ABSTRACT

This paper presents an experimental study on the load-bearing behavior of high-strength bolts of the property class 10.9 under combined tension and shear. Earlier experimental studies of highstrength bolts in fire which assessed the load-bearing behavior under tension and shear showed deviating strength reduction with reference to the temperature. The investigation presented here focusses on the combination of both loads. Tests were done both under fire conditions and at ambient temperature on bolts heated to specified temperatures and then slowly cooled to ambient temperature.