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A platform for research: civil engineering, architecture and urbanism
Analysis of Subway Vibration Propagation Characteristics in Rock Stratum
Studies focus on the propagation characteristics of vibration induced by metro in rock stratum. The typical rock stratum metro in China was selected as the study object. The rail-tunnel-stratum finite element model was established using finite element analysis method. Steel rail, tunnel wall, and ground vibration of different distances above the tunnel were obtained by the “three-dimensional integration” synchronous test method of ground and tunnel vibration. The transmission loss differences of different transmission paths and the vibration transmission characteristics of rock strata were analyzed based on the transfer path analysis method. Results showed that the peak value of ground vibration spectrum was maintained in 12.5~20 Hz or 50~80 Hz due to the transmission loss of low valley frequency band in rock vibration. The vibration in the frequency band of 50~80 Hz was not attenuate with the increase of test distance. Hence, the frequency band was more likely to affect the surrounding environment vibration in the metro operation.
Analysis of Subway Vibration Propagation Characteristics in Rock Stratum
Studies focus on the propagation characteristics of vibration induced by metro in rock stratum. The typical rock stratum metro in China was selected as the study object. The rail-tunnel-stratum finite element model was established using finite element analysis method. Steel rail, tunnel wall, and ground vibration of different distances above the tunnel were obtained by the “three-dimensional integration” synchronous test method of ground and tunnel vibration. The transmission loss differences of different transmission paths and the vibration transmission characteristics of rock strata were analyzed based on the transfer path analysis method. Results showed that the peak value of ground vibration spectrum was maintained in 12.5~20 Hz or 50~80 Hz due to the transmission loss of low valley frequency band in rock vibration. The vibration in the frequency band of 50~80 Hz was not attenuate with the increase of test distance. Hence, the frequency band was more likely to affect the surrounding environment vibration in the metro operation.
Analysis of Subway Vibration Propagation Characteristics in Rock Stratum
Ju, Long-hua (author) / Wang, An-bin (author) / Gao, Xiao-gang (author) / Li, Wei (author) / Liu, Lang (author)
13th Asia Pacific Transportation Development Conference ; 2020 ; Shanghai, China (Conference Cancelled)
2020-06-29
Conference paper
Electronic Resource
English
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