疲労(3)

[I-73] Simplified analysis method of the drilled hole at the crack tip repaired by splice plate with high-strength bolt

〇Shogo Kiyokawa¹, Takeshi Hanji², Ryojiro Kato¹ (1.Yokogawa Bridge Holdings Corp., 2.Nagoya University)

Keywords:Fatigue crack, Splice plate repair, drilled hole at crack tip, FE analysis

A typical repair method for fatigue cracks in steel bridge members is the splice plate method. The crack tip is drilled out, and splice plates are added over the crack. For this method, it is important that stress concentrations at drilled hole are sufficiently mitigated to prevent crack propagation again. The performance of the repair method like this often verified by FE analysis, however, there is no standardized analysis method. The purpose of this study is to provide and verify the simplified analysis method for drilled holes with splice.