TY - JOUR
T1 - Re-Analysis of Run-Up Levels for Slender Monopiles
AU - Garborg, Karsten
AU - Andersen, Thomas Lykke
AU - Skourup, Jesper
AU - Frigaard, Peter
PY - 2020
Y1 - 2020
N2 - In the present paper, the experimental data on wave run-up on slender monopiles from recently published small and large scale tests are reanalyzed using different methods for the wave analysis. The hypothesis is that the post processing has an impact on the results, due to depth limited and highly nonlinear waves in many of the tests. Thus, the identified maximum waves by a zero-down crossing analysis are highly influenced by the reflection analysis method as well as by bandpass filtering. The stagnation head theory with the run-up coefficient is adopted and new coefficients are presented. The hypothesis is verified, and the applied bandpass filter is identified as a large contributor to conservatism in previous studies, as the steep, nonlinear waves that produce the highest run-up can be heavily distorted by the bandpass filter.
AB - In the present paper, the experimental data on wave run-up on slender monopiles from recently published small and large scale tests are reanalyzed using different methods for the wave analysis. The hypothesis is that the post processing has an impact on the results, due to depth limited and highly nonlinear waves in many of the tests. Thus, the identified maximum waves by a zero-down crossing analysis are highly influenced by the reflection analysis method as well as by bandpass filtering. The stagnation head theory with the run-up coefficient is adopted and new coefficients are presented. The hypothesis is verified, and the applied bandpass filter is identified as a large contributor to conservatism in previous studies, as the steep, nonlinear waves that produce the highest run-up can be heavily distorted by the bandpass filter.
KW - Wave run-up
KW - Vertical circular cylinder
KW - Offshore wind turbines
KW - service platformdesign
KW - small and large scale model tests
KW - Wave analysis
KW - Wave run-up
KW - Vertical circular cylinder
KW - Offshore wind turbines
KW - service platformdesign
KW - small and large scale model tests
KW - Wave analysis
U2 - 10.1142/S2529807019500027
DO - 10.1142/S2529807019500027
M3 - Journal article
SN - 2529-8070
VL - 2
JO - International Journal of Ocean and Coastal Engineering
JF - International Journal of Ocean and Coastal Engineering
IS - 01n02
M1 - 1950002
ER -