On the history and reliability of the flexural strength of frp reinforced concrete members in ACI 440.1R

Carol K Shield, Theodore V. Galambos, Peter Gulbrandsen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

14 Scopus citations

Abstract

The structural reliability of concrete flexural members reinforced with fiber reinforced polymer (FRP) reinforcement is investigated. Reliability indices based on the equations for flexure in ACI 440.1R-03, which uses the load factors from ACI 318-99 are presented. Choice of a resistance factor for flexure for ACI 440.1R-06, which uses the load factors from ACI 318-02 is also presented. Flexural designs using either ACI 440.1R-03 or ACI 440.1R-06 provide sufficient reliability, with reliability indices between 3.5 and 4.8, with the older versions of ACI 440.1R yielding higher reliability. An analysis of curvature of the beams at failure showed that flexural members that fail by FRP reinforcement rupture have ductilities similar to those that fail by concrete crushing, indicating that FRP reinforcement fracture is not necessarily a more brittle failure mode than concrete crushing.

Original languageEnglish (US)
Title of host publication10th International Symposium on Fiber-Reinforced Polymer Reinforcement for Concrete Structures 2011, FRPRCS-10
Pages1-18
Number of pages18
Volume1
Edition275 SP
StatePublished - Dec 1 2011
Event10th International Symposium on Fiber-Reinforced Polymer Reinforcement for Concrete Structures 2011, FRPRCS-10, in conjunction with the ACI Spring 2011 Convention - Tampa, FL, United States
Duration: Apr 2 2011Apr 4 2011

Other

Other10th International Symposium on Fiber-Reinforced Polymer Reinforcement for Concrete Structures 2011, FRPRCS-10, in conjunction with the ACI Spring 2011 Convention
Country/TerritoryUnited States
CityTampa, FL
Period4/2/114/4/11

Keywords

  • Ductility
  • Flexure
  • FRP
  • Reliability

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