Design charts for circular reinforced concrete columns have been developed on the basis of this design method to enable the required thickness of "longitudinal" or axial FRP, to strengthen these columns in flexure, to be established rapidly by hand. These charts will form part of the IAN, in which their application is explained and examples are presented. The purpose of this paper is to describe the theoretical basis of these design charts, particularly those issues not dealt with in the IAN. The development of these design charts presented numerous challenges, particularly because the total number of charts required had to be limited to a manageable figure whilst catering for all common ranges of column size, reinforcement arrangement, material properties, fibre type, fibre properties etc. Furthermore, the effect of adding FRP cannot be considered in isolation since the contribution to the capacity of the column made by the steel reinforcement and concrete is strongly dependent on the neutral axis depth which is itself dependent upon the amount of FRP provided. In this paper, emphasis is placed on the fundamental theory underpinning the development of the charts rather than the supplementary steps taken to limit the number of charts required. For the covering abstract see ITRD E106406.


  • English

Media Info

  • Features: References;
  • Pagination: p. 516-23

Subject/Index Terms

Filing Info

  • Accession Number: 00801579
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • ISBN: 0-7277-2854-7
  • Files: ITRD
  • Created Date: Nov 8 2000 12:00AM