Abstract:The deck thickness parameter is one of the important design parameters affecting the fatigue performance of the orthotropic steel bridge deck-rib joint. Taking the steel deck of a cable-stayed bridge as the research background, the ANSYS finite element software is used to determine the simplified segment model size through deformation characteristics. And based on this, the influence of the deck thickness parameters on the fatigue stress of the steel bridge deck-rib joint is analyzed. The analysis results can provide reference for related research.