Abstract
In this study, fatigue strength of welded joints using a newly developed steel called Steels for Bridge High Performance Structures (SBHS) was investigated. Fatigue crack propagation tests with compact tension specimens were performed to clarify fatigue crack growth characteristic of materials. Then, fatigue strengths of welded joints using SBHS were investigated. These test results revealed that the fatigue performances of welded joints using SBHS are almost the same as those of conventional structural steels.
