The purpose of this study is to investigate the out-of-plane deformation of splice plates in the high strength bolted friction joint under compression load. Compression tests of high strength bolted joint with double frictional surface were carried out. From the test results, two types of deformation mode appeared, one is the lower fixed end of specimen moves horizontally, and the other is the lower fixed end does not move. Maximum compressive strength of the former mode whose generalized slenderness ratio is less than 1 is well predicted by the bending buckling equations of the past.
