2021 Volume 28 Issue 110 Pages 110_83-110_96
AASHTO shows the slip coefficient of the slotted holes is reduced by 40% from that of the normal holes, while the slip tests that conducted in Japan have shown the slip coefficient of the slotted holes is reduced by 10%. The cause of this difference in the slip coefficient reduction rate has not been clarified. In this study, we conducted the slip test of the high strength bolted frictional joints with slotted holes, focusing on the effect of the slipyield resistance ratio and tightening method of the bolts to verify the past test results. As a result, the slip coefficients of slotted holes were reduced by up to 9%, which were similar to the past results obtained in Japan.
