Case-specific parametric analysis as research-directing tool for analysis and design of GFRP-RC structures

Marco Rossini, Eleonora Bruschi, Fabio Matta, Carlo Poggi, Antonio Nanni

Research output: Contribution to journalConference article

3 Scopus citations


This paper presents a parametric analysis of the ACI440 (2015) and AASHTO (2009) algorithms governing the flexural design of a one-way concrete member internally reinforced with glass fiber-reinforced polymer (GFRP) bars. The influence of specific design parameters on the required amount of reinforcement is investigated. The aim is to identify variables and requirements governing the design of a large-section GFRP reinforced concrete (RC) member. The member considered for this case-specific analysis is the reinforced concrete pile cap of the Halls River Bridge (Homosassa, FL), which is deemed representative of large-section GFRP-RC members operating as bent caps in short-span bridges. The influence of four critical parameters on the required amount of reinforcement is assessed. Salient analysis and design implications are discussed with respect to creep and fatigue rupture stress limits, minimum amount of flexural reinforcement, and applicable strength reduction factors. The outcomes of the parametric analysis highlight an untapped potential to reduce the required amount of reinforcement, and prioritize research areas to advance the development of rational design algorithms. Cyclic fatigue and creep rupture are identified as governing mechanisms.

Original languageEnglish (US)
Pages (from-to)547-558
Number of pages12
JournalAmerican Concrete Institute, ACI Special Publication
Issue numberSP 327
StatePublished - Jan 1 2017
Externally publishedYes
Event13th International Symposium on Fiber-Reinforced Polymer Reinforcement for Concrete Structures 2017, FRPRCS 2017 - Anaheim, United States
Duration: Oct 15 2017Oct 19 2017



  • Concrete
  • Design
  • Flexure
  • GFRP bars
  • Parametric analysis
  • Safety factors
  • Standards

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)

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