組積弾性体系の地震応答解析法

概要

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During the 1978 Miyagi-ken-oki earthquake in Japan, many stacked crates collapsed in warehouses and factories, not only causing economic losses but also creating menace to the safety of workers. Full scale vibration tests were carried out to study the dynamic properties of the stack. Vibration modes at small amplitude were similar to that of the uniform flexural cantilever beam. At larger amplitude, the vibration period became longer, and the rocking motion was observed at the bottom of the stack. An analytical method was developed to reduce the dynamic properties of stacked elastic body into a single-degree-of-freedom model by means of Galerkin's method. The model considers the elastic vibration before uplifting, the conservation of angular momentum at the instance of uplifting and landing, and the decrease of base shear after uplifting.
社団法人日本建築学会の論文
1984-07-30