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Slope Failure at a Major Cut for a Motorway in Austria — Its Cause and Its Stabilisation
In this case study of a cut for a motorway in the Alpine region of Austria it could be demonstrated that an inadequate pre-construction site investigation can lead to unexpected problems connected with a slope instability. In this instance a dormant fossil slide, discovered by a later geotechnical survey, was in part reactivated by the slope cutting process. A geological model of the slide was made which gave sufficient insight into the event to establish a multi-stage remedial-work scheme. The motorway axis was shifted, a toe load placed and bored piles were constructed within the slope, and in addition, an efficient drainage system was provided. Inclinometers were installed to monitor the deformations of the slope and piles. In case the structural deformation of the piles would have exceeded a set limit, further piles were foreseen as a second stage. The remedial measures taken proved to be successful as demonstrated by plotting the frequent deformation measurements on a time scale.
Slope Failure at a Major Cut for a Motorway in Austria — Its Cause and Its Stabilisation
In this case study of a cut for a motorway in the Alpine region of Austria it could be demonstrated that an inadequate pre-construction site investigation can lead to unexpected problems connected with a slope instability. In this instance a dormant fossil slide, discovered by a later geotechnical survey, was in part reactivated by the slope cutting process. A geological model of the slide was made which gave sufficient insight into the event to establish a multi-stage remedial-work scheme. The motorway axis was shifted, a toe load placed and bored piles were constructed within the slope, and in addition, an efficient drainage system was provided. Inclinometers were installed to monitor the deformations of the slope and piles. In case the structural deformation of the piles would have exceeded a set limit, further piles were foreseen as a second stage. The remedial measures taken proved to be successful as demonstrated by plotting the frequent deformation measurements on a time scale.
Slope Failure at a Major Cut for a Motorway in Austria — Its Cause and Its Stabilisation
Fuchsberger, Martin (author)
Symposium Honoring Dr. John H. Schmertmann for His Contributions to Civil Engineering at Research to Practice in Geotechnical Engineering Congress 2008 ; 2008 ; New Orleans, Louisiana, United States
2008-03-07
Conference paper
Electronic Resource
English
Slope Failure at a Major Cut for a Motorway in Austria-Its Cause and Its Stabilisation
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