The problem of repairing roadbed after subgrade failure or landslide is discussed. The type of failure would indicate the kind of treatment needed. Sketches are presented which illustrate some of the various forms of subgrade failure. In subgrade failure it is important to note the rail affected by the failure, the direction of the track movement and the position of the toe of heaving ground. It is noted that the distance of the failure plan beneath top of rail is approximately equal to the distance between the near rail and the toe of heaving ground. The first step in stabilization is the correction of any drainage problem. Methods of correction for specific cases of shallow and deep subgrade failures are detailed. Fresh hydrate lime treatment is the lowest cost per foot of track. Common methods of landslide stabilization include pile driving; grouting and placing an additional berm at the toe (berming). Driving a row of piles can control the slide where the track is not yet involved. Where the entire track is involved, the tred pile structure is appropriate provided that the toe restraint can be achieved on the slide side. Application of grout to a slide can provide positive correction. However, on slides containing the entire track, or on higher fills, grout may not reach the sliding planes. Berming may be used in almost any case but often right-of- way conditions restrict its use.

  • Supplemental Notes:
    • This paper was presented at the regional meeting of the American Railway Engineering Association held on November 6, 1974 in Kansas, Missouri.
  • Corporate Authors:

    American Railway Engineering Association

    59 East Van Buren Street
    Chicago, IL  United States  60605
  • Authors:
    • Farris, J B
  • Publication Date: 1975-1

Media Info

  • Features: Figures;
  • Pagination: p. 419-431
  • Serial:
    • Volume: 76
    • Issue Number: 651
    • Publisher: American Railway Engineering Association

Subject/Index Terms

Filing Info

  • Accession Number: 00096898
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Sep 10 1975 12:00AM