Impedance model for estimating train-induced building vibrations

Measured train-induced vibrations at the foundation level and on upper floors in 14-story and 25-story buildings in Shenzhen metro depot were used to validate model predictions of vibration levels at upper floors relative to the foundation vibration. The support structures for both buildings include both columns and load bearing walls where the transmission involves both in-plane shear and dilatation at various angles within the wall though a conclusion from this study is that axial propagation in the vertical direction dominates. The impedance model predictions are in good agreement with the measured floor vibration levels.