Abstract
Stresses around welded joints between deck plate and trough rib of orthotropic steel decks are known to be affected largely by stiffness of pavement. In order to clarify this, stress measurements were carried out for orthotropic steel decks with conventional asphalt pavement and with steel fiber reinforced concrete (SFRC) pavement. To clarify also temperature effect, the tests were carried out twice during summer and winter. Parametric stress analysis using finite element method was also carried out considering stiffness change due to temperature in asphalt pavement and SFRC pavement. Large reduction in stresses was observed with SFRC pavement regardless of the temperature. Then, fatigue durability was evaluated using two wheel load distributions representing heavily loaded highway and less truck traffics.
