Transmission of Structure-Borne Sound in Buildings above Railway Tunnels

Abstract

Transmission of structure-borne sound in buildings above railway tunnels is studied for a specific case: the sound is assumed to emanate from railway traffic and to be transmitted through the rock foundation into the building. Analytical models are presented for the propagation of structure-borne sound upward in buildings. The models are based on the assumption that the vibrational energy propagates from the foundation in the form of quasi-longitudinal waves. A finite ground impedance is taken into account as well as wave reflection from the roof. Results are presented for buildings constructed with either load-bearing walls or columns.