Structure-Borne Noise and Vibration Control for Chatswood Interchange

Summary

The Chatswood Interchange project is a transit-oriented development combining multi-family residential and commercial development with a commuter rail station in Chatswood, NSW, Australia. The train station and garage structure would directly support 40-storey residential condominium towers and commercial spaces without benefit of structural breaks or building isolation. The vibration control provisions incorporated into the design include floating slab track, a massive and thick concrete deck, and large cross-section columns. Structure-borne noise and vibration levels were predicted with a finite element model, using an enforced relative displacement between wheel and rail. The predicted structure-borne vibration levels were compared with vibration levels measured at the top of the station structure during partial completion and found to be in reasonable agreement with prediction.