母板の腐食性状が高力ボルト摩擦接合のすべり係数に与える影響

抄録

This study investigated the impact of rough corrosion irregularities on the slip coefficient in high-strength bolted frictional joints of corroded railway bridges. Slip tests were conducted using test specimens joined by connecting plates coated with corrosion steel materials and inorganic zinc-rich paint. Some test specimens were re-exposed to assess the corrosion condition of the joint surface and changes in the slip coefficient. The slip coefficient using corrosion steel materials was below 0.40, and after approximately three years of re -exposure, there was a 20% increase in the slip coefficient compared to before exposure.