Numerical investigation of the response of RC columns under blast loads

Margalite Vilnay, D Cotsovos, Leon Chernin

    Research output: Contribution to conferencePaper

    Abstract

    Present work sets out to investigate numerically the dynamic response of reinforced concrete columns under high rate pressure loads generated mainly from far field explosions. Emphasis is given to studying the effect of the applied high rate loads on certain important aspects of structural response affecting the mechanics underlying the exhibited behaviour. Such aspects include the distribution of internal actions (e. g. compressive strain) along the element span, the load-carrying capacity, the deformation profile, the crack formation and propagation process and the mode of failure. A well-established commercial packages (ABAQUS) is employed, as it is capable of carrying out static and dynamic three-dimensional nonlinear finite element analyses while incorporating a material model enabling realistic representation of the brittle nature of concrete behaviour. The finite element model was validated against the results of a test on a reinforced concrete column subjected to a combined action of static axial load and simulated blast load. The model is then employed to study the effects of various parameters including blast intensity, the level of the axial force, the longitudinal and transverse reinforcement on the column’s structural response under blast loads. The results indicate certain similarities some parameters have on column response mainly due to their influence on its stiffness and mode of failure.

    Original languageEnglish
    Publication statusPublished - 2017
    EventCONFAB 2017: The 2nd International Conference on Structural Safety under Fire & Blast Loading - London, United Kingdom
    Duration: 10 Sep 201712 Sep 2017

    Conference

    ConferenceCONFAB 2017
    Abbreviated titleCONFAB 2017
    CountryUnited Kingdom
    CityLondon
    Period10/09/1712/09/17

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  • Cite this

    Vilnay, M., Cotsovos, D., & Chernin, L. (2017). Numerical investigation of the response of RC columns under blast loads. Paper presented at CONFAB 2017, London, United Kingdom.