Abstract：Because the level and characteristic of the metro train-induced tunnel and ground vibration in the longitudinal direction along the subway line are not very clear, a comprehensive high accuracy analysis of the metro train-induced vibration response of the tunnel base, the tunnel wall and the ground surface in all three directions: the transverse direction perpendicular to the subway line, the vertical direction and the longitudinal direction along the subway line, are carried out through the sliced finite element-infinite element coupling model. The results show that: the attenuation of metro train-induced low frequency vibration below 6Hz on ground surface are very slow in all three directions, and the frequency components of ground surface vibration velocity and acceleration responses in three directions are similar; The train-induced longitudinal vibration response of the tunnel wall in frequency band 1~100Hz is small. At most frequencies in this band, its concrete values are even smaller than those of ground surface longitudinal vibration response; At the tunnel base and the tunnel wall, the train-induced vibration response in the longitudinal direction in frequency band 1~100Hz is significantly smaller than that in the vertical direction, but on the ground surface, the train-induced vibration response in the longitudinal direction has a comparative value with those in the transverse and vertical directions.
马龙祥1,2,刘维宁3，蒋雅君1,2，晏启祥1,2. 基于薄片有限元-无限元耦合模型的地铁列车振动环境影响分析[J]. 振动与冲击, 2017, 36(15): 111-117.
MA Long-xiang 1,2，LIU Wei-ning 3，JIANG Ya-jun 1,2，YAN Qi-xiang1,2. Analysis of metro train-induced vibration influence on surrounding environments based on sliced finite element-infinite element coupling model. JOURNAL OF VIBRATION AND SHOCK, 2017, 36(15): 111-117.
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