Numerical Analysis of Train-Induced Vibrations Effect on Existing Masonry Building

Abstract

Based on the masonry structures in Shanghai adjacent to the subway, this paper sets up a detailed numerical model. Measured vibration acceleration serves as the input excitation, and the parameters of the model were calibrated by the measured vibration response. Through numerical analysis, it is studied that metro train-induced vibrations and their influences on existing masonry building from two aspects—one is the vibration level changing with the story height, and the other is the vibration level changing at all the rooms on one floor—the different slab properties, different room size, and other factors affected vibration response distribution. In the precast slab room, the vertical vibration arrangement is greater than that in the cast in situ floor slab room. Vertical vibration at the ash between the precast slabs had a certain amplification effect; the room depth parameters had a small effect on the vibration intensity. The width of the room has a significant effect on the vertical vibration.