Abstract

As a consequence of past bridge failures and the aging of existing infrastructure, the FHWA has identified new criteria within a recently released memo to classify fracture critical bridges using the concept of system redundancy. Ciorba has investigated 20 bridges in Illinois with fracture critical members (FCMs). This presentation details the analysis criteria required by the FHWA memo, the various categories of FCMs in the 20 bridges, our finite element analysis, and ultimately our results.

Session Number

79

Session Title

Declassifying Fracture Critical members Using System Redundancy

Track Title

Bridges

Location

St. Thomas Newman Hall

Date of Version

March 2017

Start Date

3-8-2017 10:30 AM

End Date

3-8-2017 11:20 AM

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Mar 8th, 10:30 AM Mar 8th, 11:20 AM

Declassifying Fracture Critical Members Using System Redundancy

St. Thomas Newman Hall

As a consequence of past bridge failures and the aging of existing infrastructure, the FHWA has identified new criteria within a recently released memo to classify fracture critical bridges using the concept of system redundancy. Ciorba has investigated 20 bridges in Illinois with fracture critical members (FCMs). This presentation details the analysis criteria required by the FHWA memo, the various categories of FCMs in the 20 bridges, our finite element analysis, and ultimately our results.