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Advanced unified failure model on uniformly reinforced concrete annular section members

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Abstract

Based on traditional Nielsen model (Nielsen, Limit analysis and concrete plasticity, Prentice-Hall, Englewood Cliffs 1984), a unified failure model on uniformly reinforced concrete annular section members under combined forces of tension, compression, bending, shear and torsion is introduced. The advantages of this model are that the dowel action of reinforcements is considered and a reasonable adjustment on shear carrying capacity of concrete at failure surface is introduced, which should vary with the normal stress at the member failure surface. The theoretical results of this model are compared with a group of experimental results of annular section members. The comparison has verified that the advanced model is more accurate and feasible to be used for design of annular section members.

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Abbreviations

t :

The thickness of uniformly reinforced concrete slab

A sx , A sy :

Areas of reinforcing bars per unit of length in directions of x and y

σ x , σ y , xy :

Components of the stress tensor

σ s1, τ s1 :

The normal stress and shear stress of reinforcements in x-axis

σ s2, τ s2 :

The normal stress and shear stress of bars in y-axis

σ cx , σ cy , τ cxy :

The stresses of the concrete

f c :

The compressive strength of the concrete

f y :

The yielding stress of reinforcements

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Authors and Affiliations

  1. Department of Civil Engineering, Shanghai Jiaotong University, Shanghai, China

    H. X. Luo & X. L. Liu

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  1. H. X. Luo
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  2. X. L. Liu
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Correspondence to H. X. Luo.

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Luo, H.X., Liu, X.L. Advanced unified failure model on uniformly reinforced concrete annular section members. Mater Struct 48, 1125–1133 (2015). https://doi.org/10.1617/s11527-013-0219-x

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  • DOI: https://doi.org/10.1617/s11527-013-0219-x

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