伝達マトリクス法による建築構造システムの局所的減衰評価に関する研究

概要

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In estimating the motion characteristics of a building, the modal decomposition technique is frequently employed. However, it doesn't fit to the estimation of those of subsystems in a building structural system. This paper focuses on the damping estimation of such subsystems. By means of the transfer matrix method, a structure is divided into a number of substructures, which then are to be identified. A standing wave arisen inside a structure is decomposed into forward and backward moving waves in virtue of the wave propagation theory. Then, a local damping factor is estimated from the forward moving wave. This damping factor is regarding the local information, which the modal analysis cannot deal with. To demonstrate the validity of the proposed method, numerical simulations are conducted with respect to four-story building models subjected to random white noise excitations.
社団法人日本建築学会の論文
2000-06-30