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Inspection and Management of Bridges with Fracture-Critical Details (2005) / Chapter Skim
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Chapter Five - Conclusions
Pages 35-36

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From page 35...
... Redundancy has a significant impact on the risk of collapse, and this impact is accounted for appropriately for all types of structures in both the AASHTO LRFD Bridge Design Specifications and the Manual for Condition and Load and Resistance Factor Rating (LRFR) of Highway Bridges.
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From page 36...
... Owners identified the following as the most important areas for future research as related to FCBs: • Develop load models, criteria for the extent of damage, and guidelines related to advanced structural analysis procedures to better predict service load behavior in FCM bridges and the behavior after fracture of an FCM, including dynamic effects from the shock of the fracture and, if necessary, large deformations. • Develop advanced fatigue-life calculation procedures, taking into account a lack of visible cracks for fracturecritical bridges.
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Key Terms

  • notch toughness
  • lrfd bridge
  • bridge design
  • classifying bridges
  • fcm bridges

  • control plan
  • fracture control
  • reference manual
  • truck traffic
  • considered fcms

  • design specifications
  • highway bridge
  • investigate field
  • toughness level
  • additional initial

  • inspection interval
  • reported finding
  • innovative retrofits
  • nchrp report
  • vatively designed

  • escaped notice
  • load models
  • dimensional analysis
  • highway bridges
  • added inspection

  • factor rating
  • averting collapses
  • toughness requirements
  • dynamic effects
  • associated waiver


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