What are the main inspection items of high-strength bolt inspection?

（1）主要检验项目

(1) Main inspection items

包括：螺栓实物zui小荷载检验；扭剪型高强度螺栓连接副预拉力复验；高强度螺栓连接副扭矩检验；高强度大六角头螺栓连接副扭矩系数复验；高强度螺栓连接摩擦面的抗滑系数检验。

Including: zui small load inspection of bolts; Retest the pre tension of the connection pair of the torsional shear type high-strength bolt; Torque inspection for connecting pairs of high-strength bolts; Re inspection of torque coefficient of high-strength large hexagon bolt connection pair; Inspection of anti sliding coefficient of friction surface of high-strength bolt connection.

（2）主控项目

(2) Dominant items

①钢结构制作和安装应按GB50205—2001附B的有关规定分别进行高强度螺栓连接摩擦面的抗滑系数试验和复验，现场处理的构件摩擦面应单独进行摩擦面的抗滑系数试验，其结果应符合设计要求。

① The steel structure fabrication and installation shall be subject to the anti slip coefficient test and re inspection of the friction surface of high-strength bolt connection according to the relevant provisions of GB50205-2001 Appendix B. The friction surface of the component treated on site shall be subject to the anti slip coefficient test of the friction surface separately, and the results shall meet the design requirements.

②高强度大六角头螺栓连接副终拧完成1h后、48h内应进行终拧扭矩检查，检查结果应符合规范规定。检查数量：按节点数抽查10%，且不应少于10个节点；每个被抽查节点按螺 栓数抽查10%，且不应少于2个。

② The final tightening torque inspection shall be carried out within 1h and 48h after the final tightening of high-strength large hexagon bolt connecting pairs, and the inspection results shall conform to the specifications. Inspection quantity: spot check 10% of nodes, and no less than 10 nodes; Each node to be spot checked shall be 10% of the number of bolts, and shall not be less than 2.

③扭剪型高强度螺栓连接副终拧后，除因构造原因无法使用扳手拧掉梅花头者外，未在终拧中拧掉梅花头的螺栓数不应大于该节点螺栓数5%。对所有梅花头未拧掉的扭剪型高强度螺栓连接副应采用扭矩法或转角法进行终拧并作标记，且按上述②条中的规定进行终拧扭矩检查。

③ After the final tightening of the connecting pair of the torsional shear type high-strength bolt, the number of bolts that do not have the torx head unscrewed in the final tightening shall not be greater than 5% of the number of bolts at the node, except for those that cannot be unscrewed with a wrench due to structural reasons. The torque method or angle method shall be used for final tightening and marking of the connection pairs of all torshear type high-strength bolts whose torx heads are not unscrewed, and the final tightening torque shall be checked according to the provisions in ② above.

检查数量：按节点数抽查10%，但不应少于10个节点，被抽查点中梅花头未拧掉的扭剪型高强度螺栓连接副全数进行终拧扭矩检查。

Inspection quantity: spot check 10% of the nodes, but not less than 10 nodes. Final tightening torque inspection shall be carried out for all the connecting pairs of torsional shear high-strength bolts whose plum heads are not unscrewed in the spot check points.