2023钢结构用高强度大六角头螺栓连接副

钢结构用高强度大六角头螺栓连接副IIII目次范围 1规性用件 1术和义 1螺连副式 1尺寸 2技要求 10试方法 13检规则 15标、志标、装和量验告 16附录A(范)35VB钢 22PAGEPAGE1钢结构用高强度大六角头螺栓连接副范围规范性引用文件期的引用文件，仅该日期对应的版本适用于本文件；不注日期的引用文件，其最新版本()GB/T2 紧件外零件GB/T90.1 固件检查GB/T196 通纹本尺寸GB/T197 通纹GB/T228.1 金属材料拉伸试验第1GB/T229 GB/T230.1 1GB/T699 GB/T1237 GB/T3077 GB/T3098.1 紧件性能螺、钉螺柱GB/T3103.1 紧件差螺、钉螺和GB/T3103.3 紧件差平圈GB/T4340.1152765277GB/T5779.1紧固件表面缺陷螺栓、螺钉和螺柱一般要求GB/T5779.2 紧固件表面缺陷螺母GB/T6478 JJG707—2014 术语和定义本文件没有需要界定的术语和定义。螺栓连接副型式螺栓连接副应包括一个螺栓、一个螺母、一个垫圈A、一个垫圈B，其型式应符合图1的规定。标引序号说明：1——螺栓；2——垫圈A；3——垫圈B4——螺母。1尺寸螺栓1~，尺寸代号和标注应符合GB/T5276末端尺寸和标注应符合GB/T2图2螺栓表1栓寸 单为米螺纹规格𝑑M12M16M20（M22）aM24（M27）aM30（M33）aM36𝑃1.7522.52.5333.53.54cmax0.80.80.80.80.80.80.80.80.8min0.40.40.40.40.40.40.40.40.4damax15.2319.2324.3226.3228.3232.8435.8439.8442.84dsmax12.4316.4320.5222.5224.5227.8430.843437min11.5715.5719.4821.4823.4826.1629.163235dwmin19.224.931.433.338.042.846.551.155.9emin22.7829.5637.2939.5545.2050.8555.3760.7966.44k公称7.51012.514151718.72122.5max7.9510.7513.4014.9015.9017.9019.7522.0523.55min7.059.2511.6013.1014.1016.1017.6519.9521.45k’min4.96.58.19.29.911.312.413.9715.02rmin1.01.01.51.51.52.02.02.52.5smax212734364146505560min20.1626.16333540454953.858.8a尽可能不采用括号内的规格。PAGEPAGE4表2栓螺杆长和夹长度 单为毫米螺纹规格𝑑M12M16M20（M22）aM24（M27）aM30(M33)aM36lc无螺纹杆部长度ls和夹紧长度lgb公称minmaxlsminlgmaxlsminlgmaxlsminlgmaxlsminlgmaxlsminlgmaxlsminlgmaxlsminlgmaxlsminlgmaxlsminlgmax3533.7536.254.8104038.7541.259.8154543.7546.259.8159155048.7551.2514.82014207.5155553.556.519.825142012.5207.5156058.561.524.830192517.52512.5206156563.566.529.835243017.52517.52511206157068.571.534.840293522.53017.525162511204.5157573.576.539.845344027.53522.530162516259.5204.5158078.581.5394532.54027.5352130162514.5259.5208583.2586.75445037.54532.5402635213014.52514.5258209088.2591.75495542.55037.5453140263519.53014.52513259593.2596.75546047.55542.5503645314024.53519.530132510098.25101.75596552.56047.5554150364529.54024.535183010108.25111.75697562.57057.5655160465539.55034.5452840120118.25121.75798572.58067.5756170566549.56044.5553850130128132899582.59077.5857180667559.57054.565486014013814292.510087.5958190768569.58064.5755870150148152102.511097.510591100869579.59074.5856880160156164112.5120107.51151011109610589.510084.5957890170166174117.512511112010611599.511094.510588100180176184127.5135121130116125109.5120104.511598110190185.4194.6137.5145131140126135119.5130114.5125108120200195.4204.6147.5155141150136145129.5140124.5135118130220215.4224.6167.5175161170156165149.5160144.5155138150240235.4244.6181190179185169.5180164.5175158170260254.8265.2196205189.5200184.5195178190280274.8285.2209.5220204.5215198210300294.8305.2229.5240224.5235218230320314.3325.7244.5255238250340334.3345.7258270360354.3365.7278290a尽可能不采用括号内的规格。blgmax=l公称—b参考；lsmin=lgmax—3P；c当l公称＞100mm时，螺栓长度可根据用户需求按5mm级数递增，建议用户采用。