Modeling Cyclic Behavior of Reinforcing Steel: Relevance in Seismic Response Analysis of Reinforced Concrete Structures

Abstract:

In nonlinear dynamic analyses of RC structures based on fiber-based discretization of member cross-sections, the constitutive model used to represent the cyclic behavior of reinforcing steel typically plays a significant role in controlling the structural response especially for nonductile systems. The accuracy of a fiber-section model is almost entirely dependent on the ability of both the concrete and reinforcing steel constitutive material models to represent the overall inelastic behavior of the member. This paper describes observations related to the fundamental properties of reinforcing steel such as buckling, hardening, diminishing yield plateau and growth of curvature, Bauschinger effect, and low-cycle fatigue and strength degradation that are relevant to the overall task of developing an accurate material model for use in seismic response analysis of reinforced concrete structures.

• Periodical: Key Engineering Materials (Volumes 400-402)
• Pages: 301-309
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.400-402.301
• Online since: October 2008
• Authors: Yeong Ae Heo, Guo Wei Zhang, Sashi K. Kunnath, Yan Xiao
• Keywords: Buckling, Cyclic Response, Diminishing Yield Plateau, Low Cycle Fatigue, Reinforcing Steel, Strain-Hardening, Strength Degradation

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