RANDOM VIBRATION ANALYSIS OF SUBWAY TUNNEL EXCITED BY RUNNING TRAIN

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  • 列車走行による地下鉄トンネルのランダム振動解析

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<p>This paper presents a semi-analytical method for bogie-track-tunnel-soil dynamic interaction problems. The railhead roughness is considered as a random process. To evaluate the mathematical expectation of dynamic response, the relation between the railhead roughness and the expected value of energy spectrum density of acceleration at observation points inside the tunnel is derived explicitly. Based on the developed method, influence of the track-tunnel coupling structure on the frequency spectra is investigated.</p>

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