Redundancy is “the quality of a bridge that enables it to perform its design function in a damaged state” and it is considered a desired characteristic of good design. The consideration of redundancy affects the design, fabrication and in-service inspection of steel bridge members especially when they are classified as fracture critical member (a steel tension member whose failure would probably cause collapse). This module provides engineers with an explanation of redundancy and how it affects the design, fabrication, inspection, and management of steel girder bridges.
Content Notes:
The previous version of this Handbook was published as FHWA-IF-12-052 and was developed to be current with the AASHTO LRFD Bridge Design Specifications, 5th Edition with the 2010 Interims. FHWA-HIF-16-002 was updated in 2015 by HDR, Inc., to be current with the AASHTO LRFD Bridge Design Specifications, 7th Edition.
This report proposes a redundancy factor to provide improved bridge system reliability using conventional component-based limit-state design. The redu...
In the context of steel bridge members, nonredundancy or fracture criticality relates to resistance of the entire bridge superstructure to brittle fra...
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