钢结构螺栓连接规范

.钢结构高强度螺栓连接施工工艺标准高强度螺栓连接副的安装1.高强度螺栓长度应按下式计算 L=L+L 式中L 连接板层总厚度 L附加长度 L=m+ns+3p M高强度螺母公称厚度； N垫圈个数，扭剪型高强度螺栓为1，高强度大六角螺栓为2； S高强度垫圈公称厚度； P螺纹的螺距螺栓螺母性能表1钢结构用高强度螺栓连接副型号、规格、类型名称性能等级规格连接副组成GB/T1228-91钢结构用高强度大六角头螺栓10.9S8.8SM12-M30一件螺栓；一件螺母；二件垫圈GB/T1229-91钢结构用高强度大六角螺母GB/T1230-91钢结构用高强度垫圈GB/T1231-91钢结构用高强度大六角头螺栓、大六角螺母、垫圈技术条件GB/T3632-1995钢结构用扭剪型高强度螺栓连接副10.9SM16-M24一件螺栓；一件螺母；一件垫圈GB/T3633-1995钢结构用扭剪型高强度螺栓连接副技术条件2.材料类型性能等级螺纹规格选用材料螺栓10.9SM12M2420MntiBM27M3035VB8.8SM12M1635#M20M2420MnTibM27M3035VB螺母8H10HM12M3035#垫圈3545HRC123045#3.材料的化学成分材料C%Si%Mn%Ti%V%B%P%S%20MnTiB0.170.240.170.371.301.600.040.1000.00050.00350.0350.03535VB0.310.370.170.370.500.900.050.120.0010.0040.040.0435#0.320.400.170.370.500.900.0350.03545#0.420.500.170.370.500.900.0350.0354.GB/T1228-91钢结构用高强度大六角头螺栓型式尺寸螺纹规格dM12 M16M20M22M24M27M30螺距p1.7522.52.5333.5Cmax0.80.80.80.80.80.80.8min0.40.40.40.40.40.40.4damax15.2319.2324.3226.3228.3232.8435.84dsmax12.4316.4320.5222.5224.5227.8430.84min11.7515.5719.4821.4823.4826.16.29.16dwmin19.221.931.433.338.042.846.5emin22.7829.5637.2939.5545.2050.8555.37k公称7.51012.514151718.7max7.9510.7513.4014.9015.9017.9019.75min7.059.2511.6013.1014.1016.1017.65rmin1.01.01.51.51.52.02.0smax21273436414650min20.1620.163335404549bL公称4545555565657070757580808585公称25303035354040454550505555605.GB/T1229-91钢结构用高强度大六角螺母型尺寸螺纹规格DM12M16M20M22M24M27M30螺距P1.7522.52.5333.5cmax0.80.80.80.80.80.80.8min0.40.40.40.40.40.40.4damax1317.321.623.825.929.132.4min12162022242730dwmin19.224.931.433.338.042.846.5emin22.7829.5637.2939.5545.2050.8555.37mmax12.317.120.723.624.227.630.7min11.8716.419.422.322.926.329.1smax21273436414650min20.1626.1633354045496.GB/T1230-91 钢结构用高强度垫圈型式尺寸规格（螺纹大径）12162022242730d 1max13.4317.4321.5223.5225.5228.5231.52min13172123252831d 2max25334042475256min23.731.438.440.445.450.154.1s公称3.04.04.05.05.05.05.0max3.84.84.85.85.85.85.8min2.53.53