下部構造に支持された空間構造の振動解析用質点簡易モデル

概要

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The present paper proposes an algorithm for an efficient analysis based on which the dynamic interaction between a spatial structure and its supporting substructure can be effectively considered. The super-structure is assumed an elastic continuous shell or lattice structure, and the substructure is assumed a structure, which can be represented as a system of shear and lamped mass model. The representation of the super-structure by a mode superposition method leads the total system to a much simplified one in which a series of parallel lamped mass models for the super-structure stand on the top of the substructure. Next, the paper investigates the accuracy of the lamped mass model proposed in this study. Dynamic response analyses of a single layer dome supported by a substructure are carried out separately with equivalent lamped mass models and full models. From the comparison between the both numerical studies, it is confirmed that; (1) discrepancies of the equivalent model and the full model depend on the magnitude of the sum of squared participation factors, (2) if the sum of the squared participation factors is the greeter than 0.9, the equivalent lamped mass model can be tolerable in errors.
一般社団法人日本建築学会の論文
2002-03-20