Analysis of Long-Term Effects in Concrete Columns Prestressed with FRP Tendons

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.

Language

  • English

Media Info

  • Media Type: CD-ROM
  • Features: Figures; References;
  • Pagination: pp 21-36
  • Monograph Title: Case Histories and Use of FRP for Prestressing Applications

Subject/Index Terms

Filing Info

  • Accession Number: 01053875
  • Record Type: Publication
  • ISBN: 9780870312434
  • Report/Paper Numbers: SP-245-2
  • Files: TRIS
  • Created Date: Jul 11 2007 4:21PM