Test and analysis of vibration and noise of elevated&ndash;station&ndash;under&ndash;viaduct on Chengdu to Dujiangyan fast railroad

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Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (7) : 225-232.

Test and analysis of vibration and noise of elevated–station–under–viaduct on Chengdu to Dujiangyan fast railroad

ZHANG Xun, RAN Wenmin, LI Xiao-zhen

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Abstract

A field test was carried out on Chengdu to Dujiangyan fast railroad. Vibration accelerations and sound pressures regarding track beam, platform, waiting hall and office were measured and then analyzed in time domain and frequency domain, respectively. Vibration response of track beam, reaction force of pier, station buildings and structure–borne noise were simulated in frequency domain and then compared with measured data. Results show that: at a train speed of 190 km/h, the vibration of track beam dominates in the frequency range of 40~80 Hz and the maximal value is within the limit specified in standard; the dominant vibration frequencies of office and waiting hall ground are 20~100 Hz, with values close to 80 dB; the dominant noise frequencies on the platform, in the office and waiting hall are respectively 300~2500 Hz, 40~63 Hz and 20~100 Hz, and the low–frequency noises in the two latter locations are extremely higher than the mental and physical discomfort limits; the dominant frequency of pier’s vertical reaction force is 25~63 Hz, which principally causes the vibrations of office and waiting hall ground; the vibration of station buildings and structure–borne noise can be well estimated by the station buildings–soil coupling finite element model and interior boundary element model.

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elevated station / vibration / noise / field test / numerical analysis

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ZHANG Xun, RAN Wenmin, LI Xiao-zhen. Test and analysis of vibration and noise of elevated–station–under–viaduct on Chengdu to Dujiangyan fast railroad[J]. Journal of Vibration and Shock, 2016, 35(7): 225-232

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