網目形状および載荷形式の異なる二層立体ラチスドームの弾塑性座屈性状および耐力評価

概要

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This paper is intended as an investigation of the static buckling behavior of double-layer latticed domes with various mesh patterns and loading types. The treated mesh patterns are a square pattern (S-pattern) and a diagonal pattern (D-pattern). The combining mesh patterns for the domes as "mesh pattern for upper layer + mesh pattern for lower layer" are "S-pattern + S-pattern", "S-pattern + D-pattern" and "D-pattern + S-pattern". The loading types are an uniformly distributed loading and an asymmetrically distributed loading. The method of numerical analysis is an elasto-plastic buckling analysis taking into account the geometrical nonlinearity. Based on the results, first, the effects of the mesh pattern and the loading type on the static buckling behavior are made clear. Finally the initial yield load and the ultimate load are estimated by using Modified Dunkerley Formulation as a function of generalized slenderness ratio Λ with knock-down factor γ.
一般社団法人日本建築学会の論文
2006-03-20