Train-induced vibration on elevated railway station
来源期刊：中南大学学报(英文版)2013年第12期
论文作者：杨娜 GUO Ting(郭婷) SUN Guo-zhong(孙国忠)
文章页码：3745 - 3753
Key words：elevated railway station; measurement in-situ; vibration propagation; train-induced vibration
Abstract: Results of in-situ vibration measurement carried out at Tianjin West Elevated Railway Station which has the trains running on the station structure were reported. The main excitation source is the train passing through the station. Vibration measurements were recorded in the vertical direction of the supporting track beam, the platform and the steel truss beam of the waiting hall, as well as in the vertical, longitudinal and transverse directions of the roof arch base of the station. Acceleration time responses were obtained. The maximum value, vibration level and one-third octave band RMS spectra of the measured accelerations were studied. The propagation of vibration in different structural floors was discussed. The influence of train speed, distance to the vibration source and the type of train on the structural vibration were analyzed. Results show that the vibration level increases with the train speed, while it attenuates with the distance to the track. Furthermore, the vibration responses of different structural floors were compared, and it is noted that the vertical vibration of the bottom slab of the platform is most severe and the transverse vibration of the roof arch base is the smallest. The results provide reference on the vibration characteristics and vibration energy distribution of this type of “Train on building frame” system used as an elevated railway station.
YANG Na(杨娜)1, GUO Ting(郭婷)1, SUN Guo-zhong(孙国忠)2
(1. School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China;
2. Patent Examination Cooperation Center of Patent Office, State Intellectual Property Office of P. R. China, Beijing 100081, China)
Abstract:Results of in-situ vibration measurement carried out at Tianjin West Elevated Railway Station which has the trains running on the station structure were reported. The main excitation source is the train passing through the station. Vibration measurements were recorded in the vertical direction of the supporting track beam, the platform and the steel truss beam of the waiting hall, as well as in the vertical, longitudinal and transverse directions of the roof arch base of the station. Acceleration time responses were obtained. The maximum value, vibration level and one-third octave band RMS spectra of the measured accelerations were studied. The propagation of vibration in different structural floors was discussed. The influence of train speed, distance to the vibration source and the type of train on the structural vibration were analyzed. Results show that the vibration level increases with the train speed, while it attenuates with the distance to the track. Furthermore, the vibration responses of different structural floors were compared, and it is noted that the vertical vibration of the bottom slab of the platform is most severe and the transverse vibration of the roof arch base is the smallest. The results provide reference on the vibration characteristics and vibration energy distribution of this type of “Train on building frame” system used as an elevated railway station.
Key words:elevated railway station; measurement in-situ; vibration propagation; train-induced vibration
