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Home > Publications > 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.
Title: Effect of Tie Spacing on Inelastic Buckling of Reinforcing Bars
Author(s): S. T. Mau
Publication: Structural Journal
Appears on pages(s): 671-677
Keywords: buckling; columns (supports); finite element method; loads (forces); reinforcing steels; strain hardening; stress-strain relationships; ties (reinforcement); Structural Research
Abstract:The inelastic buckling and load-carrying capacity of reinforcing steels in concrete columns are studied by an accurate finite element method. A critical tie spacing exists for reinforcing steels under monotonic loading. The peak loads for cases with a spacing below and above the critical spacing differ greatly. Below the critical spacing, the tangent modulus theory used in previous works for tie spacing and tie stiffness determination may be applied; above the critical spacing, the theory may not be expected to predict the load-carrying capacity accurately. The critical spacing varies with the shape of the stress-strain curve of the reinforcing steel. A parametric study is carried out to establish the range of critical spacing for typical high-strength steels.
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