Stress and Deformation Behavior of Friction Type High Strength Bolted Joints During Cooling Phase in Fire

Abstract

To investigate stress and deformation behavior of steel structure in fire, it is important to consider behavior of friction type high strength bolted joints during not only heating phase but also cooling phase. The purpose of the present paper is to consider stress and deformation behavior of the joints under cooling phase. This paper reports on results of the tensile test after fire, displacement restraint test under cooling phase and numerical study of the restraint test. As a result, in case of the joint which designed to investigate the behavior of tear-out failure, the sufficient deformation capacity was confirmed because of the ductility of the plates with a bolt hole.