To investigate the fatigue performance of stress concentrated joints in a steel box-tied arch bridge under high-speed railway load,this study employed a simplified full-bridge model created using the finite element software ANSYS,based on a specific high-speed railway steel box-tied arch bridge project.Further,detailed local models were established at two locations with maximum stress values for thorough analysis.Both code-based evaluation and theoretical fatigue assessments were conducted on the stress concentrated joints within the refined local models.The results demonstrate that all stressed joints in the bridge meet the required fatigue criteria,with the assessment outcomes significantly exceeding the limiting values.
high-speed railwayjoint fatigue analysisfinite element simulation