Transportation Geotechnics ( IF 5.3 ) Pub Date : 2020-08-29 , DOI: 10.1016/j.trgeo.2020.100422 Xiaohui Zhang , Shunhua Zhou , Chao He , Honggui Di , Jinbiao Si
This paper presents a field measurement of the train-induced vibration in the northwest Shanghai, where Shanghai Metro Line 11 crosses under Beijing-Shanghai Railway. Ground and tunnel accelerations are measured for the separate and simultaneous passages of the ground and subway trains. Vibration characteristics are subsequently analyzed in the time domain and in the frequency domain. Measurement results show that the ground vibration acceleration level (VAL) induced by the simultaneous operation of the ground and subway trains is 6 ~ 13 dB greater than that induced by the separate operation for the frequency range 20 ~ 160 Hz. Significant frequency components of the vibration induced by the simultaneous operation are shown to be redistributed to cover those induced by the separate operation. Measured data in this experimental test can also be used to validate future numerical models for predicting train induced vibration of similar embankment-tunnel systems.
中文翻译:
地面铁路路堤和地下穿越地铁隧道的列车振动试验研究
本文提出了对上海西北部列车诱发振动的现场测量,上海地铁11号线在京沪铁路下穿越。测量地面列车和地铁列车同时通过的地面和隧道加速度。随后在时域和频域中分析振动特性。测量结果表明,在20〜160 Hz频率范围内,地面和地铁列车同时运行引起的地面振动加速度水平(VAL)比单独运行引起的振动加速度水平高6〜13 dB。由同时操作引起的振动的重要频率分量显示为重新分布,以覆盖由单独操作引起的振动。