Flexural RC members strengthened with mechanically fastened FRP laminates: Test results and numerical modeling

A. Napoli, F. Matta, E. Martinelli, A. Nanni, R. Realfonzo

Research output: Contribution to conferencePaperpeer-review

1 Scopus citations

Abstract

This paper presents an experimental and numerical investigation aimed at advancing the knowledge of the behavior of reinforced concrete (RC) members strengthened in flexure with Mechanically Fastened (MF) Fiber Reinforced Polymer (FRP) laminates. The test matrix included four MF-FRP strengthened specimens with different combinations of laminate lengths and fastener layouts, a counterpart strengthened with externally bonded (EB) FRP laminate, and a control (unstrengthened) specimen. Test results presented herein emphasize the influence of the partial interaction between RC slabs and MF-FRP laminates on the flexural response arising predominantly from bearing of the fasteners onto the FRP laminate. A finite element procedure was developed to carry out the numerical study, which incorporates nonlinear constitutive models for materials and concrete-FRP interface. For the latter, an accurate and a simplified, conservative bilinear stress-slip model are successfully implemented and verified to evaluate applicability for analysis and design purposes, respectively.

Original languageEnglish (US)
Pages551-556
Number of pages6
StatePublished - Jan 1 2009
Externally publishedYes
Event2nd Asia-Pacific Conference on FRP in Structures, APFIS 2009 - Seoul, Korea, Republic of
Duration: Dec 9 2009Dec 11 2009

Conference

Conference2nd Asia-Pacific Conference on FRP in Structures, APFIS 2009
CountryKorea, Republic of
CitySeoul
Period12/9/0912/11/09

Keywords

  • Bearing slip
  • Experimental tests
  • FRP
  • Fasteners
  • Flexural strengthening
  • Numerical modeling
  • RC slabs

ASJC Scopus subject areas

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

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