USE OF FLOATING-SLAB TRACK BED FOR NOISE AND VIBRATION ABATEMENT

Underground rail rapid transit systems can produce ground-borne vibration and noise from trains that creates intrusion in buildings located close to the underground facilities. This intrusion is usually a low-frequency (31.5- to 125-Hz range) noise or rumble transmitted via the intervening ground to the building structure. The use of floating-slab track bed, concrete slabs supported on resilient elements, to isolate the vibration of the rail support from the subway structure has been effective in reducing the transmission of vibration and noise to the surrounding ground and nearby buildings. This paper presents details on two types of lightweight floating-slab track bed; i.e., the continuous and the discontinuous designs. Some sections of continuous floating-slab track bed are in service at the Washington Metropolitan Area Transit Authority Metro System, and measurements of the reduction of the noise and vibration levels are presented.

Media Info

  • Media Type: Print
  • Features: Figures; Maps; Photos;
  • Pagination: pp 45-58
  • Monograph Title: Track systems and other related railroad topics
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00183893
  • Record Type: Publication
  • ISBN: 0309026822
  • Files: TRIS, TRB
  • Created Date: Dec 3 1981 12:00AM