Analysis and design of demountable embedded steel column base connections

Dongxu Li, Brian Uy, Vipul Patel, Farhad Aslani

    Research output: Contribution to journalArticle

    11 Citations (Scopus)

    Abstract

    This paper describes the finite element model for predicting the fundamental performance of embedded steel column base connections under monotonic and cyclic loading. Geometric and material nonlinearities were included in the proposed finite element model. Bauschinger and pinching effects were considered in the simulation of embedded column base connections under cyclic loading. The degradation of steel yield strength and accumulation of plastic damage can be well simulated. The accuracy of the finite element model is examined by comparing the predicted results with independent experimental dataset. It is demonstrated that the finite element model accurately predicts the behaviour and failure models of the embedded steel column base connections. The finite element model is extended to carry out evaluations and parametric studies. The investigated parameters include column embedded length, concrete strength, axial load and base plate thickness. Moreover, analytical models for predicting the initial stiffness and bending moment strength of the embedded column base connection were developed. The comparison between results from analytical models and those from experiments and finite element analysis proved the developed analytical model was accurate and conservative for design purposes.

    Original languageEnglish
    Pages (from-to)303-315
    Number of pages13
    JournalSTEEL AND COMPOSITE STRUCTURES
    Volume23
    Issue number3
    DOIs
    Publication statusPublished - 28 Feb 2017

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    Steel
    Analytical models
    Axial loads
    Bending moments
    Yield stress
    Stiffness
    Concretes
    Plastics
    Finite element method
    Degradation
    Experiments

    Cite this

    Li, Dongxu ; Uy, Brian ; Patel, Vipul ; Aslani, Farhad. / Analysis and design of demountable embedded steel column base connections. In: STEEL AND COMPOSITE STRUCTURES. 2017 ; Vol. 23, No. 3. pp. 303-315.
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    abstract = "This paper describes the finite element model for predicting the fundamental performance of embedded steel column base connections under monotonic and cyclic loading. Geometric and material nonlinearities were included in the proposed finite element model. Bauschinger and pinching effects were considered in the simulation of embedded column base connections under cyclic loading. The degradation of steel yield strength and accumulation of plastic damage can be well simulated. The accuracy of the finite element model is examined by comparing the predicted results with independent experimental dataset. It is demonstrated that the finite element model accurately predicts the behaviour and failure models of the embedded steel column base connections. The finite element model is extended to carry out evaluations and parametric studies. The investigated parameters include column embedded length, concrete strength, axial load and base plate thickness. Moreover, analytical models for predicting the initial stiffness and bending moment strength of the embedded column base connection were developed. The comparison between results from analytical models and those from experiments and finite element analysis proved the developed analytical model was accurate and conservative for design purposes.",
    keywords = "Analytical model, Demountability, Embedded column base connections, Finite element analysis, Monotonic and cyclic loading",
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    Analysis and design of demountable embedded steel column base connections. / Li, Dongxu; Uy, Brian; Patel, Vipul; Aslani, Farhad.

    In: STEEL AND COMPOSITE STRUCTURES, Vol. 23, No. 3, 28.02.2017, p. 303-315.

    Research output: Contribution to journalArticle

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    AU - Li, Dongxu

    AU - Uy, Brian

    AU - Patel, Vipul

    AU - Aslani, Farhad

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    AB - This paper describes the finite element model for predicting the fundamental performance of embedded steel column base connections under monotonic and cyclic loading. Geometric and material nonlinearities were included in the proposed finite element model. Bauschinger and pinching effects were considered in the simulation of embedded column base connections under cyclic loading. The degradation of steel yield strength and accumulation of plastic damage can be well simulated. The accuracy of the finite element model is examined by comparing the predicted results with independent experimental dataset. It is demonstrated that the finite element model accurately predicts the behaviour and failure models of the embedded steel column base connections. The finite element model is extended to carry out evaluations and parametric studies. The investigated parameters include column embedded length, concrete strength, axial load and base plate thickness. Moreover, analytical models for predicting the initial stiffness and bending moment strength of the embedded column base connection were developed. The comparison between results from analytical models and those from experiments and finite element analysis proved the developed analytical model was accurate and conservative for design purposes.

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