=1.09级160.532=1.060.742=1.480.53+0.74=1.27HRB-180.542=1.080.682=1.360.54+0.68=1.22级180.602=1.200.832=1.660.60+0.83=1.43HRB-200.602=1.200.762=1.520.60+0.84=1.50级200.672=1.340.922=1.840.67+0.92=1.59HRB-220.662=1.320.842=1.680.66

10、+0.84=1.50级220.732=1.461.012=2.020.73+1.01=1.74HRB-250.762=1.520.952=1.900.76+0.95=1.71级250.842=1.681.152=2.300.84+1.15=1.99构造钢筋计算长度锚固钢筋12141618202225L梁下筋（）12d0.142=0.280.172=0.340.192=0.380.222=0.440.242=0.480.262=0.520.302=0.60构造筋圆钢15d0.262=0.520.302=0.600.342=0.680.382=0.760.432=0.860.472=0.940.5

11、32=1.06构造筋（）15d0.182=0.360.212=0.420.242=0.480.272=0.540.302=0.600.332=0.660.382=0.76挑下筋圆钢12d0.290.340.390.440.490.540.61挑下筋（）12d0.140.170.190.220.240.260.30架立筋圆钢0.232=0.460.242=0.480.252=0.500.262=0.520.282=0.560.292=0.580.312=0.62架立筋（）0.152=0.300.152=0.300.152=0.300.152=0.300.152=0.300.152=0.300.1

12、52=0.30级螺纹钢（一、二级抗震纵向拉筋锚LaE ）级螺纹钢 表3C30砼28.6d端锚34d中锚中加端锚C30砼31.4d端锚41d中锚中加端锚HRB-120.342=0.680.412=0.820.34+0.41=0.75级120.382=0.760.492=0.980.38+0.49=0.87HRB-140.402=0.800.482=0.960.40+0.48=0.88级140.442=0.880.572=1.140.44+0.57=1.01HRB-160.462=0.920.542=1.080.46+0.54=1.00级160.502=1.000.662=1.320.50+0.66=1.16HRB-180.512=1.020.612=1.220.51+0.61=1.12级180.572=1.140.742=1.480.57+0.74=1.31HRB-200.572=1.140.682=1.360.57+0.68=1.25级200.632=1.260.812=1.620.63+0.81=1.44HRB-220.632=1.260.752=1.500.63+0.75=1.38级220.692=1.380.902=1.800.69+0.90=1.59HRB-