engleski

Buckling analysis of concrete spherical shells

This paper presents a buckling analysis for several notable concrete thin shells around the world. An approach which takes into account the large deflection and plasticity effects was performed using Sofistik software to estimate the buckling load. A geometrically non-linear analysis of these structures with and without geometrical imperfections was performed. To take into account the possible plastification of the material a materially non-linear analysis was performed simultaneously with the geometrically non-linear analysis. The buckling analysis of concrete spherical shells shows that including only one kind of non-linearity does not give a realistic situation and only their combination results in the decreasing of ultimate failure load.

buckling analysis; concrete shells; spherical shells; geometrically non-linear analysis; materially non-linear analysis

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