• elastic and plastic buckling of steel arches under in-plane loadings

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1393/02/01
    • تاریخ انتشار در تی پی بین: 1393/02/01
    • تعداد بازدید: 487
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     the paper studies the buckling behaviour of steel arches under vertical inplane loadings. the arches have uniform rectangular sections and their shapes are defined by various mathematical functions. the shapes of some of these arches are frequently encountered in bridge or other ancient constructions built with masonry materials. the study includes the effect of change in heighttospan ratios for the range (0.01, 0.5), with a constant span and fixed end-supports. the stability analyses include both linear and nonlinear steel materials. for the box section under study and for most of the designed sections in arch bridges, plastic buckling could occur earlier than elastic buckling. the studies show that the buckling behaviour of the arch varies with its shape. the results indicate that each arch type should be utilized in a dedicated particular situation for the optimization of the structure.

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