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Abstract
Recent studies highlighted the importance of an accurate assessment of the remaining life of historical steel riveted bridges to plan and design their maintenance. Such structures are usually prone to fatigue damage due to the high number of cumulated cyclic stresses over their service life. Currently, limited guidelines are available for evaluating the fatigue strength of riveted connections. According to the JRC-ECCS document Assessment of Existing Steel Structures: Recommendations for Estimation of Remaining Fatigue Life, the fatigue capacity of riveted connections should be evaluated through the fatigue class 71, whose prediction may be excessively conservative. Therefore, this paper summarizes the results of a theoretical study and an experimental campaign aimed at characterizing the high-cycle fatigue of riveted shear splices. Experimental fatigue results have been collected from the literature, and a database has been built, including material property, loading condition, riveting process, and geometry information. The collected data and those obtained from the performed tests have been statistically elaborated to investigate the influence of such parameters on their fatigue strength. Finally, comparisons with the recommended fatigue classes are provided to discuss their suitability in predicting the fatigue strength of the investigated riveted connections.
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