In-situ measurement and analysis of the influence of a building on ground vibration induced by metro

A construction field nearby a metro line was selected for vibration measurement. In situ measurements for free field vibration and building-field vibration were performed before and after the construction. The influence of the building on the ground vibration were studied by data analysis. The results show that the influence of the building's mass is weak on the ground vibration, while the reflection and obstruction of the walls and baseboard in the basement is prominent. The energy focus region is made by the wave reflection on the basement wall, so the ground vibration is amplified in some local region. The maximum amplification ratio is more than 100%. The energy shielding zone is made in the basement by the obstruction of the wall and baseboard and the vibration is reduced obviously. The minimum reduction ratio is still more than 45%.