Safety-shaped concrete bridge railings and traffic barriers using GFRP reinforcement

Valentino Rinaldi, Marco Savoia, Antonio Nanni

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

Abstract

The demand for the development of a more efficient and durable transportation infrastructure is among the top priorities of highway authorities worldwide. In the United States, the economic impact of steel corrosion for concrete highway bridges is estimated to exceed 15 percent of total annual costs. Degradation affecting steel reinforced concrete (RC) bridge superstructures exposed to harsh environmental conditions is not limited to decks, but includes railings and barriers and can significantly compromise their crashworthiness. Glass fiber reinforced polymer (GFRP) is highly suitable for reinforcing concrete structures subjected to corrosive environments and a number of projects have demonstrated its viability as an alternative reinforcement for bridge decks. Until recently, most traffic barriers using GFRP bars were vertical-faced systems. However, the impact time duration of vertical-faced barriers is shorter causing higher peak forces to be transferred to vehicle occupants. Nowadays, GFRP manufacturers can produce standard bar bends which can be used for the reinforcement of safety-shaped concrete railings and barriers. The implementation of GFRP bar bends requires some changes in the current design philosophy for railings and barriers. Whereas the overall goal of the research program is to make the technology of concrete bridge reinforcement with composites available to bridge owners and professionals, this paper provides the principles for the design of safety-shaped GFRP-reinforced concrete railings/barriers.

Original languageEnglish (US)
Title of host publicationAmerican Concrete Institute, ACI Special Publication
EditorsClaudio Mazzotti, Mario Alberto Chiorino, Luigi Coppola, Paolo Riva, Roberto Realfonzo
PublisherAmerican Concrete Institute
Pages21.1-21.10
EditionSP 305
ISBN (Electronic)9781510807754, 9781510807761, 9781510807778, 9781510819788, 9781510819795, 9781510819801, 9781510819818
StatePublished - Jan 1 2015
Event1st International Workshop on Durability and Sustainability of Concrete Structures, DSCS 2015 - Bologna, Italy
Duration: Oct 1 2015Oct 3 2015

Publication series

NameAmerican Concrete Institute, ACI Special Publication
NumberSP 305
Volume2015-January
ISSN (Print)0193-2527

Other

Other1st International Workshop on Durability and Sustainability of Concrete Structures, DSCS 2015
CountryItaly
CityBologna
Period10/1/1510/3/15

Keywords

  • Bridge
  • Design
  • GFRP
  • Infrastructure
  • RC
  • Railing
  • Traffic barrier

ASJC Scopus subject areas

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

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  • Cite this

    Rinaldi, V., Savoia, M., & Nanni, A. (2015). Safety-shaped concrete bridge railings and traffic barriers using GFRP reinforcement. In C. Mazzotti, M. A. Chiorino, L. Coppola, P. Riva, & R. Realfonzo (Eds.), American Concrete Institute, ACI Special Publication (SP 305 ed., pp. 21.1-21.10). (American Concrete Institute, ACI Special Publication; Vol. 2015-January, No. SP 305). American Concrete Institute.