Stability of modified geotextile wrap-around revetments (GWR) for coastal protection Available to Purchase

New shore protection structures are increasingly being required, especially for sandy beaches. In this study, modifications to the geometry of geotextile wrap-around revetments (GWR) and the influence of two different geosynthetics were investigated using small-scale model tests. GWR structures were constructed in a wave flume and subjected to different types of regular wave. Stability and deformation analyses were conducted, along with a comparison between conventional GWR structures and modified systems. The influence of the foundation and scouring was also investigated. Finally, a modified GWR structure design with greater stability and flexibility is presented. Modifications consisted of sewing the geotextile layers together in order to create a homogeneous revetment. Model test results and analyses showed that these modified GWR structures have greater stability and resistance to scour erosion, and therefore are a practical alternative to conventional revetment structures for coastal protection.