In the construction of steel structure bolts, the accuracy requirements of connecting parts are relatively strict. Gas cutting and forced driving are not allowed in the actual construction. The diameter of bolt hole of steel structure bolt connecting parts should meet the design requirements, and it is irregular and not square. What's more, for steel structure bolts, which are powerful parts, the diameter of bolt hole should meet the design requirements, Steel structure bolt connection structure is in accordance with strict requirements to operate
1. The number of permanent steel structure bolts for each member on the joint and one end of splicing joint should not be less than two;
2. Double nuts or other effective methods to prevent nuts from loosening should be used in the tension connection of ordinary bolts directly bearing dynamic load;
3. Because there is a large gap between the C-grade bolt and the hole wall, it is only suitable for the connection under tension along the rod axis. Grade C bolts can also be used to bear shear force in secondary connection of static load bearing structure, connection of removable structure and installation connection of temporary fixed members.
4. When steel structure bolts are used for connection, section steel can not be used for splicing, only steel plate can be used（ The bending rigidity of section steel is large, which can't guarantee the tight combination of friction surface).
５。 In order to reduce the adverse effect of prying force on the tensile capacity of steel structure bolts, the stiffness of the end plate in the bolt connection under tension along the rod axis should be appropriately enhanced.
