The ideal retrofit solution to railway noise
Rigid Contract Tuned Mass Rail Damper
by Jabez Innovation Limited
40 to 1600 Hz
-70 to -90 %
-4 to -12 dB(A)
-4 to -8 dB
-8 to -18 dB
*Subjected to rail baseplate stiffness
** Subjected to P2 resonance contribution to GBN
Groundborne noise retrofit mitigations
Groundborne noise (GBN) reduction by rail damper is a “MISSION IMPOSSIBLE” due to small damper mass against huge mass in tunnel structure. However, for GBN caused by rail P2 resonance (unsprung mass resonance, in the range of 40 Hz to 100 Hz), Q-Damper is able to suppress the rail P2 resonance, and the associated GBN. The floor vibration data of the P2 resonance laboratory indicates GBN reduction in the range of 4 to 8dB(A). It is the only rail damper in the world strong enough to reduce GBN. Apart from traditional GBN mitigation by altering trackform design, RCTMD could be the alternative retrofit solution.
You choose the density to fit your budget
Q Damper is modular design able to fit up to 3 units in the space between rail support. Half installation of RCTMD is already enough to reduce rail noise quieter than other sources (motor noise, wheel noise, etc.). Combined with our latest patented technology, -4 to 12 dB(A) noise reduction is guaranteed.