• an efficient numerical method to define failure surface for concrete structural members repaired by steel jacket

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1390/11/15
    • تاریخ انتشار در تی پی بین: 1390/11/15
    • تعداد بازدید: 687
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     in seismic retrofitting of existing old buildings or reforming the earthquake harmed buildings, sometimes it becomes necessary to improve the seismic performance of concrete sections against future earthquakes by applying steel cover. thus, prediction the factual behavior of steel covered concretes against lateral loads is important and needs implementation of nonlinear analysis and considering materials nonlinear behavior. to perform nonlinear analysis having access to details of section’s failure surface is essential. the failure surface of a cross section can be defined as the locus of points that correspond to ultimate strength. in this article a quick and efficient numerical method based on fibre method concepts is presented to determine failure surfaces for steel covered concretes. moment-curvature diagrams, bending moment- axial force interaction curves and biaxial bending-axial force failure surfaces are defined by this method. the predicted results show high correlation with experimental results.

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