REINFORCED EARTH ON M62 MOTORWAY

A new technique is outlined for reinforced earth structures (made up of soil, reinforcement and facing unit) in which the vertical reinforcing member is incorporated with the horizontal reinforcement and the facing is a non-structural unit. On the basis of economy, galvanized mild steel traps were chosen for the horizontal reinforcement. A block of 100 straps supporting a section near the middle of the wall was made of glass fiber roving impregnated with polyester resin - as an additional experiment. The facing unit was a hexagon based pyramid, 125 mm deep and measuring 600 mm across the flats. A glass reinforcement cement was used for the facing unit. Bunter sandstone from a borrow pit on site was used as the fill material. A discrete gap was formed between each facing unit. Details of construction are briefly described. Construction was in layers with the facing keeping pace with the fill. The maximum area of wall completed including backfilling by 2 men in one day is 60 sq. m. Three general categories of problems have risen with the use of new construction techniques and materials. These problems are related to: the internal stability of the wall and the adequacy and relevance of the present design methods and assumptions, the problem of corrosion or damage of the materials forming the structure, and the general behaviour of the wall and its capacity to accommodate differential settlements and externally imposed stresses, and the internal strain movements of the wall. Comparisons are made of reinforced earth construction costs using the new method and the costs using the French method.

  • Supplemental Notes:
    • Presented at Seminar X (Road Design 1: General Topics) of the PTRC Summer Annual Meeting, Warwick University, England, 8-12 July 1974.
  • Corporate Authors:

    Planning and Transport Res and Computation Co Ltd

    167 Oxford Street
    London W1R 1AH,   England 
  • Authors:
    • JONES, CJF
  • Publication Date: 1974-7

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Filing Info

  • Accession Number: 00096291
  • Record Type: Publication
  • Report/Paper Numbers: PTRC/P/108
  • Files: TRIS
  • Created Date: Sep 10 1975 12:00AM