Strain Rate-Dependent Interaction Diagrams for Reinforced Concrete Sections


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Title: Strain Rate-Dependent Interaction Diagrams for Reinforced Concrete Sections

Author(s): Parviz Soroushian and Kienuwa Obaseki

Publication: Journal Proceedings

Volume: 83

Issue: 1

Appears on pages(s): 108-116

Keywords: beams (supports); columns (supports); mathematical models; earthquake resistant structures; reinforced concrete; static loads; strains; stress-strain diagram.

Date: 1/1/1986

Strain rate-dependent models of steel and concrete were used in fiber modeling of reinforced concrete sections. This model was used for studying the strain rate effect on the axial-flexural strengths of typical reinforced concrete sections. Results are presented in the form of interaction diagrams for different strain rates ranging from the slow rates expected during the quasi-static laboratory tests to the high rates observed during the response of structures to seismic and blast loadings. Influence of the position and percentage of the longitudinal steel; the material properties; and the size, shape, and confinement of the section on the strain rate effects are discussed. Comparisons are made with available experimental results.