钢筋抗震绑扎搭接长度

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1、抗抗震等级砼强度等级钢筋种类(配套钢筋)钢筋直径(mm)纵向受拉钢筋绑扎搭接长度GB50204-2002（规范）规范与图集搭接长度差值纵向受拉钢筋最小锚固长度1.2X1.15最小锚固长度纵向受拉钢筋抗震锚固长度1.4X抗震锚固长度(d)(cm)(d)(cm)规范-图集(cm)一级二级C20HPB235Ф835d48.3d38.636d50.4d40.3-1.7Ф1048.350.4-2.1HPB3351245d62.1d74.544d61.6d73.9+0.61486.986.2+0.71699.498.6+0.818111.8110.9+0.920124.2123.2+1.0HPB40085

2、5d75.9d53d74.2d59.4+1.31074.2+1.71289.0+2.114103.9+2.416118.7+2.718133.6+3.020148.4+3.4C25HPB235Ф835d48.3d38.636d43.4d34.7+3.9Ф1048.343.4+4.9HPB3351245d62.1d74.538d53.2d63.8+10.71486.974.5+12.41699.485.1+14.318111.895.8+16.020124.2106.4+17.8HPB400855d75.9d60.746d64.4d51.5+9.21075.964.4+11.51291.177.

3、3+13.814106.390.2+16.116121.4103.0+18.418136.6115.9+20.720151.8128.8+23.0C30HPB235Ф830d41.4d33.127d37.8d30.2+2.9Ф1041.437.8+3.6HPB3351235d48.3d58.034d47.6d57.1+0.91467.666.6+1.01677.376.2+1.1纵向受拉钢筋绑扎搭接长度抗抗震等级GB50204-2002（规范）规范与图1.2X1.15最锚固长度1.4X抗震锚固长度集搭接长度差值(d)(cm)(d)(cm)规范-图集(cm)一级二级C30HPB3351835d4

4、8.3d86.934d47.6d85.7+1.22096.695.2+1.4HPB400HPB400840d55.2d44.241d57.4d45.9-1.71055.257.4-2.21266.268.9-2.71477.380.4-3.11688.391.8-3.51899.4103.3-3.920110.4114.8-4.4C35HPB235Ф830d41.4d33.125d35d28.0+5.1Ф1041.435.0+6.4HPB3351235d48.3d58.031d43.4d52.1+5.91467.660.8+6.81677.369.4+7.91886.978.1+8.82096

5、.686.8+9.8HPB400840d55.2d44.237d51.8d41.4+2.81055.251.8+3.41266.262.2+4.01477.372.5+4.81688.382.9+5.41899.493.2+6.220110.4103.6+6.8C40HPB235Ф8250d34.5d27.623d32.2d25.8+1.8Ф1034.532.2+2.3HPB3351230d41.4d49.729d40.6d48.7+1.01458.056.8+1.21666.265.0+1.21874.573.1+1.42082.882.1+1.6HPB400835d48.3d38.634d

6、47.6d38.1+0.51048.347.6+0.71258.057.1+0.91467.666.6+1.01677.376.2+1.11886.985.7+1.22096.695.2+1.4说明:1、钢筋搭接接头面积百分率全部按大于25%，但不大于50%考虑。2、表中按GB50204-2002规定，搭接长度的计算公式为lle=1.2×1.15×纵向受拉钢筋最小搭接长度。其中1.2为钢筋搭接接头面积百分率修正系数，1.15为抗震系数；纵向受拉钢筋最小搭接长度可查阅GB50204-2002 附录B 表B.0.1。3、表中按03G101-1规定，搭接长度的计算公式为：lle=1.4×lae。 其

7、中1.4为纵向受拉钢筋搭接接头面积百分率修正系数，lae为纵向受拉钢筋抗震锚固长度，可查阅03G101-1。4、普通工程的搭接长度按照设计指定的做法，可以依据图集，也可以依据规范。5、两根直径不同的钢筋搭接长度，以较细钢筋的直径计算。6、表中搭接长度(cm)的取值计算后，按“四舍五入”原则保留一位小数