Modeling and analysis of shear-critical ECC members with anisotropic stress and strain fields

Benny Suryanto, Kohei Nagai, Koichi Maekawa

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    23 Citations (Scopus)

    Abstract

    This paper describes an attempt to predict the response of shear-critical ECC members that exhibit strong anisotropic stress and strain fields. The ECC members investigated include pre-cracked ECC plates under stress field rotation, orthogonally-reinforced ECC (R/ECC) panel under pure shear, and shear-critical R/ECC beams under reversed cyclic loading. To achieve a simple yet accurate prediction, the mechanics of the ECC are represented by smeared models using a fixed crack approach. The applicability of these models is demonstrated through a simulation of ECC plates and R/ECC panel responses. This demonstrates the importance of an appropriate shear transfer model in representing essential behaviors of ECC in an anisotropic field. Predictions of these models were then compared against experimental results of shear-critical R/ECC beams with a M/Vd ratio of 1.0 and 0.5. For beams with a M/Vd ratio of 1.0, a good agreement is observed in terms of hysteretic response, crack pattern, and failure mechanisms. For beams with a 0.5 M/Vd ratio, the analysis somewhat underestimates the beam capacity, although it does predict a correct failure mechanism. Overall, this paper demonstrates that practical application of nonlinear finite-element analysis to ECC structural members is possible.

    Original languageEnglish
    Pages (from-to)239-258
    Number of pages20
    JournalJournal of Advanced Concrete Technology
    Volume8
    Issue number2
    Early online date2 Jul 2010
    DOIs
    Publication statusPublished - Jul 2010

    Keywords

    • ECC
    • shear-critical
    • shear modeling

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