Reliability of load-Deformation Estimate for High-Strength Reinforced Concrete Beams

ABOUT THE INTERNATIONAL CONCRETE ABSTRACTS PORTAL

  • The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.

International Concrete Abstracts Portal

  


Title: Reliability of load-Deformation Estimate for High-Strength Reinforced Concrete Beams

Author(s): S. Otani and S. Nagai

Publication: Special Publication

Volume: 176

Issue:

Appears on pages(s): 179-196

Keywords: Beams (supports); cracking (fracturing); deformation; high-strength; concrete; loads forces; reinforced concrete; stiffness; tests

Date: 10/1/1998

Abstract:
The applicability of methods, routinely used in Japan in evaluating the force-deformation relationship of normal reinforced concrete (RC) members, was examined for high-strength RC beams. The member end moment-rotation relationship was idealized into a trilinear relation with stiffness change at “cracking” and “yielding.” The routine methods overestimate significantly the observed initial stiffness and underestimate yield deformation. A wide scatter is reported in the observed cracking moment. Yield and ultimate resistance can be conservatively estimated by the routine procedure.