表3螺栓螺纹长度螺纹dM12M16M20（M22）aM24（M27）aM30（M33）aM36M12M16M20（M22）aM24（M27）aM30（M33）aM36公称mm（b）mm每1000个钢螺栓的理论质量kg352547.64052.145303055.6109.9503560.1117.8202.255354064.5124.3214.6263.6604569.0132.2226.9278.5350.365405073.4140.1237.2293.4368.1494.170455577.8148.0249.5306.1385.8516.6647.275506082.3155.9261.8321.0400.6539.1675.0863.1805565163.8274.2335.9418.4558.2702.7896.71094.38560171.7286.5350.8436.1580.7726.1930.31134.29065179.6298.8365.8453.9603.1753.9959.11174.29570187.5311.2380.7471.6625.6781.6992.71208.2100195.4323.5395.6489.4648.1809.41026.21248.2110211.1348.2425.4524.9693.0864.91093.41328.1120226.9372.8455.3560.4738.0920.31160.51408.0130242.7397.5485.1595.9782.9975.81227.71487.9140422.1515.0631.4827.91031.31294.81567.8150446.8544.8666.9872.81086.81361.91647.7160471.5574.6702.5917.71142.31429.11727.6170604.5738.0962.71197.81496.21807.5180634.3773.51007.61253.31563.41887.4190664.2809.01052.61308.81630.51967.3200694.0844.51097.51364.31697.62047.2220753.7915.51187.41475.21831.92207.0240986.61277.31586.21966.22366.82601367.21697.22100.52526.62801808.22234.82686.43001919.12369.12846.23202503.33006.03403165.83603325.6注：根据用户的要求，螺栓长度可超出表中的规定。a尽可能不采用括号内的规格。PAGEPAGE10螺母螺母的型式按图3，尺寸按表4，尺寸代号和标注应符合GB/T5276的规定。图3螺母表4螺尺寸 为毫米螺纹规格DM12M16M20（M22）aM24（M27）aM30（M33）aM36P1.7522.52.5333.53.54damax1317.321.623.825.929.132.435.638.9min121620222427303336dwmin19.224.931.433.338.042.846.551.155.9emin22.7829.5637.2939.5545.2050.8555.3760.7966.44mmax12.317.120.723.624.227.630.733.6536.60min11.8716.419.422.322.926.329.132.0535.00m’min8.311.513.615.616.018.420.422.424.5cmax0.80.80.80.80.80.80.80.80.8min0.40.40.40.40.40.40.40.40.4smax212734364146505560min20.1626.16333540454953.858.8支承面对螺纹轴线的垂直度公差0.290.380.470.500.570.640.700.760.84每1000个钢螺母的理论质量/kg25.3056.86109.07135.33188.56270.66350.64462.75603.64a尽可能不采用括号内的规格。垫圈A尺寸垫圈A4。图4垫圈A表5垫圈A尺寸 为毫米规格（螺纹大径）121620222427303336d1min131721232528313437max13.4317.4321.5223.5225.5228.5231.6234.6237.62d2min23.731.438.440.445.450.154.158.164.1max253340424752566066d3min15.2319.2324.3226.3228.3232.8435.8439.8442.84max16.0320.0325.1227.1229.1233.6436.6440.6443.64h公称3.04.04.05.05.05.05.05.06.0min2.53.53.54.54.54.54.54.55.5max3.84.84.85.85.85.85.85.86.8qmin1111.51.51.51.51.52max1.51.51.5222222.5ro公称22.52.5333333每1000个钢垫圈的理论质量/kg(后续修改）7.4218.0226.1934.3144.8453.2260.5967.2299.44B尺寸垫圈B5。图5垫圈B表6垫圈B寸 单毫米规格（螺纹大径）121620222427303336d1min131721232528313437max13.4317.4321.5223.5225.5228.5231.6234.6237.62d2min23.731.438.440.445.450.154.158.164.1max253340424752566066h公称3.04.04.05.05.05.05.05.06.0min2.53.53.54.54.54.54.54.55.5max3.84.84.85.85.85.85.85.86.8qmin1111.51.51.51.51.52max1.51.51.5222222.5每1000个钢垫圈的理论质量/kg(后续修改）8.2319.4328.0937.1947.7957.4865.0373.12106.14技术要求材料735VBA。