Analysis of long-term effects in concrete columns prestressed with FRP tendons

C. C. Choo, I. E. Harik, H. Gesund

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

An analytical investigation was conducted to study the long term effects in the strength interaction (Pn-Mn) behavior of non-slender concrete columns prestressed with fiber reinforced polymer (FRP) tendons. Two long term concrete stress-strain behaviors were used and compared to the instantaneous or short term load. The expressions for the strength interaction of FRP prestressed concrete columns are derived from the strain compatibility and equilibrium conditions and are presented herein. Based on this preliminary investigation, it was concluded that the long term loadings and the tensile creep rupture of FRP tendons considerably influence the column strength. The results of the column cross sections considered herein show that disregarding long term effects may be conservative provided that rupture of FRP tendons does not occur in the columns.

Original languageEnglish
Title of host publicationCase Histories and Use of FRP for Prestressing Applications
PublisherAmerican Concrete Institute
Pages21-36
Number of pages16
ISBN (Electronic)9780870312434
StatePublished - Apr 1 2007
Event2006 Symposium on Case Histories and Use of FRP for Prestressing Applications - Denver, United States
Duration: Nov 8 2006 → …

Publication series

NameAmerican Concrete Institute, ACI Special Publication
VolumeSP-245
ISSN (Print)0193-2527

Conference

Conference2006 Symposium on Case Histories and Use of FRP for Prestressing Applications
Country/TerritoryUnited States
CityDenver
Period11/8/06 → …

Bibliographical note

Publisher Copyright:
© 2007 American Concrete Institute. All rights reserved.

Keywords

  • Concrete columns
  • FRP tendons
  • Long term loads
  • Non-slender
  • Prestressing
  • Tensile rupture
  • Ultimate load

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • General Materials Science

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