2022 Volume 78 Issue 1 Pages 169-179
Application of different contact faces in one bolted joints might allow labor-saving and accelerated works in some cases such as protection works of existing bridges and fabrication of box girders made of weathering steel without coating.
In present study, bolted joints including different contact faces were targeted as a hybrid faying surfaces joint in which contact surface treatment for the base plates is different from corresponding that for splice plates (inorganic zinc-rich coatings), and 21 bolted joint specimens were used in bolt pretension test and slip test. This paper reports these results and compares degree of pretension loss and slip resistance in the hybrid faying surface joints with homogeneous (i.e. normal) joints. Finally, also based on previous research, the applicability and slip coefficient for designing of the hybrid faying surfaces joints are discussed.