SURFACE ROUGHNESS PARAMETER AND SLIP COEFFICIENT OF FRICTION TYPE OF HIGH STRENGTH BOLTED CONNECTIONS

Abstract

 A slip coefficient controlling the slip resistance of friction type of high strength bolted connections is considered to depend on the surf ace roughness of a friction surface of st eel plate. A lot of studies have been done about relationship between th e slip coefficient and surface roug hness so far. However, in those studies, various testing conditions and surface roughness parameter were used. In this study, in order to clarify appropriate parameter for arranging the influe nce of surface roughness on slip resistance, the tensile tests and surface roughness measurements on fric tion type of high strength bolted connections with various surface roughnesses are performed.