表7螺栓、螺母、垫圈的性能等级和材料类别性能等级材料标准编号适用规格螺栓10.9S20MnTiBGB/T3077M12~M24ML20MnTiBGB/T647835VB—M27~M3642CrMoGB/T3077ML40CrMoGB/T64788.8S45、35GB/T699M12~M2020MnTiB、40CrGB/T3077M12~M24ML20MnTiBGB/T647835CrMoGB/T3077M27~M3635VB—42CrMoGB/T3077ML40CrMoGB/T6478螺母10H45、35ML35、ML45GB/T699GB/T6478M12~M368H垫圈35HRC～45HRC45、35GB/T699M12~M36表8螺栓、螺母、垫圈的使用配合类别螺栓螺母垫圈性能等级10.9S10H35HRC～45HRC8.8S8H35HRC～45HRC机械性能螺栓试件机械性能拉伸试验和冲击试验的结果应符合表9的规定。表9试件机械性能性能等级抗拉强度Rm/MPa规定塑性延伸率为0.2%时的应力Rp0.2/MPa断后伸长率(标距为直径的5倍）A/%断面收缩率Z/%吸收能量（-20℃）KVa/J210.9S1040~1190≥940≥10≥48≥278.8S830~1030≥660≥12≥52≥27a适用于d≥16mm。实物机械性能10表10螺纹规格dM12M16M20（M22）M24（M27）M30（M33）M36公称应力截面积As,nom/mm284.3157245303353459561694817性能等级10.9S拉力荷载a/N87700~100000163000~187000255000~292000315000~361000367000~420000477000~546000583000~668000722000～826000850000～9720008.8S70000~86800130000~162000203000~252000251000~312000293000~364000381000~473000466000~578000576000～715000678000～842000a拉力载荷根据As,nom计算得出，100000N以内圆整到上一个100N，100000N以上圆整到上一个1000N。当螺栓l/d≤31011表11性能等级维氏硬度洛氏硬度minmaxminmax10.9S312HV30358HV3033HRC38HRC8.8S249HV30296HV3024HRC31HRC脱碳层、增碳层脱碳层、增碳层的要求应符合GB/T3098.1的相关规定。螺母保证载荷螺母的保证载荷应符合表12的规定。表12螺纹规格DM12M16M20（M22）M24（M27）M30（M33）M36性能等级10H保证载荷a/N877001630002550003150003670004770005830007220008500008H70000130000203000251000293000381000466000576000678000a保证载荷根据As,nom计算得出，100000N以内圆整到上一个100N，100000N以上圆整到上一个1000N。硬度螺母的硬度应符合表13的规定。表13性能等级维氏硬度洛氏硬度minmaxminmax10H226HV30304HV3020HRC32HRC8H206HV30289HV3095HRB30HRC垫圈垫圈的硬度应为329HV30~436HV30（35HRC~45HRC）。高强度大六角头螺栓连接副应按保证扭矩系数供货，同批螺栓连接副的扭矩系数平均值K为0.110~0.150，变异系数小于等于0.07716螺栓、螺母的螺纹GB/T196GB/T197GB/T197的。MRR𝑅𝑎max12.5。螺栓的螺纹末端螺栓的螺纹末端应符合5.1和GB/T2的规定。表面缺陷GB/T5779.1GB/T5779.2螺栓、螺母和垫圈的其他尺寸及形位公差应符合GB/T3103.1和GB/T3103.3有关C级产品的规定。表面处理螺栓、螺母和垫圈均应进行保证螺栓连接副扭矩系数和防锈的表面处理。表面处理工艺由制造者选择。试验方法螺栓拉伸和冲击试验一般要求拉伸和冲击试件应由经尺寸等检验合格的螺栓或热处理后的螺栓坯料上制取；当尺寸无法满足取样要求时，可在经同一热处理工艺处理的随炉同根试棒上制取。拉伸试验按GB/T228.1的规定制成拉伸试件，加工试件时其直径减小量不应超过取样材料直径的25%（约为截面积的44%），并以此确定试件直径，标距取直径的5倍。试验方法应符合GB/T228.1的规定。冲击试验GB/T2292mmV-20℃GB/T229楔负载试验10°（至少6扣1d（见图6），然后进行拉力试验。10°楔垫的型式、尺寸及硬度应符合GB/T3098.16芯部硬度试验GB/T230.1或GB/T4340.1脱碳、增碳试验脱碳、增碳试验应符合GB/T3098.1的规定。螺母保证载荷试验D0GB/T527731215（1/2图7螺母保证载荷试验6g硬度试验3GB/T230.1或GB/T4340.1的（HV30）垫圈4GB/T230.1GB/T4340.1（HV30）（1）式中：Ki——扭矩系数的单个值；

𝐾𝑖

=𝑇Fd

（1）T——施拧扭矩（峰值），单位为牛米（N•m）；F——螺栓预拉力（峰值），单位为千牛（kN）；d——螺栓的螺纹公称直径，单位为毫米（mm）。扭矩系数平均值按式（2）计算：式中：

nnKiKn

·················································（2）K——扭矩系数的平均值；n——扭矩系数试验结果数量；扭矩系数标准偏差按式（3）计算：n（KK)2in（KK)2ii1 (n1)式中：——标准偏差；变异系数按式（4）计算：式中：Vk——变异系数。

VKKK

·······················································（4）T2%JJG707-20142级。F2%F14表14螺预力 位为千牛螺栓螺纹规格M12M16M20（M22）M24（M27）M30（M33）M36性能等级10.9SFmax63116179221263336410520612min571041611992373043704705548.8Smax5395147174206268326416485min47851331581862422943764391组装螺栓连接副，垫圈B52（20±2）℃检验规则100mm15100mm203000885.3规定。Ac=0。n=3，合格判定数Ac=0。GB/T90.16标记螺栓标记螺栓标记方法依据GB/T1237中的规定。1d=M20l=100