125 高架構造物音の発生メカニズムに関する検討(オーガナイズドセッション : O.S.6 交通騒音/振動の制御(自動車・鉄道・航空機II))

概要

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It was known that the radiated sound from bridge structures is sometimes larger than the directly transmitted sound from traffic. In ordinary case we estimated such a radiated sound with the hypothes of plain wave. But if we think about the proper countermeasure against the radiated sound, it will be needed the study of radiation mechanism in detail. We tried the approximately calculation between the radiated sound and bridge vibration, using "Plain radiator as array of Point Sources" and "Point force excitation calculation" and compared with the "Radiation area S" from the measured values that were obtained from the PC-hollow and Metal girder elevated bridges.
社団法人日本機械学会の論文
2001-06-05