TY - JOUR

T1 - Wave run-up on mortar-grouted riprap revetments

AU - Kreyenschulte, Moritz

AU - Schürenkamp, David

AU - Bratz, Benedikt

AU - Schüttrumpf, Holger

AU - Goseberg, Nils

N1 - Funding Information: This research was funded by the German Federal Ministry of Education and Research within the project ?Wave Loading and Stability of Hydraulically Bonded Revetments?, grant numbers 03KIS110 and 03KIS111. The project was initiated in the framework of the German Coastal Engineering Research Council. Funding Information: Acknowledgments: The authors thank the technical staff at the Coastal Research Center in Hannover. Further, the authors acknowledge the continued administrative and financial support of the Leibniz Universität Hannover and Technische Universität Braunschweig to operate and maintain the Coastal Research Center and its Large Wave Flume (GWK). The authors further would like to thank the project support group and Prof. Dr.-Ing. Hocine Oumeraci for their scientific support and expertise.

PY - 2020/12/2

Y1 - 2020/12/2

N2 - The wave run-up height is a crucial design parameter that determines the crest height of a sea dike and is used for estimating the number of overtopping waves. Therefore, a reduction of the wave run-up height is generally aspired in the design of dikes, which can be achieved by mortar-grouted riprap revetments (MGRR). Although MGRRs are widely utilized revetments along the German North Sea coast, no investigations into the wave run-up height on this revetment type are available to date. Full-scale hydraulic model tests were hence conducted to investigate wave run-up heights on partially grouted and fully grouted MGRRs. The wave run-up was determined using 2D-LIDAR measurements, which were validated by video data. Partially grouted MGRRs, due to their roughness, porosity, and permeability, reduce wave run-up heights from 21% to 28%, and fully grouted MGRRs due to their roughness reduce wave run-up heights from 12% to 14% compared to smooth impermeable revetments. Influence factors have been determined for four widely used revetment configurations, which can now be used for design purposes. A comparison and subsequent discussion about the representation of the physics of wave run-up by different parameters is carried out with the results presented.

AB - The wave run-up height is a crucial design parameter that determines the crest height of a sea dike and is used for estimating the number of overtopping waves. Therefore, a reduction of the wave run-up height is generally aspired in the design of dikes, which can be achieved by mortar-grouted riprap revetments (MGRR). Although MGRRs are widely utilized revetments along the German North Sea coast, no investigations into the wave run-up height on this revetment type are available to date. Full-scale hydraulic model tests were hence conducted to investigate wave run-up heights on partially grouted and fully grouted MGRRs. The wave run-up was determined using 2D-LIDAR measurements, which were validated by video data. Partially grouted MGRRs, due to their roughness, porosity, and permeability, reduce wave run-up heights from 21% to 28%, and fully grouted MGRRs due to their roughness reduce wave run-up heights from 12% to 14% compared to smooth impermeable revetments. Influence factors have been determined for four widely used revetment configurations, which can now be used for design purposes. A comparison and subsequent discussion about the representation of the physics of wave run-up by different parameters is carried out with the results presented.

KW - Full-scale hydraulic tests

KW - LIDAR

KW - Mortar-grouted riprap revetment

KW - Parameter study

KW - Wave run-up

UR - http://www.scopus.com/inward/record.url?scp=85097298093&partnerID=8YFLogxK

U2 - 10.3390/w12123396

DO - 10.3390/w12123396

M3 - Article

AN - SCOPUS:85097298093

VL - 12

JO - Water (Switzerland)

JF - Water (Switzerland)

SN - 2073-4441

IS - 12

M1 - 3396

ER -