ATTENUATION WITH DISTANCE OF TRAFFIC-INDUCED VIBRATIONS

The purpose of this study is to investigate the propagation characteristics of the traffic-induced vibrations and to make a prediction method of the attenuation with distance of the traffic-induced vibrations. Field tests were performed by using test trucks, and ground vibrations were measured on the ground surface and in the ground at depths of 2 and 4 M. An investigation of the real traffic-induced vibrations all over Japan was carried out and ground vibrations were measured as far as 20 M from the centre of the outside lane. Conclusions obtained from the investigations are following: (I) The Rayleigh wave is dominant in the traffic-induced vibrations. (II) The vibration due to large truck (the mass is about 20 mg) has almost the same frequency as small truck (the mass is about 10 mg). Frequency of the traffic-induced vibrations is mainly determined by ground soil conditions. (III) The higher the frequency of the ground vibration, the larger the attenuation with distance. One of the reasons for this is that soils have rate-independent damping characteristics. (IV) The larger the acceleration at reference point (at a distance of 5 M from the centre of the outside lane), the larger the attenuation with distance. One of the reasons is that the propagation velocity and the damping ratio of soils depend on shear strain even in a very small strain region. (V) In the condition that the acceleration at reference point is the same, soft ground has smaller attenuation with distance than hard ground. (VI) Quantitatively vibration level reduces 1-7 db per double distance. (TRRL)

  • Availability:
  • Corporate Authors:

    Japanese Society of Soil Mech & Foundation Engrs

    Tokyo,   Japan 
  • Authors:
    • TANIGUCHI, E
    • SAWADA, K
  • Publication Date: 1979-6

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 15-28
  • Serial:
    • SOILS AND FOUNDATIONS
    • Volume: 19
    • Issue Number: 2
    • Publisher: JAPANESE GEOTECHNICAL SOCIETY
    • ISSN: 0038-0806

Subject/Index Terms

Filing Info

  • Accession Number: 00308869
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, TRIS
  • Created Date: Jun 9 1980 12:00AM