ESTIMATING GRASS SLOPE RESILIENCY DURING WAVE OVERTOPPING: RESULTS FROM FULL-SCALE OVERTOPPING SIMULATOR TESTING

Christopher Thornton, Steven Hughes, Bryan Scholl, Natalie Youngblood

Abstract


This paper summarizes full-scale laboratory wave overtopping simulation test results from three years of testing conducted at the Colorado State University wave overtopping test facility. These results are specific to the tested soils and grass cover, so direct application to coastal dikes and levees built using different soils and grass species, or to locations subjected to different wave overtopping conditions, is not advisable. For this reason, robust design guidance will require significantly more data than are presently available. Tentative design methods are proposed for extension of the relatively few full-scale test results to other situations having different levee geometry, different wave conditions, and different grass/soil parameters. The intention is to provide a viable framework that can be extended as more knowledge is gained from additional testing with different grass/soil combinations.

Keywords


wave overtopping; earthen dikes; grass resiliency; overtopping simulator; turf reinforcement mats

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References


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DOI: https://doi.org/10.9753/icce.v34.structures.52