等分布鉛直荷重を受ける円筒ラチス屋根の部材断面算定法

概要

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This paper presents a proportioning method for constitutive members of cylindrical latticed roofs under uniform vertical loading. The method can be applied to design member sections of long roofs as cylindrical shells. Member axial forces and bending moments for design are first obtained based on FEM linear elastic analysis together with FEM linear buckling analysis for estimating the generalized equivalent slenderness. And, second, the bending moments are amplified considering the interaction between axial force and bending moment. Member elasto-plastic buckling strength is defined based on the theory of column buckling strength curves using the generalized slenderness. To define the buckling strength of members parallel to the generatrix as well as along arch direction, buckling analysis for not only uniform lateral but also axial loading are applied. Finally, a series of FEM elasto-plastic analysis is conducted for cylindrical latticed roofs, which are provided based on the present proportioning method, and a confirmation about availability of the present proportioning method is firmly given.
社団法人日本建築学会の論文
2005-02-28