Characterization of the dynamic response of buildings to ground‐borne vibration

Abstract

A transfer mobility measurement procedure is proposed as a basis of characterizing the dynamic response of existing buildings to new ground‐borne vibration sources. To demonstrate this technique, an empirical model was derived that can be used to predict the response of buildings to rail transit vibration. The proposed testing procedure and model are based on the comprehensive impact‐testing procedure proposed by Nelson and Saurenman [Transportation Research Record 1143 (1987)] for predicting rail transportation ground‐borne noise and vibration. The transit model for buildings is based on an analysis of measured transfer mobility for residential buildings using an instrumented impact device and an analytic comparison with actual train‐induced vibration. Coupling loss between the ground and building foundation is incorporated in the model, as is amplification of building vibration by floor resonances. Examination of resonance conditions is made possible by modal testing. By making adjustments to the model, it is possible to extend the result to other sources, such as roadways.