THE USE OF FASCINES TO REINFORCE FILL EMBANKMENT ON VERY SOFT CLAY

The use was studied of fascines to reinforce the embankment on very soft clay in Southern Thailand. It was observed that the height of the fill embankment up to about 3 meters showed no sign of failure. The settlement rate was light at the first stage after completion of filling, but reduced with time. The embankment is now floating on the soft soil and serves as a feeder road for traffic. Very soft subsoil was found at km 2+480 at the site. The depth of the soft soil is down to about 10 meters below the original ground surface. Silty sand and fine sand were found at a depth greater than 18 meters. The theoretical considerations of the design of fascines on the base of the embankment (based upon the stress distribution caused by the weight of embankment) are outlined. The design considerations are detailed. The wooden sticks used as fascines were about 1-2 meters long and 3-5 centimeters in diameter. Ths sticks are connected to make a long rod. Details are outlined of the placing of the fascines and the filling of the embankment. After 10 months of a light volume of traffic, the embankment was bored to find the elevation of the layers of fascines. As time goes by, the embankment undergoes settlement (due to consolidation) because of the compression that takes place in the subsoil. However, the amount of settlement wighin a certain period of time is not as large as the settlement due to flow of the subsoil.

  • Corporate Authors:

    Thailand Department of Highways

    Materials and Research Division
    Bangkok 4,   Thailand 
  • Authors:
    • Ongskul, S
  • Publication Date: 1973-6

Media Info

  • Features: Figures; References;
  • Pagination: 17 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00098669
  • Record Type: Publication
  • Report/Paper Numbers: No. 8
  • Files: TRIS
  • Created Date: Sep 30 1975 12:00AM