钢筋搭接长度要求(路桥)

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1、.钢筋搭接长度要求抗震等级混凝土强度等级钢筋种类钢筋直径（mm）纵向受拉钢筋绑扎搭接长度（110）GB50204-2022（规范）03G101-1（图集）规范与图集搭接长度差值纵向受拉钢筋最小锚固长度1.2x1.15x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CHPB235Φ835d48.3d38.636d50.4d40.3-1.7Φ1048.350.4-2.1HRB335Φ1245d62.1d74.544d61.6d73.9+0.6Φ1486.986.2+0.7Φ1699.498

2、.6+0.8Φ18111.8110.9+0.9Φ20124.2123.2+1.0HRB400RRB400Φ855d75.9d60.753d74.2d59.4+1.3Φ1075.974.2+1.7Φ1291.189.0+2.1Φ14106.3103.9+2.4Φ16121.4118.7+2.7Φ18136.6133.6+3.0Φ20151.8148.4+3.4一级二级C25HPB235Φ835d48.3d38.631d43.4d34.7+3.9Φ1048.343.4+4.9HRB335Φ1245d62.1d74.538d53.2d63.8+10.7Φ

3、1486.974.5+12.4Φ1699.485.1+14.3Φ18111.895.8+16.0Φ20124.2106.4+17.8HRB400RRB400Φ855d75.9d60.746d64.4d51.5+9.2Φ1075.964.4+11.5Φ1291.177.3+13.8Φ14106.390.2+16.1Φ16121.4103.0+18.4Φ18136.6115.9+20.7Φ20151.8128.8+23.0一级二级C30HPB235Φ830d41.4d33.127d37.8d30.2+2.9Φ1041.437.8+3.6HRB335Φ1

4、235d48.3d58.034d47.6d57.1+0.9Φ1467.666.6+1.0Φ1677.376.2+1.1Φ1886.985.7+1.2Φ2096.695.2+1.4word教育资料.钢筋搭接长度要求抗震等级混凝土强度等级钢筋种类钢筋直径（mm）纵向受拉钢筋绑扎搭接长度（110）GB50204-2022（规范）03G101-1（图集）规范与图集搭接长度差值纵向受拉钢筋最小锚固长度1.2x1.15x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C30HRB400RRB400Φ

5、840d55.2d44.241d57.4d45.9-1.7Φ1055.257.4-2.2Φ1266.268.9-2.7Φ1477.380.4-3.1Φ1688.391.8-3.5Φ1899.4103.3-3.9Φ20110.4114.8-4.4一级C35HPB235Φ830d41.4d33.125d35d28.0+5.1word教育资料.二级Φ1041.435.0+6.4HRB335Φ1235d48.3d58.031d43.4d52.1+5.9Φ1467.660.8+6.8Φ1677.369.4+7.9Φ1886.978.1+8.8Φ2096.68

6、6.8+9.8HRB400RRB400Φ840d55.2d44.237d51.8d41.4+2.8Φ1055.251.8+3.4Φ1266.262.2+4.0Φ1477.372.5+4.8Φ1688.382.9+5.4Φ1899.493.2+6.2Φ20110.4103.6+6.8一级二级C40HPB235Φ825d34.5d27.623d32.2d25.8+1.8Φ1034.532.2+2.3HRB335Φ1230d41.4d49.729d40.6d48.7+1.0Φ1458.056.8+1.2Φ1666.265.0+1.2Φ1874.573.1

7、+1.4Φ2082.881.2+1.6HRB400RRB400Φ835d48.3d38.634d47.6d38.1+0.5Φ1048.347.6+0.7Φ1258.057.1+0.9Φ1467.666.6+1.0Φ1677.376.2+1.1Φ1886.985.7+1.2Φ2096.695.2+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

8、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