Stabilization of Coastal Slopes by Anchored Geosynthetic Systems

Centrifuge model studies on anchored geosynthetic slopes for coastal shore protection

“…However, Ghiassian et al (1997) suggest that working stress should be limited to less than 40% of the peak strength to assure that creep and stress relaxation do not affect performance adversely. In anchored geosynthetic, a reduction in anchor loads attribute to that of geosynthetic tension.…”

“…Generated stresses beneath the geosynthetic fabric are not uniform and are function of fabric configuration. However this issue has no significant influence on mass stability of a slope due to Boussinesq's stress distribution effect with depth, but could be important with respect to near-surface particle stability (Ghiassian et al, 1997).…”

“…Also, if geogrids or geonets are used, AGS can be combined with biotechnical stabilization techniques using vegetation and plants to provide more shear resistance against instability. Advantages of AGS in shore protection rather than other conventional methods were discussed by Ghiassian et al (1997).…”

“…To resolve this problem, Hryciw (1990) suggested the installation of anchors along parallel rows running along the slope contours to enhance curvature and erosion cutoffs. Alternatively, Ghiassian et al (1997) suggested using rigid horizontal bars, attached to the geosynthetic and connected to the anchor rods in order to develop a uniform curvature along the slope length to facilitate two dimensional slope stability analyses. Ghiassian et al (1997) presented an analysis for designing AGS slopes on the basis of an infinite slope theory considering seepage forces under any orientation.…”

“…Alternatively, Ghiassian et al (1997) suggested using rigid horizontal bars, attached to the geosynthetic and connected to the anchor rods in order to develop a uniform curvature along the slope length to facilitate two dimensional slope stability analyses. Ghiassian et al (1997) presented an analysis for designing AGS slopes on the basis of an infinite slope theory considering seepage forces under any orientation. Comparison between analytical and experimental results showed that AGS loads tend to modify failure behavior from the translational sliding to the curvilinear rotational failure.…”