| Autor: |
SHI Haiou, LIAO Chunming, ZHANG Ling, FENG Qingsong, CHEN Yanming |
| Předmět: |
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| Zdroj: |
Railway Standard Design; 2022, Vol. 66 Issue 9, p136-141, 6p |
| Abstrakt: |
In order to study the structural vibration characteristics of the subway overlapping transfer station under complex dynamic load conditions, the vehicle-track coupling model and the track-station finite element model are established based on the wheel-rail coupling dynamics principle. The impact of different line overlapping and single-line operation, train braking while pulling in the station and train starting off the station, different load on the vibration characteristics of the structure of the subway overlapped transfer station are analyzed in combination with the on-site test of the subway station. The research results show that the vibration response of the station caused by Line A on the first underground floor is greater than that of the station caused by Line B on the second floor underground. Under subway train arriving and leaving conditions, the floor vibration acceleration for leaving is greater than that for arriving. Regardless of the working conditions, the vibration response is mainly concentrated on the 25~50 Hz and 90~140 Hz frequency bands. The vibration level of the same floor caused by line A exceeds the vibration limit, while the vibration level of the same floor caused by line B meets the vibration limit. The greater the load of a single line of line B trains in different periods of time, the greater the vibration response and amplitude of the station structure. When designing a subway overlapping station, the vibration reduction measures for underground first floor and the starting conditions of the train leaving the station should be addressed. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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