Subway‐induced floor vibration predictions in super high‐rise multi‐tower building located on over‐depot based on one‐dimensional impedance model

Abstract

SummaryThe regular operation of the subway negatively impacts the occupants of super high‐rise multi‐tower buildings located on over‐depot (MBLO), causing undesirable vibrations. To save engineers time and computational cost, an improved one‐dimensional impedance model of super high‐rise MBLO is established to predict undesirable vibration in the design phase and devise measures to enhance human comfort. The stiffness factor of the thick plate of a large chassis is introduced, and the impedance relationships of coupled beam and floor based on the equivalence of mass and bending stiffness are considered for an improved one‐dimensional impedance model. The vibration response of multi‐story buildings and super high‐rise MBLO is predicted by an improved one‐dimensional impedance model and compared with field measurements and experimental results, respectively. The results show that the vibration transmission law of super high‐rise MBLO can be more accurately predicted when the stiffness factor of thick plates and the impedance relationships of coupled beam and floor are adopted in an improved one‐dimensional impedance model of super high‐rise MBLO.