Real Scale Test and Numerical Analysis of Asphalt Track: Roadbed Pressure and Asphalt Concrete Strain

Most of Korean railway is constructed with the ballasted track, high-speed railway such as Gyeongbu line and Honam line is running on the concrete track, a type of ballastless track. The asphalt track, a different type of ballastless, requires no construction joints due to its viscoelasticity and have the advantage of reduced noise and vibration. Other merits of the track include fast restoration from natural disasters of the derailment and easy maintenance. This paper performs a real scale test and numerical analysis to evaluate the behaviors of the asphalt track systems mentioned above. Long-term monitoring was performed on the AC track at Baekwon Station, Gyeongbuk Line by the web-based measurement system. The performance test was conducted, and the data were collected for the analysis. The results confirmed that the behaviors of the AC track are closely related to the seasonal temperature changes. As a result of comparison with numerical analysis, the measured and predicted roadbed pressure and AC strain values as a high-speed train is passing through meet the allowable roadbed pressure and AC strain standard.

  • Supplemental Notes:
    • This paper was sponsored by TRB committee AR050 Standing Committee on Railroad Track Structure System Design.
  • Corporate Authors:

    Transportation Research Board

  • Authors:
    • Le, Tri H M
    • Park, Dae-Wook
    • Lee, Seong-Hyeok
    • Vo, Hai V
    • Seo, Jung-Woo
  • Conference:
  • Date: 2019


  • English

Media Info

  • Media Type: Digital/other
  • Features: Figures; References;
  • Pagination: 5p

Subject/Index Terms

Filing Info

  • Accession Number: 01698295
  • Record Type: Publication
  • Report/Paper Numbers: 19-00249
  • Files: TRIS, TRB, ATRI
  • Created Date: Dec 7 2018 9:51AM