Reinforcement Method for Inhibiting Fatigue Cracks on Rivet Girder Supports

摘要

Fatigue cracks initiate in the lower flange of rivet girder supports because of the stress caused by bridge member deterioration. There are cases where fatigue cracks cannot be immediately repaired because the procedure would be time consuming and costly. Tms research identifies some of the causes of the stress in the lower flange of rivet girder supports, having conducted loading tests on a rivet girder, and FEM analyses. On the basis these results, we began developing reinforcement methods for inhibiting fatigue crack growth in the lower flanges of rivet girder supports. Moreover, we are verifying the effect of these reinforcement methods through loading tests.