743 鋼鉄道橋の振動測定と予測手法の検討

概要

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Steel railway bridges characteristically tend to generate high-level structure-borne noise. The authors have developed a method to predict structure-borne noise, however it possesses a drawback that it is difficult to calculate directly the exciting force generated by train run. Considering that, in order to estimate the exciting force generated by train run, we exercised the following two types of tests in Hino civil engineering experimental field; one is an impact test and the other is a motorcar running test. As a result, it is revealed that as for the accelerance, which means a vibration acceleration divided by a load obtained by measuring the strain of web of rail, the values measured by the impact test is close to that by the motorcar running test in the range over 100Hz. From this result, it can be said that the exciting force generated by train run is able to be calculated by measuring or analyzing the vibration of rail.
一般社団法人日本機械学会の論文
2006-08-06