Lloyd, J. B., Bonachera Martín, F. J., Korkmaz, C., & Connor, R. J. (2018). Member-level redundancy of built-up steel axially loaded members. West Lafayette, IN: Purdue University. https://doi.org/10.5703/1288284316997
Full-scale fracture tests were completed determining that mechanically-fastened steel built-up axially-loaded tension members are resistant to running fracture when a single component suddenly fractures. This characteristic of built-up member is referred to as Cross-Boundary Fracture Resistance (CBFR). A comprehensive finite element model-based parametric study was also performed investigating the post-fracture load redistribution behavior of multi-component built-up members. Simplified closed-form solutions were developed for engineering analysis of built-up members to evaluate for internal member redundancy and estimate safe inspection intervals that are based on the fatigue life of the member in the assumed faulted condition.
steel bridge, built-up member, internal redundancy, member-level redundancy, fatigue, fracture, IRM
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