钢结构抗拉高强度螺栓设计方法比较分析

Comparative analysis on design methods of high strength bolts in tensile connections in steel

抗拉高强度螺栓具有强度高,施工便捷,且避免现场焊缝带来的不利影响等优点,在钢结构连接节点中广泛采用.目前我国现行《钢结构设计规范》(GB 50017—2003)、《钢结构高强度螺栓连接技术规程》(JGJ82—2011)关于抗拉高强度螺栓拉力计算模型及撬力计算的设计方法略有差异,一些文献对以上两规范的抗拉高强度螺栓拉力及撬力计算方法进行了研究分析.针对以上抗拉高强度螺栓设计方法的特点及异同进行了比较分析,并通过有限元、试验、算例结果进行比较验证.研究结果可给工程设计人员提供直观的参考.

High strength bolts in tensile connections have advantages of high strength,convenient construction,as avoid the negative influence of field welds,which are used wildly in steel connections.At present,the design methods of bolt tension force and prying force of high strength bolts in tensile connections have a little difference in ＂Design Code for Steel Structures＂（GB 50017-2003）and＂Technical Specification for High-strength Bolts Connection of Steel Structure＂（JGJ 82-2011）.Some papers studied the design methods in those two current codes.The design methods of high strength bolts in tensile connections are compared and the same and the difference between the two codes are summed up in this paper.The results are validated by the FEA results,test results,and example results,and provide engineering designers with direct reference.