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Slope Stability Analysis of Three Earthen Levee Strengthening Systems under Hurricane Overtopping Flow Conditions
Slope stability of levees during hurricane overtopping conditions involving storm surge and wind generated wave action is an important aspect to assess the safety of earthen levees. A comprehensive slope stability investigation was conducted for an earthen levee subjected to full-scale overtopping scenarios, including storm surge only overflow, wave only overtopping, and combined wave and surge overtopping conditions. The crest and the landside of the levee were strengthened by three armoring systems, i.e, high performance turf reinforcement mat (HPTRM), roller compaction concrete (RCC), and articulated concrete block (ACB) to protect against overtopping erosion. A conceptual model for HPTRM/RCC/ACB strengthened levees as well as a methodology for analysis and incorporation of various overtopping flow conditions in levee slope stability is presented. In this paper, stability of three levee strengthening systems is compared. The findings of this study indicate that HPTRM/RCC/ACB levee strengthening improves stability of the levee significantly during wave only as well as combined storm surge and wave overtopping conditions. However, during storm surge conditions, the factor of safety is only improved slightly as a result of strengthening of the levee by HPTRM/RCC/ACB.
Slope Stability Analysis of Three Earthen Levee Strengthening Systems under Hurricane Overtopping Flow Conditions
Slope stability of levees during hurricane overtopping conditions involving storm surge and wind generated wave action is an important aspect to assess the safety of earthen levees. A comprehensive slope stability investigation was conducted for an earthen levee subjected to full-scale overtopping scenarios, including storm surge only overflow, wave only overtopping, and combined wave and surge overtopping conditions. The crest and the landside of the levee were strengthened by three armoring systems, i.e, high performance turf reinforcement mat (HPTRM), roller compaction concrete (RCC), and articulated concrete block (ACB) to protect against overtopping erosion. A conceptual model for HPTRM/RCC/ACB strengthened levees as well as a methodology for analysis and incorporation of various overtopping flow conditions in levee slope stability is presented. In this paper, stability of three levee strengthening systems is compared. The findings of this study indicate that HPTRM/RCC/ACB levee strengthening improves stability of the levee significantly during wave only as well as combined storm surge and wave overtopping conditions. However, during storm surge conditions, the factor of safety is only improved slightly as a result of strengthening of the levee by HPTRM/RCC/ACB.
Slope Stability Analysis of Three Earthen Levee Strengthening Systems under Hurricane Overtopping Flow Conditions
Amini, Farshad (author) / Li, Lin (author) / Xu, Yingzi (author)
Geo-Congress 2013 ; 2013 ; San Diego, California, United States
Geo-Congress 2013 ; 1875-1884
2013-02-25
Conference paper
Electronic Resource
English
| British Library Conference Proceedings | 2013
Design of Earthen Levee Strengthening with HPTRM for Hurricane Overtopping Conditions
| Tema Archive | 2013
| Taylor & Francis Verlag | 2013