钢筋搭接要求(最新)

附表1钢筋叠合长度的要求抗震性等级混凝土强度等级钢筋种类(一般钢筋)钢筋直径(mm )纵向拉伸钢筋的捆扎长度(lle )GB50204-2002 (规格)03 G101-1 (图集)规范和图集搭接长度之差纵向拉伸钢筋的最小锚固长度1.21.15最小锚固长度纵向拉伸钢筋抗震锚固长度1.4抗震锚固长度(d )(广告)(d )(广告)规格-图集(cm )一级二级C20系列HPB235835 d48.3 d38.636 d50.4 d40.3-1.71048.350.4-2.1HRB3351245 d62.1 d74.544 d61.6 d73.90.61486.986.20.71699.498.60.818111.8110.90.920124.2123.21.0HRB400RRB400855 d75.9 d60.753 d74.2 d59.41.31075.974.21.71291.189.02.114106.3103.92.416121.4118.72.718136.6133.63.020151.8148.43.4一级二级C25系列HPB235835 d48.3 d38.631 d43.4 d34.73.91048.343.44.9HRB3351245 d62.1 d74.538 d53.2 d63.810.71486.974.512.41699.485.114.318111.895.816.020124.2106.417.8HRB400RRB400855 d75.9 d60.746 d64.4 d51.59.21075.964.411.51291.177.313.814106.390.216.116121.4103.018.418136.6115.920.720151.8128.823.0一级二级c300HPB235830 d41.4 d33.127 d37.8 d30.22.91041.437.83.6HRB3351235 d48.3 d58.034 d47.6 d57.10.91467.666.61.01677.376.21.11886.985.71.22096.695.21.4钢筋叠合长度的要求抗震性等级混凝土强度等级钢筋种类(一般钢筋)钢筋直径(mm )纵向拉伸钢筋的捆扎长度(lle )GB50204-2002 (规格)03 G101-1 (图集)规范和图集搭接长度之差纵向拉伸钢筋的最小锚固长度1.21.15最小锚固长度纵向拉伸钢筋抗震锚固长度1.4抗震锚固长度(d )(广告)(d )(广告)规格-图集(cm )一级二级c300HRB400RRB400840 d55.2 d44.241 d57.4 d45.9-1.71055.257.4-2.21266.268.9-2.71477.380.4-3.11688.391.8-3.51899.4103.3-3.920110.4114.8-4.4一级二级C35HPB235830 d41.4 d33.125 d35 d28.05.11041.435.06.4HRB3351235 d48.3 d58.031 d43.4 d52.15.91467.660.86.81677.369.47.91886.978.18.82096.686.89.8HRB400RRB400840d55.2 d44.237 d51.8 d41.42.81055.251.83.41266.262.24.01477.372.54.81688.382.95.41899.493.26.220110.4103.66.8一级二级C40HPB235825 d34.5 d27.623d32.2d25.81.81034.532.22.3HRB3351230d41.4d49.702月29日40.6d48.71.01458.056.81.21666.265.01.21874.573.11.42082.881.21.6HRB400RRB400835d48.3 d38.634d47.6d38.10.51048.347.60.71258.057.10.91467.666.61.01677.376.21.11886.985.71.22096.695.21.4说明： 1、钢筋的重叠接头面积率均在25%以上、50%以下考虑。2、表中GB50204-2002规定的搭接长度的计算公式是lle=1.21.15纵拉钢筋的最小搭接长度。 其中1.2钢筋搭接接头面积率的修正系数，1.15为抗震系数的纵向拉伸钢筋的最小搭接长度可参照GB50204-2002附录b表B.0.1。3、表中以03G101-1规定，搭接长度的计算式为lle=1.4lae。 其中，1.4是纵向拉伸钢筋重叠接头面积的百分率修理正系数，lae是纵拉钢筋的抗震锚长度，可以调查03G101-1。4、普通工程搭接长度根据设计规定的做法，按照图纸集或规范。参加长城杯评定的工程，根据“高不低”的原则，搭接长度取较大的值。 根据长城杯的检查要求，墙是垂直的必须保证三条水平条纹在条纹搭接长度范围内通过。 水平筋间距20cm，水平起始筋5cm，包裹区内应