工程項目

West Island Line, Hong Kong Tuned at 560Hz, vertical and lateral direction 200m damper section 300m track curvature Medium attenuation baseplate 1 damper per rail support spacing at low rail ¼ damper per rail support spacing at high rail 6dB(A) In-saloon Noise Reduction Q Damper were only installed in quarter…

London Underground Trial Tuned at 560Hz 200m damper section 300m track curvature High attenuation baseplate 5 dampers were installed 2dB(A) Rail Side (2.5m) Noise Reduction Although only 5 dampers were installed, 2 dB(A) noise reduction is already achieved, measured 2.5m from the noisy side of rail (facing the rail without…

Zurich Tuned at 560Hz 100m damper section Straight Track Booted wooden sleeper ½ damper per rail support spacing 3dB(A) Track Side Noise Reduction Although only 5 dampers were installed, 2 dB(A) noise reduction is already achieved, measured 2.5m from the noisy side of rail (facing the rail without dampers). It…

West Rail Line, Hong Kong Tuned at 500-1000Hz 80m damper section 2000m track curvature Floating slab track and medium attenuation baseplate ½ damper per rail support spacing 7dB(A) Long Term Noise Reduction The performance of Q Damper are monitored for over 5 years. Throughout the monitoring period, Q Damper reduces…

East Rail Line Tuned at 500-1000Hz 100m damper section 250m track curvature Concrete sleeper on ballast 1 damper per rail support spacing 10dB(A) Overall Rail Vibration Reduction East Rail Line is run by 2 types of train: MLR and SP1900, SP1900 is the latest model with undercar skirt to reduce…

Location: Kwan Tong Line (Hong Kong) Noise Reduction: -3 to -6 dB(A)

Location: East Rail Line (Hong Kong) Noise Reduction: -3 dB(A)