Header menu link for other important links
X
Improvement of IS 1343 procedure for estimation of ultimate moment capacity of PSC sections with bonded tendons
Shinto Paul,
Published in
2008
Volume: 82
   
Issue: 5
Pages: 16 - 24
Abstract
The prevailing version of IS 1343 (1980) needs improvement with respect to the procedure for estimating the ultimate moment capacity of prestressed concrete (PSC) sections. There is a lack of clarity in the specified typical stress-strain curves for two different types of tendons specified in the code especially with regard to the manner in which the specified partial safety factor has to be applied. The code also suggests a simplified method in Appendix B, as an alternative to more rigorous strain compatibility method for estimating the ultimate moment capacity. However, it is seen that the IS 1343 simplified procedure invariably fails to satisfy the condition of force equilibrium and also overestimates the moment capacity. These shortcomings in the code are examined and reviewed in this paper, and suitable modifications are proposed in the form of modified stress-strain curves and simplified tables for incorporation in the forthcoming revision of the code.
About the journal
JournalIndian Concrete Journal
ISSN00194565
Open AccessNo
Concepts (18)
  •  related image
    CODE IMPROVEMENT
  •  related image
    DESIGN TABLES
  •  related image
    FORCE EQUILIBRIUMS
  •  related image
    MOMENT CAPACITIES
  •  related image
    PARTIAL SAFETY FACTORS
  •  related image
    SHORT-COMINGS
  •  related image
    Simplified methods
  •  related image
    SIMPLIFIED PROCEDURES
  •  related image
    STRAIN COMPATIBILITY METHODS
  •  related image
    Stress-strain
  •  related image
    ULTIMATE MOMENT CAPACITY
  •  related image
    Codes (symbols)
  •  related image
    Concrete beams and girders
  •  related image
    Prestressed concrete
  •  related image
    Safety factor
  •  related image
    Stress-strain curves
  •  related image
    TENDONS
  •  related image
    Method of moments