鉄骨円筒型シェル屋根構造の形状の改良に関する研究

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The present paper proposes an improved geometry that can reduce bending in cylinder latticed roof shells subjected to gravity load, and investigates and discusses its effectiveness focusing the correlation with the structural dimensions of shell. When subjected to gravity load, which is ordinarily critical for cylinder latticed roof shells, large bending moment and deflection often arise nearby the edge line. Under allowable stress design regulation, that harms the lightness, one of the greatest advantages of shell-like structures. On the other hand, construction of a cylinder-like deployable surface is quite easy in comparison with a non-deployable doubly curved surface. Therefore, the improved geometry remains deployable, in which two circular arcs are combined to form the section geometry and the generating line is also strait.
2011-03-25