Details
| Original language | English |
|---|---|
| Title of host publication | CoastLab 2024 |
| Subtitle of host publication | Physical Modelling in Coastal Engineering and Science |
| Publication status | Published - 6 May 2024 |
| Event | 9th Conference on Physical Modelling in Coastal Engineering - Delft University of Technology, Delft, Netherlands Duration: 13 May 2024 → 16 May 2024 Conference number: 9 https://coastlab24.dryfta.com/ |
Abstract
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CoastLab 2024: Physical Modelling in Coastal Engineering and Science . 2024.
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research
}
TY - GEN
T1 - Full-Scale Experimental Study On Wave Impacts At Stepped Revetments
AU - Herbst, Maximilian
AU - Kerpen, Nils B.
AU - Schlurmann, Torsten
AU - Schoonees, Talia
N1 - Conference code: 9
PY - 2024/5/6
Y1 - 2024/5/6
N2 - Stepped revetments have shown to be effective in limiting wave overtopping and wave run-up compared to sloped revetments. However, literature on wave impact pressures and comprehensive design guidelines for these structures is scarce. Laboratory experiments support establishing design recommendations. So far, studies for wave impacts at stepped revetments were mainly performed at small scales. Results from these tests are likely to be subjected to scale effects and therefore inaccurately replicate the wave-structure interaction at full scale. This study quantifies scale effects of wave impact characteristics for design cases based on a comparison to small-scale tests (Kerpen et al., 2018). Full-scale flume experiments were studied with a slope of 1:3 and uniform step heights of 0.17 m and 0.50 m in the Large Wave Flume (GWK) in Hannover, Germany. Horizontal and vertical wave impacts were measured at 15 locations in the plunging region of the revetment for a range of wave steepnesses (). The results show that previous small-scale tests underestimate design wave impact pressures by a factor of up to 7.7. Impact loadings occur considerably faster than at small scale with relative peak rising times decreasing by a factor of up to 5.6. Prediction formulae are derived for the vertical distribution of horizontal impact pressures (Figure 1b) as well as for temporal characteristics of these pressures at stepped revetments.
AB - Stepped revetments have shown to be effective in limiting wave overtopping and wave run-up compared to sloped revetments. However, literature on wave impact pressures and comprehensive design guidelines for these structures is scarce. Laboratory experiments support establishing design recommendations. So far, studies for wave impacts at stepped revetments were mainly performed at small scales. Results from these tests are likely to be subjected to scale effects and therefore inaccurately replicate the wave-structure interaction at full scale. This study quantifies scale effects of wave impact characteristics for design cases based on a comparison to small-scale tests (Kerpen et al., 2018). Full-scale flume experiments were studied with a slope of 1:3 and uniform step heights of 0.17 m and 0.50 m in the Large Wave Flume (GWK) in Hannover, Germany. Horizontal and vertical wave impacts were measured at 15 locations in the plunging region of the revetment for a range of wave steepnesses (). The results show that previous small-scale tests underestimate design wave impact pressures by a factor of up to 7.7. Impact loadings occur considerably faster than at small scale with relative peak rising times decreasing by a factor of up to 5.6. Prediction formulae are derived for the vertical distribution of horizontal impact pressures (Figure 1b) as well as for temporal characteristics of these pressures at stepped revetments.
U2 - 10.59490/coastlab.2024.761
DO - 10.59490/coastlab.2024.761
M3 - Conference contribution
BT - CoastLab 2024
T2 - 9th Conference on Physical Modelling in Coastal Engineering
Y2 - 13 May 2024 through 16 May 2024
ER -