Abstract
In face of applying the limit state design method for bearing resistance to high strength frictional bolted joint, concrete definition of bearing resistance state and a rational evaluation method for bearing resistance corresponding to the definition are required. But, there is no provision of deformation property such as hole deformation in Eurocode already using the limit state design method, and the bearing limit state is not prescribed in Japan. In the past, we revealed bearing resistance based on hole deformation by tensile tests for frictional bolted joint with one bolt. In according with the test results, we carried out the same tests with a few bolts, then demonstrate relationship the bearing resistance of the overall joint and each hole deformation. Therefore, when the ratio of bolt pitch of bolt diameter p/d is more than or equal to 4.5, the bearing resistance of the over all joint is taken as the number of bolts multiplied by that resistance with one bolt.
