123 鋼鉄道橋の騒音予測法の検討(交通機関の車外音と都市住環境との共生技術,騒音・振動改善技術)

概要

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Steel railway bridges characteristically tend to generate high-level structure-borne noise. Therefore it is urgently required for railway systems, to decrease the vibration and noise of steel bridges. To develop effective countermeasures against this problem, it is important to study the noise generating mechanism and establish a method to predict the noise of steel bridge. The authors developed a new method for this purpose by combining the analysis of flexural vibration of plate based on the Rayleigh-Ritz method and finite element analysis method (FEM). The former is effective in predicting vibration in a wide frequency range including very high frequency areas, but doesn't suit the vibration analysis of a structure as a whole, while the latter complements the former in performance. In this paper, it is examined whether the proposed analysis method is proper or not by comparing the calculated values with the measured ones.
一般社団法人日本機械学会の論文
2005-07-06