Abstract
Having the entrance/exit depot line of Guogongzhuang metro depot of Beijing metro line 9 as the background, ballasted track-soil model is established and simulated. The accuracy of the model is proved comparatively high. Taking the nearby building as the research object, effects of structure characteristics modification of the building on slab vibration are discussed. The results suggest that: The trend of the vibration levels of slabs changing with the floors is the same as that of the benchmark example after changing the structure characteristics of the building. As the dimension of columns increases and the performance of the concrete is better, the vibration levels of the building decrease obviously. As the thickness of slabs increases, the effect is much more complicated. The vibration level of each slab increases from basement 2 to the 14th floor by 0.02 to 8.4dB. The vibration level of each slab decreases from the 15th floor to the top floor, and the vibration levels are 0.8 to 9.9dB lower than that of the benchmark example.
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