Analysis of Bond Deterioration Process in Reinforced Concrete Beam-Column Joints Subjected to Seismic Loading

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: Analysis of Bond Deterioration Process in Reinforced Concrete Beam-Column Joints Subjected to Seismic Loading

Author(s): T. Tada and T. Takeda

Publication: Special Publication

Volume: 123

Issue:

Appears on pages(s): 443-464

Keywords: beams (supports); bond (concrete to reinforcement); bond stress; columns (supports); deterioration; earthquake-resistant structures; hinges (structural); hysteresis; joints (junctions); reinforced concrete; slippage; structural analysis; Structural Resea

Date: 1/1/1991

Abstract:
Describes a theoretical investigation into the hysteretic behavior of hinges in reinforced concrete members subjected to seismic loading. The most important feature of this study is the quantitative evaluation of bond deterioration process between the main reinforcement steel and concrete. An analytical procedure is formulated and a computer program for assessing bond deterioration is developed. End hinges and adjacent bond regions in reinforced concrete members are represented by mathematical models that consist of steel elements, concrete fiber elements, and bond links. Assuming appropriate constitutive curves for these elements, the equilibrium condition of section forces in a hinge is obtained iteratively. This analytical method is applied to the problem of slippage of beam bars in reinforced concrete cruciform beam-column joint subassemblages. The analytical results aptly explain the transient processes of structural behavior observed in experiments, and the quantitative assessment of bond deterioration processes is accomplished satisfactorily.