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Optimization of stabilization of highway embankment slopes using driven piles : phase I.
  • Published Date:
    2010-12-01
  • Language:
    English
Filetype[PDF-1.39 MB]


Details:
  • Corporate Creators:
  • Publication/ Report Number:
  • Resource Type:
  • Geographical Coverage:
  • OCLC Number:
    729575031
  • Edition:
    Final.
  • NTL Classification:
    NTL-HIGHWAY/ROAD TRANSPORTATION-HIGHWAY/ROAD TRANSPORTATION ; NTL-HIGHWAY/ROAD TRANSPORTATION-Bridges and Structures ; NTL-HIGHWAY/ROAD TRANSPORTATION-Soils and Geology ;
  • Abstract:
    This study determined the feasibility of using driven piles to stabilize highway embankment slopes. The activities

    performed under this study were a detailed literature review, a national survey of state DOTs, a review of inspection and

    stabilization mitigation reports, targeted field inspections, a cost comparison analysis, and a finite element study. The

    results of this study show that driven piles can be a cost-effective solution to stabilizing highway embankment slopes.

    The literature review showed that there has been significant research done concerning the lateral capacity of piles. This

    research tends to be focused on different applications, but still shows that piles have significant lateral capacity. The

    survey conducted shows that several DOTs have used driven piles to stabilize highway embankment failures and most of

    these departments would recommend future use. Also three DOTs have performed similar research using plastic pins to

    stabilize embankments. The site visits allowed the research team to identify two sites, the Muddy Pass slide and also the

    Rye slide, as potential sites for investigation under Phase II of the project. These slides in particular had broad shoulders

    along the highway that provide better accessibility. The cost comparison analysis showed that for a particular slope,

    driven piles would cost $41 per linear foot of road stabilized. This was compared to drilled shafts and launched soil nails

    which had estimated costs of $32 and $130 per linear foot, respectively. The finite element study showed that the factor

    of safety for a stabilized slope could be significantly improved with pile installation.

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