Building engineering knowledge: high strength bolts for steel structure connection set

Anti-slip coefficient is one of main design parameters of high strength bolted connections, directly affect the capacity of members, so components of friction surface processed by the factory, is still handled by the site are anti-slip coefficient test minimum slip resistance coefficient measured value shall meet the design requirements are mandatory provisions of this section.

At the installation site by wheel grinding friction surface, grinding is not less than 4 times times the bolt diameter, polished direction and the component perpendicular to the stress direction.

Design on the use of coefficient of friction of 0.3 or less, and articulated the anti slip coefficient test, however, remaining in production in order to determine the friction surface treatment method, must be in the required quantities and by 3 sets of the same material, methods of dealing with specimens and reinspect. And with 3 sets of the same material, methods of dealing with specimens for reinspection before installation.