Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Performance of Permanent Ground Anchors for Landslide Stabilization
Permanent ground anchors, also known as tiebacks, are used widely for stabilization of active landslides. The basic concept is that anchor forces provide resistance to landslide driving forces, thereby increasing the factor of safety against failure. While design manuals are available, very little guidance is provided in choosing between the range of options available for selection of design loads, lock-off loads, spacing, and type of structural reaction system. In this report, four recent case histories in which anchor loads were monitored for 1 to 5 years after construction are reviewed and analyzed to assess the influence of various design parameters on system performance. Changes in anchor loads over time are evaluated in terms of design load magnitude, observed slope movements, and type of structural reaction system. The Deer Creek landslide stabilization, a Wyoming DOT project that was monitored by the authors, is the primary focus of this review, but data from three other projects involving monitored anchor loads are included. The finite element method (FEM) computer program PLAXIS is utilized to model the Deer Creek stabilization system in order to evaluate the usefulness of FEM analyses of anchored systems and to capture observed anchor behavior during and after construction.
Performance of Permanent Ground Anchors for Landslide Stabilization
Permanent ground anchors, also known as tiebacks, are used widely for stabilization of active landslides. The basic concept is that anchor forces provide resistance to landslide driving forces, thereby increasing the factor of safety against failure. While design manuals are available, very little guidance is provided in choosing between the range of options available for selection of design loads, lock-off loads, spacing, and type of structural reaction system. In this report, four recent case histories in which anchor loads were monitored for 1 to 5 years after construction are reviewed and analyzed to assess the influence of various design parameters on system performance. Changes in anchor loads over time are evaluated in terms of design load magnitude, observed slope movements, and type of structural reaction system. The Deer Creek landslide stabilization, a Wyoming DOT project that was monitored by the authors, is the primary focus of this review, but data from three other projects involving monitored anchor loads are included. The finite element method (FEM) computer program PLAXIS is utilized to model the Deer Creek stabilization system in order to evaluate the usefulness of FEM analyses of anchored systems and to capture observed anchor behavior during and after construction.
Performance of Permanent Ground Anchors for Landslide Stabilization
2003
90 pages
Report
Keine Angabe
Englisch
Performance of Permanent Ground Anchors for Landslide Stabilization
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