2017 Volume 24 Issue 96 Pages 96_81-96_90
For developing high-strength bolted friction joints with much higher friction coefficients than conventional ones, slip tests and relaxation tests of bolted friction joints with aluminum-sprayed splice plates are conducted by changing surface treatment of main plates. The results show that (1)slip coefficients are high in the case that main plates are blasted, (2)slip coefficients in the case that main plates are coated with inorganic zinc-rich paints or roughened by the disc sander drop slightly about 10～20% compared to the blasted one, (3)the coating thickness of inorganic zinc-rich paints has little effect on slip resistance, (4)the treatment of aluminum spraying has little influence on relaxation characteristics.
