Abstract
Resent years, from the viewpoint of rational structural members of steel bridges, the high strength bolted friction type joints tend to be large. Since the slip behavior of high strength multi bolted friction type joints with thick plates is not clear, the slip strength tests for such joints had been carried out. And from the experimental results, it can be found that slip coefficient varies depending on the number of rows of bolts in a line. In this study, in order to clarify the slip behavior of such joints, FE analysis has been conducted with various structural dimensions, such as slip/yielding strength ratio, section shape of the connected plate etc. As a result, the slip coefficient of the joint with many bolts in a line becomes low because each frictional force per one bolt is unequal, and the plate width effects on the slip strength more significantly than other structural dimensions.
