抄録
Although fatigue assessment was required for highway bridge design since 2002, expansion joints and sign structures were so far not designed for fatigue. One reason was that the fatigue design loads were not well defined. Since quite a few fatigue failures occurred in such structures, fatigue durability assessment seemed essential. In this paper, simple fatigue design loads and their number of cycles are defined for durability evaluation for expansion joints and sign structures. Stress ranges needed for fatigue durability evaluation can be obtained from static design chart, since the fatigue design loads are somehow related to static design loads. Examples of fatigue durability evaluation are described in this paper.
